Geminga

Geminga
	; Geminga as seen by Chandra and Spitzer; Credit: X-ray: NASA/CXC/PSU/B. Posselt et al; Infrared: NASA/JPL–Caltech
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Gemini
Right ascension	06h 33m 54.15s
Declination	+17° 46′ 12.9″
Apparent magnitude (V)	25.5
Characteristics
Evolutionary stage	Pulsar
Astrometry
Distance	815 ly ; (250+120; −62 pc)
Details
Age	342,000 years
Other designations
	SN 437, PSR B0633+17, PSR J0633+1746
Database references
SIMBAD	data

Geminga /ɡəˈmɪŋɡə/ is a gamma ray and x-ray pulsar source thought to be a neutron star approximately 250 parsecs (around 800 light-years) from the Sun in the constellation Gemini.

Its name, attributed by its discoverer Giovanni Bignami, is both a contraction of Gemini gamma-ray source, and a transcription of the words ghè minga (pronounced [ɡɛ ˈmĩːɡa]), meaning "it's not there" in the Milanese dialect of Lombard. The name was approved by the International Astronomic Union on 4 April 2022.

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