NW Puppis
B-type star in the constellation Puppis / From Wikipedia, the free encyclopedia
NW Puppis, also known as υ2 Puppis, is a star in the constellation Puppis. Located around 910 light-years distant, it shines with a luminosity approximately 1,108 times that of the Sun and has a surface temperature of 15,000 K.[4] Anamarija Stankov ruled this star out as a Beta Cephei variable.[6]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Puppis |
Right ascension | 07h 18m 38.18632s[1] |
Declination | −36° 44′ 33.8557″[1] |
Apparent magnitude (V) | 5.11[2] |
Characteristics | |
Spectral type | B3 Vne |
Variable type | β Cep[2] |
Astrometry | |
Radial velocity (Rv) | +18.00±10[3] km/s |
Proper motion (μ) | RA: −10.848[1] mas/yr Dec.: +6.699[1] mas/yr |
Parallax (π) | 3.5875 ± 0.1683 mas[1] |
Distance | 910 ± 40 ly (280 ± 10 pc) |
Details | |
Luminosity | 1,108[4] L☉ |
Surface gravity (log g) | 4.07±0.57[5] cgs |
Temperature | 17,930±540[5] K |
Rotational velocity (v sin i) | 80±8[5] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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Neither component of this double is given a letter in Lacaille's catalogue or the British Association star catalogue.[7][8] Gould gave them the designations (Latin letter) v1 and v2 Puppis, but these are rarely used.[9] Lacaille applied the Greek letter υ to the star now called υ Carinae.[7] The designation υ2 first appeared in several catalogues at the end of the 19th century.[10]