ADS 16402

ADS 16402
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Lacerta
	ADS 16402 A
Right ascension	22h 57m 45.9211s
Declination	+38° 40′ 27.200″
Apparent magnitude (V)	+10.0
	ADS 16402 B (HAT-P-1)
Right ascension	22h 57m 46.8442s
Declination	+38° 40′ 30.358″
Apparent magnitude (V)	+10.4
Characteristics
ADS 16402 A
Spectral type	F8/G0V
Apparent magnitude (J)	8.670±0.021
Apparent magnitude (H)	8.467±0.044
Apparent magnitude (K)	8.405±0.020
ADS 16402 B (HAT-P-1)
Spectral type	F8/G0V
Apparent magnitude (J)	9.156±0.026
Apparent magnitude (H)	8.923±0.030
Apparent magnitude (K)	8.858±0.018
Variable type	planetary transit
Astrometry
ADS 16402 A
Radial velocity (Rv)	−3.43 ± 0.32 km/s
Proper motion (μ)	RA: 32.079(15) mas/yr ; Dec.: −42.076(18) mas/yr
Parallax (π)	6.2364 ± 0.0164 mas
Distance	523 ± 1 ly ; (160.3 ± 0.4 pc)
Absolute magnitude (MV)	3.4 ± 0.3
ADS 16402 B (HAT-P-1)
Radial velocity (Rv)	−2.94 ± 0.56 km/s
Proper motion (μ)	RA: 32.422(14) mas/yr ; Dec.: −41.949(13) mas/yr
Parallax (π)	6.2438 ± 0.0146 mas
Distance	522 ± 1 ly ; (160.2 ± 0.4 pc)
Absolute magnitude (MV)	3.7 ± 0.3
Details
ADS 16402 A
Mass	1.16 ± 0.11 M☉
Radius	1.123 +0.14; −0.10 R☉
Luminosity	1.82 +0.75; −0.53 L☉
Surface gravity (log g)	4.36 ± 0.03 cgs
Temperature	6251 ± 17 K
Metallicity [Fe/H]	0.146 ± 0.014 dex
Rotational velocity (v sin i)	7.1 ± 0.3 km/s
Age	1.9 ± 0.6 Gyr
ADS 16402 B (HAT-P-1)
Mass	1.151 +0.052; −0.051 M☉
Radius	1.174 +0.026; −0.027 R☉
Luminosity	1.585 +0.099; −0.094 L☉
Surface gravity (log g)	4.43 ± 0.02 cgs
Temperature	6049 ± 8 K
Metallicity [Fe/H]	0.155 ± 0.007 dex
Rotational velocity (v sin i)	2.2 ± 0.2 km/s
Age	1.9 ± 0.6 Gyr
Position (relative to ADS 16402 A)
Angular distance	11.26 ± 0.03″
Other designations
	CCDM J22578+3840, WDS J22578+3840, HJ 1832
	ADS 16402 A: BD+37 4734p, Gaia DR3 1928431764627661312, PPM 88381, 2MASS J22574592+3840272
	ADS 16402 B: HAT-P-1, BD+37° 4734s, Gaia DR3 1928431764627661440, PPM 88382, 2MASS J22574684+3840302
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.

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^ ^a ^b ^c ^d Cite error: The named reference Gaia DR3 for A was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Simbad was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Gaia DR3 for B was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Cite error: The named reference Bakos2007 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Liu2014 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference Bonfanti2015 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference Nikolov2014 was invoked but never defined (see the help page).
^ Cite error: The named reference Faedi2013 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Simbad for A was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Simbad for B was invoked but never defined (see the help page).

[Roman1987-1] Cite error: The named reference Roman1987 was invoked but never defined (see the help page).

[Gaia_DR3_for_A-2] Cite error: The named reference Gaia DR3 for A was invoked but never defined (see the help page).

[Simbad-3] Cite error: The named reference Simbad was invoked but never defined (see the help page).

[Gaia_DR3_for_B-4] Cite error: The named reference Gaia DR3 for B was invoked but never defined (see the help page).

[Bakos2007-5] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Cite error: The named reference Bakos2007 was invoked but never defined (see the help page).

[Skrutskie2006-6] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).

[Liu2014-7] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Liu2014 was invoked but never defined (see the help page).

[Bonfanti2015-8] Cite error: The named reference Bonfanti2015 was invoked but never defined (see the help page).

[Nikolov2014-9] Cite error: The named reference Nikolov2014 was invoked but never defined (see the help page).

[Faedi2013-10] Cite error: The named reference Faedi2013 was invoked but never defined (see the help page).

[Simbad_for_A-11] Cite error: The named reference Simbad for A was invoked but never defined (see the help page).

[Simbad_for_B-12] Cite error: The named reference Simbad for B was invoked but never defined (see the help page).

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Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Lacerta^[1]
ADS 16402 A
Right ascension	22^h 57^m 45.9211^s^[2]
Declination	+38° 40′ 27.200″^[2]
Apparent magnitude (V)	+10.0^[3]
ADS 16402 B (HAT-P-1)
Right ascension	22^h 57^m 46.8442^s^[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 (R_v)	−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 (M_V)	3.4 ± 0.3^[5]
ADS 16402 B (HAT-P-1)
Radial velocity (R_v)	−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 (M_V)	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
CCDM J22578+3840, WDS J22578+3840, HJ 1832^[11]^[12]
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