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 |
| Distance | 63.0 ± 0.9 ly (19.3 ± 0.3 pc) |
| Absolute magnitude (MV) | 6.30 |
| Details | |
| Mass | 0.81 M☉ |
| Radius | 0.75 R☉ |
| Temperature | 4965 K |
| Metallicity | -0.2 |
| Age | 0.57×109 years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
| 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 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.[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]
| 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 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357. Vizier catalog entry - ↑ 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. Bibcode:2003A&A...406..373S. arXiv:astro-ph/0305434 . doi:10.1051/0004-6361:20030776.
- ↑ 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.
- ↑ Vogt, Steven S.; et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal. 536 (2): 902–914. Bibcode:2000ApJ...536..902V. arXiv:astro-ph/9911506 . doi:10.1086/308981.
- ↑ Dragomir, Diana; et al. (2012). "The HD 192263 System: Planetary Orbital Period and Stellar Variability Disentangled". The Astrophysical Journal. 754 (1). 37. Bibcode:2012ApJ...754...37D. arXiv:1206.2103 . doi:10.1088/0004-637X/754/1/37.
- Henry; Donahue, Robert A.; Baliunas, Sallie L. (2002). "A False Planet around HD 192263". The Astrophysical Journal Letters. 577 (2): L111–L114. Bibcode:2002ApJ...577L.111H. doi:10.1086/344291.
- "HIP 99711". SIMBAD.
- "CCDM 20140-0052". SIMBAD.
External links
- "HD 192263". wikisky.org/ wikisky.org.
- "TABLE,"X/H" VALUES FOR HD 134987, 168443, 192263, 209458, 217014, 217107, AND 222582". IOP Electronic Journals. External link in
|work=(help) - "Image HD 192263". SIMBAD.
- "Color image HD 192263". SIMBAD.
Coordinates: 
20h 13m 59.8451s, −00° 52′ 00.757″