XO-3
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 04h 21m 52.7048s |
| Declination | +57° 49′ 01.889″ |
| Apparent magnitude (V) | 9.80 ± 0.03 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F5V |
| Apparent magnitude (B) | 10.25 ± 0.03 |
| Apparent magnitude (V) | 9.80 ± 0.03 |
| Apparent magnitude (J) | 9.013 ± 0.029 |
| Apparent magnitude (H) | 8.845 ± 0.018 |
| Apparent magnitude (K) | 8.791 ± 0.019 |
| Astrometry | |
| Radial velocity (Rv) | −11.14±0.47 km/s |
| Proper motion (μ) | RA: −2.721(27) mas/yr Dec.: 4.186(23) mas/yr |
| Parallax (π) | 4.8687±0.0261 mas |
| Distance | 670 ± 4 ly (205 ± 1 pc) |
| Details | |
| Mass | 1.449+0.056 −0.058 M☉ |
| Radius | 1.523±0.027 R☉ |
| Luminosity | 4.92+0.40 −0.34 L☉ |
| Surface gravity (log g) | 4.234+0.013 −0.014 cgs |
| Temperature | 6970+110 −100 K |
| Metallicity [Fe/H] | −0.159+0.058 −0.069 dex |
| Rotational velocity (v sin i) | 18.63±0.24 km/s |
| Age | 0.97+0.36 −0.29 Gyr |
| Other designations | |
| XO-3, BD+57 793, TOI-1676, TIC 8400842, TYC 3727-1064-1, GSC 03727-01064, 2MASS J04215269+5749018 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
XO-3 is a star 670 light-years (210 parsecs) away in the constellation Camelopardalis. The star has a magnitude of 10 and is not visible to the naked eye but is visible through a small telescope. A search for a binary companion star using adaptive optics at the MMT Observatory was negative.