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Cl Collinder 89 (4,149 of 18,816)

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9-12 Geminorum Cluster

Cl Collinder 89, C 0615+236, Ocl 473.0, COCD 93, 9-12 Geminorum Cluster

RA: 06h 18m 0s
Dec: +23° 38′ 0″

Con: Gemini
Ch: MSA:156, U2:137, SA:5

Ref: SIMBAD, DAML02, Archinal&Hynes (2003)

(reference key)

Type: open cluster, 42pn

Mag: B=?, V=5.7

Size: 60′
PA: ?

Published comments

Doig, P. (1926)

"A Catalogue of Estimated Parallaxes of 112 Nebulae, Open clusters and Star Groups", Vol 36 (4), p 107-115.

Calls it only a cluster "in Gemini" and notes that it is about 1 degree in diameter; "corse cluster containing 10, 11 and 12 Geminorum."

Contemporary observations

Richard Ford

2013 February 7th, Thursday

Location:Blesfontein Guest Farm,Sutherland.

Time:12:50am.

Sky Conditions:The most crystal clear sky possible.Dark moon and stars magnitude 6 and fainter are visible with the naked eye.Excellent clean sky,limited star flickering and brilliant objects.

Instrument:12-inch Dobsonian.

This open cluster is an equally large cluster that I have found that it consists of 15 stars arranged in an WNW and ESE in a semicircle of 9th to 10th magnitude stars.This open cluster is not at all concentrated and that the stars in this cluster have bright and faint stars mixed together.This open cluster measures 19.5'x 16.2'with P.A:WNW/ESE.Chart No.207,NSOG Vol.2.

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