| 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 | |
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.
Roman1987 was invoked but never defined (see the help page).Gaia DR3 for A was invoked but never defined (see the help page).Simbad was invoked but never defined (see the help page).Gaia DR3 for B was invoked but never defined (see the help page).Bakos2007 was invoked but never defined (see the help page).Skrutskie2006 was invoked but never defined (see the help page).Liu2014 was invoked but never defined (see the help page).Bonfanti2015 was invoked but never defined (see the help page).Nikolov2014 was invoked but never defined (see the help page).Faedi2013 was invoked but never defined (see the help page).Simbad for A was invoked but never defined (see the help page).Simbad for B was invoked but never defined (see the help page).