This is an old revision of this page, as edited by Mike s (talk | contribs) at 21:31, 6 January 2012 (add sentence and wikilink to XO Project). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
Revision as of 21:31, 6 January 2012 by Mike s (talk | contribs) (add sentence and wikilink to XO Project)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)The XO Telescope is a telescope located on the 3,054 m summit of Haleakala on Maui, Hawaii, formed by a pair of 200 mm telephoto lenses. It is used by the XO Project to detect extrasolar planets using the transit method. It is similar to the TrES survey telescope. The construction of the one-of-a-kind telescope cost $60,000 for the hardware, and much more than that for the associated software.
Planets discovered
The XO telescope has discovered five objects so far, four are hot Jupiter planets and one, XO-3b, is probably a brown dwarf. All were discovered using the transit method.
| Star | Constellation | Right ascension |
Declination | App. mag. |
Distance (ly) | Spectral type |
Planet | Mass (MJ) |
Radius (RJ) |
Orbital period (d) |
Semimajor axis (AU) |
Orbital eccentricity |
Inclination (°) |
Discovery year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XO-1 | Corona Borealis | 16 02 12 | +28° 10′ 11″ | 11.319 | 600 | G1V | XO-1b | 0.9 | 1.3 | 3.941534 | 0.0488 | 0 | 87.7 | 2006 |
| XO-2 | Lynx | 07 48 07 | +50° 13′ 33″ | 11.25 | 486 | K0V | XO-2b | 0.57 | 0.973 | 2.615838 | 0.0369 | 0 | 88.58 | 2007 |
| XO-3 | Camelopardalis | 04 21 53 | +57° 49′ 01″ | 9.91 | 850 | F5V | XO-3b | 11.79 | 1.217 | 3.1915239 | 0.0454 | 0.26 | 84.2 | 2007 |
| XO-4 | Lynx | 07 21 33.1657 | +58° 16′ 05.005″ | 10.78 | 956 | F5V | XO-4b | 1.72 | 1.34 | 4.12502 | 0.0555 | 0.0024 | 88.7 | 2008 |
| XO-5 | Lynx | 07 46 51.959 | +39° 05′ 40.47″ | 12.1 | 881 | G8V | XO-5b | 1.15 | 1.15 | 4.187732 | 0.0508 | 0.0029 | 86.8 | 2008 |
See also
A subset of XO light curves are available at the NASA Star and Exoplanet Database.
Other Ground Transit Surveys
- Trans-Atlantic Exoplanet Survey or TrES
- HATNet Project or HAT
References
- McCullough; Stys, J. E.; Valenti, J. A.; Fleming, S. W.; Janes, K. A.; Heasley, J. N.; et al. (2005). "The XO Project: Searching for Transiting Extrasolar Planet Candidates". Publications of the Astronomical Society of the Pacific. 117 (834): 783–795. arXiv:astro-ph/0505560. Bibcode:2005PASP..117..783M. doi:10.1086/432024.
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External links
- The XO Project website
- Astronomers Catch Planet By Unusual Means (SpaceDaily) May 19, 2006
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