Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Columba |
Right ascension | 05h 19m 23.685s[1] |
Declination | −27° 22′ 07.98″[1] |
Apparent magnitude (V) | 5.972±0.002[2] |
Characteristics | |
Spectral type | A0 V[3] or A1 IV[4] |
B−V color index | −0.04[5] |
Astrometry | |
Radial velocity (Rv) | 18±4[6] km/s |
Proper motion (μ) | RA: −3.366 mas/yr[1] Dec.: −8.459 mas/yr[1] |
Parallax (π) | 7.9531 ± 0.0288 mas[1] |
Distance | 410 ± 1 ly (125.7 ± 0.5 pc) |
Absolute magnitude (MV) | +0.35[4] |
Details | |
Mass | 2.73±0.08[7] M☉ |
Radius | 3.00±0.44[8] R☉ |
Luminosity | 82.3+13 −11.3[7] L☉ |
Surface gravity (log g) | 3.94[9] cgs |
Temperature | 9,908±92[7] K |
Metallicity [Fe/H] | −0.12[9] dex |
Rotational velocity (v sin i) | 103[10] km/s |
Age | 245±19[7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 34868 (HR 1758) is a solitary star located in the southern constellation Columba. With an apparent magnitude of 5.97, it's barely visible to the unaided eye. The star is located 410 light years away based on parallax, but is drifting away with a heliocentric radial velocity of 18 km/s.
HD 34868 is an ordinary A-type main-sequence star with a mass of 2.73 solar masses, and a radius of 3 solar radii. It radiates at 82 solar luminosities from its photosphere at an effective temperature of 9,908 K, which gives it a blueish-white hue of an A0 star. HD 34868 has a rapid projected rotational velocity of 103 km/s, and is a young star, with an age of 245 million years. However, some sources give it a classification of A1 IV, which makes it a subgiant star.