Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lepus |
Right ascension | 05h 20m 26.91498s [1] |
Declination | −21° 14′ 23.1367″ [1] |
Apparent magnitude (V) | 4.69 (4.73 + 8.45) [2] |
Characteristics | |
Spectral type | A0 V [3] |
B−V color index | −0.048±0.003 [4] |
Astrometry | |
Radial velocity (Rv) | 30.9±0.5 [5] km/s |
Proper motion (μ) |
RA: +17.149
[1]
mas/
yr Dec.: −9.382 [1] mas/ yr |
Parallax (π) | 8.7188 ± 0.1661 mas [1] |
Distance | 374 ± 7
ly (115 ± 2 pc) |
Absolute magnitude (MV) | −0.82 [4] |
Details | |
HD 34968 A | |
Mass | 3.34±0.06 [6] M☉ |
Radius | 2.0 [7] R☉ |
Luminosity | 245+38 −33 [6] L☉ |
Temperature | 10,046+70 −69 [6] K |
Rotational velocity (v sin i) | 84 [6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 34968 is a binary star [2] system in the southern constellation Lepus. The combined apparent visual magnitude of 4.69 [2] is bright enough to be visible to the naked eye. The distance to HD 34968 can be estimated from its annual parallax shift of 8.7 mas, yielding a range of 374 light years. It is moving further away from the Earth with a heliocentric radial velocity of 31 km/s, [5] having come within 118.6 ly some 3,686,000 years ago. [4]
The primary member, component A, is a magnitude 4.73 star. Houk and Smith-Moore (1978) gave this object a stellar classification of A0 V, [3] indicating it is an ordinary A-type main-sequence star. Gray and Garrison (1987) classified it as B9.5 III and noted that the spectrum is slightly variable. [9] It is 99.2%±2.6% of the way through its main sequence lifetime, [6] with 3.34 [6] times the mass of the Sun and 2.0 [7] times the Sun's radius. The star is spinning with a projected rotational velocity of 84 km/s. [6] It is radiating 245 [6] times the Sun's luminosity from its photosphere at an effective temperature of 10,046 [6]
The fainter secondary, component B, is a magnitude 8.45 [2] star at an angular separation of 4.1 ″ along a position angle of 279°, as of 2008. [10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lepus |
Right ascension | 05h 20m 26.91498s [1] |
Declination | −21° 14′ 23.1367″ [1] |
Apparent magnitude (V) | 4.69 (4.73 + 8.45) [2] |
Characteristics | |
Spectral type | A0 V [3] |
B−V color index | −0.048±0.003 [4] |
Astrometry | |
Radial velocity (Rv) | 30.9±0.5 [5] km/s |
Proper motion (μ) |
RA: +17.149
[1]
mas/
yr Dec.: −9.382 [1] mas/ yr |
Parallax (π) | 8.7188 ± 0.1661 mas [1] |
Distance | 374 ± 7
ly (115 ± 2 pc) |
Absolute magnitude (MV) | −0.82 [4] |
Details | |
HD 34968 A | |
Mass | 3.34±0.06 [6] M☉ |
Radius | 2.0 [7] R☉ |
Luminosity | 245+38 −33 [6] L☉ |
Temperature | 10,046+70 −69 [6] K |
Rotational velocity (v sin i) | 84 [6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 34968 is a binary star [2] system in the southern constellation Lepus. The combined apparent visual magnitude of 4.69 [2] is bright enough to be visible to the naked eye. The distance to HD 34968 can be estimated from its annual parallax shift of 8.7 mas, yielding a range of 374 light years. It is moving further away from the Earth with a heliocentric radial velocity of 31 km/s, [5] having come within 118.6 ly some 3,686,000 years ago. [4]
The primary member, component A, is a magnitude 4.73 star. Houk and Smith-Moore (1978) gave this object a stellar classification of A0 V, [3] indicating it is an ordinary A-type main-sequence star. Gray and Garrison (1987) classified it as B9.5 III and noted that the spectrum is slightly variable. [9] It is 99.2%±2.6% of the way through its main sequence lifetime, [6] with 3.34 [6] times the mass of the Sun and 2.0 [7] times the Sun's radius. The star is spinning with a projected rotational velocity of 84 km/s. [6] It is radiating 245 [6] times the Sun's luminosity from its photosphere at an effective temperature of 10,046 [6]
The fainter secondary, component B, is a magnitude 8.45 [2] star at an angular separation of 4.1 ″ along a position angle of 279°, as of 2008. [10]