Release 11.12 ("Hergest Ridge")


Selected: NGC 7089

New Search:
Parameters
Positional Parameters
clusterNGC 7089
nameM 2
RA21 33 27.02
Declination-00 49 23.7
Galactic longitude53.37
Galactic latitude-35.77
R sun11.5
R gc10.4
X5.6
Y7.5
Z-6.7
Photometric Parameters
E (B-V)0.06
V HB16.05
(m-M)15.5
Vt6.47
MVt-9.03
(U-B)0.09
(B-V)0.66
(V-R)0.46
(V-I)0.92
S_RR7.1
HBR0.96
hbt1
Structural Parameters
[Fe / H]-1.65
SpT F4
v_r-5.3
err2
v_LSR3.8
c1.59
r_c0.32
r_h1.06
r_t21.45
lg(tc)8.48
lg(th)9.4
mu_V15.78
rho_v4
Color-magnitude diagrams
authorLee, Jae-Woo; Carney, Bruce W.
titleBV Photometry of RR Lyrae Variables in the Globular Cluster M2 (NGC 7089)
journalThe Astronomical Journal, 1999, Volume 117, Issue 6, pp. 2868-2881
CM diagram
Description of NGC 7089

M2 is, under extremely good conditions, just visible to the naked eye five degrees north of the star Beta Aquarii. Binoculars or small telescopes will identify this cluster as non-stellar while larger telescopes will resolve individual stars, of which the brightest are of apparent magnitude 13.1.

M2 was discovered by the French astronomer Jean-Dominique Maraldi in 1746 when he was observing a comet with Jacques Cassini. Charles Messier rediscovered it in 1760 and thought it a nebula without any stars associated with it. William Herschel was the first to resolve individual stars in the cluster in 1794.

Source: Wikipedia | Notify inaccuracies

Image

Image of the cluster from the Digital Sky Survey

Other Resources
for NGC 7089
ADS "Object Search"
SEDS data
Web Links for this cluster
(0 links in the database at the moment)
Users comments for this cluster
(0 comments in the database at the moment)
Selected biblio
Paper n. 1
Lardo, C.; Mucciarelli, A.; Bastian, N.
The iron dispersion of the globular cluster M2, revised
2016, MNRAS, Volume 457, Issue 1, p.51-63
(NGC 7089 )
Paper n. 2
Lee, Jae-Woo; Carney, Bruce W.
BV Photometry of RR Lyrae Variables in the Globular Cluster M2 (NGC 7089)
1999, The Astronomical Journal, 1999, Volume 117, Issue 6, pp. 2868-2881
(NGC 7089 cmd )
Paper n. 3
Auriere, M.; Cordoni, J.P.
The color-magnitude diagram for stars in the central part of the globular cluster NGC 7089 (M2)
1983, Astronomy and Astrophysics Supplement Series, vol. 51, Jan. 1983, p. 135-142
(NGC 7089 )
See all items (3 papers) :: Submit a paper
Listen to the sound of this cluster (info)

Tutor(s) for this cluster:
Matteo Monelli

(See how to adopt a cluster)

Query processed at 07:28, 26th September
This page has been visited 15188 times, since Oct 25 2004

Page updated: 2005-05-26



Top of the page

Home | Parameters | Table 1 | Table 2 | Table 3
Search | Feedback | What's new | Links | Blog