HD 112410

HD 112410
Observation data; Epoch J2000 Equinox ICRS
Constellation	Musca
Right ascension	12h 57m 31.95991s
Declination	−65° 38′ 47.2594″
Apparent magnitude (V)	6.86
Characteristics
Evolutionary stage	red giant branch
Spectral type	G8III
B−V color index	1.018±0.008
Astrometry
Radial velocity (Rv)	72.82±0.15 km/s
Proper motion (μ)	RA: −65.486±0.043 mas/yr ; Dec.: +31.269±0.038 mas/yr
Parallax (π)	6.3628±0.0284 mas
Distance	513 ± 2 ly ; (157.2 ± 0.7 pc)
Absolute magnitude (MV)	1.22
Details
Mass	1.21±0.25; 1.54±0.05; 2.32±0.23 M☉
Radius	9.56±0.15 R☉
Luminosity	46.0±0.8 L☉
Surface gravity (log g)	2.56±0.10 cgs
Temperature	4,860±32 K
Metallicity [Fe/H]	−0.28±0.05 dex
Rotational velocity (v sin i)	3.29±0.47 km/s
Age	4.17±2.34 Myr
Other designations
	CD−64°676, GC 17573, HD 112410, HIP 63242, SAO 252106, 2MASS J12573196-6538472
Database references
SIMBAD	data

HD 112410 is a star in the southern constellation of Musca. It has a yellow hue and is too dim to be readily visible to the average sight, having an apparent visual magnitude of 6.86. The distance to this star is 513 light years based on parallax, and it is drifting further away from the Sun with a radial velocity of 73 km/s. It has an absolute magnitude of 1.22.

This is an aging giant star with a stellar classification of G8III. It is cooling and expanding along the red giant branch, having evolved off the main sequence after exhausting its core supply of hydrogen fuel. At present it has 10 times the Sun's radius. Mass estimates range from 1.21 up to 2.32 times the mass of the Sun. The star has a lower metallicity the Sun – what astronomers term the abundance of elements with more mass than helium – and it is spinning with a projected rotational velocity of 3.3 km/s. It is radiating 46 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,860 K.

Planetary system

HD 112410 has a substellar companion calculated to have a mass at least 9.2 times that of Jupiter and an orbital period of 124.6 days at a typical separation of approximately 0.57 astronomical units (AU). As of 2013, this is the nearest exoplanet orbiting around any ascending red giant branch star, and second-closest planet to a giant star after the companion of HIP 13044.

The HD 112410 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination (°)	Radius
HD 112410 b	>9.18 `M`_J	0.565	124.6	0.23	—	—

References

1 2 3 4 5 6 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
1 2 3 4 5 6 7 8 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
↑ Wolthoff, Vera; Reffert, Sabine; Quirrenbach, Andreas; Jones, Matías I.; Wittenmyer, Robert A.; Jenkins, James S. (2022). "Precise radial velocities of giant stars. XVI. Planet occurrence rates from the combined analysis of the Lick, EXPRESS, and PPPS giant star surveys". Astronomy and Astrophysics. 661: A63. arXiv:2202.12800. Bibcode:2022A&A...661A..63W. doi:10.1051/0004-6361/202142501.
1 2 Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 1. Ann Arbor, Michigan: Department of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
1 2 3 4 5 6 Jofré, E.; et al. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv:1410.6422. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474. S2CID 53666931.
1 2 3 Jones, M. I.; et al. (2013). "Study of the Impact of the Post-MS evolution of the Host Star on the Orbits of Close-in Planets. II. A Giant Planet in a Close-in Orbit around the RGB Star HIP 63242". Astronomy & Astrophysics. 556 (A78): 5. arXiv:1306.3939. Bibcode:2013A&A...556A..78J. doi:10.1051/0004-6361/201321660. S2CID 118618692.
1 2 Sousa, S. G.; et al. (November 2018). "SWEET-Cat updated. New homogenous spectroscopic parameters". Astronomy & Astrophysics. 620: 13. arXiv:1810.08108. Bibcode:2018A&A...620A..58S. doi:10.1051/0004-6361/201833350. S2CID 119374557. A58.
1 2 3 4 5 Ottoni, G.; Udry, S.; Ségransan, D.; Buldgen, G.; Lovis, C.; Eggenberger, P.; Pezzotti, C.; Adibekyan, V.; Marmier, M.; Mayor, M.; Santos, N. C.; Sousa, S. G.; Lagarde, N.; Charbonnel, C. (2022). "CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy and Astrophysics. 657: A87. arXiv:2201.01528. Bibcode:2022A&A...657A..87O. doi:10.1051/0004-6361/202040078.
↑ "HD 112410". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-08-04.

[Anderson2012-1] 1 2 3 4 5 6 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.

[GaiaDR2-2] 1 2 3 4 5 6 7 8 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[wolthoff2022-3] Wolthoff, Vera; Reffert, Sabine; Quirrenbach, Andreas; Jones, Matías I.; Wittenmyer, Robert A.; Jenkins, James S. (2022). "Precise radial velocities of giant stars. XVI. Planet occurrence rates from the combined analysis of the Lick, EXPRESS, and PPPS giant star surveys". Astronomy and Astrophysics. 661: A63. arXiv:2202.12800. Bibcode:2022A&A...661A..63W. doi:10.1051/0004-6361/202142501.

[Houk1979-4] 1 2 Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 1. Ann Arbor, Michigan: Department of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.

[jofre2015-5] 1 2 3 4 5 6 Jofré, E.; et al. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv:1410.6422. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474. S2CID 53666931.

[jones13-6] 1 2 3 Jones, M. I.; et al. (2013). "Study of the Impact of the Post-MS evolution of the Host Star on the Orbits of Close-in Planets. II. A Giant Planet in a Close-in Orbit around the RGB Star HIP 63242". Astronomy & Astrophysics. 556 (A78): 5. arXiv:1306.3939. Bibcode:2013A&A...556A..78J. doi:10.1051/0004-6361/201321660. S2CID 118618692.

[Sousa2018-7] 1 2 Sousa, S. G.; et al. (November 2018). "SWEET-Cat updated. New homogenous spectroscopic parameters". Astronomy & Astrophysics. 620: 13. arXiv:1810.08108. Bibcode:2018A&A...620A..58S. doi:10.1051/0004-6361/201833350. S2CID 119374557. A58.

[ottoni2022-8] 1 2 3 4 5 Ottoni, G.; Udry, S.; Ségransan, D.; Buldgen, G.; Lovis, C.; Eggenberger, P.; Pezzotti, C.; Adibekyan, V.; Marmier, M.; Mayor, M.; Santos, N. C.; Sousa, S. G.; Lagarde, N.; Charbonnel, C. (2022). "CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy and Astrophysics. 657: A87. arXiv:2201.01528. Bibcode:2022A&A...657A..87O. doi:10.1051/0004-6361/202040078.

[SIMBAD-9] "HD 112410". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-08-04.