HR 968

HR 968 (HD 20121) is a triple star in the Eridanus constellation with an apparent magnitude of 5.93. A close pair, a magnitude 6.6 F-type star and a magnitude 6.9 A-type star, are accompanied by a fainter common proper motion companion 3.6″ away.^[4] The three combined are barely visible to the naked eye.^[3]

HR 968

Location of HR 968 (circled in red)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Eridanus[1]
Right ascension	03h 12m 25.75s[2]
Declination	−44° 25′ 10.8″[2]
Apparent magnitude (V)	5.93[3]
Characteristics
Spectral type	F7III+A0V[3]
B−V color index	+0.44[3]
Astrometry
Proper motion (μ)	RA: +81.63[2] mas/yr Dec.: −4.57[2] mas/yr
Parallax (π)	23.53±0.62 mas[2]
Distance	139 ± 4 ly (42 ± 1 pc)
Absolute magnitude (MV)	+2.78[1]
Orbit[4]
Period (P)	44.93 yr
Semi-major axis (a)	0.399″
Eccentricity (e)	0.891
Inclination (i)	180°
Details[4]
A
Mass	1.34 M☉
B
Mass	1.24 M☉
C
Mass	0.87 M☉
Other designations
CD−44°1025, HD 20121, HR 968, SAO 216209[5]
Database references
SIMBAD	data
	A
	B
	C