HD 18742
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 03h 00m 10.65643s |
| Declination | −20° 48′ 09.3773″ |
| Apparent magnitude (V) | 7.81 |
| Characteristics | |
| Spectral type | G8/K0IV |
| B−V color index | 0.93 |
| J−H color index | 0.472 |
| J−K color index | 0.623 |
| Astrometry | |
| Radial velocity (Rv) | −13.29 km/s |
| Proper motion (μ) | RA: -19.599 mas/yr Dec.: −22.666 mas/yr |
| Parallax (π) | 6.1858±0.0248 mas |
| Distance | 527 ± 2 ly (161.7 ± 0.6 pc) |
| Details | |
| Mass | 1.36, 1.73±0.19 M☉ |
| Radius | 5.13 R☉ |
| Luminosity | 13.18+5.44 −3.85, 20.66±0.46 L☉ |
| Surface gravity (log g) | 3.09 cgs |
| Temperature | 4940 K |
| Metallicity [Fe/H] | −0.14 dex |
| Rotational velocity (v sin i) | 1.72±0.23, 2.98±0.50 km/s |
| Age | 2.49±0.58 Gyr |
| Other designations | |
| BD−21° 533, CPD−21° 295, Gaia DR1 5079636964618154112, Gaia DR2 5079636934554540160, HD 18742, HIP 13993, SAO 168212, PPM 245676, TIC 71345433, TYC 5870-602-1, GSC 05870-00602, 2MASS J03001065-2048091 | |
| Database references | |
| SIMBAD | data |
HD 18742 (proper name Ayeyarwady) is a 8th-magnitude subgiant star located about 530 light-years (160 pc) away in the constellation of Eridanus. It is orbited by one confirmed exoplanet, super-Jupiter HD 18742 b (proper name Bagan), and possibly by another Jovian planetary candidate (HD 18742 c).