Zeta Reticuli
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Reticulum |
| ζ1 Ret | |
| Right ascension | 03h 17m 46.16345s |
| Declination | −62° 34′ 31.1525″ |
| Apparent magnitude (V) | 5.52 |
| ζ2 Ret | |
| Right ascension | 03h 18m 12.81888s |
| Declination | −62° 30′ 22.9047″ |
| Apparent magnitude (V) | 5.22 |
| Characteristics | |
| Spectral type | G3−5V + G2V |
| U−B color index | +0.08 / +0.01 |
| B−V color index | +0.63 / +0.58 |
| R−I color index | +0.34 / +0.34 |
| Astrometry | |
| ζ1 Ret | |
| Radial velocity (Rv) | +12.44±0.12 km/s |
| Proper motion (μ) | RA: +1,337.5 mas/yr Dec.: +649.8 mas/yr |
| Parallax (π) | 83.0240±0.0438 mas |
| Distance | 39.28 ± 0.02 ly (12.045 ± 0.006 pc) |
| Absolute magnitude (MV) | 5.11±0.01 |
| Absolute bolometric magnitude (Mbol) | 5.03±0.03 |
| ζ2 Ret | |
| Radial velocity (Rv) | +11.94±0.13 km/s |
| Proper motion (μ) | RA: +1,331 mas/yr Dec.: +647.725 mas/yr |
| Parallax (π) | 83.0606 ± 0.0608 mas |
| Distance | 39.27 ± 0.03 ly (12.039 ± 0.009 pc) |
| Absolute magnitude (MV) | 4.83 |
| Absolute bolometric magnitude (Mbol) | 4.79±0.03 |
| Details | |
| ζ1 Ret | |
| Mass | 0.95+0.02 −0.01 M☉ |
| Radius | 0.92±0.02 R☉ |
| Luminosity | 0.80±0.04 L☉ |
| Surface gravity (log g) | 4.53±0.01 cgs |
| Temperature | 5,737±7 K |
| Metallicity [Fe/H] | −0.224±0.004 dex |
| Rotational velocity (v sin i) | 2.2±0.8 km/s |
| Age | 3.40+0.72 −0.43 Gyr |
| ζ2 Ret | |
| Mass | 0.91±0.05 M☉ |
| Radius | 0.98±0.02 R☉ |
| Luminosity | 1.01±0.06 L☉ |
| Surface gravity (log g) | 4.43±0.10 cgs |
| Temperature | 5,846+52 −59 K |
| Metallicity [Fe/H] | −0.26±0.03 dex |
| Rotational velocity (v sin i) | 1.74 km/s |
| Age | 1.5–3.0 Gyr |
| Other designations | |
| ζ Reticuli, WDS J03182-6230 | |
| ζ1 Reticuli: ζ1 Ret, Zeta1 Ret, CPD−63°217, GJ 136, HD 20766, HIP 15330, HR 1006, SAO 248770, LFT 275, LHS 171, LTT 1573 | |
| ζ2 Reticuli: ζ2 Ret, Zeta2 Ret, CPD−62°265, GJ 138, HD 20807, HIP 15371, HR 1010, SAO 248774, LFT 276, LHS 172, LTT 1576 | |
| Database references | |
| SIMBAD | ζ1 Ret |
| ζ2 Ret | |
Zeta Reticuli, Latinized from ζ Reticuli, is a wide binary star system in the southern constellation of Reticulum. From the southern hemisphere the pair can be seen with the naked eye as a double star in very dark skies. Based upon parallax measurements, this system is located at a distance of about 39.3 light-years (12 parsecs) from Earth. Both stars are solar analogs that have characteristics similar to those of the Sun. They belong to the Zeta Herculis Moving Group of co-moving stars that share a common origin.