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EntityQ2660968· pop 10· linked from 86 articles

XO-4 is a star located approximately 863 light-years away from Earth in the Lynx constellation. It has a magnitude of about 11 and cannot be seen with the naked eye but is visible through a small telescope. A search for a binary companion star using adaptive optics at MMT Observatory was negative.

Astronomical data · SIMBAD

Object type
Em*
Spectral type
F5
Distance
863 light-years
Redshift
z = 0.000004312993051813763
Coordinates
RA 110.3882° · Dec 58.2681°
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Wikidata facts

Distance from Earth
293
Radius
1.55
Mass
1.32
Show 16 more facts
catalog code
TIC 51234631
effective temperature
5700
spectral class
F5
metallicity
0
radial velocity
-3.18
apparent magnitude
10.515098
parallax
3.7812
stellar rotational velocity
8.8
surface gravity
62000
name
Koit
luminosity
3.4322722
right ascension component of proper motion
-17.008
declination component of proper motion
5.463
right ascension
110.38816768115
declination
58.26808598149002
age estimated by a dating method
2.1
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Article

4 sections
Contents
  • Planetary system
  • Notes
  • References
  • External links

XO-4 is a star located approximately 863 light-years away from Earth in the Lynx constellation. It has a magnitude of about 11 and cannot be seen with the naked eye but is visible through a small telescope. A search for a binary companion star using adaptive optics at MMT Observatory was negative.

The star XO-4 is named Koit. The name was selected in the NameExoWorlds campaign by Estonia, during the 100th anniversary of the IAU. Koit is Estonian for dawn, and was named for a character in a folk tale written by Friedrich Robert Faehlmann.

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