Nova Mus 1998

(vsnet-alert 2488)

Possible Nova Mus 1998

According to IAUC No. 7078, W. Liller (Vina del Mar, Chile) reports the discovery of a possible nova on Technical Pan photographs. 

   Nova? Mus 1998

   11h 56m.2  (J2000.0)
    -65o 34'

 1998 Dec 20      <11.5r (W. Liller)
          29.3090   8.5r (Liller)
          29.3123    "
          30.1465   9.45V (Liller)
          30.80    10.0mv (A. Pearce)

Conguratulations to W. Liller on his latest discovery! When reporting to vsnet-obs, please use the provisional designation Nova Mus 1998 (or MUSnova1998 in the VSNET format).

Regards,
Taichi Kato

Confirmation as a nova

(vsnet-alert 2491)

Nova Mus 1998

The reported possible Nova Mus hass been confirmed spectroscopically to be a genuine nova (IAUC 7079). The astrometry by W. Liller: 

   11h 56m 08s.9    (J2000.0)
   -65o 34' 20".6
The closest USNO star (slightly outside the error circle given by Liller)

USNO-A1.0_0225.12804230 115609.404 -653420.33 (2000.0) 18.1 20.6

Regards,
Taichi Kato

Sequence

(vsnet-alert 2484)

Hi all,

I note that Bill Liller's latest discovery lies not far from GSPC sequence S094. I have converted the coordinates to J2000, and added a couple of Hipparcos stars. These mags would appear to be the most reliable. The list follows. 

Name       J2000                V     B-V
===========================================
S094A   11h54m41.9s  -65o13'07"  8.50 0.30
S094B   11 52 46.8   -65 16 20  10.41 0.30
S094C   11 55 09.4   -65 13 59  11.34 0.64
S094D   11 54 05.9   -65 20 47  11.55 0.86
S094E   11 55 19.1   -65 13 39  11.90 1.32
S094F   11 54 48.5   -65 20 57  12.87 0.60
S094G   11 54 15.5   -65 19 12  13.93 0.76

.....   11 59 29.0   -65 23 41   8.90 0.37  HD 104145
.....   11 55 35.8   -65 55 50   9.40 0.54  HD 103602
Sorry, no observations possible at this site - heavy cloud cover.

Regards,
MOREL ASTROGRAPHICS, Stellar Data & Information Centre, c/o M. Morel

(vsnet-alert 2485)

In addition to the GSPC sequence, there are stars aropund the Cepheid UU Muscae in the same field from van den Bergh et al. 1983, ApJSuppl 53,765: 

Name                  RA  (2000)  Dec    s     GSC       V    B-V
UU Mus G           11 52 07.2  -65 24 34 A             14.56  0.65
UU Mus F           11 52 15.5  -65 22 57 A             13.82  0.59
UU Mus E           11 52 16.0  -65 24 57 A             13.72  0.68
UU Mus H           11 52 19.0  -65 24 42 A             14.98  0.68
\Brian

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