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NGC 5694

Globular cluster in the constellation Hydra

Field	Value
name	NGC 5694
image	[[Image:NGC 5694.jpg	250px]]
caption	The core of NGC 5694 imaged by the Hubble Space Telescope
epoch	J2000
class	VII
constellation	Hydra
ra	{{cite simbad
title	NGC 5694
access-date	2010-12-07}}
dec
dist_ly	114,100ly
appmag_v	10.2{{cite web
work	SEDS NGC Catalog Online
title	Results for NGC 5694
url	http://spider.seds.org/ngc/ngc.cgi?N5694
access-date	2010-12-07}}
size_v	3.6
metal_fe	–1.74
age	13.44 Gyr
names	Caldwell 66

| access-date=2010-12-07}} | access-date = 2010-12-07}} NGC 5694 (also known as Caldwell 66) is a globular cluster in the constellation Hydra. It was discovered by German-British astronomer William Herschel on 22 May 1784.

Characteristics

This globular cluster is located at a distance of 114000 ly from the Sun and 96000 ly from the Galactic Center and is one of the oldest known globular clusters in the Milky Way Galaxy, forming nearly 12 billion years ago.{{cite web |access-date = 2010-12-07 |url-status = dead |archive-url = https://web.archive.org/web/20120520010558/http://www.ngcicproject.org/ngcicdb.asp |archive-date = 2012-05-20

Its chemical composition is highly peculiar, being highly (to nearly solar levels) enriched in alpha elements, suggesting an extragalactic origin before being captured by the Milky Way.

Noctua

NGC 5694 is located below the tail of the former constellation Noctua, which included faint stars within the modern IAU borders of Libra, Hydra, and Virgo.

References

Sky and Telescope June Issue, pg.66

References

Harris, W.E.. (1996). "A Catalog of Parameters for Globular Clusters in the Milky Way". The Astronomical Journal.
(2013). "NGC 5694: Another foster son of the Galactic halo★". Monthly Notices of the Royal Astronomical Society.
(May 2010). "Accreted versus in situ Milky Way globular clusters". [[Monthly Notices of the Royal Astronomical Society]].
Seligman, Courtney. "New General Catalogue Objects: NGC 5694".

Info: Wikipedia Source

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globular-clusters hydra-(constellation) ngc-objects caldwell-objects astronomical-objects-discovered-in-1784

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