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{{extrasolar-planet-stub}} {{extrasolar-planet-stub}}
{{observatory-stub}} {{telescope-stub}}

Revision as of 19:23, 28 July 2023

Astronomical telescope on the summit of Haleakala on the island of Maui

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.

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-2N Lynx 07 48 07 +50° 13′ 33″ 11.25 486 K0V XO-2Nb 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
XO-6 Camelopardalis 6 19 10.31 +73° 49′ 39.24″ 10.28 760 F5V XO-6b 4.4 2.07 3.76 0.082 0 86.0 2016
XO-7 Draco 18 29 52.30 85° 13′ 59.58″ 10.52 763 G0V XO-7b 0.71 1.373 2.8641424 0.04421 0.038 83.45 2019

See also

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

Other Ground-Based Transit Surveys

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. S2CID 16972795.
  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. S2CID 8100425.
  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. S2CID 13468914.
  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. S2CID 15342571.
  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. S2CID 14043772.
  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. S2CID 119082666.{{cite journal}}: CS1 maint: unflagged free DOI (link)

External links

Exoplanet search projects
Ground-based

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