HD 330075
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| Observation data Epoch 2000 |
|
|---|---|
| Constellation (pronunciation) |
Norma |
| Right ascension | 15h 49m 37.69s |
| Declination | -49° 57' 48.69" |
| Apparent magnitude (V) | 9.0 |
| Distance | 163.7 ly (50.20 pc) |
| Spectral type | G5 |
| Other designations | |
|
CD-49°10033, HIP 77517
|
|
HD 330075 is a 9th magnitude star in the constellation of Norma. Like our Sun, it is a yellow dwarf (spectral type G5 V). However, it is slightly cooler and less luminous. Due to its distance, about 160 light years, it is rather dim and visible only with telescope or powerful binoculars.
In 2003, the discovery of a planet orbiting the star was announced.
[edit] HD 330075 b
| Orbital elements | ||
|---|---|---|
| Semi-major axis a: | 0.043 AU | |
| Eccentricity e: | 0 | |
| Orbital period P: | 3.369 ± 0.004 d | |
| Inclination i: | ?° | |
| Angular distance θ: | 0.857 mas | |
| Longitude of periastron ω: |
0° | |
| Time of periastron τ: | 2,452,878.698 ± 0.032 JD |
|
| Semi-amplitude K: | 107 ± 0.7 m/s | |
| Physical characteristics | ||
| Mass: | >0.76 MJ | |
| Radius: | ? RJ | |
| Density: | ? kg/m³ | |
| Gravity: | ? g | |
| Temperature: | ? K | |
| Discovery | ||
| Discovery date: | 2003 | |
| Discovery site: | ||
| Detection method(s): | ||
| Discoverer(s): | Pepe, Mayor, Queloz et al. |
|
| Other catalogue | ||
HD 330075 b is an extrasolar planet orbiting the star. It was discovered by the Geneva Extrasolar Planet Search team at ESO's La Silla Observatory using the very accurate HARPS instrument.
The planet has a mass about three quarters that of Jupiter. It orbits the star in a so-called "torch orbit", distance from the star being less than 1/23rd Earth's distance from the Sun. One orbit around the star takes only little more than 3 days to complete.
[edit] External links
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