Lupus-TR-3b
Lupus-TR-3b is an extrasolar planet orbiting the star Lupus-TR-3 (a K-type main sequence star approximately 8,950 light-years away in the constellation Lupus). The planet was discovered in 2007 by personnel from the Harvard-Smithsonian Center for Astrophysics observing at the Siding Spring Observatory in Australia, by the transit method.
 Size comparison of Lupus-TR-3b with Jupiter. | |
| Discovery | |
|---|---|
| Discovered by | Weldrake et al. |
| Discovery site | Siding Spring Observatory |
| Discovery date | November 12, 2007 |
| Transit | |
| Orbital characteristics | |
| 0.0464 ± 0.0007 AU (6,940,000 ± 100,000 km) | |
| Eccentricity | 0 |
| 3.91405 ± 4e-5 d | |
| Inclination | 88.3+1.3−0.8 |
| 2453887.0818 | |
| Semi-amplitude | 114 ± 25 |
| Star | Lupus-TR-3 |
| Physical characteristics | |
Mean radius | 0.89 ± 0.07 RJ |
| Mass | 0.81 ± 0.18 MJ |
Mean density | 1,400 ± 400 kg/m3 (2,360 ± 670 lb/cu yd) |
The planet has four-fifths the mass of Jupiter, nine-tenths the radius, and has density of 1.4 g/cm³. This planet is a typical “Hot Jupiter” as it orbits at 0.0464 AU distance from the star, taking 3.9 days to orbit. It is currently the faintest ground-based detection of a transiting planet.[1]
See also
- Harvard-Smithsonian Center for Astrophysics
References
- Weldrake; Bayliss, Daniel D. R.; Sackett, Penny D.; Tingley, Brandon W.; Gillon, Michaël; Setiawan, Johny (2008). "Lupus-TR-3b: A Low-Mass Transiting Hot Jupiter in the Galactic Plane?". The Astrophysical Journal Letters. 675 (1): L37–L40. arXiv:0711.1746. Bibcode:2008ApJ...675L..37W. doi:10.1086/529519.
External links
- Bayliss; Weldrake, David T. F.; Sackett, Penny D.; Tingley, Brandon W.; Lewis, Karen M. (2009). "THE LUPUS TRANSIT SURVEY FOR HOT JUPITERS: RESULTS AND LESSONS". The Astronomical Journal. 137 (5): 4368–4376. arXiv:0903.5121. Bibcode:2009AJ....137.4368B. doi:10.1088/0004-6256/137/5/4368.
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