ADS 16402
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| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Lacerta |
| ADS 16402 A | |
| Right ascension | 22h 57m 45.882s[1] |
| Declination | +38° 40′ 26.39″[1] |
| Apparent magnitude (V) | +10.0[1] |
| ADS 16402 B (HAT-P-1) | |
| Right ascension | 22h 57m 46.825s[1] |
| Declination | +38° 40′ 29.83″[1] |
| Apparent magnitude (V) | +10.4[1] |
| Characteristics | |
| ADS 16402 A | |
| Spectral type | F8[1]/G0V[2] |
| ADS 16402 B (HAT-P-1) | |
| Spectral type | F8[1]/G0V[2] |
| Astrometry | |
| Proper motion (μ) | RA: 23.4[1] / 29.3[1] mas/yr Dec.: -54.0[1] / -51.0[1] mas/yr |
| Distance | 450 ly (139 (+22-19)[2] pc) |
| Absolute magnitude (MV) | 3.4 ±0.3[2] /3.7 ±0.3[2] |
| Details | |
| ADS 16402 A | |
| Mass | 1.16 ± 0.11[2] M☉ |
| Radius | 1.123 +0.14 −0.10[2] R☉ |
| Luminosity | 1.82 +0.75 −0.53[2] L☉ |
| Surface gravity (log g) | 4.13 ± 0.10[2] |
| Temperature | 6047 ±56[2] K |
| Metallicity | [Fe/H] = +0.12 ±0.05[2] |
| Rotational velocity (v sin i) | 7.1 ± 0.3[2] km/s |
| Age | 3.6 × 109[2] years |
| ADS 16402 B (HAT-P-1) | |
| Mass | 1.133 ±0.077[2] M☉ |
| Radius | 1.115 ±0.05[2] R☉ |
| Luminosity | 1.51 +0.73 −0.42[2] L☉ |
| Surface gravity (log g) | 4.45 ± 0.06[2] |
| Temperature | 5975 ±45[2] K |
| Metallicity | [Fe/H] = +0.13 ±0.02[2] |
| Rotational velocity (v sin i) | 2.2 ± 0.2[2] km/s |
| Age | 3.6 × 109[2] years |
| Other designations | |
|
ADS 16402 A
BD+37 4734p, ADS 16402 A, CSI+37 4734 2, PPM 88381, ** HER 1832, AG+38 2387, IDS 22531+3808 A, ** HJ 1832A, CCDM J22578+3840A, 2MASS J22574592+3840272 ADS 16402 B HAT-P-1, BD+37 4734s, AG+38 2388, SAO 72884, ** HJ 1832B, CCDM J22578+3840B, IDS 22531+3808 B, ADS 16402 B, CSI+37 4734 1, PPM 88382 |
|
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia |
data |
ADS 16402 is a binary star system, composed of two sun-like stars located 450 light-years away in the constellation Lacerta. The two stars are separated by 1500 AUs. The star system is estimated to be 3.6 billion years old.[1] The secondary star ADS 16402 B is also designated HAT-P-1.
Contents |
[edit] Planetary system
In 2006 the HATNet Project announced the discovery of a hot jupiter type gas giant extrasolar planet in orbit around the secondary star. Following the designation scheme used by the HATNet Project, the secondary star is known as HAT-P-1, and the planet itself designated HAT-P-1b.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | 0.524 ± 0.031 MJ | 0.0553 ± 0.0014 | 4.4652934 ± 0.000093 | <0.067 |
[edit] See also
- HATNet Project or HAT
[edit] References
- ^ a b c d e f g h i j k l m "SIMBAD query result: ADS16402". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=ADS16402. Retrieved 2009-05-10.
- ^ a b c d e f g h i j k l m n o p q r s t u v Bakos et al.; Noyes, R. W.; Kovacs, G.; Latham, D. W.; Sasselov, D. D.; Torres, G.; Fischer, D. A.; Stefanik, R. P. et al. (2007). "HAT-P-1b: A Large-Radius, Low-Density Exoplanet Transiting One Member of a Stellar Binary". The Astrophysical Journal 656 (1): 552–559. arXiv:astro-ph/0609369. Bibcode 2007ApJ...656..552B. doi:10.1086/509874. http://www.iop.org/EJ/article/0004-637X/656/1/552/70075.html.
[edit] External links
- "HAT-P-1". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HAT-P-1. Retrieved 2009-05-10.
