Exoplanet XO-3b Illustration · NASA · NASA — public domain
XO-3b
Sign in to saveAlso known as BD+57 793b, TOI-1676b, TOI-1676.01, TIC 8400842b
XO-3b is an exoplanet with about 11.79 times the mass of Jupiter, and it orbits its parent star XO-3 in about 3.2 days. The radius of this object is 1.217 times that of Jupiter. Astronomers announced their discovery on May 30, 2007, at the American Astronomical Society in Honolulu, Hawaii. Its discovery is attributed to the combined effort of amateur and professional astronomers working together on the XO Project using a telescope located on the Haleakala summit in Hawaii.
Astronomical data · SIMBAD
- Object type
- Pl
- Distance
- 670 light-years
- Coordinates
- RA 65.4696° · Dec 57.8172°
via SIMBAD · CDS Strasbourg
Key facts
- Planet.name
- XO-3b
- Planet.image
- Exoplanet Comparison XO-3 b.png
- Planet.caption
- Size comparison of XO-3b with Jupiter.
- Planet.discoverer
- XO Project
- Planet.discovery_site
- XO telescope Maui, Hawaii
- Planet.discovered
- May 30, 2007
- Planet.discovery_method
- Transit,Radial velocity
- Planet.apsis
- astron
- Planet.eccentricity
- 0.2883 ± 0.0025
- Planet.period
- 3.1915289 ± 0.0000032 d
- Planet.inclination
- 84.20 ± 0.54
- Planet.arg_peri
- 346.1
- Planet.semi amplitude
- 1494.0 ± 9.5
- Planet.star
- XO-3
- Planet.mean_radius
- 1.217 ± 0.073
- Planet.mass
- 11.79 ± 0.59
- Planet.albedo
- 0.106
- Planet.single_temperature
- 1400-2000 K
via Wikipedia infobox
Wikidata facts
- Radius
- 1.248
- Mass
- 11.79
- Orbital period
- 3.1915239
- Image
- XO-3b.jpg
Show 15 more facts
- Commons category
- XO-3 b
- catalog code
- TIC 8400842b
- time of discovery or invention
- 2008-04-00
- right ascension
- 65.46960173768040
- declination
- 57.81719224278111
- orbital inclination
- 83.89
- argument of periapsis
- 345.8
- semi-major axis of an orbit
- 0.0454
- orbital eccentricity
- 0.27587
- angular distance
- 0.000175
- right ascension component of proper motion
- -2.516
- declination component of proper motion
- 4.003
- parallax
- 4.6660
- M sin i
- 13.02
- time of periapsis
- 2454024.84
Sources (1)
via Wikidata · CC0
~3 min read
Article
6 sectionsContents
- Planetary orbit
- Atmosphere
- Debate
- See also
- References
- External links
XO-3b is an exoplanet with about 11.79 times the mass of Jupiter, and it orbits its parent star XO-3 in about 3.2 days. The radius of this object is 1.217 times that of Jupiter. Astronomers announced their discovery on May 30, 2007, at the American Astronomical Society in Honolulu, Hawaii. Its discovery is attributed to the combined effort of amateur and professional astronomers working together on the XO Project using a telescope located on the Haleakala summit in Hawaii.
Dubbed an "oddball" planet, at the time of its discovery the planet was the most massive planet found in close proximity to a star, yet the orbit is significantly elliptical instead of circular, as would be expected. It is also considered a transiting planet, passing in front of its parent star during each orbit. It is the third such planet to be found by the XO Project which was specifically created to locate them.