HD 114783

HD 114783
Observation data; Epoch J2000 Equinox J2000
Constellation	Virgo
Right ascension	13h 12m 43.78556s
Declination	–02° 15′ 54.1307″
Apparent magnitude (V)	7.56
Characteristics
Spectral type	K1V
B−V color index	0.930±0.013
Variable type	Constant
Astrometry
Radial velocity (Rv)	−12.07±0.12 km/s
Proper motion (μ)	RA: −138.362(34) mas/yr ; Dec.: 10.284(22) mas/yr
Parallax (π)	47.5529 ± 0.0291 mas
Distance	68.59 ± 0.04 ly ; (21.03 ± 0.01 pc)
Absolute magnitude (MV)	6.00
Details
Mass	0.883+0.018; −0.028 M☉
Radius	0.810+0.011; −0.009 R☉
Luminosity	0.423±0.001 L☉
Surface gravity (log g)	4.42±0.58 cgs
Temperature	5,114±12 K
Metallicity [Fe/H]	0.08±0.11 dex
Rotational velocity (v sin i)	1.9±0.5 km/s
Age	2.5+3.0; −1.6 Gyr
Other designations
	BD−01°2784, GJ 3769, HD 114783, HIP 64457, SAO 139218
Database references
SIMBAD	data
Exoplanet Archive	data
ARICNS	data

HD 114783 is a star with two exoplanetary companions in the equatorial constellation of Virgo. With an apparent visual magnitude of 7.56^[2] it is too faint to be visible with the unaided eye, but is an easy target for binoculars. Based on parallax measurements, it is located at a distance of 68.6 light-years (21.0 parsecs) from the Sun, but is drifting closer with a radial velocity of −12 km/s.^[1]

This is an orange-hued K-type main-sequence star with a stellar classification of K1V.^[3] It is roughly 2.5^[5] billion years old and is chromospherically inactive^[4] with a low projected rotational velocity of 1.9 km/s.^[5] The star has 88% of the mass and 81% of the radius of the Sun.^[5] It is radiating 42%^[6] of the luminosity of the Sun from its photosphere at an effective temperature of 5,114 K.^[5]

In 2001, the California and Carnegie Planet Search team found an exoplanet, HD 114783 b, orbiting the star using the radial velocity method. The discovery was made with the Keck Telescope.^[4] A second companion, HD 114783 c, was discovered in 2016,^[7] and in 2023 its inclination and true mass were measured via astrometry.^[8]

The HD 114783 planetary system^[9]^[8]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥ 1.034±0.089 $M$ _J	1.169±0.068	496.9±2.3	0.085±0.033	—	—
c	1.9+0.5 −0.4 $M$ _J	5.0±0.1	4,352+88 −76	0.05+0.04 −0.03	21+7 −4 or 159+4 −6°	—

References

^ ^a ^b ^c ^d ^e ^f 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.
^ ^a ^b ^c ^d 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.
^ ^a ^b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
^ ^a ^b ^c Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. arXiv:astro-ph/0110378. Bibcode:2002ApJ...568..352V. doi:10.1086/338768. S2CID 2272917.
^ ^a ^b ^c ^d ^e Soto, M. G.; Jenkins, J. S. (2018). "Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue". Astronomy and Astrophysics. 615: A76. arXiv:1801.09698. Bibcode:2018A&A...615A..76S. doi:10.1051/0004-6361/201731533. S2CID 119107228.
^ ^a ^b 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.
^ Bryan, Marta L.; et al. (2016). "Statistics of Long Period Gas Giant Planets in Known Planetary Systems". The Astrophysical Journal. 821 (2): 89. arXiv:1601.07595. Bibcode:2016ApJ...821...89B. doi:10.3847/0004-637X/821/2/89. S2CID 19709252.
^ ^a ^b Philipot, F.; Lagrange, A.-M.; et al. (August 2023). "Multi techniques approach to identify and/or constrain radial velocity sub-stellar companions". Astronomy & Astrophysics. 678: A107. arXiv:2308.05417. doi:10.1051/0004-6361/202346612. S2CID 260775968.
^ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.

[GaiaDR3-1] ^ ^a ^b ^c ^d ^e ^f 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.

[Anderson_Francis_2012-2] 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.

[Houk1999-3] Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.

[Vogt2002-4] Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. arXiv:astro-ph/0110378. Bibcode:2002ApJ...568..352V. doi:10.1086/338768. S2CID 2272917.

[Soto_Jenkins2018-5] Soto, M. G.; Jenkins, J. S. (2018). "Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue". Astronomy and Astrophysics. 615: A76. arXiv:1801.09698. Bibcode:2018A&A...615A..76S. doi:10.1051/0004-6361/201731533. S2CID 119107228.

[GaiaDR2-6] 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.

[Bryan_et_al_2016-7] Bryan, Marta L.; et al. (2016). "Statistics of Long Period Gas Giant Planets in Known Planetary Systems". The Astrophysical Journal. 821 (2): 89. arXiv:1601.07595. Bibcode:2016ApJ...821...89B. doi:10.3847/0004-637X/821/2/89. S2CID 19709252.

[Philipot2023-8] Philipot, F.; Lagrange, A.-M.; et al. (August 2023). "Multi techniques approach to identify and/or constrain radial velocity sub-stellar companions". Astronomy & Astrophysics. 678: A107. arXiv:2308.05417. doi:10.1051/0004-6361/202346612. S2CID 260775968.

[Butler2006-9] Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.

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HD 114783

See also

References

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