XO-3
From Infogalactic: the planetary knowledge core
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Camelopardalis[1] |
| Right ascension | 04h 21m 52.707s[2] |
| Declination | +57° 49′ 01.87″[2] |
| Apparent magnitude (V) | 9.80 ± 0.03[3] |
| Characteristics | |
| Spectral type | F5V[3] |
| Apparent magnitude (B) | 10.25 ± 0.03[3] |
| Apparent magnitude (V) | 9.80 ± 0.03[3] |
| Apparent magnitude (J) | 9.013 ± 0.029[4] |
| Apparent magnitude (H) | 8.845 ± 0.018[4] |
| Apparent magnitude (K) | 8.791 ± 0.019[4] |
| Astrometry | |
| Proper motion (μ) | RA: –3.2 ± 0.6[2] mas/yr Dec.: 3.2 ± 0.7[2] mas/yr |
| Distance | 568 ± 59[5] ly (174 ± 18[5] pc) |
| Details | |
| Mass | 1.213 ± 0.066[5] M☉ |
| Radius | 1.377 ± 0.083[5] R☉ |
| Luminosity | 2.92+0.59 −0.48[5] L☉ |
| Surface gravity (log g) | 4.244 ± 0.041[5] cgs |
| Temperature | 6429 ± 100[5] K |
| Metallicity [Fe/H] | –0.177 ± 0.08[5] dex |
| Age | 2.82+0.58 −0.82[5] Gyr |
| Other designations | |
XO-3 is a star 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.[3] A search for a binary companion star using adaptive optics at the MMT Observatory was negative.[7]
Planetary system
In 2007 the gas giant exoplanet XO-3b was discovered by the XO Telescope using the transit method. This object may be classed as brown dwarf because of its high mass.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 11.79 ± 0.59 MJ | 0.0454 ± 0.00082 | 3.1915289 ± 0.0000032 | 0.2883 ± 0.0025 | — | — |
See also
References
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External links
- Lua error in package.lua at line 80: module 'strict' not found.
Coordinates: 
04h 21m 52.7048s, +57° 49′ 01.886″
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