HD 192263

HD 192263
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 20h 13m 59.846s[1]
Declination –00° 52′ 00.77″[1]
Apparent magnitude (V) 7.79
Characteristics
Spectral type K2V
B−V color index 0.938 ± 0.015
Variable type BY Draconis variable
Astrometry
Radial velocity (Rv)-11.3 km/s
Proper motion (μ) RA: -61.13 ± 1.21 [1] mas/yr
Dec.: 261.37 ± 0.50[1] mas/yr
Parallax (π)51.77 ± 0.78[1] mas
Distance63.0 ± 0.9 ly
(19.3 ± 0.3 pc)
Absolute magnitude (MV)6.30
Details
Mass0.81 M☉
Radius0.75 R☉
Temperature4965 K
Metallicity-0.2
Age0.57×109 years
Other designations
V1703 Aquilae, HIP 99711, SAO 144192, LTT 8003, BD-01° 3925, HD 192263, NLTT 48902.
Database references
SIMBADdata
ARICNSdata
Extrasolar Planets
Encyclopaedia		data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HD 192263 is an 8th magnitude star about 63 light years away[1] 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 our 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 our line of sight.[2]

In 1999 an extrasolar planet was announced orbiting the star.

Planetary system

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,[3] discovered independently by Marcy et al.[4]

The HD 192263 planetary system[5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b >0.641 ± 0.61 MJ 0.15312 ± 0.00095 24.3587 ± 0.0022 0.008 ± 0.014 — —

See also

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ↑ 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.
  3. ↑ 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.
  4. ↑ 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.
  5. ↑ 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

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


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