HAT-P-3
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(Redirected from GSC 03466-00819)
| Observation data Epoch 2000 Equinox 2000 |
|
|---|---|
| Constellation | Ursa Major[1] |
| Right ascension | 13h 44m 22.592s[2] |
| Declination | +48° 01′ 43.22″[2] |
| Apparent magnitude (V) | 11.577 ± 0.067[3] |
| Characteristics | |
| Spectral type | K[4] |
| Apparent magnitude (B) | 12.53 ± 0.20[5] |
| Apparent magnitude (V) | 11.577 ± 0.067[3] |
| Apparent magnitude (I) | 10.504 ± 0.079[3] |
| Apparent magnitude (J) | 9.936 ± 0.022[5] |
| Apparent magnitude (H) | 9.542 ± 0.028[5] |
| Apparent magnitude (K) | 9.448 ± 0.025[5] |
| Astrometry | |
| Proper motion (μ) | RA: –21.8 ± 0.7[2] mas/yr Dec.: –25.0 ± 1.1[2] mas/yr |
| Distance | 450 ± 33[6] ly (138 ± 10[6] pc) |
| Absolute magnitude (MV) | 5.87 ± 0.15[6] |
| Details | |
| Mass | 0.917 ± 0.030[6] M☉ |
| Radius | 0.799 ± 0.039[6] R☉ |
| Luminosity | 0.435 ± 0.053[6] L☉ |
| Surface gravity (log g) | 4.58 ± 0.03[7] cgs |
| Temperature | 5224 ± 69[7] K |
| Metallicity [Fe/H] | 0.41 ± 0.08[7] dex |
| Rotational velocity (v sin i) | 1.5 ± 1.0[7] km/s |
| Age | 1.6 +2.9 −1.3[6] Myr |
| Other designations | |
HAT-P-3, is a metal-rich K star located about 450 light-years away in the constellation Ursa Major. At a magnitude of about 11.5 it is not visible to the naked eye but is visible in a small to medium-sized amateur telescope. It is believed to be a relatively young star and has a slightly enhanced level of chromospheric activity.[4][8]
Planetary system
This star is home to the extrasolar planet HAT-P-3b discovered by the HATNet Project using the transit method.[4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.591 ± 0.018 MJ | 0.03866 ± 0.00042 | 2.8997382 ± 0.0000009 | 0(Adopted) | 87.07 ± 0.55° | 0.827 ± 0.055 RJ |
See also
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found. Vizier query form
- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.Vizier catalog entry
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.Vizier catalog entry
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 5.2 5.3 5.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 7.2 7.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- Lua error in package.lua at line 80: module 'strict' not found.
Coordinates: 
13h 44m 23s, +48° 01′ 43″
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