Global InformationHD 56405 information
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Canis Major |
| Right ascension | 07h 16m 14.55342s[1] |
| Declination | −15° 35′ 08.4724″ |
| Apparent magnitude (V) | 5.45[2] |
| Characteristics | |
| Spectral type | A1V[3] |
| B−V color index | 0.079±0.005[4] |
| Astrometry | |
| Radial velocity (Rv) | +6.30±0.9[5] km/s |
| Proper motion (μ) | RA: -46.118[1] mas/yr Dec.: -15.488[1] mas/yr |
| Parallax (π) | 13.1152 ± 0.1293 mas[1] |
| Distance | 249 ± 2 ly (76.2 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.88[4] |
| Details | |
| Mass | 2.13[6] M☉ |
| Luminosity | 38.86[4] L☉ |
| Surface gravity (log g) | 4.14±0.14[6] cgs |
| Temperature | 9,562±325[6] K |
| Rotational velocity (v sin i) | 149[6] km/s |
| Age | 212[6] Myr |
| Other designations | |
BD−15°1734, FK5 2561, GC 9657, GJ 9228, HD 56405, HIP 35180, HR 2758, SAO 152641, TYC 5965-363-1[7] | |
| Database references | |
| SIMBAD | data |
HD 56405 is a star in the southern constellation of Canis Major. It is white in hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.45.[2] To the east of HD 56405 is the open cluster NGC 2360, also known as Caroline's Cluster.[8] The distance to HD 56405, as determined from parallax measurements, is approximately 249 light years. It is drifting further away with a radial velocity (RV) of about +6 km/s.[5] Although classed as a single star,[9] it is to suspected to vary in RV.[10]
This is an A-type main-sequence star with a stellar classification of A1V.[3] It was classed as a candidate Lambda Boötis star,[11] but as of 2015 this classification has been rejected by astronomers due to the star having an inconsistent UV flux, possible RV variability, and a fairly high rotation rate.[2] The star is about 212 million years old with 2.13 times the mass of the Sun and is spinning with a projected rotational velocity of 149 km/s.[6] It is radiating 39[4] times the luminosity of the Sun from its photosphere at an effective temperature of around 9,562 K.[6]
- ^ a b c d Cite error: The named reference
GaiaDR2was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
Murphy2015was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
houk1978was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
Anderson2012was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Gontcharov2006was invoked but never defined (see the help page). - ^ a b c d e f g Cite error: The named reference
David2015was invoked but never defined (see the help page). - ^ Cite error: The named reference
SIMBADwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Streicher2005was invoked but never defined (see the help page). - ^ Cite error: The named reference
Eggleton2008was invoked but never defined (see the help page). - ^ Cite error: The named reference
Gerbaldi2003was invoked but never defined (see the help page). - ^ Cite error: The named reference
Renson1990was invoked but never defined (see the help page).