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The XO Telescope is an astronomical telescope located on the 3,054 m (10,000 foot) summit of Haleakala on Maui, Hawaii. It consists of two 200-millimeter telephoto camera lenses, and resembles binoculars in shape. 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 six objects so far, five are hot Jupiter planets and one, XO-3b, may be a brown dwarf. All were discovered using the transit method.

Light green rows indicate that the planet orbits one of the stars in a binary star system.

See also

• List of extrasolar planets

A subset of XO light curves are available at the NASA Exoplanet Archive.

Other Ground-Based Transit Surveys

• Next-Generation Transit Survey
• Trans-Atlantic Exoplanet Survey or TrES
• HATNet Project or HAT
• Kilodegree Extremely Little Telescope or KELT
• SuperWASP or WASP

References

1. McCullough, P. R.; 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.
2. McCullough, P. R.; et al. (2006). "A Transiting Planet of a Sun-like Star". The Astrophysical Journal. 648 (2): 1228–1238. arXiv:astro-ph/0605414. Bibcode:2006ApJ...648.1228M. doi:10.1086/505651.
3. Burke, Christopher J.; et al. (2007). "XO-2b: Transiting Hot Jupiter in a Metal-rich Common Proper Motion Binary". The Astrophysical Journal. 671 (2): 2115–2128. arXiv:0705.0003. Bibcode:2007ApJ...671.2115B. doi:10.1086/523087.
4. Johns-Krull, Christopher M.; et al. (2008). "XO-3b: A Massive Planet in an Eccentric Orbit Transiting an F5V Star". The Astrophysical Journal. 677 (1): 657–670. arXiv:0712.4283. Bibcode:2008ApJ...677..657J. doi:10.1086/528950.
5. McCullough, P. R.; et al. (2008). "XO-4b: An Extrasolar Planet Transiting an F5V Star". arXiv:0805.2921 .
6. Burke, Christopher J.; et al. (2008). "XO-5b: A Transiting Jupiter-sized Planet with a 4 day Period". The Astrophysical Journal. 686 (2): 1331–1340. arXiv:0805.2399. Bibcode:2008ApJ...686.1331B. doi:10.1086/591497.
7. Crouzet, N.; et al. (2017). "Discovery of XO-6b: A Hot Jupiter Transiting a Fast Rotating F5 Star on an Oblique Orbit". The Astronomical Journal. 153 (3). 94. arXiv:1612.02776. Bibcode:2017AJ....153...94C. doi:10.3847/1538-3881/153/3/94.{{cite journal}}: CS1 maint: unflagged free DOI (link)

External links

• The XO Project website
• Astronomers Catch Planet By Unusual Means (SpaceDaily) May 19, 2006

v t e Exoplanet search projects
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Ground-based	AAPS APF CORALIE EAPSNet ELODIE EPICS ESPRESSO FINDS Exo-Earths Geneva HARPS HARPS-N GPI HATNet HEK HiCIAO HIRES KELT LCES Magellan MARVELS MASCARA MEarth MicroFUN MINERVA Australis MOA N2K NGTS NESSI OGLE OPSP PlanetPol Project 1640 PARAS SEEDS SETI SOPHIE SPECULOOS SPHERE SuperWASP Systemic TrES XO Telescope ZIMPOL/CHEOPS
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