Exoplanet Records
Transit • 2018 • K2
| Property | Value | Description |
|---|---|---|
| ast_flag | 0 | |
| cb_flag | 0 | |
| dec | -1.95 deg | |
| decstr | -01d57m11.84s | Dec [sexagesimal] |
| default_flag | 1 | |
| disc_facility | K2 | Discovery Facility |
| disc_instrument | Kepler CCD Array | Discovery Instrument |
| disc_locale | Space | Discovery Locale |
| disc_pubdate | 2018-08 | Discovery Publication Date |
| disc_refname | <a refstr=LIVINGSTON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....156...78L/abstract target=ref>Livingston et al. 2018</a> | Discovery Reference |
| disc_telescope | 0.95 m Kepler Telescope | Discovery Telescope |
| disc_year | 2018 | |
| discoverymethod | Transit | Discovery Method |
| dkin_flag | 0 | |
| elat | 1.49 deg | |
| elon | 188.37 deg | |
| etv_flag | 0 | |
| gaia_dr2_id | Gaia DR2 3695235654973028736 | Gaia DR2 ID |
| gaia_dr3_id | Gaia DR3 3695235654973028736 | Gaia DR3 ID |
| glat | 60.59 deg | |
| glon | 293.58 deg | |
| hd_name | — | HD ID |
| hip_name | — | HIP ID |
| hostname | K2-257 | Host Name |
| htm20 | -694150515 | |
| ima_flag | 0 | |
| micro_flag | 0 | |
| obm_flag | 0 | |
| pl_bmasse | — | |
| pl_bmasseerr1 | — | |
| pl_bmasseerr2 | — | |
| pl_bmasselim | — | |
| pl_bmassestr | — | Planet Mass or Mass*sin(i) [Earth Mass] |
| pl_bmassj | — | |
| pl_bmassjerr1 | — | |
| pl_bmassjerr2 | — | |
| pl_bmassjlim | — | |
| pl_bmassjstr | — | Planet Mass or Mass*sin(i) [Jupiter Mass] |
| pl_bmassprov | — | 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 | 789 K | |
| pl_eqterr1 | 14 K | |
| pl_eqterr2 | -14 K | |
| pl_eqtlim | 0 | |
| pl_eqtstr | 789±14 | Equilibrium Temperature [K] |
| pl_imppar | 0.40 | |
| pl_impparerr1 | 0.31 | |
| pl_impparerr2 | -0.27 | |
| pl_impparlim | 0 | |
| pl_impparstr | <div><span class="supersubNumber">0.40</span><span class="superscript">+0.31</span><span class="subscript">-0.27</span></div> | Impact Parameter |
| pl_insol | — | |
| pl_insolerr1 | — | |
| pl_insolerr2 | — | |
| pl_insollim | — | |
| pl_insolstr | — | Insolation Flux [Earth Flux] |
| pl_letter | b | 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 | — | |
| pl_msinieerr1 | — | |
| pl_msinieerr2 | — | |
| pl_msinielim | — | |
| pl_msiniestr | — | Planet Mass*sin(i) [Earth Mass] |
| pl_msinij | — | |
| pl_msinijerr1 | — | |
| pl_msinijerr2 | — | |
| pl_msinijlim | — | |
| pl_msinijstr | — | Planet Mass*sin(i) [Jupiter Mass] |
| pl_name | K2-257 b | Planet Name |
| pl_ndispec | 0 | |
| pl_nespec | 0 | |
| pl_nnotes | 0 | |
| pl_ntranspec | 0 | |
| pl_occdep | — | |
| pl_occdeperr1 | — | |
| pl_occdeperr2 | — | |
| pl_occdeplim | — | |
| pl_occdepstr | — | Occultation Depth [%] |
| pl_orbeccen | — | |
| pl_orbeccenerr1 | — | |
| pl_orbeccenerr2 | — | |
| pl_orbeccenlim | — | |
| pl_orbeccenstr | — | 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 | 1.61 day | |
| pl_orbpererr1 | 1.40e-4 day | |
| pl_orbpererr2 | -1.30e-4 day | |
| pl_orbperlim | 0 | |
| pl_orbperstr | <div><span class="supersubNumber">1.60588</span><span class="superscript">+0.00014</span><span class="subscript">-0.00013</span></div> | Orbital Period [day] |
| pl_orbsmax | 0.02 au | |
| pl_orbsmaxerr1 | 2.00e-4 au | |
| pl_orbsmaxerr2 | -2.00e-4 au | |
| pl_orbsmaxlim | 0 | |
| pl_orbsmaxstr | 0.0216±0.0002 | 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 | 2018-08 | Planetary Parameter Reference Publication Date |
| pl_rade | 0.83 Rearth | |
| pl_radeerr1 | 0.06 Rearth | |
| pl_radeerr2 | -0.05 Rearth | |
| pl_radelim | 0 | |
| pl_radestr | <div><span class="supersubNumber">0.83</span><span class="superscript">+0.06</span><span class="subscript">-0.05</span></div> | Planet Radius [Earth Radius] |
| pl_radj | 0.07 Rjupiter | |
| pl_radjerr1 | 5.35e-3 Rjupiter | |
| pl_radjerr2 | -4.46e-3 Rjupiter | |
| pl_radjlim | 0 | |
| pl_radjstr | <div><span class="supersubNumber">0.074</span><span class="superscript">+0.005</span><span class="subscript">-0.004</span></div> | Planet Radius [Jupiter Radius] |
| pl_ratdor | 8.20 | |
| pl_ratdorerr1 | 1.10 | |
| pl_ratdorerr2 | -1.80 | |
| pl_ratdorlim | 0 | |
| pl_ratdorstr | <div><span class="supersubNumber">8.2</span><span class="superscript">+1.1</span><span class="subscript">-1.8</span></div> | Ratio of Semi-Major Axis to Stellar Radius |
| pl_ratror | 0.02 | |
| pl_ratrorerr1 | 1.10e-3 | |
| pl_ratrorerr2 | -8.00e-4 | |
| pl_ratrorlim | 0 | |
| pl_ratrorstr | <div><span class="supersubNumber">0.0153</span><span class="superscript">+0.0011</span><span class="subscript">-0.0008</span></div> | Ratio of Planet to Stellar Radius |
| pl_refname | <a refstr=LIVINGSTON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....156...78L/abstract target=ref>Livingston et al. 2018</a> | Planetary Parameter Reference |
| pl_rvamp | — | |
| pl_rvamperr1 | — | |
| pl_rvamperr2 | — | |
| pl_rvamplim | — | |
| pl_rvampstr | — | Radial Velocity Amplitude [m/s] |
| pl_trandep | 0.03 % | |
| pl_trandeperr1 | — | |
| pl_trandeperr2 | — | |
| pl_trandeplim | 0 | |
| pl_trandepstr | 0.034 | Transit Depth [%] |
| pl_trandur | 1.30 hour | |
| pl_trandurerr1 | — | |
| pl_trandurerr2 | — | |
| pl_trandurlim | 0 | |
| pl_trandurstr | 1.3 | Transit Duration [hour] |
| pl_tranmid | 2.46e6 day | |
| pl_tranmiderr1 | 3.50e-3 day | |
| pl_tranmiderr2 | -3.80e-3 day | |
| pl_tranmidlim | 0 | |
| pl_tranmidstr | <div><span class="supersubNumber">2457583.2875</span><span class="superscript">+0.0035</span><span class="subscript">-0.0038</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 | 188.28 deg | |
| rastr | 12h33m06.79s | RA [sexagesimal] |
| releasedate | 2022-03-28 | Release Date |
| rowupdate | 2022-03-28 | Date of Last Update |
| rv_flag | 0 | |
| soltype | Published Confirmed | Solution Type |
| st_age | — | |
| st_ageerr1 | — | |
| st_ageerr2 | — | |
| st_agelim | — | |
| st_agestr | — | Stellar Age [Gyr] |
| st_dens | — | |
| st_denserr1 | — | |
| st_denserr2 | — | |
| st_denslim | — | |
| st_densstr | — | Stellar Density [g/cm**3] |
| st_logg | 4.76 log(cm/s**2) | |
| st_loggerr1 | 0.01 log(cm/s**2) | |
| st_loggerr2 | -0.01 log(cm/s**2) | |
| st_logglim | 0 | |
| st_loggstr | 4.76±0.01 | Stellar Surface Gravity [log(cm/s**2)] |
| st_lum | — | |
| st_lumerr1 | — | |
| st_lumerr2 | — | |
| st_lumlim | — | |
| st_lumstr | — | Stellar Luminosity [log(Solar)] |
| st_mass | 0.52 Msun | |
| st_masserr1 | 0.01 Msun | |
| st_masserr2 | -0.01 Msun | |
| st_masslim | 0 | |
| st_massstr | 0.52±0.01 | Stellar Mass [Solar mass] |
| st_met | -0.03 dex | |
| st_meterr1 | 0.17 dex | |
| st_meterr2 | -0.18 dex | |
| st_metlim | 0 | |
| st_metratio | [Fe/H] | Stellar Metallicity Ratio |
| st_metstr | <div><span class="supersubNumber">-0.030</span><span class="superscript">+0.170</span><span class="subscript">-0.180</span></div> | Stellar Metallicity [dex] |
| st_nphot | 0 | |
| st_nrvc | 0 | |
| st_nspec | 0 | |
| st_rad | 0.50 Rsun | |
| st_raderr1 | 0.01 Rsun | |
| st_raderr2 | -0.01 Rsun | |
| st_radlim | 0 | |
| st_radstr | 0.50±0.01 | Stellar Radius [Solar Radius] |
| st_radv | — | |
| st_radverr1 | — | |
| st_radverr2 | — | |
| st_radvlim | — | |
| st_radvstr | — | Systemic Radial Velocity [km/s] |
| st_refname | <a refstr=LIVINGSTON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....156...78L/abstract target=ref>Livingston et al. 2018</a> | Stellar Parameter Reference |
| st_rotp | — | |
| st_rotperr1 | — | |
| st_rotperr2 | — | |
| st_rotplim | — | |
| st_rotpstr | — | Stellar Rotational Period [day] |
| st_spectype | — | Spectral Type |
| st_teff | 3725 K | |
| st_tefferr1 | 80 K | |
| st_tefferr2 | -46 K | |
| st_tefflim | 0 | |
| st_teffstr | <div><span class="supersubNumber">3725</span><span class="superscript">+80</span><span class="subscript">-46</span></div> | Stellar Effective Temperature [K] |
| st_vsin | — | |
| st_vsinerr1 | — | |
| st_vsinerr2 | — | |
| st_vsinlim | — | |
| st_vsinstr | — | Stellar Rotational Velocity [km/s] |
| sy_bmag | 15.20 mag | |
| sy_bmagerr1 | 0.03 mag | |
| sy_bmagerr2 | -0.03 mag | |
| sy_bmagstr | 15.195±0.030 | B (Johnson) Magnitude |
| sy_dist | 64.01 pc | |
| sy_disterr1 | 0.26 pc | |
| sy_disterr2 | -0.26 pc | |
| sy_diststr | 64.0065±0.2577 | Distance [pc] |
| sy_gaiamag | 12.86 mag | |
| sy_gaiamagerr1 | 4.36e-4 mag | |
| sy_gaiamagerr2 | -4.36e-4 mag | |
| sy_gaiamagstr | 12.860200±0.000436 | Gaia Magnitude |
| sy_gmag | 15.61 mag | |
| sy_gmagerr1 | 6.57e-3 mag | |
| sy_gmagerr2 | -6.57e-3 mag | |
| sy_gmagstr | 15.6138000±0.0065703 | g (Sloan) Magnitude |
| sy_hmag | 9.90 mag | |
| sy_hmagerr1 | 0.02 mag | |
| sy_hmagerr2 | -0.02 mag | |
| sy_hmagstr | 9.898±0.022 | H (2MASS) Magnitude |
| sy_icmag | — | |
| sy_icmagerr1 | — | |
| sy_icmagerr2 | — | |
| sy_icmagstr | — | I (Cousins) Magnitude |
| sy_imag | 12.31 mag | |
| sy_imagerr1 | 1.22e-3 mag | |
| sy_imagerr2 | -1.22e-3 mag | |
| sy_imagstr | 12.314300±0.001219 | i (Sloan) Magnitude |
| sy_jmag | 10.48 mag | |
| sy_jmagerr1 | 0.02 mag | |
| sy_jmagerr2 | -0.02 mag | |
| sy_jmagstr | 10.477±0.022 | J (2MASS) Magnitude |
| sy_kepmag | 12.87 mag | |
| sy_kepmagerr1 | — | |
| sy_kepmagerr2 | — | |
| sy_kepmagstr | 12.873 | Kepler Magnitude |
| sy_kmag | 9.66 mag | |
| sy_kmagerr1 | 0.02 mag | |
| sy_kmagerr2 | -0.02 mag | |
| sy_kmagstr | 9.661±0.019 | Ks (2MASS) Magnitude |
| sy_mnum | 0 | |
| sy_plx | 15.59 mas | |
| sy_plxerr1 | 0.06 mas | |
| sy_plxerr2 | -0.06 mas | |
| sy_plxstr | 15.5949000±0.0624233 | Parallax [mas] |
| sy_pm | 55.28 mas/yr | |
| sy_pmdec | -28.86 mas/yr | |
| sy_pmdecerr1 | 0.07 mas/yr | |
| sy_pmdecerr2 | -0.07 mas/yr | |
| sy_pmdecstr | -28.8612000±0.0679137 | Proper Motion (Dec) [mas/yr] |
| sy_pmerr1 | 0.10 mas/yr | |
| sy_pmerr2 | -0.10 mas/yr | |
| sy_pmra | -47.15 mas/yr | |
| sy_pmraerr1 | 0.11 mas/yr | |
| sy_pmraerr2 | -0.11 mas/yr | |
| sy_pmrastr | -47.152600±0.106856 | Proper Motion (RA) [mas/yr] |
| sy_pmstr | 55.2841438±0.0977923 | Total Proper Motion [mas/yr] |
| sy_pnum | 1 | |
| 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 | 15.49 mag | |
| sy_rmagerr1 | 0.01 mag | |
| sy_rmagerr2 | -0.01 mag | |
| sy_rmagstr | 15.4887000±0.0116685 | r (Sloan) Magnitude |
| sy_snum | 1 | |
| sy_tmag | 11.81 mag | |
| sy_tmagerr1 | 7.27e-3 mag | |
| sy_tmagerr2 | -7.27e-3 mag | |
| sy_tmagstr | 11.8080000±0.0072729 | TESS Magnitude |
| sy_umag | 17.01 mag | |
| sy_umagerr1 | 9.78e-3 mag | |
| sy_umagerr2 | -9.78e-3 mag | |
| sy_umagstr | 17.0131000±0.0097827 | u (Sloan) Magnitude |
| sy_vmag | 13.72 mag | |
| sy_vmagerr1 | 0.03 mag | |
| sy_vmagerr2 | -0.03 mag | |
| sy_vmagstr | 13.716±0.030 | V (Johnson) Magnitude |
| sy_w1mag | 9.53 mag | |
| sy_w1magerr1 | 0.02 mag | |
| sy_w1magerr2 | -0.02 mag | |
| sy_w1magstr | 9.529±0.023 | W1 (WISE) Magnitude |
| sy_w2mag | 9.48 mag | |
| sy_w2magerr1 | 0.02 mag | |
| sy_w2magerr2 | -0.02 mag | |
| sy_w2magstr | 9.476±0.020 | W2 (WISE) Magnitude |
| sy_w3mag | 9.36 mag | |
| sy_w3magerr1 | 0.04 mag | |
| sy_w3magerr2 | -0.04 mag | |
| sy_w3magstr | 9.357±0.042 | W3 (WISE) Magnitude |
| sy_w4mag | 8.53 mag | |
| sy_w4magerr1 | — | |
| sy_w4magerr2 | — | |
| sy_w4magstr | 8.533 | W4 (WISE) Magnitude |
| sy_zmag | 13.54 mag | |
| sy_zmagerr1 | 0.01 mag | |
| sy_zmagerr2 | -0.01 mag | |
| sy_zmagstr | 13.5380000±0.0139814 | z (Sloan) Magnitude |
| tic_id | TIC 130640162 | TIC ID |
| tran_flag | 1 | |
| ttv_flag | 0 | |
| x | -0.99 | |
| y | -0.14 | |
| z | -0.03 |