HAT-P-5
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 17m 37.311s[3] |
| Declination | +36° 37′ 17.12″[3] |
| Apparent magnitude (V) | +11.95 |
| Characteristics | |
| Spectral type | G1V |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: 14.0 ± 2.1[3] mas/yr Dec.: 4.1 ± 0.8[3] mas/yr |
| Distance | approx. 1,100 ly (340 ± 30 pc) |
| Details | |
| Mass | 1.16 ± 0.062 M☉ |
| Radius | 1.167 ± 0.049 R☉ |
| Surface gravity (log g) | 4.37 ± 0.03[4] cgs |
| Temperature | 5863 ± 80[4] K |
| Metallicity [Fe/H] | 0.10 ± 0.10[4] dex |
| Rotational velocity (v sin i) | 2.8 ± 1.0[4] km/s |
| Age | 2.6 ± 1.8 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia | data |
HAT-P-5 is a 12th magnitude star in the constellation Lyra, approximately 1,100 light years away from Earth. It is a spectral type G star, about 1.16 solar masses and radii greater than our Sun, and only 200 Kelvins hotter. It is estimated to be 2.6 billion years old.[1][2]
Planetary system
On October 9, 2007, a report was submitted to The Astrophysical Journal Letters telling of the discovery of an exoplanet transiting HAT-P-5. The planet was described as a Jupiter-like hot Jupiter, with a radius about one and one quarter times that of Jupiter, and nearly the same mass. Its density was reported as 0.66 ± 0.11 g/cm3, and its inclination 86.75 ± 0.44°.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.06 ± 0.11 MJ | 0.04075 ± 0.00076 | 2.788491 ± 2.5e-05 | 0 | — | — |
See also
References
- 1 2 "Notes for Planet HAT-P-5 b". Extrasolar Planets Encyclopaedia. Retrieved October 16, 2007.
- 1 2 "Simbad Query Result". Simbad. Retrieved October 16, 2007.
- 1 2 3 4 Zacharias, N.; et al. (2013). "The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". The Astronomical Journal 145 (2). 44. arXiv:1212.6182. Bibcode:2013AJ....145...44Z. doi:10.1088/0004-6256/145/2/44.Vizier catalog entry
- 1 2 3 4 Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161.
- ↑ Bakos, G. Á.; et al. (2007). "HAT-P-5b: A Jupiter-like Hot Jupiter Transiting a Bright Star". The Astrophysical Journal Letters 671 (2): L173–L176. arXiv:0710.1841. Bibcode:2007ApJ...671L.173B. doi:10.1086/525022.
External links
Coordinates: 
18h 17m 37.299s, +36° 37′ 16.88″
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