| Lupus-TR-3b | |
| Discoverer: | Weldrake et al. |
| Discovery Site: | Siding Spring Observatory |
| Discovered: | November 12, 2007 |
| Apsis: | astron |
| Semimajor: | 0.0464± |
| Eccentricity: | 0 |
| Period: | 3.91405 ± 4e-5 d |
| Inclination: | 88.3+1.3−0.8 |
| Time Periastron: | 2453887.0818 |
| Semi-Amplitude: | 114 ± 25 |
| Mean Radius: | 0.89 ± 0.07 |
| Mass: | 0.81 ± 0.18 |
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 Center for Astrophysics Harvard & Smithsonian observing at the Siding Spring Observatory in Australia, by the transit method.
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]