Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Puppis |
Right ascension | 07h 39m 27.33834s[1] |
Declination | −38° 18′ 28.8786″[1] |
Apparent magnitude (V) | 4.84[2] |
Characteristics | |
Spectral type | B2.5V[3] |
U−B color index | -0.66[2] |
B−V color index | -0.19[2] |
Astrometry | |
Radial velocity (Rv) | +26.40[4] km/s |
Proper motion (μ) | RA: -21.11[1] mas/yr Dec.: +15.81[1] mas/yr |
Parallax (π) | 5.87 ± 0.16 mas[1] |
Distance | 560 ± 20 ly (170 ± 5 pc) |
Absolute magnitude (MV) | -1.51[5] |
Details | |
Mass | 6.5[6] M☉ |
Luminosity | 1,300[5] L☉ |
Temperature | 16,849[5] K |
Metallicity [Fe/H] | 0.00[7] dex |
Rotational velocity (v sin i) | 138[3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 61831 (d1 Puppis) is a class B2.5V[3] (blue dwarf) star in the constellation Puppis. Its apparent magnitude is 4.84[2] and it is approximately 556 light years away based on parallax.[1]