Sh2-310 / Gum 8 and NGC 2362 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 29 UW CMa · 30 CMa · 30 tau CMa · LBN 1060 · LDN 1664 · LDN 1667 · NGC 2362 · PGC 20564 · PGC 3098644 · PGC 76933 · PGC 76950 · PGC 76959 · PGC 76966 · PGC 76975 · PGC 76983 · PGC 77025 · PGC 77061 · PGC 77072 · PGC 77089 · PGC 77098 · PGC 77102 · PGC 77137 · PGC 77193 · PGC 77268 · PGC 77391 · PGC 77432 · PGC 77438 · PGC 77464 · PGC 77468 · PGC 86046 · And 2 more.

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Sh2-310 / Gum 8 and NGC 2362

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Sh2-310 / Gum 8 and NGC 2362

These two beautiful objects are located in the constellation of Canis Major at a declination of -25 degrees.

At left, Gum 8 (also known as Bran 23) is a dim hydrogen emission nebula with several extended dust pillars. It lies about 4500 light years away. The Bran Catalogue was established in the 1986 paper, “The Velocity Field of the Outer Galaxy in the Southern Hemisphere”, by Brand, Blitz & Wouterloot. It is a catalogue of mostly previously uncatalogued HII regions and reflection nebula very distant from our sun and in the southern hemisphere. The region also contains 2 dark LDN nebulae.

NGC 2362, at upper right, is an open star cluster of about 60 stars located 4400 light years away in the constellation of Canis Major. The cluster spans 2 arc-minutes, which at this distance corresponds to a diameter of 2.5 light years. I like this cluster because of the contrast in brightness between the bright star (Tau Canis Majoris, the namesake of the cluster and the only one to have evolved away from the main sequence), and the other still bright but relatively dimmer stars around it. It is estimated to be one of the youngest star clusters known.

Even though the 2 objects are relatively lose together in actual distance, I could find no data that suggests there are related. Odd, though, that the pillars of the nebula, and indeed the entire bright nebula front itself, point towards the star cluster.

RASA Images
Cloudy Nights

Faint Giants Catalog (Complete)
Gum Catalog (47/85)
HII-Dominated Nebulae
Sharpless Catalog (200/313)

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Status	Advanced success
Started	...
Astrometry.net job	7100404
PixInsight job	F18QSNQMUSFOH9AIIXM7F2TQ7J1Y6XD2
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h23m41s.73
RA (top/left)	07h30m55s.70
RA (top/right)	07h16m41s.11
RA (bottom/right)	07h16m19s.66
RA (bottom/left)	07h30m49s.78

Dec (center)	-25°27′38″.2
Dec (top/left)	-24°24′37″.3
Dec (top/right)	-24°20′08″.6
Dec (bottom/right)	-26°29′22″.1
Dec (bottom/left)	-26°33′56″.4

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Sh2-310 / Gum 8 and NGC 2362

Sh2-310 / Gum 8 and NGC 2362

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Sh2-310 / Gum 8 and NGC 2362

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