HD 192263

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HD 192263
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension  20h 13m 59.84551s[1]
Declination −00° 52′ 00.7717″[1]
Apparent magnitude (V) 7.79[2]
Spectral type K1/2 V[3]
B−V color index 0.938±0.015[2]
Variable type BY Draconis variable[4]
Radial velocity (Rv)−10.67±0.09[2] km/s
Proper motion (μ) RA: −62.671[2] mas/yr
Dec.: +260.961[2] mas/yr
Parallax (π)50.8982 ± 0.0561[2] mas
Distance64.08 ± 0.07 ly
(19.65 ± 0.02 pc)
Absolute magnitude (MV)6.36[2]
Mass0.65±0.09 M
Radius0.74±0.02 R
Surface gravity (log g)4.51 cgs
Temperature4,955 K
Metallicity [Fe/H]+0.08 dex
Other designations
V1703 Aquilae, BD−01° 3925, HD 192263, HIP 99711, HR 7288, SAO 144192, LTT 8003, NLTT 48902[6]
Database references
Extrasolar Planets

HD 192263 is an 8th magnitude star about 64 light years away[7] in the constellation of Aquila. The spectral type of the star is K2V, meaning that it is an orange dwarf, a type of star somewhat cooler and less luminous than the Sun, it is not visible to the unaided eye, but with good binoculars or small telescope it should be easy to spot.

Various companions for the star have been reported, but all of them are probably line-of-sight optical components or just spurious observations.

The apparent direction of the star lies close to the Earth's Celestial equator, and it rotates almost edge-on to Earth's line of sight.[8]

In 1999 an extrasolar planet was announced orbiting the star.

Planetary system[edit]

On 28 September 1999, a planet around HD 192263 was found by the Geneva Extrasolar Planet Search team using the CORALIE spectrograph on the 1.2m Euler Swiss Telescope at La Silla Observatory,[9] discovered independently by Vogt et al.[10]

The HD 192263 planetary system[11]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b >0.641±0.61 MJ 0.15312±0.00095 24.3587±0.0022 0.008±0.014

See also[edit]


  1. ^ 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.
  2. ^ a b c d e f g 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. ^ Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey, Ann Arbor, Michigan: Department of Astronomy, University of Michigan, 5, Bibcode:1999MSS...C05....0H
  4. ^ Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, GCVS 5.1, 61 (1): 80–88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085.
  5. ^ Brewer, John M.; et al. (2016), "Spectral Properties of Cool Stars: Extended Abundance Analysis of 1,617 Planet-Search Stars", The Astrophysical Journal Supplement Series, 225 (2): 32, arXiv:1606.07929, Bibcode:2016ApJS..225...32B, doi:10.3847/0067-0049/225/2/32.
  6. ^ "HD 192263". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 8, 2018.
  7. ^ Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.Gaia Data Release 1 catalog entry
  8. ^ Santos, N. C.; et al. (2003). "The CORALIE survey for southern extra-solar planets XI. The return of the giant planet orbiting HD 192263". Astronomy and Astrophysics. 406 (1): 373–381. arXiv:astro-ph/0305434. Bibcode:2003A&A...406..373S. doi:10.1051/0004-6361:20030776.
  9. ^ Santos, N. C.; et al. (2000). "The CORALIE survey for Southern extra-solar planets III. A giant planet in orbit around HD 192263". Astronomy and Astrophysics. 356: 599–602. Bibcode:2000A&A...356..599S.
  10. ^ Vogt, Steven S.; et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal. 536 (2): 902–914. arXiv:astro-ph/9911506. Bibcode:2000ApJ...536..902V. doi:10.1086/308981.
  11. ^ Dragomir, Diana; et al. (2012). "The HD 192263 System: Planetary Orbital Period and Stellar Variability Disentangled". The Astrophysical Journal. 754 (1). 37. arXiv:1206.2103. Bibcode:2012ApJ...754...37D. doi:10.1088/0004-637X/754/1/37.

External links[edit]

Coordinates: Sky map 20h 13m 59.8451s, −00° 52′ 00.757″