NGC 2298 / C0647-359
(Updated July 2012)

RA: 06:48:59.41  DEC: -36:00:19.1  (J2000)

============================================================
Bytes  Format      Explanation
1-8      A8        Star ID
10-32  A11,1x,A11  Position
34-35    A2        Units for position
                    R0 denotes RA, DEC in the J2000 coordinates
                    R5 denotes RA, DEC in the 1950 coordinates
                    XA denotes X, Y in arcseconds 
                    XP denotes X, Y in pixels
37-44   F8.4       Period  (days)
46-51   F6.3       Mean magnitude (or maximum magnitude if "max" 
                      is indicated in the remarks column)
53-57   F5.3       Light amplitude (range of variability)
59      A1         Colour for mean magnitude and amplitude
                    e.g.  B, V, R, I, J, K
                    or P (for photographic).
61-65   A5         Type of variable (draft 2006 GCVS classifications)
                      CST denotes non variable stars previously designated
                      as variables
67-80   A19        Notes and Remarks  (f denotes field star)
 
 "--" or "----" indicates no data available
=========================================================================
ID       Position                     Period <mag>  ampl  C Type  Notes/
         RA/X        Dec/Y     Units                              Remarks
=========================================================================
1        06:49:09.49 -36:00:57.4 R0   0.3712 16.46  0.66  B RR1   
2        06:48:56.74 -36:00:39.6 R0   0.6403 16.51  1.06  B RR0   
3        06:49:00.00 -35:59:55.2 R0   0.3664 16.58  0.56  B RR1   
4        06:48:58.49 -36:00:30.9 R0   0.4456 16.44  0.36  B RR1?   

===================================================================
Supplementary Notes 

The RA and dec for V1-4 are from Samus et al. (2009) and their period,
magnitudes, amplitudes and classification are from Clement et al.
(1995).

This cluster is currently undergoing disruption. De Marchi & Pulone
(2007) found a deficiency of low-mass stars and estimated that the 
cluster has lost 85% of its original mass.  Balbinot et al. (2011) 
have detected several extra-tidal features, including a leading and 
trailing tail around NGC 2298.  
====================================================================
Discovery of the variable stars in NGC 2298:

V1-2
   Fourcade et al. (1966) with x,y coordinates and an ID chart

V3
   Liller (1976) with ID chart for V1-3

V4
   Clement et al. (1995) with x,y, coordinates and ID chart for V1-4
   The x,y coordinates were derived relative to the cluster centre
   established by Janes & Heasley (1988) and the coordinates for V1 and
   V2 were converted to this system.
----------------------------------------------------------------------
In her first two catalogues, Sawyer (1939, 1955) indicated that there
were "6 unpublished variables, 5 suspected" according to a letter she
received from Shapley, but no further information was given.
--------------------------------------------------------------------
Lynch & Ransom (2011) conducted a search for pulsars, but did not find
any in NGC 2298.
==================================================================== 
References 

Balbinot, E., Santiago, B. X., da Costa, L. N., Makler, M., Maia, M. A.
G. 2011, MNRAS, 416, 393

Clement, C. M., Bezaire, J., Giguere, D. 1995, AJ, 110, 2200

de Marchi, G., Pulone, L. 2007, A&A, 467, 107

Fourcade, C. R., Laborde, J. R., Albarracin, J. 1966, Atlas y Catalogue
de Estrellas Variables en Cumulos Globulares al sur de -29 degrees, Cordoba

Janes, K. A. & Heasley, J. N. 1988, AJ, 95, 762

Liller, M. H.  1976, AJ, 81, 832 

Lynch, R. S. & Ransom, S. M. 2011, ApJ, 730, L11

Sawyer, H. B. 1939,  Publ. DDO, 1, No. 4

Sawyer, H. B. 1955,  Publ. DDO, 2, No. 2 

=====================================================================