AM Canum Venaticorum information

AM Canum Venaticorum
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Canes Venatici
Right ascension	12h 34m 54.60s
Declination	+37° 37′ 44.1″
Apparent magnitude (V)	+14.02 (13.7–14.2)
Characteristics
Spectral type	DBp
U−B color index	−1.01
B−V color index	−0.23
Variable type	AM CVn
Astrometry
Proper motion (μ)	RA: 30.935 mas/yr ; Dec.: 12.420 mas/yr
Parallax (π)	3.3512 ± 0.0452 mas
Distance	970 ± 10 ly ; (298 ± 4 pc)
Absolute magnitude (MV)	4.90+0.37; −0.45
Orbit
Period (P)	1,028.7322±0.0003 s (17:08.732±0.018 min)
Inclination (i)	43±2°
Details
WD
Mass	0.6 M☉
Radius	0.0137 R☉
Temperature	100,000 K
donor
Mass	0.1 M☉
Other designations
	EGGR 91, HZ 29, GSC 03018-02523, PG 1232+379, WD 1232+37, AAVSO 1229+38.
Database references
SIMBAD	data

AM Canum Venaticorum (AM CVn) is a hydrogen-deficient cataclysmic variable binary star in the constellation of Canes Venatici. It is the type star of its class of variables, the AM Canum Venaticorum stars. The system consists of a white dwarf gaining matter via an accretion disk from a semi-degenerate or white dwarf companion.

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Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Canes Venatici
Right ascension	12^h 34^m 54.60^s^[1]
Declination	+37° 37′ 44.1″^[1]
Apparent magnitude (V)	+14.02 (13.7–14.2)^[2]
Characteristics
Spectral type	DBp^[3]
U−B color index	−1.01^[4]
B−V color index	−0.23^[4]
Variable type	AM CVn^[5]
Astrometry

Proper motion (μ)	RA: 30.935^[6] mas/yr Dec.: 12.420^[6] mas/yr
Parallax (π)	3.3512 ± 0.0452 mas^[6]
Distance	970 ± 10 ly (298 ± 4 pc)
Absolute magnitude (M_V)	4.90+0.37 −0.45^[2]

Orbit^[5]
Period (P)	1,028.7322±0.0003 s (17:08.732±0.018 min)
Inclination (i)	43±2°
Details
WD
Mass	0.6^[7] `M`_☉
Radius	0.0137^[7] `R`_☉
Temperature	100,000^[7] K
donor
Mass	0.1^[7] `M`_☉
Other designations
EGGR 91, HZ 29, GSC 03018-02523, PG 1232+379, WD 1232+37, AAVSO 1229+38.
Database references
SIMBAD	data

AM Canum Venaticorum information

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