HD 183263

HD 183263 is an 8th magnitude subgiant star located approximately 177 light-years away in the constellation Aquila. This star is about to or already ran out of hydrogen fuel at its core and is evolving into a red giant before dying as a white dwarf. It has absolute magnitude (apparent magnitude at 10 pc) of 4.16 compared to the Sun’s 4.83, which indicates the star is more luminous than our Sun, and therefore hotter by about 100 K.

HD 183263

Observation data Epoch J2000      Equinox J2000
Constellation	Aquila
Right ascension	19^h 28^m 24.57155^s[1]
Declination	+08° 21′ 29.0043″[1]
Apparent magnitude (V)	7.86[2]
Characteristics
Spectral type	G2 IV[3]
B−V color index	0.678±0.012[2]
Astrometry
Radial velocity (Rv)	−54.90±0.84[2] km/s
Proper motion (μ)	RA: −19.127[1] mas/yr Dec.: −32.162[1] mas/yr
Parallax (π)	18.4229 ± 0.0381[1] mas
Distance	177.0 ± 0.4 ly (54.3 ± 0.1 pc)
Absolute magnitude (MV)	4.16[2]
Details[4]
Mass	1.121±0.052 M☉
Radius	1.117±0.038 R☉
Luminosity	2.04[2] L☉
Surface gravity (log g)	4.403±0.060 cgs
Temperature	5,936±44 K
Metallicity [Fe/H]	0.302±0.030 dex
Rotational velocity (v sin i)	1.56±0.50 km/s
Age	8.1[5] Gyr
Other designations
BD+08° 4109, HD 179791, HIP 95740, HR 7288, SAO 124664, PPM 167917, TYC 1055-3415-1, GSC 01055-03415[6]
Database references
SIMBAD	data
Exoplanet Archive	data
Extrasolar Planets Encyclopaedia	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

Planetary system

The star has two known planets in orbit around it. Planet b was discovered in 2005[5] while planet c was discovered in 2008.[7]

The HD 183263 planetary system[4]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥3.635±0.034 MJ	1.486±0.023	625.10±0.34	0.3728±0.0065	—	—
c	≥6.90±0.12 MJ	5.69±0.11	4684±71	0.051±0.010	—	—

See also

• List of multiplanetary systems
• List of exoplanetary host stars

References

1. 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.
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.
3. McCuskey, S. W. (May 1949), "Stellar spectra in Milky Way regions. A region in Aquila", Astrophysical Journal, 109: 426, Bibcode:1949ApJ...109..426M, doi:10.1086/145146
4. Feng, Y. Katherina; et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal. 800 (1). 22. arXiv:1501.00633. Bibcode:2015ApJ...800...22F. doi:10.1088/0004-637X/800/1/22.
5. Marcy, Geoffrey W.; et al. (2005). "Five New Extrasolar Planets". The Astrophysical Journal. 619 (1): 570–584. Bibcode:2005ApJ...619..570M. CiteSeerX 10.1.1.516.6667. doi:10.1086/426384.
6. "HD 183263". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 7, 2018.
7. Wright, J. T.; et al. (2009). "Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems". The Astrophysical Journal. 693 (2): 1084–1099. arXiv:0812.1582. Bibcode:2009ApJ...693.1084W. doi:10.1088/0004-637X/693/2/1084.

External links

• "Image HD 183263". Simbad.