ADS 16402 is a binary star system, composed of two sun-like stars located approximately 525 light-years away in the constellation Lacerta. It was first identified as a binary star by John Herschel in 1831.[5] The two stars are separated by 11.26 arcseconds which leads to a projected separation of roughly 1500 astronomical units at the distance of ADS 16402. The star system is estimated to be 1.9 ± 0.6 billion years old.[8] The secondary star ADS 16402 B is also designated HAT-P-1.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lacerta[1] |
| ADS 16402 A | |
| Right ascension | 22h 57m 45.9211s[2] |
| Declination | +38° 40′ 27.200″[2] |
| Apparent magnitude (V) | +10.0[3] |
| ADS 16402 B (HAT-P-1) | |
| Right ascension | 22h 57m 46.8442s[4] |
| Declination | +38° 40′ 30.358″[4] |
| Apparent magnitude (V) | +10.4[3] |
| Characteristics | |
| ADS 16402 A | |
| Spectral type | F8[3]/G0V[5] |
| Apparent magnitude (J) | 8.670±0.021[6] |
| Apparent magnitude (H) | 8.467±0.044[6] |
| Apparent magnitude (K) | 8.405±0.020[6] |
| ADS 16402 B (HAT-P-1) | |
| Spectral type | F8[3]/G0V[5] |
| Apparent magnitude (J) | 9.156±0.026[6] |
| Apparent magnitude (H) | 8.923±0.030[6] |
| Apparent magnitude (K) | 8.858±0.018[6] |
| Variable type | planetary transit[5] |
| Astrometry | |
| ADS 16402 A | |
| Radial velocity (Rv) | −3.43 ± 0.32[5] km/s |
| Proper motion (μ) | RA: 32.079(15) mas/yr[2] Dec.: −42.076(18) mas/yr[2] |
| Parallax (π) | 6.2364 ± 0.0164 mas[2] |
| Distance | 523 ± 1 ly (160.3 ± 0.4 pc) |
| Absolute magnitude (MV) | 3.4 ± 0.3[5] |
| ADS 16402 B (HAT-P-1) | |
| Radial velocity (Rv) | −2.94 ± 0.56[5] km/s |
| Proper motion (μ) | RA: 32.422(14) mas/yr[4] Dec.: −41.949(13) mas/yr[4] |
| Parallax (π) | 6.2438 ± 0.0146 mas[4] |
| Distance | 522 ± 1 ly (160.2 ± 0.4 pc) |
| Absolute magnitude (MV) | 3.7 ± 0.3[5] |
| Details | |
| ADS 16402 A | |
| Mass | 1.16 ± 0.11[5] M☉ |
| Radius | 1.123 +0.14 −0.10[5] R☉ |
| Luminosity | 1.82 +0.75 −0.53[5] L☉ |
| Surface gravity (log g) | 4.36 ± 0.03[7] cgs |
| Temperature | 6251 ± 17[7] K |
| Metallicity [Fe/H] | 0.146 ± 0.014[7] dex |
| Rotational velocity (v sin i) | 7.1 ± 0.3[5] km/s |
| Age | 1.9 ± 0.6[8] Gyr |
| ADS 16402 B (HAT-P-1) | |
| Mass | 1.151 +0.052 −0.051[9] M☉ |
| Radius | 1.174 +0.026 −0.027[9] R☉ |
| Luminosity | 1.585 +0.099 −0.094[9] L☉ |
| Surface gravity (log g) | 4.43 ± 0.02[7] cgs |
| Temperature | 6049 ± 8[7] K |
| Metallicity [Fe/H] | 0.155 ± 0.007[7] dex |
| Rotational velocity (v sin i) | 2.2 ± 0.2[5] km/s |
| Age | 1.9 ± 0.6[8] Gyr |
| Position (relative to ADS 16402 A) | |
| Angular distance | 11.26 ± 0.03″ [10] |
| Other designations | |
| ADS 16402 A: BD+37 4734p, Gaia DR3 1928431764627661312, PPM 88381, 2MASS J22574592+3840272[11] | |
| ADS 16402 B: HAT-P-1, BD+37° 4734s, Gaia DR3 1928431764627661440, PPM 88382, 2MASS J22574684+3840302[12] | |
| Database references | |
| SIMBAD | ADS 16402 |
| ADS 16402 A | |
| HAT-P-1 | |
Planetary system
editOn September 14, 2006 the HATNet Project announced their first extrasolar planet discovery HAT-P-1b, a hot jupiter type gas giant in orbit around the secondary star ADS 16402B. 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.[5][13]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.529 ± 0.020 MJ | 0.05561 ± 0.00083 | 4.4652968 ± 0.0000018 | 0 | 85.634 ± 0.056° | 1.319 ± 0.019 RJ |
See also
edit- HATNet Project or HAT
References
edit- ^ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
- ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d "ADS16402". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-05-10.
- ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d e f g h i j k l m n Bakos, G. Á.; 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.
- ^ a b c d e f Skrutskie, M. F.; et al. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. Vizier catalog entry for A Vizier catalog entry for B
- ^ a b c d e f Liu, F.; et al. (2014). "A high-precision chemical abundance analysis of the HAT-P-1 stellar binary: constraints on planet formation". Monthly Notices of the Royal Astronomical Society. 442 (1): L51–L55. arXiv:1404.2112. Bibcode:2014MNRAS.442L..51L. doi:10.1093/mnrasl/slu055.
- ^ a b c Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575 A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
- ^ a b c d Nikolov, N.; et al. (2014). "Hubble Space Telescope hot Jupiter transmission spectral survey: a detection of Na and strong optical absorption in HAT-P-1b". Monthly Notices of the Royal Astronomical Society. 437 (1): 46–66. arXiv:1310.0083. Bibcode:2014MNRAS.437...46N. doi:10.1093/mnras/stt1859.
- ^ Faedi, F.; et al. (2013). "Lucky imaging of transiting planet host stars with LuckyCam". Monthly Notices of the Royal Astronomical Society. 433 (3): 2097–2106. arXiv:1305.3795. Bibcode:2013MNRAS.433.2097F. doi:10.1093/mnras/stt885.
- ^ a b "BD+37 4734A". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-02-23.
- ^ a b "BD+37 4734B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-02-23.
- ^ Aguilar, David A.; Pulliam, Christine (September 14, 2006). "Strange New Planet Baffles Astronomers" (Press release). Cambridge, Massachusetts: Harvard–Smithsonian Center for Astrophysics. Retrieved November 18, 2016.
- ^ Turner, Jake D.; et al. (2016). "Ground-based near-UV observations of 15 transiting exoplanets: constraints on their atmospheres and no evidence for asymmetrical transits". Monthly Notices of the Royal Astronomical Society. 459 (1): 789–819. arXiv:1603.02587. Bibcode:2016MNRAS.459..789T. doi:10.1093/mnras/stw574.
External links
edit- "Planet HAT-P-1 b". Extrasolar Planets Encyclopaedia. Retrieved 2018-05-06.