HD 106252

HD 106252
Observation data; Epoch J2000 Equinox ICRS
Constellation	Virgo
Right ascension	12h 13m 29.510s
Declination	+10° 02′ 29.89″
Apparent magnitude (V)	7.41
Characteristics
Evolutionary stage	main sequence
Spectral type	G0V
B−V color index	0.635±0.007
Astrometry
Radial velocity (Rv)	15.44±0.11 km/s
Proper motion (μ)	RA: +23.315 mas/yr ; Dec.: −279.896 mas/yr
Parallax (π)	15.2484±0.00268 mas
Distance	213.90 ± 0.04 ly ; (65.58 ± 0.01 pc)
Absolute magnitude (MV)	4.53
Details
Mass	1.05±0.02 M☉
Radius	1.096 R☉
Luminosity	1.328±0.030 L☉
Surface gravity (log g)	4.40±0.15 cgs
Temperature	5,890±50 K
Metallicity [Fe/H]	−0.06±0.04 dex
Rotation	22.8 d
Rotational velocity (v sin i)	1.74±0.25 km/s
Age	3.00+0.8; −0.6 Gyr
Other designations
	BD+10°2392, HD 106252, HIP 59610, SAO 99998, LTT 13402, NLTT 30020
Database references
SIMBAD	data
Exoplanet Archive	data

HD 106252 is a star with a brown dwarf^[8] companion in the constellation Virgo. An apparent visual magnitude of 7.41^[1] means this star is too faint to be visible to the naked eye. It is located at a distance of 210 light years from the Sun based on parallax measurements, and is receding with a radial velocity of 15 km/s.^[5]

The stellar classification of HD 106252 is G0V,^[3] matching an ordinary G-type main-sequence star. It has 5%^[6] more mass than the Sun and 10%^[3] greater in girth. This star is about three^[6] billion years old with a low level of magnetic activity^[4] and is spinning with a projected rotational velocity of 2 km/s.^[4] It is radiating 1.3^[6] times the luminosity of the Sun from its photosphere at an effective temperature of 5,890 K.^[4]

In 2001, a massive sub-stellar companion was announced orbiting the star by the European Southern Observatory.^[9]^[4] The discovery was confirmed by a different team using the Lick Telescope.^[3] Astrometric observations from Hipparcos in 2011 suggested that its true mass is likely around 30.6 M_J, in the brown dwarf range.^[8] More accurate astrometry from Gaia in 2021 revealed a smaller true mass of 10.0 M_J.^[6]

The HD 106252 planetary system^[6]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (years)	Eccentricity	Inclination (°)	Radius
b	10.00+0.78 −0.73 `M`_J	2.655±0.017	4.202+0.011 −0.010	0.480±0.010	46.0+4.9 −4.1	—

References

1 2 3 4 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. S2CID 119257644.
1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
1 2 3 4 5 6 Fischer, Debra A.; et al. (2002). "Planetary Companions to HD 136118, HD 50554, and HD 106252". Publications of the Astronomical Society of the Pacific. 114 (795): 529–535. Bibcode:2002PASP..114..529F. doi:10.1086/341677.
1 2 3 4 5 6 7 8 Perrier, C.; et al. (2003). "The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates". Astronomy and Astrophysics. 410 (3): 1039–1049. arXiv:astro-ph/0308281. Bibcode:2003A&A...410.1039P. doi:10.1051/0004-6361:20031340. S2CID 6946291.
1 2 Nidever, David L.; Marcy, Geoffrey W.; Butler, R. Paul; Fischer, Debra A.; Vogt, Steven S.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2002). "Radial Velocities for 889 Late-Type Stars". The Astrophysical Journal Supplement Series. 141 (2): 503–522. arXiv:astro-ph/0112477. Bibcode:2002ApJS..141..503N. doi:10.1086/340570. S2CID 51814894.
1 2 3 4 5 6 7 8 9 Li, Yiting; et al. (2021). "Precise Masses and Orbits for Nine Radial-velocity Exoplanets". The Astronomical Journal. 162 (6): 266. arXiv:2109.10422. Bibcode:2021AJ....162..266L. doi:10.3847/1538-3881/ac27ab. S2CID 237592581.
↑ "HD 106252". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-12.
1 2 Reffert, S.; Quirrenbach, A. (March 2011). "Mass constraints on substellar companion candidates from the re-reduced Hipparcos intermediate astrometric data: nine confirmed planets and two confirmed brown dwarfs". Astronomy & Astrophysics. 527: 22. arXiv:1101.2227. Bibcode:2011A&A...527A.140R. doi:10.1051/0004-6361/201015861. S2CID 54986291. A140.
↑ "Exoplanets: The Hunt Continues!" (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 27, 2012.

External links

[Anderson_Francis_2012-1] 1 2 3 4 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. S2CID 119257644.

[GaiaDR3-2] 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[Fischer2002-3] 1 2 3 4 5 6 Fischer, Debra A.; et al. (2002). "Planetary Companions to HD 136118, HD 50554, and HD 106252". Publications of the Astronomical Society of the Pacific. 114 (795): 529–535. Bibcode:2002PASP..114..529F. doi:10.1086/341677.

[Perrier2003-4] 1 2 3 4 5 6 7 8 Perrier, C.; et al. (2003). "The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates". Astronomy and Astrophysics. 410 (3): 1039–1049. arXiv:astro-ph/0308281. Bibcode:2003A&A...410.1039P. doi:10.1051/0004-6361:20031340. S2CID 6946291.

[Nidever_et_al_2002-5] 1 2 Nidever, David L.; Marcy, Geoffrey W.; Butler, R. Paul; Fischer, Debra A.; Vogt, Steven S.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2002). "Radial Velocities for 889 Late-Type Stars". The Astrophysical Journal Supplement Series. 141 (2): 503–522. arXiv:astro-ph/0112477. Bibcode:2002ApJS..141..503N. doi:10.1086/340570. S2CID 51814894.

[Li2021-6] 1 2 3 4 5 6 7 8 9 Li, Yiting; et al. (2021). "Precise Masses and Orbits for Nine Radial-velocity Exoplanets". The Astronomical Journal. 162 (6): 266. arXiv:2109.10422. Bibcode:2021AJ....162..266L. doi:10.3847/1538-3881/ac27ab. S2CID 237592581.

[Simbad-7] "HD 106252". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-12.

[Reffert_Quirrenbach_2011-8] 1 2 Reffert, S.; Quirrenbach, A. (March 2011). "Mass constraints on substellar companion candidates from the re-reduced Hipparcos intermediate astrometric data: nine confirmed planets and two confirmed brown dwarfs". Astronomy & Astrophysics. 527: 22. arXiv:1101.2227. Bibcode:2011A&A...527A.140R. doi:10.1051/0004-6361/201015861. S2CID 54986291. A140.

[eso0114-9] "Exoplanets: The Hunt Continues!" (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 27, 2012.

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Observation data Epoch J2000 Equinox ICRS
Constellation	Virgo^[1]
Right ascension	12^h 13^m 29.510^s^[2]
Declination	+10° 02′ 29.89″^[2]
Apparent magnitude (V)	7.41^[1]
Characteristics
Evolutionary stage	main sequence^[2]
Spectral type	G0V^[3]
B−V color index	0.635±0.007^[4]
Astrometry
Radial velocity (R_v)	15.44±0.11^[5] km/s
Proper motion (μ)	RA: +23.315 mas/yr^[2] Dec.: −279.896 mas/yr^[2]
Parallax (π)	15.2484±0.00268 mas^[2]
Distance	213.90 ± 0.04 ly (65.58 ± 0.01 pc)
Absolute magnitude (M_V)	4.53^[1]
Details
Mass	1.05±0.02^[6] `M`_☉
Radius	1.096^[3] R_☉
Luminosity	1.328±0.030^[6] `L`_☉
Surface gravity (log g)	4.40±0.15^[4] cgs
Temperature	5,890±50^[4] K
Metallicity [Fe/H]	−0.06±0.04^[6] dex
Rotation	22.8 d^[3]
Rotational velocity (v sin i)	1.74±0.25^[4] km/s
Age	3.00+0.8 −0.6^[6] Gyr
Other designations
BD+10°2392, HD 106252, HIP 59610, SAO 99998, LTT 13402, NLTT 30020^[7]
Database references
SIMBAD	data
Exoplanet Archive	data