Delta Aurigae

δ Aurigae

Location of δ Aurigae in the constellation
Observation data Epoch J2000      Equinox J2000
Constellation	Auriga
Right ascension	05h 59m 31.6366s
Declination	+54° 17′ 04.762″
Apparent magnitude (V)	3.735
Characteristics
Spectral type	K0III
U−B color index	0.87
B−V color index	1.0
R−I color index	0.5
Astrometry
Radial velocity (Rv)	8.2 km/s
Proper motion (μ)	RA: 86.31 mas/yr Dec.: -134.05 mas/yr
Parallax (π)	23.22 ± 0.91 mas
Distance	140 ± 6 ly (43 ± 2 pc)
Absolute magnitude (MV)	4.742
Details
Mass	0.8 M☉
Radius	0.9 R☉
Luminosity	0.4 L☉
Temperature	3,500–5,000 K
Rotation	< 17 km/s 0,007348 Year
Other designations
Prijipati, 33 Aurigae, HR 2077, HD 40035, BD+54°970, FK5 225, HIP 28358, SAO 25502.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)
Database references
SIMBAD	data

Delta Aurigae (δ Aur, δ Aurigae) is a double star in the constellation Auriga. It is approximately 140 light-years from Earth.

In Indian astronomy, it is known by the Sanskrit name Prajāpati (प्रजापति), "the Lord of Creation".

In Chinese, 八穀 (Bā Gǔ), meaning Eight Kinds of Crops, refers to an asterism consisting of δ Aurigae, ξ Aurigae, 26 Camelopardalis, 14 Camelopardalis, 7 Camelopardalis, 9 Aurigae, 11 Camelopardalis and 31 Camelopardalis. Consequently, δ Aurigae itself is known as 八穀一 (Bā Gǔ yī, Template:Lang-en.)

The brighter component is an orange K-type giant with an apparent magnitude of +3.72. It has a companion with an apparent magnitude of +9.7, located 115.4 arcseconds distant.

External links

• HR 2077
• CCDM J05595+5418
• Image Delta Aurigae
• The Constellations and Named Stars