Messier 48

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Messier 48
M48a.jpg
Observation data (J2000 epoch)
Constellation Hydra
Right ascension 08h 13.7m
Declination -05° 45′
Distance 1.5 kly (460 Pc)
Apparent magnitude (V) 5.5
Apparent dimensions (V) 54.0′
Physical characteristics
Estimated age 300 million years[citation needed]
Other designations NGC 2548
See also: Open cluster, List of open clusters

Messier 48 (also known as M 48 or NGC 2548) is an open cluster in the Hydra constellation. It was discovered by Charles Messier in 1771.

There is actually no cluster in the position indicated by Messier. The value that he gave for the right ascension matches that of NGC 2548, however, his declination is off by five degrees.[1] Credit for discovery is sometimes given instead to Caroline Herschel in 1783.[1]

M48 is visible to the naked eye under good atmospheric conditions. Its age is estimated to amount 300 million years.

References[edit]

  1. ^ a b Houston, Walter Scott (2005). Deep-Sky Wonders. Sky Publishing Corporation. ISBN 1-931559-23-6. 

External links[edit]

Coordinates: Sky map 08h 13.7m 00s, −05° 45′ 00″