| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 145377 | |
| Constellation | Scorpius | |
| Right ascension | (α) | 16h 11m 36.4455s |
| Declination | (δ) | –27° 04′ 41.421″ |
| Apparent magnitude | (mV) | 8.12 |
| Distance | 188 ± 10 ly (57.7 ± 3 pc) |
|
| Spectral type | G3V | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.45 ± 0.004 AU (67 ± 0.6 Gm) |
| Periastron | (q) | 0.31 AU (46 Gm) |
| Apastron | (Q) | 0.59 AU (88 Gm) |
| Eccentricity | (e) | 0.307 ± 0.017 |
| Orbital period | (P) | 103.95 ± 0.13 d (0.28459 ± 0.00036 y) |
| Orbital speed | (υ) | 47.3 km/s |
| Argument of periastron |
(ω) | 138.1 ± 2.8° |
| Time of periastron | (T0) | 2,454,635.4 ± 0.6 JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 5.76 ± 0.01 MJ (1830 ± 3 M⊕) |
| Discovery information | ||
| Discovery date | October 26, 2008 | |
| Discoverer(s) | Moutou et al. | |
| Detection method | Doppler spectroscopy (HARPS) |
|
| Discovery site | La Silla Observatory | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
HD 145377 b is an extrasolar planet located approximately 188 light-years away in the constellation of Scorpius, orbiting the 8th magnitude G-type main sequence star HD 145377. This planet orbits at a distance of 0.45 astronomical units and takes 104 days to revolve around the star with an eccentricity of 0.307. It has mass of 5.76 times that of Jupiter, however the mass value is only minimum since the inclination of the orbit is not known.
This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO’s 3.6 meter telescope installed at La Silla Observatory in Atacama desert, Chile.