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GJ 887 b

Exoplanet Records

๐Ÿ“ŠKey Properties

Host Star

GJ 887

Discovery

Radial Velocity

Year

2020

Period

9.26 day

Radius

โ€”

Mass

3.90 Mearth

Eq. Temp

426 K

๐ŸงพRecords(3 rows)

Record 1

Radial Velocity โ€ข 2020 โ€ข La Silla Observatory

๐Ÿช
โ–ถAll Properties
PropertyValueDescription
ast_flag0
cb_flag0
dec-35.85 deg
decstr-35d50m50.46s Dec [sexagesimal]
default_flag1
disc_facilityLa Silla Observatory Discovery Facility
disc_instrumentHARPS Spectrograph Discovery Instrument
disc_localeGround Discovery Locale
disc_pubdate2020-06 Discovery Publication Date
disc_refname<a refstr=JEFFERS_ET_AL__2020 href=https://ui.adsabs.harvard.edu/abs/2020Sci...368.1477J/abstract target=ref>Jeffers et al. 2020</a> Discovery Reference
disc_telescope3.6 m ESO Telescope Discovery Telescope
disc_year2020
discoverymethodRadial Velocity Discovery Method
dkin_flag0
elat-27.52 deg
elon332.71 deg
etv_flag0
gaia_dr2_idGaia DR2 6553614253923452800 Gaia DR2 ID
gaia_dr3_idGaia DR3 6553614253923452800 Gaia DR3 ID
glat-65.99 deg
glon5.10 deg
hd_nameHD 217987 HD ID
hip_nameHIP 114046 HIP ID
hostnameGJ 887 Host Name
htm20215838338
ima_flag0
micro_flag0
obm_flag0
pl_bmasse3.90 Mearth
pl_bmasseerr10.50 Mearth
pl_bmasseerr2-0.50 Mearth
pl_bmasselim0
pl_bmassestr3.9&plusmn;0.5 Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj0.01 Mjupiter
pl_bmassjerr11.57e-3 Mjupiter
pl_bmassjerr2-1.57e-3 Mjupiter
pl_bmassjlim0
pl_bmassjstr0.012&plusmn;0.002 Planet Mass or Mass*sin(i) [Jupiter Mass]
pl_bmassprovMsini Planet Mass or Mass*sin(i) Provenance
pl_cmasseโ€”
pl_cmasseerr1โ€”
pl_cmasseerr2โ€”
pl_cmasselimโ€”
pl_cmassestrโ€” Planet Mass*sin(i)/sin(i) [Earth Mass]
pl_cmassjโ€”
pl_cmassjerr1โ€”
pl_cmassjerr2โ€”
pl_cmassjlimโ€”
pl_cmassjstrโ€” Planet Mass*sin(i)/sin(i) [Jupiter Mass]
pl_controv_flag0
pl_densโ€”
pl_denserr1โ€”
pl_denserr2โ€”
pl_denslimโ€”
pl_densstrโ€” Planet Density [g/cm**3]
pl_eqt426 K
pl_eqterr116 K
pl_eqterr2-16 K
pl_eqtlim0
pl_eqtstr426&plusmn;16 Equilibrium Temperature [K]
pl_impparโ€”
pl_impparerr1โ€”
pl_impparerr2โ€”
pl_impparlimโ€”
pl_impparstrโ€” Impact Parameter
pl_insol7.80 Searth
pl_insolerr11.30 Searth
pl_insolerr2-1.10 Searth
pl_insollim0
pl_insolstr<div><span class="supersubNumber">7.8</span><span class="superscript">+1.3</span><span class="subscript">-1.1</span></div> Insolation Flux [Earth Flux]
pl_letterb Planet Letter
pl_masseโ€”
pl_masseerr1โ€”
pl_masseerr2โ€”
pl_masselimโ€”
pl_massestrโ€” Planet Mass [Earth Mass]
pl_massjโ€”
pl_massjerr1โ€”
pl_massjerr2โ€”
pl_massjlimโ€”
pl_massjstrโ€” Planet Mass [Jupiter Mass]
pl_msinie3.90 Mearth
pl_msinieerr10.50 Mearth
pl_msinieerr2-0.50 Mearth
pl_msinielim0
pl_msiniestr3.9&plusmn;0.5 Planet Mass*sin(i) [Earth Mass]
pl_msinij0.01 Mjupiter
pl_msinijerr11.57e-3 Mjupiter
pl_msinijerr2-1.57e-3 Mjupiter
pl_msinijlim0
pl_msinijstr0.012&plusmn;0.002 Planet Mass*sin(i) [Jupiter Mass]
pl_nameGJ 887 b Planet Name
pl_ndispec0
pl_nespec0
pl_nnotes1
pl_ntranspec0
pl_occdepโ€”
pl_occdeperr1โ€”
pl_occdeperr2โ€”
pl_occdeplimโ€”
pl_occdepstrโ€” Occultation Depth [%]
pl_orbeccen0.14
pl_orbeccenerr10.06
pl_orbeccenerr2-0.06
pl_orbeccenlim0
pl_orbeccenstr0.14&plusmn;0.06 Eccentricity
pl_orbinclโ€”
pl_orbinclerr1โ€”
pl_orbinclerr2โ€”
pl_orbincllimโ€”
pl_orbinclstrโ€” Inclination [deg]
pl_orblper180 deg
pl_orblpererr1130 deg
pl_orblpererr2-130 deg
pl_orblperlim0
pl_orblperstr180&plusmn;130 Argument of Periastron [deg]
pl_orbper9.26 day
pl_orbpererr15.00e-4 day
pl_orbpererr2-5.00e-4 day
pl_orbperlim0
pl_orbperstr9.2619&plusmn;0.0005 Orbital Period [day]
pl_orbsmax0.07 au
pl_orbsmaxerr12.20e-3 au
pl_orbsmaxerr2-2.40e-3 au
pl_orbsmaxlim0
pl_orbsmaxstr<div><span class="supersubNumber">0.0683</span><span class="superscript">+0.0022</span><span class="subscript">-0.0024</span></div> Orbit Semi-Major Axis [au]
pl_orbtperโ€”
pl_orbtpererr1โ€”
pl_orbtpererr2โ€”
pl_orbtperlimโ€”
pl_orbtperstrโ€” Epoch of Periastron [day]
pl_projobliqโ€”
pl_projobliqerr1โ€”
pl_projobliqerr2โ€”
pl_projobliqlimโ€”
pl_projobliqstrโ€” Projected Obliquity [deg]
pl_pubdate2026-02 Planetary Parameter Reference Publication Date
pl_radeโ€”
pl_radeerr1โ€”
pl_radeerr2โ€”
pl_radelimโ€”
pl_radestrโ€” Planet Radius [Earth Radius]
pl_radjโ€”
pl_radjerr1โ€”
pl_radjerr2โ€”
pl_radjlimโ€”
pl_radjstrโ€” Planet Radius [Jupiter Radius]
pl_ratdorโ€”
pl_ratdorerr1โ€”
pl_ratdorerr2โ€”
pl_ratdorlimโ€”
pl_ratdorstrโ€” Ratio of Semi-Major Axis to Stellar Radius
pl_ratrorโ€”
pl_ratrorerr1โ€”
pl_ratrorerr2โ€”
pl_ratrorlimโ€”
pl_ratrorstrโ€” Ratio of Planet to Stellar Radius
pl_refname<a refstr=HARTOGH_ET_AL_2026 href=https://ui.adsabs.harvard.edu/abs/2026arXiv260208929H/abstract target=ref>Hartogh et al. 2026</a> Planetary Parameter Reference
pl_rvamp2 m/s
pl_rvamperr10.17 m/s
pl_rvamperr2-0.17 m/s
pl_rvamplim0
pl_rvampstr2.00&plusmn;0.17 Radial Velocity Amplitude [m/s]
pl_trandepโ€”
pl_trandeperr1โ€”
pl_trandeperr2โ€”
pl_trandeplimโ€”
pl_trandepstrโ€” Transit Depth [%]
pl_trandurโ€”
pl_trandurerr1โ€”
pl_trandurerr2โ€”
pl_trandurlimโ€”
pl_trandurstrโ€” Transit Duration [hour]
pl_tranmid2.45e6 day
pl_tranmiderr10.27 day
pl_tranmiderr2-0.27 day
pl_tranmidlim0
pl_tranmidstr2453492.75&plusmn;0.27 Time of Conjunction (Transit Midpoint) [day]
pl_trueobliqโ€”
pl_trueobliqerr1โ€”
pl_trueobliqerr2โ€”
pl_trueobliqlimโ€”
pl_trueobliqstrโ€” True Obliquity [deg]
pl_tsystemrefBJD Time Reference Frame and Standard
ptv_flag0
pul_flag0
ra346.50 deg
rastr23h06m00.66s RA [sexagesimal]
releasedate2026-02-26 Release Date
rowupdate2026-02-26 Date of Last Update
rv_flag1
soltypePublished Confirmed Solution Type
st_age2.90 Gyr
st_ageerr18 Gyr
st_ageerr2-2.20 Gyr
st_agelim0
st_agestr<div><span class="supersubNumber">2.90</span><span class="superscript">+8.00</span><span class="subscript">-2.20</span></div> Stellar Age [Gyr]
st_densโ€”
st_denserr1โ€”
st_denserr2โ€”
st_denslimโ€”
st_densstrโ€” Stellar Density [g/cm**3]
st_logg4.16 log(cm/s**2)
st_loggerr10.04 log(cm/s**2)
st_loggerr2-0.04 log(cm/s**2)
st_logglim0
st_loggstr<div><span class="supersubNumber">4.156</span><span class="superscript">+0.040</span><span class="subscript">-0.038</span></div> Stellar Surface Gravity [log(cm/s**2)]
st_lum-1.43 log(Lsun)
st_lumerr10.04 log(Lsun)
st_lumerr2-0.05 log(Lsun)
st_lumlim0
st_lumstr<div><span class="supersubNumber">-1.43</span><span class="superscript">+0.04</span><span class="subscript">-0.05</span></div> Stellar Luminosity [log(Solar)]
st_mass0.49 Msun
st_masserr10.05 Msun
st_masserr2-0.05 Msun
st_masslim0
st_massstr0.495&plusmn;0.049 Stellar Mass [Solar mass]
st_met-0.06 dex
st_meterr10.08 dex
st_meterr2-0.08 dex
st_metlim0
st_metratio[Fe/H] Stellar Metallicity Ratio
st_metstr-0.060&plusmn;0.080 Stellar Metallicity [dex]
st_nphot1
st_nrvc0
st_nspec2
st_rad0.47 Rsun
st_raderr10.02 Rsun
st_raderr2-0.02 Rsun
st_radlim0
st_radstr0.468&plusmn;0.022 Stellar Radius [Solar Radius]
st_radvโ€”
st_radverr1โ€”
st_radverr2โ€”
st_radvlimโ€”
st_radvstrโ€” Systemic Radial Velocity [km/s]
st_refname<a refstr=HARTOGH_ET_AL_2026 href=https://ui.adsabs.harvard.edu/abs/2026arXiv260208929H/abstract target=ref>Hartogh et al. 2026</a> Stellar Parameter Reference
st_rotp38.70 day
st_rotperr10.50 day
st_rotperr2-0.50 day
st_rotplim0
st_rotpstr38.7&plusmn;0.5 Stellar Rotational Period [day]
st_spectypeM1 V Spectral Type
st_teff3688 K
st_tefferr186 K
st_tefferr2-86 K
st_tefflim0
st_teffstr3688&plusmn;86 Stellar Effective Temperature [K]
st_vsin2.50 km/s
st_vsinerr1โ€”
st_vsinerr2โ€”
st_vsinlim1
st_vsinstr&lt;2.5 Stellar Rotational Velocity [km/s]
sy_bmagโ€”
sy_bmagerr1โ€”
sy_bmagerr2โ€”
sy_bmagstrโ€” B (Johnson) Magnitude
sy_dist3.29 pc
sy_disterr14.90e-4 pc
sy_disterr2-4.90e-4 pc
sy_diststr3.28679&plusmn;0.00049 Distance [pc]
sy_gaiamag6.52 mag
sy_gaiamagerr18.96e-4 mag
sy_gaiamagerr2-8.96e-4 mag
sy_gaiamagstr6.521990&plusmn;0.000896 Gaia Magnitude
sy_gmagโ€”
sy_gmagerr1โ€”
sy_gmagerr2โ€”
sy_gmagstrโ€” g (Sloan) Magnitude
sy_hmag3.61 mag
sy_hmagerr10.23 mag
sy_hmagerr2-0.23 mag
sy_hmagstr3.608&plusmn;0.230 H (2MASS) Magnitude
sy_icmagโ€”
sy_icmagerr1โ€”
sy_icmagerr2โ€”
sy_icmagstrโ€” I (Cousins) Magnitude
sy_imagโ€”
sy_imagerr1โ€”
sy_imagerr2โ€”
sy_imagstrโ€” i (Sloan) Magnitude
sy_jmag4.34 mag
sy_jmagerr10.26 mag
sy_jmagerr2-0.26 mag
sy_jmagstr4.338&plusmn;0.258 J (2MASS) Magnitude
sy_kepmagโ€”
sy_kepmagerr1โ€”
sy_kepmagerr2โ€”
sy_kepmagstrโ€” Kepler Magnitude
sy_kmag3.46 mag
sy_kmagerr10.20 mag
sy_kmagerr2-0.20 mag
sy_kmagstr3.465&plusmn;0.200 Ks (2MASS) Magnitude
sy_mnum0
sy_plx304.22 mas
sy_plxerr10.05 mas
sy_plxerr2-0.05 mas
sy_plxstr304.219000&plusmn;0.045097 Parallax [mas]
sy_pm6895.55 mas/yr
sy_pmdec1330.39 mas/yr
sy_pmdecerr10.08 mas/yr
sy_pmdecerr2-0.08 mas/yr
sy_pmdecstr1330.3900000&plusmn;0.0760344 Proper Motion (Dec) [mas/yr]
sy_pmerr10.07 mas/yr
sy_pmerr2-0.07 mas/yr
sy_pmra6765.99 mas/yr
sy_pmraerr10.07 mas/yr
sy_pmraerr2-0.07 mas/yr
sy_pmrastr6765.9900000&plusmn;0.0707397 Proper Motion (RA) [mas/yr]
sy_pmstr6895.5462606&plusmn;0.0709439 Total Proper Motion [mas/yr]
sy_pnum4
sy_refname<a refstr=STASSUN_ET_AL__2019 href=https://ui.adsabs.harvard.edu/abs/2019AJ....158..138S/abstract target=ref>TICv8</a> System Parameter Reference
sy_rmagโ€”
sy_rmagerr1โ€”
sy_rmagerr2โ€”
sy_rmagstrโ€” r (Sloan) Magnitude
sy_snum1
sy_tmag5.57 mag
sy_tmagerr16.10e-3 mag
sy_tmagerr2-6.10e-3 mag
sy_tmagstr5.5664&plusmn;0.0061 TESS Magnitude
sy_umagโ€”
sy_umagerr1โ€”
sy_umagerr2โ€”
sy_umagstrโ€” u (Sloan) Magnitude
sy_vmag7.56 mag
sy_vmagerr10.20 mag
sy_vmagerr2-0.20 mag
sy_vmagstr7.56&plusmn;0.20 V (Johnson) Magnitude
sy_w1magโ€”
sy_w1magerr1โ€”
sy_w1magerr2โ€”
sy_w1magstrโ€” W1 (WISE) Magnitude
sy_w2magโ€”
sy_w2magerr1โ€”
sy_w2magerr2โ€”
sy_w2magstrโ€” W2 (WISE) Magnitude
sy_w3magโ€”
sy_w3magerr1โ€”
sy_w3magerr2โ€”
sy_w3magstrโ€” W3 (WISE) Magnitude
sy_w4magโ€”
sy_w4magerr1โ€”
sy_w4magerr2โ€”
sy_w4magstrโ€” W4 (WISE) Magnitude
sy_zmagโ€”
sy_zmagerr1โ€”
sy_zmagerr2โ€”
sy_zmagstrโ€” z (Sloan) Magnitude
tic_idTIC 155315739 TIC ID
tran_flag0
ttv_flag0
x0.79
y-0.19
z-0.59

Record 2

Radial Velocity โ€ข 2020 โ€ข La Silla Observatory

๐Ÿช
โ–ถAll Properties
PropertyValueDescription
ast_flag0
cb_flag0
dec-35.85 deg
decstr-35d51m11.0s Dec [sexagesimal]
default_flag0
disc_facilityLa Silla Observatory Discovery Facility
disc_instrumentHARPS Spectrograph Discovery Instrument
disc_localeGround Discovery Locale
disc_pubdate2020-06 Discovery Publication Date
disc_refname<a refstr=JEFFERS_ET_AL__2020 href=https://ui.adsabs.harvard.edu/abs/2020Sci...368.1477J/abstract target=ref>Jeffers et al. 2020</a> Discovery Reference
disc_telescope3.6 m ESO Telescope Discovery Telescope
disc_year2020
discoverymethodRadial Velocity Discovery Method
dkin_flag0
elat-27.51 deg
elon332.68 deg
etv_flag0
gaia_dr2_idGaia DR2 6553614253923452800 Gaia DR2 ID
gaia_dr3_idGaia DR3 6553614253923452800 Gaia DR3 ID
glat-65.96 deg
glon5.10 deg
hd_nameHD 217987 HD ID
hip_nameHIP 114046 HIP ID
hostnameGJ 887 Host Name
htm20211708954
ima_flag0
micro_flag0
obm_flag0
pl_bmasse4.20 Mearth
pl_bmasseerr10.60 Mearth
pl_bmasseerr2-0.60 Mearth
pl_bmasselim0
pl_bmassestr4.2&plusmn;0.6 Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj0.01 Mjupiter
pl_bmassjerr11.89e-3 Mjupiter
pl_bmassjerr2-1.89e-3 Mjupiter
pl_bmassjlim0
pl_bmassjstr0.013&plusmn;0.002 Planet Mass or Mass*sin(i) [Jupiter Mass]
pl_bmassprovMsini Planet Mass or Mass*sin(i) Provenance
pl_cmasseโ€”
pl_cmasseerr1โ€”
pl_cmasseerr2โ€”
pl_cmasselimโ€”
pl_cmassestrโ€” Planet Mass*sin(i)/sin(i) [Earth Mass]
pl_cmassjโ€”
pl_cmassjerr1โ€”
pl_cmassjerr2โ€”
pl_cmassjlimโ€”
pl_cmassjstrโ€” Planet Mass*sin(i)/sin(i) [Jupiter Mass]
pl_controv_flag0
pl_densโ€”
pl_denserr1โ€”
pl_denserr2โ€”
pl_denslimโ€”
pl_densstrโ€” Planet Density [g/cm**3]
pl_eqt468 K
pl_eqterr1โ€”
pl_eqterr2โ€”
pl_eqtlim0
pl_eqtstr468 Equilibrium Temperature [K]
pl_impparโ€”
pl_impparerr1โ€”
pl_impparerr2โ€”
pl_impparlimโ€”
pl_impparstrโ€” Impact Parameter
pl_insol7.95 Searth
pl_insolerr10.20 Searth
pl_insolerr2-0.20 Searth
pl_insollim0
pl_insolstr7.95&plusmn;0.20 Insolation Flux [Earth Flux]
pl_letterb Planet Letter
pl_masseโ€”
pl_masseerr1โ€”
pl_masseerr2โ€”
pl_masselimโ€”
pl_massestrโ€” Planet Mass [Earth Mass]
pl_massjโ€”
pl_massjerr1โ€”
pl_massjerr2โ€”
pl_massjlimโ€”
pl_massjstrโ€” Planet Mass [Jupiter Mass]
pl_msinie4.20 Mearth
pl_msinieerr10.60 Mearth
pl_msinieerr2-0.60 Mearth
pl_msinielim0
pl_msiniestr4.2&plusmn;0.6 Planet Mass*sin(i) [Earth Mass]
pl_msinij0.01 Mjupiter
pl_msinijerr11.89e-3 Mjupiter
pl_msinijerr2-1.89e-3 Mjupiter
pl_msinijlim0
pl_msinijstr0.013&plusmn;0.002 Planet Mass*sin(i) [Jupiter Mass]
pl_nameGJ 887 b Planet Name
pl_ndispec0
pl_nespec0
pl_nnotes1
pl_ntranspec0
pl_occdepโ€”
pl_occdeperr1โ€”
pl_occdeperr2โ€”
pl_occdeplimโ€”
pl_occdepstrโ€” Occultation Depth [%]
pl_orbeccen0
pl_orbeccenerr1โ€”
pl_orbeccenerr2โ€”
pl_orbeccenlim0
pl_orbeccenstr0 Eccentricity
pl_orbinclโ€”
pl_orbinclerr1โ€”
pl_orbinclerr2โ€”
pl_orbincllimโ€”
pl_orbinclstrโ€” Inclination [deg]
pl_orblperโ€”
pl_orblpererr1โ€”
pl_orblpererr2โ€”
pl_orblperlimโ€”
pl_orblperstrโ€” Argument of Periastron [deg]
pl_orbper9.26 day
pl_orbpererr11.00e-3 day
pl_orbpererr2-1.00e-3 day
pl_orbperlim0
pl_orbperstr9.262&plusmn;0.001 Orbital Period [day]
pl_orbsmax0.07 au
pl_orbsmaxerr12.00e-3 au
pl_orbsmaxerr2-2.00e-3 au
pl_orbsmaxlim0
pl_orbsmaxstr0.068&plusmn;0.002 Orbit Semi-Major Axis [au]
pl_orbtperโ€”
pl_orbtpererr1โ€”
pl_orbtpererr2โ€”
pl_orbtperlimโ€”
pl_orbtperstrโ€” Epoch of Periastron [day]
pl_projobliqโ€”
pl_projobliqerr1โ€”
pl_projobliqerr2โ€”
pl_projobliqlimโ€”
pl_projobliqstrโ€” Projected Obliquity [deg]
pl_pubdate2020-06 Planetary Parameter Reference Publication Date
pl_radeโ€”
pl_radeerr1โ€”
pl_radeerr2โ€”
pl_radelimโ€”
pl_radestrโ€” Planet Radius [Earth Radius]
pl_radjโ€”
pl_radjerr1โ€”
pl_radjerr2โ€”
pl_radjlimโ€”
pl_radjstrโ€” Planet Radius [Jupiter Radius]
pl_ratdorโ€”
pl_ratdorerr1โ€”
pl_ratdorerr2โ€”
pl_ratdorlimโ€”
pl_ratdorstrโ€” Ratio of Semi-Major Axis to Stellar Radius
pl_ratrorโ€”
pl_ratrorerr1โ€”
pl_ratrorerr2โ€”
pl_ratrorlimโ€”
pl_ratrorstrโ€” Ratio of Planet to Stellar Radius
pl_refname<a refstr=JEFFERS_ET_AL__2020 href=https://ui.adsabs.harvard.edu/abs/2020Sci...368.1477J/abstract target=ref>Jeffers et al. 2020</a> Planetary Parameter Reference
pl_rvamp2.10 m/s
pl_rvamperr10.30 m/s
pl_rvamperr2-0.20 m/s
pl_rvamplim0
pl_rvampstr<div><span class="supersubNumber">2.1</span><span class="superscript">+0.3</span><span class="subscript">-0.2</span></div> Radial Velocity Amplitude [m/s]
pl_trandepโ€”
pl_trandeperr1โ€”
pl_trandeperr2โ€”
pl_trandeplimโ€”
pl_trandepstrโ€” Transit Depth [%]
pl_trandurโ€”
pl_trandurerr1โ€”
pl_trandurerr2โ€”
pl_trandurlimโ€”
pl_trandurstrโ€” Transit Duration [hour]
pl_tranmidโ€”
pl_tranmiderr1โ€”
pl_tranmiderr2โ€”
pl_tranmidlimโ€”
pl_tranmidstrโ€” Time of Conjunction (Transit Midpoint) [day]
pl_trueobliqโ€”
pl_trueobliqerr1โ€”
pl_trueobliqerr2โ€”
pl_trueobliqlimโ€”
pl_trueobliqstrโ€” True Obliquity [deg]
pl_tsystemrefโ€” Time Reference Frame and Standard
ptv_flag0
pul_flag0
ra346.47 deg
rastr23h05m52.04s RA [sexagesimal]
releasedate2020-07-09 Release Date
rowupdate2020-07-02 Date of Last Update
rv_flag1
soltypePublished Confirmed Solution Type
st_age2.88 Gyr
st_ageerr13.85 Gyr
st_ageerr2-2.88 Gyr
st_agelim0
st_agestr<div><span class="supersubNumber">2.88</span><span class="superscript">+3.85</span><span class="subscript">-2.88</span></div> Stellar Age [Gyr]
st_densโ€”
st_denserr1โ€”
st_denserr2โ€”
st_denslimโ€”
st_densstrโ€” Stellar Density [g/cm**3]
st_logg4.78 log(cm/s**2)
st_loggerr1โ€”
st_loggerr2โ€”
st_logglim0
st_loggstr4.78 Stellar Surface Gravity [log(cm/s**2)]
st_lum-1.43 log(Lsun)
st_lumerr10.04 log(Lsun)
st_lumerr2-0.05 log(Lsun)
st_lumlim0
st_lumstr<div><span class="supersubNumber">-1.43</span><span class="superscript">+0.04</span><span class="subscript">-0.05</span></div> Stellar Luminosity [log(Solar)]
st_mass0.49 Msun
st_masserr10.05 Msun
st_masserr2-0.05 Msun
st_masslim0
st_massstr0.489&plusmn;0.050 Stellar Mass [Solar mass]
st_met-0.06 dex
st_meterr10.08 dex
st_meterr2-0.08 dex
st_metlim0
st_metratio[Fe/H] Stellar Metallicity Ratio
st_metstr-0.060&plusmn;0.080 Stellar Metallicity [dex]
st_nphot1
st_nrvc0
st_nspec2
st_rad0.47 Rsun
st_raderr10.09 Rsun
st_raderr2-0.09 Rsun
st_radlim0
st_radstr0.4712&plusmn;0.0860 Stellar Radius [Solar Radius]
st_radvโ€”
st_radverr1โ€”
st_radverr2โ€”
st_radvlimโ€”
st_radvstrโ€” Systemic Radial Velocity [km/s]
st_refname<a refstr=JEFFERS_ET_AL__2020 href=https://ui.adsabs.harvard.edu/abs/2020Sci...368.1477J/abstract target=ref>Jeffers et al. 2020</a> Stellar Parameter Reference
st_rotpโ€”
st_rotperr1โ€”
st_rotperr2โ€”
st_rotplimโ€”
st_rotpstrโ€” Stellar Rotational Period [day]
st_spectypeM1 V Spectral Type
st_teff3688 K
st_tefferr186 K
st_tefferr2-86 K
st_tefflim0
st_teffstr3688&plusmn;86 Stellar Effective Temperature [K]
st_vsin2.50 km/s
st_vsinerr11 km/s
st_vsinerr2-1 km/s
st_vsinlim0
st_vsinstr2.5&plusmn;1.0 Stellar Rotational Velocity [km/s]
sy_bmagโ€”
sy_bmagerr1โ€”
sy_bmagerr2โ€”
sy_bmagstrโ€” B (Johnson) Magnitude
sy_dist3.29 pc
sy_disterr10.01 pc
sy_disterr2-0.01 pc
sy_diststr3.29&plusmn;0.01 Distance [pc]
sy_gaiamagโ€”
sy_gaiamagerr1โ€”
sy_gaiamagerr2โ€”
sy_gaiamagstrโ€” Gaia Magnitude
sy_gmagโ€”
sy_gmagerr1โ€”
sy_gmagerr2โ€”
sy_gmagstrโ€” g (Sloan) Magnitude
sy_hmagโ€”
sy_hmagerr1โ€”
sy_hmagerr2โ€”
sy_hmagstrโ€” H (2MASS) Magnitude
sy_icmagโ€”
sy_icmagerr1โ€”
sy_icmagerr2โ€”
sy_icmagstrโ€” I (Cousins) Magnitude
sy_imagโ€”
sy_imagerr1โ€”
sy_imagerr2โ€”
sy_imagstrโ€” i (Sloan) Magnitude
sy_jmagโ€”
sy_jmagerr1โ€”
sy_jmagerr2โ€”
sy_jmagstrโ€” J (2MASS) Magnitude
sy_kepmagโ€”
sy_kepmagerr1โ€”
sy_kepmagerr2โ€”
sy_kepmagstrโ€” Kepler Magnitude
sy_kmagโ€”
sy_kmagerr1โ€”
sy_kmagerr2โ€”
sy_kmagstrโ€” Ks (2MASS) Magnitude
sy_mnum0
sy_plx303.90 mas
sy_plxerr10.87 mas
sy_plxerr2-0.87 mas
sy_plxstr303.90&plusmn;0.87 Parallax [mas]
sy_pm6896.07 mas/yr
sy_pmdec1326.66 mas/yr
sy_pmdecerr10.74 mas/yr
sy_pmdecerr2โ€”
sy_pmdecstr1326.66&plusmn;0.74 Proper Motion (Dec) [mas/yr]
sy_pmerr10.70 mas/yr
sy_pmerr2โ€”
sy_pmra6767.26 mas/yr
sy_pmraerr10.70 mas/yr
sy_pmraerr2โ€”
sy_pmrastr6767.26&plusmn;0.70 Proper Motion (RA) [mas/yr]
sy_pmstr6896.07&plusmn;0.70 Total Proper Motion [mas/yr]
sy_pnum4
sy_refname<a refstr=HIPPARCOS_AND_TYCHO_CATALOGS href=https://ui.adsabs.harvard.edu/abs/1997HIP...C......0E/abstract target=ref> Hipparcos and Tycho Catalogs </a> System Parameter Reference
sy_rmagโ€”
sy_rmagerr1โ€”
sy_rmagerr2โ€”
sy_rmagstrโ€” r (Sloan) Magnitude
sy_snum1
sy_tmagโ€”
sy_tmagerr1โ€”
sy_tmagerr2โ€”
sy_tmagstrโ€” TESS Magnitude
sy_umagโ€”
sy_umagerr1โ€”
sy_umagerr2โ€”
sy_umagstrโ€” u (Sloan) Magnitude
sy_vmagโ€”
sy_vmagerr1โ€”
sy_vmagerr2โ€”
sy_vmagstrโ€” V (Johnson) Magnitude
sy_w1magโ€”
sy_w1magerr1โ€”
sy_w1magerr2โ€”
sy_w1magstrโ€” W1 (WISE) Magnitude
sy_w2magโ€”
sy_w2magerr1โ€”
sy_w2magerr2โ€”
sy_w2magstrโ€” W2 (WISE) Magnitude
sy_w3magโ€”
sy_w3magerr1โ€”
sy_w3magerr2โ€”
sy_w3magstrโ€” W3 (WISE) Magnitude
sy_w4magโ€”
sy_w4magerr1โ€”
sy_w4magerr2โ€”
sy_w4magstrโ€” W4 (WISE) Magnitude
sy_zmagโ€”
sy_zmagerr1โ€”
sy_zmagerr2โ€”
sy_zmagstrโ€” z (Sloan) Magnitude
tic_idTIC 155315739 TIC ID
tran_flag0
ttv_flag0
x0.79
y-0.19
z-0.59

Record 3

Radial Velocity โ€ข 2020 โ€ข La Silla Observatory

๐Ÿช
โ–ถAll Properties
PropertyValueDescription
ast_flag0
cb_flag0
dec-35.85 deg
decstr-35d50m50.46s Dec [sexagesimal]
default_flag0
disc_facilityLa Silla Observatory Discovery Facility
disc_instrumentHARPS Spectrograph Discovery Instrument
disc_localeGround Discovery Locale
disc_pubdate2020-06 Discovery Publication Date
disc_refname<a refstr=JEFFERS_ET_AL__2020 href=https://ui.adsabs.harvard.edu/abs/2020Sci...368.1477J/abstract target=ref>Jeffers et al. 2020</a> Discovery Reference
disc_telescope3.6 m ESO Telescope Discovery Telescope
disc_year2020
discoverymethodRadial Velocity Discovery Method
dkin_flag0
elat-27.52 deg
elon332.71 deg
etv_flag0
gaia_dr2_idGaia DR2 6553614253923452800 Gaia DR2 ID
gaia_dr3_idGaia DR3 6553614253923452800 Gaia DR3 ID
glat-65.99 deg
glon5.10 deg
hd_nameHD 217987 HD ID
hip_nameHIP 114046 HIP ID
hostnameGJ 887 Host Name
htm20215838338
ima_flag0
micro_flag0
obm_flag0
pl_bmasse6.90 Mearth
pl_bmasseerr12.10 Mearth
pl_bmasseerr2-2.20 Mearth
pl_bmasselim0
pl_bmassestr<div><span class="supersubNumber">6.9</span><span class="superscript">+2.1</span><span class="subscript">-2.2</span></div> Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj0.02 Mjupiter
pl_bmassjerr16.61e-3 Mjupiter
pl_bmassjerr2-6.92e-3 Mjupiter
pl_bmassjlim0
pl_bmassjstr<div><span class="supersubNumber">0.022</span><span class="superscript">+0.007</span><span class="subscript">-0.007</span></div> Planet Mass or Mass*sin(i) [Jupiter Mass]
pl_bmassprovMsini Planet Mass or Mass*sin(i) Provenance
pl_cmasseโ€”
pl_cmasseerr1โ€”
pl_cmasseerr2โ€”
pl_cmasselimโ€”
pl_cmassestrโ€” Planet Mass*sin(i)/sin(i) [Earth Mass]
pl_cmassjโ€”
pl_cmassjerr1โ€”
pl_cmassjerr2โ€”
pl_cmassjlimโ€”
pl_cmassjstrโ€” Planet Mass*sin(i)/sin(i) [Jupiter Mass]
pl_controv_flag0
pl_densโ€”
pl_denserr1โ€”
pl_denserr2โ€”
pl_denslimโ€”
pl_densstrโ€” Planet Density [g/cm**3]
pl_eqtโ€”
pl_eqterr1โ€”
pl_eqterr2โ€”
pl_eqtlimโ€”
pl_eqtstrโ€” Equilibrium Temperature [K]
pl_impparโ€”
pl_impparerr1โ€”
pl_impparerr2โ€”
pl_impparlimโ€”
pl_impparstrโ€” Impact Parameter
pl_insolโ€”
pl_insolerr1โ€”
pl_insolerr2โ€”
pl_insollimโ€”
pl_insolstrโ€” Insolation Flux [Earth Flux]
pl_letterb Planet Letter
pl_masseโ€”
pl_masseerr1โ€”
pl_masseerr2โ€”
pl_masselimโ€”
pl_massestrโ€” Planet Mass [Earth Mass]
pl_massjโ€”
pl_massjerr1โ€”
pl_massjerr2โ€”
pl_massjlimโ€”
pl_massjstrโ€” Planet Mass [Jupiter Mass]
pl_msinie6.90 Mearth
pl_msinieerr12.10 Mearth
pl_msinieerr2-2.20 Mearth
pl_msinielim0
pl_msiniestr<div><span class="supersubNumber">6.9</span><span class="superscript">+2.1</span><span class="subscript">-2.2</span></div> Planet Mass*sin(i) [Earth Mass]
pl_msinij0.02 Mjupiter
pl_msinijerr16.61e-3 Mjupiter
pl_msinijerr2-6.92e-3 Mjupiter
pl_msinijlim0
pl_msinijstr<div><span class="supersubNumber">0.022</span><span class="superscript">+0.007</span><span class="subscript">-0.007</span></div> Planet Mass*sin(i) [Jupiter Mass]
pl_nameGJ 887 b Planet Name
pl_ndispec0
pl_nespec0
pl_nnotes1
pl_ntranspec0
pl_occdepโ€”
pl_occdeperr1โ€”
pl_occdeperr2โ€”
pl_occdeplimโ€”
pl_occdepstrโ€” Occultation Depth [%]
pl_orbeccen0.08
pl_orbeccenerr10.09
pl_orbeccenerr2-0.06
pl_orbeccenlim0
pl_orbeccenstr<div><span class="supersubNumber">0.0830</span><span class="superscript">+0.0850</span><span class="subscript">-0.0580</span></div> Eccentricity
pl_orbinclโ€”
pl_orbinclerr1โ€”
pl_orbinclerr2โ€”
pl_orbincllimโ€”
pl_orbinclstrโ€” Inclination [deg]
pl_orblper6 deg
pl_orblpererr186 deg
pl_orblpererr2-74 deg
pl_orblperlim0
pl_orblperstr<div><span class="supersubNumber">6.0</span><span class="superscript">+86.0</span><span class="subscript">-74.0</span></div> Argument of Periastron [deg]
pl_orbper9.26 day
pl_orbpererr15.50e-4 day
pl_orbpererr2-5.30e-4 day
pl_orbperlim0
pl_orbperstr<div><span class="supersubNumber">9.26177</span><span class="superscript">+0.00055</span><span class="subscript">-0.00053</span></div> Orbital Period [day]
pl_orbsmax0.08 au
pl_orbsmaxerr19.50e-3 au
pl_orbsmaxerr2-0.01 au
pl_orbsmaxlim0
pl_orbsmaxstr<div><span class="supersubNumber">0.0751</span><span class="superscript">+0.0095</span><span class="subscript">-0.0130</span></div> Orbit Semi-Major Axis [au]
pl_orbtperโ€”
pl_orbtpererr1โ€”
pl_orbtpererr2โ€”
pl_orbtperlimโ€”
pl_orbtperstrโ€” Epoch of Periastron [day]
pl_projobliqโ€”
pl_projobliqerr1โ€”
pl_projobliqerr2โ€”
pl_projobliqlimโ€”
pl_projobliqstrโ€” Projected Obliquity [deg]
pl_pubdate2025-12 Planetary Parameter Reference Publication Date
pl_radeโ€”
pl_radeerr1โ€”
pl_radeerr2โ€”
pl_radelimโ€”
pl_radestrโ€” Planet Radius [Earth Radius]
pl_radjโ€”
pl_radjerr1โ€”
pl_radjerr2โ€”
pl_radjlimโ€”
pl_radjstrโ€” Planet Radius [Jupiter Radius]
pl_ratdorโ€”
pl_ratdorerr1โ€”
pl_ratdorerr2โ€”
pl_ratdorlimโ€”
pl_ratdorstrโ€” Ratio of Semi-Major Axis to Stellar Radius
pl_ratrorโ€”
pl_ratrorerr1โ€”
pl_ratrorerr2โ€”
pl_ratrorlimโ€”
pl_ratrorstrโ€” Ratio of Planet to Stellar Radius
pl_refname<a refstr=HARADA_ET_AL_2025 href=https://ui.adsabs.harvard.edu/abs/2025AJ....170..343H/abstract target=ref>Harada et al. 2025</a> Planetary Parameter Reference
pl_rvamp2.81 m/s
pl_rvamperr10.26 m/s
pl_rvamperr2-0.27 m/s
pl_rvamplim0
pl_rvampstr<div><span class="supersubNumber">2.81</span><span class="superscript">+0.26</span><span class="subscript">-0.27</span></div> Radial Velocity Amplitude [m/s]
pl_trandepโ€”
pl_trandeperr1โ€”
pl_trandeperr2โ€”
pl_trandeplimโ€”
pl_trandepstrโ€” Transit Depth [%]
pl_trandurโ€”
pl_trandurerr1โ€”
pl_trandurerr2โ€”
pl_trandurlimโ€”
pl_trandurstrโ€” Transit Duration [hour]
pl_tranmid2.46e6 day
pl_tranmiderr10.25 day
pl_tranmiderr2-0.29 day
pl_tranmidlim0
pl_tranmidstr<div><span class="supersubNumber">2455197.14</span><span class="superscript">+0.25</span><span class="subscript">-0.29</span></div> Time of Conjunction (Transit Midpoint) [day]
pl_trueobliqโ€”
pl_trueobliqerr1โ€”
pl_trueobliqerr2โ€”
pl_trueobliqlimโ€”
pl_trueobliqstrโ€” True Obliquity [deg]
pl_tsystemrefJD Time Reference Frame and Standard
ptv_flag0
pul_flag0
ra346.50 deg
rastr23h06m00.66s RA [sexagesimal]
releasedate2026-02-12 Release Date
rowupdate2026-02-12 Date of Last Update
rv_flag1
soltypePublished Confirmed Solution Type
st_ageโ€”
st_ageerr1โ€”
st_ageerr2โ€”
st_agelimโ€”
st_agestrโ€” Stellar Age [Gyr]
st_densโ€”
st_denserr1โ€”
st_denserr2โ€”
st_denslimโ€”
st_densstrโ€” Stellar Density [g/cm**3]
st_loggโ€”
st_loggerr1โ€”
st_loggerr2โ€”
st_logglimโ€”
st_loggstrโ€” Stellar Surface Gravity [log(cm/s**2)]
st_lumโ€”
st_lumerr1โ€”
st_lumerr2โ€”
st_lumlimโ€”
st_lumstrโ€” Stellar Luminosity [log(Solar)]
st_massโ€”
st_masserr1โ€”
st_masserr2โ€”
st_masslimโ€”
st_massstrโ€” Stellar Mass [Solar mass]
st_metโ€”
st_meterr1โ€”
st_meterr2โ€”
st_metlimโ€”
st_metratioโ€” Stellar Metallicity Ratio
st_metstrโ€” Stellar Metallicity [dex]
st_nphot1
st_nrvc0
st_nspec2
st_radโ€”
st_raderr1โ€”
st_raderr2โ€”
st_radlimโ€”
st_radstrโ€” Stellar Radius [Solar Radius]
st_radvโ€”
st_radverr1โ€”
st_radverr2โ€”
st_radvlimโ€”
st_radvstrโ€” Systemic Radial Velocity [km/s]
st_refname<a refstr=HARADA_ET_AL_2025 href=https://ui.adsabs.harvard.edu/abs/2025AJ....170..343H/abstract target=ref>Harada et al. 2025</a> Stellar Parameter Reference
st_rotpโ€”
st_rotperr1โ€”
st_rotperr2โ€”
st_rotplimโ€”
st_rotpstrโ€” Stellar Rotational Period [day]
st_spectypeโ€” Spectral Type
st_teff3680 K
st_tefferr1โ€”
st_tefferr2โ€”
st_tefflim0
st_teffstr3680 Stellar Effective Temperature [K]
st_vsinโ€”
st_vsinerr1โ€”
st_vsinerr2โ€”
st_vsinlimโ€”
st_vsinstrโ€” Stellar Rotational Velocity [km/s]
sy_bmagโ€”
sy_bmagerr1โ€”
sy_bmagerr2โ€”
sy_bmagstrโ€” B (Johnson) Magnitude
sy_dist3.29 pc
sy_disterr14.90e-4 pc
sy_disterr2-4.90e-4 pc
sy_diststr3.28679&plusmn;0.00049 Distance [pc]
sy_gaiamag6.52 mag
sy_gaiamagerr18.96e-4 mag
sy_gaiamagerr2-8.96e-4 mag
sy_gaiamagstr6.521990&plusmn;0.000896 Gaia Magnitude
sy_gmagโ€”
sy_gmagerr1โ€”
sy_gmagerr2โ€”
sy_gmagstrโ€” g (Sloan) Magnitude
sy_hmag3.61 mag
sy_hmagerr10.23 mag
sy_hmagerr2-0.23 mag
sy_hmagstr3.608&plusmn;0.230 H (2MASS) Magnitude
sy_icmagโ€”
sy_icmagerr1โ€”
sy_icmagerr2โ€”
sy_icmagstrโ€” I (Cousins) Magnitude
sy_imagโ€”
sy_imagerr1โ€”
sy_imagerr2โ€”
sy_imagstrโ€” i (Sloan) Magnitude
sy_jmag4.34 mag
sy_jmagerr10.26 mag
sy_jmagerr2-0.26 mag
sy_jmagstr4.338&plusmn;0.258 J (2MASS) Magnitude
sy_kepmagโ€”
sy_kepmagerr1โ€”
sy_kepmagerr2โ€”
sy_kepmagstrโ€” Kepler Magnitude
sy_kmag3.46 mag
sy_kmagerr10.20 mag
sy_kmagerr2-0.20 mag
sy_kmagstr3.465&plusmn;0.200 Ks (2MASS) Magnitude
sy_mnum0
sy_plx304.22 mas
sy_plxerr10.05 mas
sy_plxerr2-0.05 mas
sy_plxstr304.219000&plusmn;0.045097 Parallax [mas]
sy_pm6895.55 mas/yr
sy_pmdec1330.39 mas/yr
sy_pmdecerr10.08 mas/yr
sy_pmdecerr2-0.08 mas/yr
sy_pmdecstr1330.3900000&plusmn;0.0760344 Proper Motion (Dec) [mas/yr]
sy_pmerr10.07 mas/yr
sy_pmerr2-0.07 mas/yr
sy_pmra6765.99 mas/yr
sy_pmraerr10.07 mas/yr
sy_pmraerr2-0.07 mas/yr
sy_pmrastr6765.9900000&plusmn;0.0707397 Proper Motion (RA) [mas/yr]
sy_pmstr6895.5462606&plusmn;0.0709439 Total Proper Motion [mas/yr]
sy_pnum4
sy_refname<a refstr=STASSUN_ET_AL__2019 href=https://ui.adsabs.harvard.edu/abs/2019AJ....158..138S/abstract target=ref>TICv8</a> System Parameter Reference
sy_rmagโ€”
sy_rmagerr1โ€”
sy_rmagerr2โ€”
sy_rmagstrโ€” r (Sloan) Magnitude
sy_snum1
sy_tmag5.57 mag
sy_tmagerr16.10e-3 mag
sy_tmagerr2-6.10e-3 mag
sy_tmagstr5.5664&plusmn;0.0061 TESS Magnitude
sy_umagโ€”
sy_umagerr1โ€”
sy_umagerr2โ€”
sy_umagstrโ€” u (Sloan) Magnitude
sy_vmag7.56 mag
sy_vmagerr10.20 mag
sy_vmagerr2-0.20 mag
sy_vmagstr7.56&plusmn;0.20 V (Johnson) Magnitude
sy_w1magโ€”
sy_w1magerr1โ€”
sy_w1magerr2โ€”
sy_w1magstrโ€” W1 (WISE) Magnitude
sy_w2magโ€”
sy_w2magerr1โ€”
sy_w2magerr2โ€”
sy_w2magstrโ€” W2 (WISE) Magnitude
sy_w3magโ€”
sy_w3magerr1โ€”
sy_w3magerr2โ€”
sy_w3magstrโ€” W3 (WISE) Magnitude
sy_w4magโ€”
sy_w4magerr1โ€”
sy_w4magerr2โ€”
sy_w4magstrโ€” W4 (WISE) Magnitude
sy_zmagโ€”
sy_zmagerr1โ€”
sy_zmagerr2โ€”
sy_zmagstrโ€” z (Sloan) Magnitude
tic_idTIC 155315739 TIC ID
tran_flag0
ttv_flag0
x0.79
y-0.19
z-0.59