[vsnet-sequence 80] SN2001bg sequence

["Bruce Sumner" <b.sumner@bom.gov.au>]

Here is a sequence for SN 2001bg based on Arne's single-night 
field photometry [vsnet-chat 4472]. This sequence revises the 
sequence shown on the preliminary AAVSO (e) scale chart for 
this object.
Bruce Sumner
---------------------------
222  SN 2001bg 2001   (Ia)   Range: 14-<19p
     Position:   08 35 18.82  +28 28 05.5  (J2000, from .dat file)
     Magnitude:  V=14.369  B-V=0.533       (Henden, single night)

ID     RA  (2000)   DEC       X    Y  N    V      ERR    B-V    ERR 

1   08 35 08.3  +28 23 52  -138 -254  1  11.828  0.000   0.345  0.000 
2   08 35 38.9  +28 28 26   266   20  1  13.269  0.001   0.858  0.001 
3   08 34 57.7  +28 32 25  -278  259  1  14.037  0.002   0.767  0.003 
4   08 35 09.9  +28 27 00  -118  -66  1  14.567  0.002   0.798  0.004 
5   08 35 14.0  +28 25 20   -64 -166  1  14.695  0.002   1.104  0.004 
6   08 35 04.4  +28 32 20  -190  254  1  15.216  0.004   0.652  0.006 
7   08 35 31.9  +28 28 34   173   28  1  15.507  0.004   0.648  0.006 
8   08 35 17.0  +28 32 15   -24  249  1  15.734  0.005   0.578  0.008 
9   08 35 13.3  +28 27 31   -73  -35  1  16.046  0.007   1.043  0.013 
10  08 35 15.9  +28 26 57   -38  -69  1  16.622  0.011   0.945  0.020 
11  08 35 17.8  +28 31 16   -14  190  1  17.419  0.023   1.216  0.050 
12  08 35 21.8  +28 29 26    40   80  1  18.062  0.040   1.741  0.130 

Notes:

1. There is an preliminary AAVSO (e) scale chart dated May 2001 that
includes a sequence derived from USNO-A2.0 data. The common stars 
are:

          ID      Henden      AAVSO
                 V      B-V   
          2    13.269  0.858   133
          3    14.037  0.767   142
          5    14.695  1.104   147
          6    15.216  0.652   151
          7    15.507  0.648   153 

2. This sequence is based on photometry obtained on a single night, 
and the errors are expected to be +/-0.02 magnitude.
                    
Bruce Sumner
24 May 2001

VSNET Home Page

---

vsnet-adm@kusastro.kyoto-u.ac.jp