Exoplanet Records
Radial Velocity • 2025 • Mauna Kea Observatory
| Property | Value | Description |
|---|---|---|
| ast_flag | 0 | |
| cb_flag | 0 | |
| dec | 28.32 deg | |
| decstr | +28d18m55.03s | Dec [sexagesimal] |
| default_flag | 1 | |
| disc_facility | Mauna Kea Observatory | Discovery Facility |
| disc_instrument | SPIRou | Discovery Instrument |
| disc_locale | Ground | Discovery Locale |
| disc_pubdate | 2025-10 | Discovery Publication Date |
| disc_refname | <a refstr=MOUTOU_ET_AL__2025 href=https://ui.adsabs.harvard.edu/abs/2025arXiv251011523M/abstract target=ref>Moutou et al. 2025</a> | Discovery Reference |
| disc_telescope | 3.58 m Canada-France-Hawaii Telescope (CFHT) | Discovery Telescope |
| disc_year | 2025 | |
| discoverymethod | Radial Velocity | Discovery Method |
| dkin_flag | 0 | |
| elat | 10.36 deg | |
| elon | 127.75 deg | |
| etv_flag | 0 | |
| gaia_dr2_id | Gaia DR2 704966762213039488 | Gaia DR2 ID |
| gaia_dr3_id | Gaia DR3 704966762213039488 | Gaia DR3 ID |
| glat | 37.71 deg | |
| glon | 196.82 deg | |
| hd_name | — | HD ID |
| hip_name | — | HIP ID |
| hostname | 55 Cnc B | Host Name |
| htm20 | 568990408 | |
| ima_flag | 0 | |
| micro_flag | 0 | |
| obm_flag | 0 | |
| pl_bmasse | 5.30 Mearth | |
| pl_bmasseerr1 | 1.40 Mearth | |
| pl_bmasseerr2 | -1.40 Mearth | |
| pl_bmasselim | 0 | |
| pl_bmassestr | 5.3±1.4 | Planet Mass or Mass*sin(i) [Earth Mass] |
| pl_bmassj | 0.02 Mjupiter | |
| pl_bmassjerr1 | 4.40e-3 Mjupiter | |
| pl_bmassjerr2 | -4.40e-3 Mjupiter | |
| pl_bmassjlim | 0 | |
| pl_bmassjstr | 0.017±0.004 | Planet Mass or Mass*sin(i) [Jupiter Mass] |
| pl_bmassprov | Msini | Planet Mass or Mass*sin(i) Provenance |
| pl_cmasse | — | |
| pl_cmasseerr1 | — | |
| pl_cmasseerr2 | — | |
| pl_cmasselim | — | |
| pl_cmassestr | — | Planet Mass*sin(i)/sin(i) [Earth Mass] |
| pl_cmassj | — | |
| pl_cmassjerr1 | — | |
| pl_cmassjerr2 | — | |
| pl_cmassjlim | — | |
| pl_cmassjstr | — | Planet Mass*sin(i)/sin(i) [Jupiter Mass] |
| pl_controv_flag | 0 | |
| pl_dens | — | |
| pl_denserr1 | — | |
| pl_denserr2 | — | |
| pl_denslim | — | |
| pl_densstr | — | Planet Density [g/cm**3] |
| pl_eqt | — | |
| pl_eqterr1 | — | |
| pl_eqterr2 | — | |
| pl_eqtlim | — | |
| pl_eqtstr | — | Equilibrium Temperature [K] |
| pl_imppar | — | |
| pl_impparerr1 | — | |
| pl_impparerr2 | — | |
| pl_impparlim | — | |
| pl_impparstr | — | Impact Parameter |
| pl_insol | — | |
| pl_insolerr1 | — | |
| pl_insolerr2 | — | |
| pl_insollim | — | |
| pl_insolstr | — | Insolation Flux [Earth Flux] |
| pl_letter | c | Planet Letter |
| pl_masse | — | |
| pl_masseerr1 | — | |
| pl_masseerr2 | — | |
| pl_masselim | — | |
| pl_massestr | — | Planet Mass [Earth Mass] |
| pl_massj | — | |
| pl_massjerr1 | — | |
| pl_massjerr2 | — | |
| pl_massjlim | — | |
| pl_massjstr | — | Planet Mass [Jupiter Mass] |
| pl_msinie | 5.30 Mearth | |
| pl_msinieerr1 | 1.40 Mearth | |
| pl_msinieerr2 | -1.40 Mearth | |
| pl_msinielim | 0 | |
| pl_msiniestr | 5.3±1.4 | Planet Mass*sin(i) [Earth Mass] |
| pl_msinij | 0.02 Mjupiter | |
| pl_msinijerr1 | 4.40e-3 Mjupiter | |
| pl_msinijerr2 | -4.40e-3 Mjupiter | |
| pl_msinijlim | 0 | |
| pl_msinijstr | 0.017±0.004 | Planet Mass*sin(i) [Jupiter Mass] |
| pl_name | 55 Cnc B c | Planet Name |
| pl_ndispec | 0 | |
| pl_nespec | 0 | |
| pl_nnotes | 2 | |
| pl_ntranspec | 0 | |
| pl_occdep | — | |
| pl_occdeperr1 | — | |
| pl_occdeperr2 | — | |
| pl_occdeplim | — | |
| pl_occdepstr | — | Occultation Depth [%] |
| pl_orbeccen | 0 | |
| pl_orbeccenerr1 | — | |
| pl_orbeccenerr2 | — | |
| pl_orbeccenlim | 0 | |
| pl_orbeccenstr | 0 | Eccentricity |
| pl_orbincl | — | |
| pl_orbinclerr1 | — | |
| pl_orbinclerr2 | — | |
| pl_orbincllim | — | |
| pl_orbinclstr | — | Inclination [deg] |
| pl_orblper | — | |
| pl_orblpererr1 | — | |
| pl_orblpererr2 | — | |
| pl_orblperlim | — | |
| pl_orblperstr | — | Argument of Periastron [deg] |
| pl_orbper | 33.75 day | |
| pl_orbpererr1 | 0.04 day | |
| pl_orbpererr2 | -0.04 day | |
| pl_orbperlim | 0 | |
| pl_orbperstr | 33.747±0.035 | Orbital Period [day] |
| pl_orbsmax | 0.13 au | |
| pl_orbsmaxerr1 | 3.00e-3 au | |
| pl_orbsmaxerr2 | -3.00e-3 au | |
| pl_orbsmaxlim | 0 | |
| pl_orbsmaxstr | 0.130±0.003 | Orbit Semi-Major Axis [au] |
| pl_orbtper | — | |
| pl_orbtpererr1 | — | |
| pl_orbtpererr2 | — | |
| pl_orbtperlim | — | |
| pl_orbtperstr | — | Epoch of Periastron [day] |
| pl_projobliq | — | |
| pl_projobliqerr1 | — | |
| pl_projobliqerr2 | — | |
| pl_projobliqlim | — | |
| pl_projobliqstr | — | Projected Obliquity [deg] |
| pl_pubdate | 2025-10 | Planetary Parameter Reference Publication Date |
| pl_rade | — | |
| pl_radeerr1 | — | |
| pl_radeerr2 | — | |
| pl_radelim | — | |
| pl_radestr | — | Planet Radius [Earth Radius] |
| pl_radj | — | |
| pl_radjerr1 | — | |
| pl_radjerr2 | — | |
| pl_radjlim | — | |
| pl_radjstr | — | Planet Radius [Jupiter Radius] |
| pl_ratdor | — | |
| pl_ratdorerr1 | — | |
| pl_ratdorerr2 | — | |
| pl_ratdorlim | — | |
| pl_ratdorstr | — | Ratio of Semi-Major Axis to Stellar Radius |
| pl_ratror | — | |
| pl_ratrorerr1 | — | |
| pl_ratrorerr2 | — | |
| pl_ratrorlim | — | |
| pl_ratrorstr | — | Ratio of Planet to Stellar Radius |
| pl_refname | <a refstr=MOUTOU_ET_AL__2025 href=https://ui.adsabs.harvard.edu/abs/2025arXiv251011523M/abstract target=ref>Moutou et al. 2025</a> | Planetary Parameter Reference |
| pl_rvamp | 2.59 m/s | |
| pl_rvamperr1 | 0.65 m/s | |
| pl_rvamperr2 | -0.66 m/s | |
| pl_rvamplim | 0 | |
| pl_rvampstr | <div><span class="supersubNumber">2.59</span><span class="superscript">+0.65</span><span class="subscript">-0.66</span></div> | Radial Velocity Amplitude [m/s] |
| pl_trandep | — | |
| pl_trandeperr1 | — | |
| pl_trandeperr2 | — | |
| pl_trandeplim | — | |
| pl_trandepstr | — | Transit Depth [%] |
| pl_trandur | — | |
| pl_trandurerr1 | — | |
| pl_trandurerr2 | — | |
| pl_trandurlim | — | |
| pl_trandurstr | — | Transit Duration [hour] |
| pl_tranmid | 2.46e6 day | |
| pl_tranmiderr1 | 4.10 day | |
| pl_tranmiderr2 | -4.20 day | |
| pl_tranmidlim | 0 | |
| pl_tranmidstr | <div><span class="supersubNumber">2455491.8</span><span class="superscript">+4.1</span><span class="subscript">-4.2</span></div> | Time of Conjunction (Transit Midpoint) [day] |
| pl_trueobliq | — | |
| pl_trueobliqerr1 | — | |
| pl_trueobliqerr2 | — | |
| pl_trueobliqlim | — | |
| pl_trueobliqstr | — | True Obliquity [deg] |
| pl_tsystemref | BJD | Time Reference Frame and Standard |
| ptv_flag | 0 | |
| pul_flag | 0 | |
| ra | 133.17 deg | |
| rastr | 08h52m40.30s | RA [sexagesimal] |
| releasedate | 2025-10-30 | Release Date |
| rowupdate | 2025-10-30 | Date of Last Update |
| rv_flag | 1 | |
| soltype | Published Confirmed | Solution Type |
| st_age | 10 Gyr | |
| st_ageerr1 | — | |
| st_ageerr2 | — | |
| st_agelim | -1 | |
| st_agestr | >10 | Stellar Age [Gyr] |
| st_dens | — | |
| st_denserr1 | — | |
| st_denserr2 | — | |
| st_denslim | — | |
| st_densstr | — | Stellar Density [g/cm**3] |
| st_logg | 4.86 log(cm/s**2) | |
| st_loggerr1 | 0.05 log(cm/s**2) | |
| st_loggerr2 | -0.05 log(cm/s**2) | |
| st_logglim | 0 | |
| st_loggstr | 4.86±0.05 | Stellar Surface Gravity [log(cm/s**2)] |
| st_lum | — | |
| st_lumerr1 | — | |
| st_lumerr2 | — | |
| st_lumlim | — | |
| st_lumstr | — | Stellar Luminosity [log(Solar)] |
| st_mass | 0.26 Msun | |
| st_masserr1 | 0.02 Msun | |
| st_masserr2 | -0.02 Msun | |
| st_masslim | 0 | |
| st_massstr | 0.26±0.02 | Stellar Mass [Solar mass] |
| st_met | 0.16 dex | |
| st_meterr1 | 0.10 dex | |
| st_meterr2 | -0.10 dex | |
| st_metlim | 0 | |
| st_metratio | [M/H] | Stellar Metallicity Ratio |
| st_metstr | 0.16±0.10 | Stellar Metallicity [dex] |
| st_nphot | 0 | |
| st_nrvc | 0 | |
| st_nspec | 0 | |
| st_rad | 0.27 Rsun | |
| st_raderr1 | 0.07 Rsun | |
| st_raderr2 | -0.07 Rsun | |
| st_radlim | 0 | |
| st_radstr | 0.274±0.066 | Stellar Radius [Solar Radius] |
| st_radv | — | |
| st_radverr1 | — | |
| st_radverr2 | — | |
| st_radvlim | — | |
| st_radvstr | — | Systemic Radial Velocity [km/s] |
| st_refname | <a refstr=MOUTOU_ET_AL__2025 href=https://ui.adsabs.harvard.edu/abs/2025arXiv251011523M/abstract target=ref>Moutou et al. 2025</a> | Stellar Parameter Reference |
| st_rotp | 92 day | |
| st_rotperr1 | 5 day | |
| st_rotperr2 | -5 day | |
| st_rotplim | 0 | |
| st_rotpstr | 92±5 | Stellar Rotational Period [day] |
| st_spectype | M4.5 V | Spectral Type |
| st_teff | 3286 K | |
| st_tefferr1 | 31 K | |
| st_tefferr2 | -31 K | |
| st_tefflim | 0 | |
| st_teffstr | 3286±31 | Stellar Effective Temperature [K] |
| st_vsin | 1.29 km/s | |
| st_vsinerr1 | 0.31 km/s | |
| st_vsinerr2 | -0.31 km/s | |
| st_vsinlim | 0 | |
| st_vsinstr | 1.29±0.31 | Stellar Rotational Velocity [km/s] |
| sy_bmag | 14.88 mag | |
| sy_bmagerr1 | 0.09 mag | |
| sy_bmagerr2 | -0.09 mag | |
| sy_bmagstr | 14.884±0.088 | B (Johnson) Magnitude |
| sy_dist | 12.48 pc | |
| sy_disterr1 | 0.02 pc | |
| sy_disterr2 | -0.02 pc | |
| sy_diststr | 12.4773±0.0171 | Distance [pc] |
| sy_gaiamag | 11.68 mag | |
| sy_gaiamagerr1 | 8.84e-4 mag | |
| sy_gaiamagerr2 | -8.84e-4 mag | |
| sy_gaiamagstr | 11.679800±0.000884 | Gaia Magnitude |
| sy_gmag | — | |
| sy_gmagerr1 | — | |
| sy_gmagerr2 | — | |
| sy_gmagstr | — | g (Sloan) Magnitude |
| sy_hmag | 7.93 mag | |
| sy_hmagerr1 | 0.04 mag | |
| sy_hmagerr2 | -0.04 mag | |
| sy_hmagstr | 7.933±0.040 | H (2MASS) Magnitude |
| sy_icmag | — | |
| sy_icmagerr1 | — | |
| sy_icmagerr2 | — | |
| sy_icmagstr | — | I (Cousins) Magnitude |
| sy_imag | — | |
| sy_imagerr1 | — | |
| sy_imagerr2 | — | |
| sy_imagstr | — | i (Sloan) Magnitude |
| sy_jmag | 8.56 mag | |
| sy_jmagerr1 | 0.03 mag | |
| sy_jmagerr2 | -0.03 mag | |
| sy_jmagstr | 8.560±0.027 | J (2MASS) Magnitude |
| sy_kepmag | — | |
| sy_kepmagerr1 | — | |
| sy_kepmagerr2 | — | |
| sy_kepmagstr | — | Kepler Magnitude |
| sy_kmag | 7.67 mag | |
| sy_kmagerr1 | 0.02 mag | |
| sy_kmagerr2 | -0.02 mag | |
| sy_kmagstr | 7.666±0.023 | Ks (2MASS) Magnitude |
| sy_mnum | 0 | |
| sy_plx | 80.12 mas | |
| sy_plxerr1 | 0.11 mas | |
| sy_plxerr2 | -0.11 mas | |
| sy_plxstr | 80.116600±0.108962 | Parallax [mas] |
| sy_pm | 539.88 mas/yr | |
| sy_pmdec | -244.78 mas/yr | |
| sy_pmdecerr1 | 0.11 mas/yr | |
| sy_pmdecerr2 | -0.11 mas/yr | |
| sy_pmdecstr | -244.779000±0.105915 | Proper Motion (Dec) [mas/yr] |
| sy_pmerr1 | 0.14 mas/yr | |
| sy_pmerr2 | -0.14 mas/yr | |
| sy_pmra | -481.20 mas/yr | |
| sy_pmraerr1 | 0.15 mas/yr | |
| sy_pmraerr2 | -0.15 mas/yr | |
| sy_pmrastr | -481.204000±0.150965 | Proper Motion (RA) [mas/yr] |
| sy_pmstr | 539.8833656±0.1428690 | Total Proper Motion [mas/yr] |
| sy_pnum | 7 | |
| 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_rmag | — | |
| sy_rmagerr1 | — | |
| sy_rmagerr2 | — | |
| sy_rmagstr | — | r (Sloan) Magnitude |
| sy_snum | 2 | |
| sy_tmag | 10.33 mag | |
| sy_tmagerr1 | 7.32e-3 mag | |
| sy_tmagerr2 | -7.32e-3 mag | |
| sy_tmagstr | 10.3334000±0.0073243 | TESS Magnitude |
| sy_umag | — | |
| sy_umagerr1 | — | |
| sy_umagerr2 | — | |
| sy_umagstr | — | u (Sloan) Magnitude |
| sy_vmag | 13.15 mag | |
| sy_vmagerr1 | 0.09 mag | |
| sy_vmagerr2 | -0.09 mag | |
| sy_vmagstr | 13.152±0.090 | V (Johnson) Magnitude |
| sy_w1mag | — | |
| sy_w1magerr1 | — | |
| sy_w1magerr2 | — | |
| sy_w1magstr | — | W1 (WISE) Magnitude |
| sy_w2mag | — | |
| sy_w2magerr1 | — | |
| sy_w2magerr2 | — | |
| sy_w2magstr | — | W2 (WISE) Magnitude |
| sy_w3mag | — | |
| sy_w3magerr1 | — | |
| sy_w3magerr2 | — | |
| sy_w3magstr | — | W3 (WISE) Magnitude |
| sy_w4mag | — | |
| sy_w4magerr1 | — | |
| sy_w4magerr2 | — | |
| sy_w4magstr | — | W4 (WISE) Magnitude |
| sy_zmag | — | |
| sy_zmagerr1 | — | |
| sy_zmagerr2 | — | |
| sy_zmagstr | — | z (Sloan) Magnitude |
| tic_id | TIC 332064684 | TIC ID |
| tran_flag | 0 | |
| ttv_flag | 0 | |
| x | -0.60 | |
| y | 0.64 | |
| z | 0.47 |