Observation by Ian Rothwell: M3

Uploaded by

Ian Rothwell

Observer

Ian Rothwell

Observed

2018 Feb 25 - 03:22

Uploaded

2018 Feb 25 - 17:29

Objects

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Constellation

Canes Venatici

Field centre

RA: 13^h42^m
Dec: +28°22'
Position angle: -5°30'

Field size

0°48' × 0°33'

Title

About this image

Messier 3 is a globular cluster of stars in the northern constellation of Canes Venatici. It was discovered by Charles Messier on May 3, 1764, and resolved into stars by William Herschel around 1784.

Observation data (J2000 epoch)

Constellation: Canes Venatici

Right ascension: 13h 42m 11.62s

Declination: +28° 22′ 38.2″

Distance: 33.9 kly (10.4 kpc)

Apparent magnitude (V): +6.2

Apparent dimensions (V): 18′.0

Physical characteristics

Mass: 4.5×105M☉

Radius: 90 ly

Other designations: NGC 5272[4]

Files associated with this observation

M3_proc_neb_s.jpg (1.9 MB)

Like this image

Mr Michael Alan Frost, Peter Carson, David Swan

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