Hämarik
Sign in to saveAlso known as XO-4b, TOI-1721b, TOI-1721.01, TIC 51234631b
XO-4b is an extrasolar planet approximately 956 light years away in the constellation of Lynx. This planet was found by the transit method by McCullough in May 2008. The planet has mass and radius . This planet orbits very close to the F-type parent star, as it is typical for transiting planets, classing this planet as Hot Jupiter.
Astronomical data · SIMBAD
- Object type
- Pl
- Distance
- 863 light-years
- Coordinates
- RA 110.3882° · Dec 58.2681°
via SIMBAD · CDS Strasbourg
Key facts
- Planet.name
- XO-4b Hämarik
- Planet.image
- Exoplanet Comparison XO-4 b.png
- Planet.caption
- Size comparison of XO-4b with Jupiter.
- Planet.discoverer
- McCullough et al.
- Planet.discovery_site
- Maui, Hawaii
- Planet.discovered
- May 19, 2008
- Planet.discovery_method
- Transit
- Planet.apsis
- astron
- Planet.eccentricity
- 0.0024
- Planet.period
- 4.12502 ± 2e-5 d0.011293 y
- Planet.inclination
- 88.7 ± 1.1
- Planet.star
- XO-4
- Planet.mean_radius
- 1.34 ± 0.048
- Planet.mass
- 1.72 ± 0.2
- Planet.single_temperature
- ~1333
via Wikipedia infobox
Wikidata facts
- Radius
- 1.317
- Mass
- 1.616
- Orbital period
- 4.12473
- Image
- Exoplanet Comparison XO-4 b.png
Show 16 more facts
- catalog code
- TOI-1721b
- Commons category
- XO-4 b
- time of discovery or invention
- 2010-11-00
- right ascension
- 110.38816754588707
- declination
- 58.26808658469027
- name
- Hämarik
- orbital eccentricity
- 0.002
- semi-major axis of an orbit
- 0.05485
- orbital inclination
- 88.47
- angular distance
- 0.000189
- temperature
- 1641.0
- right ascension component of proper motion
- -16.989
- declination component of proper motion
- 5.310
- parallax
- 3.6392
- argument of periapsis
- 240
- M sin i
- 1.615
via Wikidata · CC0
~1 min read
Article
5 sectionsContents
- Orbit
- Naming
- See also
- References
- External links
XO-4b is an extrasolar planet approximately 956 light years away in the constellation of Lynx. This planet was found by the transit method by McCullough in May 2008. The planet has mass and radius . This planet orbits very close to the F-type parent star, as it is typical for transiting planets, classing this planet as Hot Jupiter.
==Orbit== It takes only 4.125 days (or 99 hours) to orbit at a distance of 8.3 gigameters (0.0555 AU) away from the star.