AG Draconis

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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
Distance approx. −2,000 ly
(approx. −600 pc)
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.

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