XO-3
Sign in to saveAlso known as BD+57 793
XO-3 is a star away in the constellation Camelopardalis. The star has a magnitude of 10 and is not visible to the naked eye but is visible through a small telescope. A search for a binary companion star using adaptive optics at the MMT Observatory was negative.
Wikidata facts
- Constellation
- Camelopardalis
- Child body
- XO-3b
- Distance from Earth
- 260
- Diameter
- 1990000
- Radius
- 1.49
- Mass
- 1.41
Show 16 more facts
- catalog code
- BD+57 793
- effective temperature
- 6781
- parallax
- 4.8687
- radial velocity
- -15.36
- apparent magnitude
- 9.74296
- stellar rotational velocity
- 20.3
- epoch
- J2000.0
- spectral class
- F5V
- metallicity
- -0.106
- surface gravity
- 13270
- luminosity
- 4.267456
- right ascension component of proper motion
- -2.721
- declination component of proper motion
- 4.186
- right ascension
- 65.46960339847
- declination
- 57.81719147081999
- age estimated by a dating method
- 2.82
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Encyclopedic overview
3 sectionsContents
- Planetary system
- References
- Further reading
XO-3 is a star away in the constellation Camelopardalis. The star has a magnitude of 10 and is not visible to the naked eye but is visible through a small telescope. A search for a binary companion star using adaptive optics at the MMT Observatory was negative.
==Planetary system== In 2007, the gas giant exoplanet XO-3b was discovered by the XO Telescope using the transit method. This object may be classified as a brown dwarf because of its high mass, near the limit for deuterium fusion. The planetary orbit is misaligned with the stellar rotation, which is unusual for such a massive planet. The misalignment may be due to an undetected companion star.
Excerpted from Wikipedia’s “XO-3” article, available under the CC BY-SA 4.0 licence.