Your query: M 72

Parameters
Positional Parameters
cluster	NGC 6981
name	M 72
RA	20 53 27.
Declination	-12 32 13
Galactic longitude	35.16
Galactic latitude	-32.68
R sun	17
R gc	12.9
X	11.7
Y	8.3
Z	-9.2
Photometric Parameters
E (B-V)	0.05
V HB	16.9
(m-M)	16.31
Vt	9.27
MVt	-7.04
(U-B)	0.14
(B-V)	0.72
(V-R)	0.45
(V-I)	0.94
S_RR	38.2
HBR	0.14
hbt	4
Structural Parameters
[Fe / H]	-1.4
SpT	F7
v_r	-345.1
err	3.7
v_LSR	-334.7
c	1.23
r_c	0.54
r_h	0.88
r_t	9.15
lg(tc)	8.93
lg(th)	9.2
mu_V	18.9
rho_v	2.35
Color-magnitude diagrams
author	Dickens, R. J.
title	The colour-magnitude diagram of the globular cluster NGC 6981
journal	Mon. Not. R. Astr. Soc. 157, 281
CM diagram

Description of NGC 6981
Messier 72 (also known as M72 or NGC 6981) is a globular cluster in the Aquarius constellation discovered by Pierre Mechain in August 29, 1780. Charles Messier looked for it on the following October 4 and 5, and included it in his catalog. Both decided that it was a faint nebula not a cluster as is now believed. Source: Wikipedia \| Notify inaccuracies
DSS image
Image of the cluster from the Digital Sky Survey
Other Resources for NGC 6981

ADS "Object Search"
SEDS data

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Selected biblio
Paper n. 1
Dickens, R. J. The colour-magnitude diagram of the globular cluster NGC 6981 Mon. Not. R. Astr. Soc. 157, 281 (NGC 6981 cmd )
*See all items (1 paper)*

Query processed at 21:38, 9th February
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