NO Aurigae

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NO Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 40m 42.0504s
Declination +31° 55′ 14.187″
Apparent magnitude (V) 6.24v
Spectral type M2SIab
U−B color index 2.22
B−V color index 2.12
R−I color index 1.42
Variable type slow irregular variable (LC)
Radial velocity (Rv) 4.8 km/s
Proper motion (μ) RA: 0.46 mas/yr
Dec.: -4.28 mas/yr
Parallax (π) 2.38 ± 0.97 mas
Distance approx. 1,400 ly
(approx. 400 pc)
Absolute magnitude (MV) -1.90
Mass 3–5 M
Radius 135 R
Luminosity 3,000 L
Temperature < 3,750 K
Other designations
BD+31° 1049, HD 37536, HIP 26718, HR 1939, SAO 58322.
Database references
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

NO Aurigae is an S-type star in the constellation Auriga. It is a slow irregular pulsating variable star of small amplitude, ranging from mag. 6.1 to 6.3.