HD 192263
From Wikipedia, the free encyclopedia
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 13m 59.8451s |
| Declination | –00° 52′ 00.757″ |
| 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: -63.37 mas/yr Dec.: 262.26 mas/yr |
| Parallax (π) | 50.27 ± 1.13 mas |
| Distance | 65 ± 1 ly (19.9 ± 0.4 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 65 light years away 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.[1]
In 1999 an extrasolar planet was announced orbiting the star.
Contents |
[edit] Planetary system
On 28 September 1999, a planet around HD 192263 was found by Santos et al. at Swiss telescope at La Silla, discovered independently by Marcy et al. [2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | >0.641 ± 0.61 MJ | 0.1532 ± 0.88 | 24.3556 ± 0.0046 | 0.055 ± 0.039 |
[edit] References
- ^ Santos et al.; Udry, S.; Mayor, M.; Naef, D.; Pepe, F.; Queloz, D.; Burki, G.; Cramer, N. et al (2003). "The CORALIE survey for southern extra-solar planets XI. The return of the giant planet orbiting HD 192263" (abstract). Astronomy and Astrophysics 406 (1): 373–381. arXiv:astro-ph/0305434. Bibcode 2003A&A...406..373S. doi:10.1051/0004-6361:20030776. http://www.edpsciences.org/articles/aa/abs/2003/28/aah4460/aah4460.html.
- ^ discovered independently by Marcy et al..
- ^ Butler et al.; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D. et al (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode 2006ApJ...646..505B. doi:10.1086/504701. http://www.iop.org/EJ/article/0004-637X/646/1/505/64046.html.
- Santos 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. http://aa.springer.de/papers/0356002/2300599/small.htm.
- Vogt et al.; Marcy, Geoffrey W.; Butler, R. Paul; Apps, Kevin (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. http://www.iop.org/EJ/article/0004-637X/536/2/902/50799.html.
- Henry et al.; 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. http://www.iop.org/EJ/article/1538-4357/577/2/L111/16461.html.
- "HIP 99711". SIMBAD. http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HIP%2099711.
- "CCDM 20140-0052". SIMBAD. http://webviz.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J20140-0052A.
[edit] External links
- "HD 192263". Extrasolar Visions. http://www.extrasolar.net/planettour.asp?StarCatId=normal&StarId=71.
- "HD 192263". wikisky.org/ wikisky.org. http://server6.wikisky.org/starview?object_type=1&object_id=1310256&object_name=HD+192263&locale=EN.
- "TABLE,"X/H" VALUES FOR HD 134987, 168443, 192263, 209458, 217014, 217107, AND 222582". IOP Electronic Journals. http://www.iop.org/EJ/article/1538-3881/121/1/432/200400.tb9.html.
- "Image HD 192263". SIMBAD. http://aladin.u-strasbg.fr/AladinPreview?-c=LTT++8003&ident=LTT++8003&submit=Aladin+previewer.
- Color "Color image HD 192263". SIMBAD. http://aladin.u-strasbg.fr/alapre.pl?-c=LTT++8003&button=RGB Color.
[edit] See also
Coordinates: 
20h 13m 59.8451s, −00° 52′ 00.757″
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
 |
This main sequence star-related article is a stub. You can help Wikipedia by expanding it. |
 |
This extrasolar planet related article is a stub. You can help Wikipedia by expanding it. |
