| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Reticulum |
| Right ascension | 03h 39m 23.63799s[1] |
| Declination | −60° 04′ 40.2386″[1] |
| Apparent magnitude (V) | +8.576±0.002[2] |
| Characteristics | |
| Spectral type | G2V[3] |
| B−V color index | 0.701±0.013[2] |
| Astrometry | |
| Radial velocity (Rv) | +21.9±1.7[4] km/s |
| Proper motion (μ) | RA: 73.621±0.042[1] mas/yr Dec.: 142.847±0.045[1] mas/yr |
| Parallax (π) | 10.6258 ± 0.0232 mas[1] |
| Distance | 306.9 ± 0.7 ly (94.1 ± 0.2 pc) |
| Absolute magnitude (MV) | 3.62[4] |
| Details[2] | |
| Mass | 1.208±0.045 M☉ |
| Radius | 1.490±0.104 R☉ |
| Luminosity | 3.01±0.03[5] L☉ |
| Surface gravity (log g) | 4.146±0.054 cgs |
| Temperature | 5,843±52 K |
| Metallicity [Fe/H] | 0.29±0.03 dex |
| Rotation | ~33 days |
| Age | 4.508±0.788 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 23127 is a star in the southern constellation of Reticulum. With an apparent visual magnitude of +8.58[4] it is not visible to the naked eye, but can be viewed with a good pair of binoculars. The star is located at a distance of 307 light years from the Sun based on parallax, and is drifting further away with a radial velocity of ~22 km/s.[4] It has an absolute magnitude of 3.62.[4]
This is a G-type main-sequence star with a stellar classification of G2V,[3] which means it is generating energy through core hydrogen fusion. HD 23127 is more massive than the Sun at 1.21 solar masses and has a 49% larger radius. It is metal-rich, having nearly double the abundance of iron in its atmosphere compared to the Sun. This star has an age of 4.5 billion years;[2] about the same as the Sun.
On Friday, February 9, 2007, a 3.32 years period jovian planet was found by using the wobble method by O'Toole and colleagues in Australia.[7] It has minimum mass 53% greater than Jupiter and orbits with a 41% eccentricity. The maximum stable period for a hypothetical inner planet is 322.1 days.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥1.527+0.037 −0.038 MJ |
2.370±0.032 | 1,211.17+11.11 −8.91 |
0.406+0.083 −0.09 |
— | — |
Gaia DR2 was invoked but never defined (see the help page).Barbato_et_al_2018 was invoked but never defined (see the help page).Houk1979 was invoked but never defined (see the help page).Anderson2012 was invoked but never defined (see the help page).Bonfanti2015 was invoked but never defined (see the help page).Simbad was invoked but never defined (see the help page).O'Toole2007 was invoked but never defined (see the help page).