HD 13931

HD 13931
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda
Right ascension 02h 16m 47.3790s[1]
Declination +43° 46′ 22.788″[1]
Apparent magnitude (V) 7.597
Characteristics
Spectral type G0V[2]
Apparent magnitude (B) 8.237
Apparent magnitude (R) 7.2
Apparent magnitude (I) 6.9
Apparent magnitude (J) 6.452
Apparent magnitude (H) 6.234
Apparent magnitude (K) 6.139
B−V color index 0.640
V−R color index 0.4
R−I color index 0.3
Variable type none
Astrometry
Radial velocity (Rv)+33.7 km/s
Proper motion (μ) RA: 99.03 ± 0.66[3] mas/yr
Dec.: –183.19 ± 0.49[3] mas/yr
Parallax (π)21.39 ± 0.24[1] mas
Distance152 ± 2 ly
(46.8 ± 0.5 pc)
Details
Mass1.04 ± 0.01[4] M☉
Radius1.18 ± 0.02[4] R☉
Luminosity1.49 ± 0.01[4] L☉
Surface gravity (log g)4.3 ± 0.03[4] cgs
Temperature5868 ± 24[4] K
Metallicity+0.03
Rotation~26 days
Age6.8 ± 0.6[4] Gyr
Other designations
BD+43°459, G 173-50, HIP 10626, LTT 10766, NLTT 7491, PPM 44946, SAO 37918
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia		data

HD 13931 is an 8th magnitude G-type star located approximately 144 light years away[3] in the constellation Andromeda. This star is larger, hotter, brighter, and more massive than our Sun. Also its metal content is about 8% greater than the Sun. In 2009, a very long-period gas giant planet was found in orbit around the star.

The HD 13931 planetary system[5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥1.88 ± 0.15 MJ 5.15 ± 0.29 4218 ± 388 0.02 ± 0.05 — —

See also

References

  1. 1 2 3 Gaia Collaboration; Brown, A. G. A.; Vallenari, A.; Prusti, T.; De Bruijne, J. H. J.; Mignard, F.; Drimmel, R.; Babusiaux, C.; Bailer-Jones, C. A. L.; Bastian, U.; Biermann, M.; Evans, D. W.; Eyer, L.; Jansen, F.; Jordi, C.; Katz, D.; Klioner, S. A.; Lammers, U.; Lindegren, L.; Luri, X.; O'Mullane, W.; Panem, C.; Pourbaix, D.; Randich, S.; Sartoretti, P.; Siddiqui, H. I.; Soubiran, C.; Valette, V.; Van Leeuwen, F.; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy & Astrophysics. 595: A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.
  2. ↑ Grenier, S.; Baylac, M.-O.; Rolland, L.; Burnage, R.; Arenou, F.; Briot, D.; Delmas, F.; Duflot, M.; Genty, V.; Gómez, A. E.; Halbwachs, J.-L.; Marouard, M.; Oblak, E.; Sellier, A. (1999). "Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS". Astronomy and Astrophysics Supplement. 137 (3): 451. Bibcode:1999A&AS..137..451G. doi:10.1051/aas:1999489.
  3. 1 2 3 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  4. 1 2 3 4 5 6 Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
  5. ↑ Howard, Andrew W.; et al. (2010). "The California Planet Survey. I. Four New Giant Exoplanets". The Astrophysical Journal. 721 (2): 1467–1481. arXiv:1003.3488. Bibcode:2010ApJ...721.1467H. doi:10.1088/0004-637X/721/2/1467.

Coordinates: 02h 16m 47.3791s, +43° 46′ 22.784″


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