Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Puppis |
Right ascension | 06h 37m 45.67135s [1] |
Declination | −43° 11′ 45.3602″ [1] |
Apparent magnitude (V) | 3.173 [2] |
Characteristics | |
Spectral type | B8 III [3] |
U−B color index | −0.397 [2] |
B−V color index | −0.113 [2] |
Astrometry | |
Radial velocity (Rv) | +30.9 [4] km/s |
Proper motion (μ) |
RA: −0.44
[1]
mas/
yr Dec.: −3.87 [1] mas/ yr |
Parallax (π) | 8.78 ± 0.26 mas [1] |
Distance | 370 ± 10
ly (114 ± 3 pc) |
Absolute magnitude (MV) | −2.11 [5] |
Details | |
Radius | 4.2 [6] R☉ |
Luminosity | 767 [7] L☉ |
Luminosity (bolometric) | 1,340 [8] L☉ |
Temperature | 12,120 [9] K |
Rotational velocity (v sin i) | 225 [10] km/s |
Other designations | |
Database references | |
SIMBAD | data |
Nu Puppis (ν Puppis) is a solitary, [12] blue-hued star in the southern constellation of Puppis. It is the fifth-brightest star in Puppis, with an apparent visual magnitude of 3.17. [2] Based upon an annual parallax shift of 8.78 mas as seen from Earth, [1] it is located about 370 light years from the Sun. The system made its closest approach about 3.6 million years ago when it underwent perihelion passage at a distance of roughly 27 light years. [13]
The star has a stellar classification of B8 III, [3] matching a B-type giant. Absorption lines in the spectrum are displaying central quasi-emission peaks, indicating this is a Be shell star with a circumstellar disk of heated gas that is being seen edge-on. [14] ν Puppis is a candidate variable star showing an amplitude of 0.0117 magnitude with a frequency of 0.15292 per day. [15] It is spinning rapidly with a projected rotational velocity of 225 km/s. This rotation is giving the star an oblate shape, with the equator being 31% larger than the poles. [10] It is radiating (after allowance for ultraviolet radiation) 1,340 [8] times the Sun's luminosity from its photosphere at an effective temperature of 12,120 K. [9]
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link)
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Puppis |
Right ascension | 06h 37m 45.67135s [1] |
Declination | −43° 11′ 45.3602″ [1] |
Apparent magnitude (V) | 3.173 [2] |
Characteristics | |
Spectral type | B8 III [3] |
U−B color index | −0.397 [2] |
B−V color index | −0.113 [2] |
Astrometry | |
Radial velocity (Rv) | +30.9 [4] km/s |
Proper motion (μ) |
RA: −0.44
[1]
mas/
yr Dec.: −3.87 [1] mas/ yr |
Parallax (π) | 8.78 ± 0.26 mas [1] |
Distance | 370 ± 10
ly (114 ± 3 pc) |
Absolute magnitude (MV) | −2.11 [5] |
Details | |
Radius | 4.2 [6] R☉ |
Luminosity | 767 [7] L☉ |
Luminosity (bolometric) | 1,340 [8] L☉ |
Temperature | 12,120 [9] K |
Rotational velocity (v sin i) | 225 [10] km/s |
Other designations | |
Database references | |
SIMBAD | data |
Nu Puppis (ν Puppis) is a solitary, [12] blue-hued star in the southern constellation of Puppis. It is the fifth-brightest star in Puppis, with an apparent visual magnitude of 3.17. [2] Based upon an annual parallax shift of 8.78 mas as seen from Earth, [1] it is located about 370 light years from the Sun. The system made its closest approach about 3.6 million years ago when it underwent perihelion passage at a distance of roughly 27 light years. [13]
The star has a stellar classification of B8 III, [3] matching a B-type giant. Absorption lines in the spectrum are displaying central quasi-emission peaks, indicating this is a Be shell star with a circumstellar disk of heated gas that is being seen edge-on. [14] ν Puppis is a candidate variable star showing an amplitude of 0.0117 magnitude with a frequency of 0.15292 per day. [15] It is spinning rapidly with a projected rotational velocity of 225 km/s. This rotation is giving the star an oblate shape, with the equator being 31% larger than the poles. [10] It is radiating (after allowance for ultraviolet radiation) 1,340 [8] times the Sun's luminosity from its photosphere at an effective temperature of 12,120 K. [9]
{{
cite web}}
: CS1 maint: postscript (
link)