HD 72337
Star in the constellation Volans
From Wikipedia, the free encyclopedia
HD 72337, also known as HR 3370, is a solitary,[13] bluish-white hued star located in the southern constellation Volans. With an apparent magnitude of 5.51,[3] it is faintly visible to the unaided eye but only under ideal conditions.
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Volans[1] |
| Right ascension | 08h 27m 16.7555s[2] |
| Declination | −70° 05′ 36.541″[2] |
| Apparent magnitude (V) | 5.51±0.01[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | A0 V[4] |
| U−B color index | −0.04[5] |
| B−V color index | −0.03[5] |
| Astrometry | |
| Radial velocity (Rv) | 13±7.4[6] km/s |
| Proper motion (μ) | RA: −18.630 mas/yr[2] Dec.: +45.723 mas/yr[2] |
| Parallax (π) | 11.3465±0.0387 mas[2] |
| Distance | 287.5 ± 1.0 ly (88.1 ± 0.3 pc) |
| Absolute magnitude (MV) | +0.85[1] |
| Details | |
| Mass | 2.51±0.07[7] M☉ |
| Radius | 2.26±0.06[8] R☉ |
| Luminosity | 42.5[9] L☉ |
| Surface gravity (log g) | 4.15[10] cgs |
| Temperature | 10,251±384[11] K |
| Rotational velocity (v sin i) | 149[10] km/s |
| Age | 265[10] Myr |
| Other designations | |
| 30 G. Volantis, CPD−69°919, GC 11620, HD 72337, HIP 41451, HR 3370, SAO 250235[12] | |
| Database references | |
| SIMBAD | data |
Velocity
Based on recent parallax measurements from the Gaia spacecraft, HD 72337 is currently located at a distance of 287 light years.[2] The object made its closest approach 1.914 million years ago when it was 234 light years distant.[1] At that distance, it brightened slightly to an apparent magnitude of 5.13.[1] Currently, HR 3370 is receding with a heliocentric radial velocity of 10.7 km/s.[6]
Properties
The stellar classification of HD 72337 is A0 V,[4] indicating that it is an ordinary A-type main-sequence star. It has 2.25 times the radius of the Sun[8] and a mass of 2.51 M☉.[7] It radiates at 42.5 times the luminosity of the Sun[9] from its photosphere at an effective temperature of 10,251 K.[11] Like many hot stars, HD 72337 rotates rapidly with a projected rotational velocity of 149 km/s, and is estimated to be 265 million years old.[10]