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 the Sun, and therefore hotter by about 100 K.

HD 183263
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 28m 24.571367s[1]
Declination +08° 21′ 29.004523″[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)−50.28±0.13[1] km/s
Proper motion (μ) RA: −18.947±0.021 mas/yr[1]
Dec.: −32.190±0.017 mas/yr[1]
Parallax (π)18.3425 ± 0.0206 mas[1]
Distance177.8 ± 0.2 ly
(54.52 ± 0.06 pc)
Absolute magnitude (MV)4.16[2]
Details[4]
Mass1.121±0.052 M☉
Radius1.117±0.038 R☉
Luminosity2.04[2] L☉
Surface gravity (log g)4.403±0.060 cgs
Temperature5,936±44 K
Metallicity [Fe/H]0.302±0.030 dex
Rotational velocity (v sin i)1.56±0.50 km/s
Age8.1[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
SIMBADdata
Exoplanet Archivedata
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] A 2022 study estimated the true mass of HD 183263 c at about 9.31 MJ via astrometry, although this estimate is poorly constrained.[8]

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

References
  1. 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.
  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.
  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. S2CID 56390823.
  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. S2CID 5803173.
  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. S2CID 18169921.
  8. Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.