Astronomy:KIC 10001893

From HandWiki
Short description: Subdwarf B star
Observation data
Equinox J2000.0]] (ICRS)
Constellation Lyra[1]
Right ascension  19h 09m 33.4137s[2]
Declination +46° 59′ 04.108″[2]
Apparent magnitude (V) 14.69 (var.)[3]
Evolutionary stage Subdwarf B star
Spectral type sdB[4]
Apparent magnitude (J) 16.36±0.10[4]
Variable type V361 Hya[3]
Proper motion (μ) RA: 1.133[2] mas/yr
Dec.: −5.907[2] mas/yr
Parallax (π)0.5573 ± 0.0372[2] mas
Distance5,900 ± 400 ly
(1,800 ± 100 pc)
Mass0.47[5] M
Radius0.24[5] R
Luminosity3.54[6] L
Surface gravity (log g)5.35[6] cgs
Temperature27,500[5] K
Metallicity [Fe/H]0.0[5] dex
Other designations
Gaia DR2 2130473176626619136, Kepler-429, KIC 10001893, 2MASS J19093340+4659041[4]
Database references
Exoplanet Archivedata

KIC 10001893 (Kepler-429) is a subdwarf B star with 3 possible exoplanets,[7] but they probably do not exist.[8] They were detected by orbital brightness modulation.[9]

The KIC 10001893 planetary system[10]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
d (unconfirmed) 0.9856631677316327[11] 0.81161 0[11]
c (unconfirmed) 0.9904421118210884[9] 0.32528 0[9]
b (unconfirmed) 0.21970


  1. Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". 
  2. 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. 3.0 3.1 Jayasinghe, T; Kochanek, C S; Stanek, K Z; Shappee, B J; Holoien, T W-S; Thompson, Toda A; Prieto, J L; Dong, Subo et al. (1 July 2018). "The ASAS-SN catalogue of variable stars I: The Serendipitous Survey". Monthly Notices of the Royal Astronomical Society 477 (3): 3145–3163. doi:10.1093/mnras/sty838. ISSN 0035-8711. Bibcode2018MNRAS.477.3145J. 
  4. 4.0 4.1 4.2 "Kepler-429 -- Hot subdwarf". SIMBAD. Centre de Données astronomiques de Strasbourg. 
  5. 5.0 5.1 5.2 5.3 Mathur, Savita; Huber, Daniel; Batalha, Natalie M.; Ciardi, David R.; Bastien, Fabienne A.; Bieryla, Allyson; Buchhave, Lars A.; Cochran, William D. et al. (2017). "Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run". The Astrophysical Journal Supplement Series 229 (2): 30. doi:10.3847/1538-4365/229/2/30. Bibcode2017ApJS..229...30M. 
  6. 6.0 6.1 Loyd, R. O. Parke; Shkolnik, Evgenya L.; Schneider, Adam C.; Richey-Yowell, Tyler; Barman, Travis S.; Peacock, Sarah; Pagano, Isabella (2020). "Current Population Statistics do Not Favor Photoevaporation over Core-powered Mass Loss as the Dominant Cause of the Exoplanet Radius Gap". The Astrophysical Journal 890 (1): 23. doi:10.3847/1538-4357/ab6605. Bibcode2020ApJ...890...23L. 
  7. Silvotti, R.; Charpinet, S.; Green, E.; Fontaine, G.; Telting, J. H.; Østensen, R. H.; Van Grootel, V.; Baran, A. S. et al. (2014). "Keplerdetection of a new extreme planetary system orbiting the subdwarf-B pulsator KIC 10001893". Astronomy & Astrophysics 570: A130. doi:10.1051/0004-6361/201424509. Bibcode2014A&A...570A.130S. 
  8. Blokesz, A. (July 2019). "Analysis of putative exoplanetary signatures found in light curves of two sdBV stars observed by Kepler". Astronomy & Astrophysics 627: A86. doi:10.1051/0004-6361/201835003. Bibcode2019A&A...627A..86B. 
  9. 9.0 9.1 9.2 "Eyes on Exoplanets-KIC 10001893 c". 
  10. "KIC 10001893". 
  11. 11.0 11.1 "Eyes on Exoplanets-KIC 10001893 d".