AG Draconis

AG Dra
	; AG Draconis
Observation data; Epoch J2000 Equinox J2000
Constellation	Draco
Right ascension	16h 01m 41.0135s
Declination	+66° 48' 10.139"'
Apparent magnitude (V)	9.82
Characteristics
Spectral type	K0
U−B color index	?
B−V color index	?
Variable type	nova variable
Astrometry
Radial velocity (Rv)	-137.6 km/s
Proper motion (μ)	RA: -6.18 mas/yr ; Dec.: -5.47 mas/yr
Parallax (π)	-1.72 ± 0.98 mas
Absolute magnitude (MV)	11.3
Details
Mass	1.5 / 0.5 M☉
Radius	0.9 R☉
Luminosity	1500 L☉
Surface gravity (log g)	? cgs
Temperature	3.500–5.000 K
Metallicity	?
Rotation	?
Age	? years
Orbit
Companion	AG Draconis B
Period (P)	1.516769336 yr
Semi-major axis (a)	0.01081″
Other designations
	AG Dra, GCRV 9231, PPM 19692, TYC 4195-254-1, [[ AG]]+66° 715, RBS 1547, UBV 13635, BD+67° 922, GSC 04195-00254, 2RE J160133+664805, BPS BS 16087-0012, HIC 78512, 2RE J1601+664, 2E 1601.3+6656, HIP 78512, RX J1601.6+6648, AAVSO 1601+67, 2E 3573, IRAS 16013+6656, 1RXS J160141.2+664811, JP11 236, SAO 16931, 1ES 1601+66.9, 2MASS J16014101+6648101.
Database references
SIMBAD	data

AG Draconis is a binary system consisting of an orange-red giant star and a white dwarf star. The star is located in a spherical halo around the Milky Way, and is a nova variable, erupting every 10–15 years.

References

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