WASP-4
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Phoenix |
| Right ascension | 23h 34m 15.06s[1] |
| Declination | −42° 03′ 41.1″[1] |
| Apparent magnitude (V) | 12.5[2] |
| Characteristics | |
| Spectral type | G7V[1] |
| Apparent magnitude (V) | 13.0[1] |
| Apparent magnitude (R) | 11.9[1] |
| Variable type | V*(1SWASP)[1] |
| Astrometry | |
| Distance | 1000 ± 160 ly (300 ± 50[2] pc) |
| Details | |
| Mass | 0.85 +0.11-0.07[3] M☉ |
| Radius | 0.87 +0.04-0.03[3] R☉ |
| Surface gravity (log g) | 4.45+0.016 −0.029[2] cgs |
| Temperature | 5500 ± 150[2] K |
| Metallicity | [M/H]=0.0 ± 0.2[2] |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia |
data |
WASP-4 is a G-type main sequence star approximately 1,000 light-years away in the constellation of Phoenix.[1]
Planetary system
In 2007, an extrasolar planet, WASP-4b, was discovered orbiting this star.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| WASP-4b | 1.237 ± 0.064[4] MJ | 0.0230±0.001 | 1.3382282±0.000003 | 0 | — | — |
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 WASP-4, entry, SIMBAD. Accessed on line June 19, 2008.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 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.
- Lua error in package.lua at line 80: module 'strict' not found.
Coordinates: 
23h 34m 15.06s, −42° 03′ 41.1″
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