HD 177406
From Wikipedia, the free encyclopedia
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Telescopium |
| Right ascension | 19h 06m 55.60698s[1] |
| Declination | −48° 17′ 56.9195″[1] |
| Apparent magnitude (V) | 5.95±0.01[2] |
| Characteristics | |
| Evolutionary stage | main sequence star[1] |
| Spectral type | A0 V[3] |
| U−B color index | −0.02[4] |
| B−V color index | −0.01[4] |
| Astrometry | |
| Radial velocity (Rv) | −6.2±1.6[5] km/s |
| Proper motion (μ) | RA: +13.500 mas/yr[1] Dec.: −12.738 mas/yr[1] |
| Parallax (π) | 8.8414±0.0541 mas[1] |
| Distance | 369 ± 2 ly (113.1 ± 0.7 pc) |
| Absolute magnitude (MV) | +0.60[6] |
| Details | |
| Mass | 2.64+0.43 −0.28[7] M☉ |
| Radius | 2.55±0.13[8] R☉ |
| Luminosity | 62.4+1.5 −1.4[1] L☉ |
| Surface gravity (log g) | 4.00[9] cgs |
| Temperature | 10,275+229 −194[7] K |
| Metallicity [Fe/H] | 0.00[10] dex |
| Rotation | 27.2 d[11] |
| Rotational velocity (v sin i) | 50 - 100[12] km/s |
| Age | 286±9[13][10] Myr |
| Other designations | |
| 47 G. Telescopii[14], CD−48°12901, CPD−48°10045, FK5 3523, GC 26272, HD 177406, HIP 93862, HR 7223, SAO 229493[15] | |
| Database references | |
| SIMBAD | data |
HD 177406, also known as HR 7223 or rarely 47 G. Telescopii, is a solitary star[16] located in the southern constellation Telescopium. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.95.[2] Gaia DR3 parallax measurements imply a distance of 369 light years[1] and it is currently approaching the Solar System with a heliocentric radial velocity of −6.2 km/s.[5] At its current distance, HD 177406's brightness is diminished by 0.23 magnitudes due to interstellar dust[17] and it has an absolute magnitude of +0.60.[6]
HD 177406 has a stellar classification of A0 V,[3] indicating that it is an ordinary A-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 2.64 times the mass of the Sun[7] and a radius 2.55 times that of the Sun.[8] It radiates 62.4 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 10,275 K.[7] It has a solar metallicity at [Fe/H] = +0.00 and it is estimated to be 286 million years old,[13] having completed 58.66% of its main sequence lifetime.[1]
