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 |
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