SU UMa-type

Alert Notice 343: Rare outburst of 2320-08 EG Aquarii

November 10, 2006

Object: 2320-08 EG AQUARII

Coordinates: R.A. = 23h 25m 19.17s Decl. = -08o 18' 18.9" (USNO-B1.0, 2000)
Other (2000) positions reported include:
23:25:19.20 -08:18:18.9 (P. Schmeer, measurement of Univ. Iowa image)
23:25:19.20 -08:18:19.2 (A. Imada)
23:25:19.21 -08:18:19.6 (Henden and Sumner)

Alert Notice 369: Outburst of AQ CMi

January 31, 2008: Rod Stubbings (Tetoora Road, Victoria, Australia) reports via VSNET (vsnet-alert 9869) that the rarely outbursting UGSU star AQ CMi is in outburst. Stubbings reports that AQ CMi was at m(vis) = 14.6 on JD 2454496.978 (2008 Jan 31 11:28 UT). It is unclear whether the current outburst is a normal outburst or a superoutburst. The last confirmed normal outburst occurred on February 28, 2000, and the last confirmed superoutburst occurred in March 1997, nearly 11 years ago.

Special Notice #371: BB Ari observations particularly crucial now

September 24, 2013: HST/COS is scheduled to observe the SU UMa-type variable BB Ari:

BB Ari  2013 September 27 03:01:26 through 06:29:37 UT

The HST scheduling team will likely make their final decision early on September 26, so your observations are essential NOW.

Special Notice #370: GZ Cet observations crucial now

September 11, 2013: HST/COS is scheduled to observe the WZ Sge-like SU UMa variable GZ Cet (SDSS J013701.06-091234.9) the day after tomorrow. Observations are scheduled for:

GZ Cet  2013 Sep. 13 12:24:02 through 19:06:54 UT

The scheduling team will likely make their final decision early TOMORROW (September 12), so your observations are essential NOW.

Special Notice #369: GZ Cet (SDSS J013701.06-091234.9) HST/COS obs next week

September 5, 2013: HST/COS is scheduled to observe the WZ Sge-like SU UMa variable GZ Cet (SDSS J013701.06-091234.9) next week. Observations are scheduled for:

GZ Cet  2013 Sep. 13 12:24:02 through 19:06:54 UT

Special Notice #362: OR And and AX For obs critical now

July 8, 2013: The VY Scl variable OR And continues in its low state, so it has been scheduled for HST/COS observations. Based on your observations, the HST/COS team will be making the final decision tomorrow morning (2013 July 9) whether to observe OR And on:

OR And 2013 July 10 11:47:01 through 15:56:12 UT

OR And is ~18V in its low state and ~14.5V in its high state.

Special Notice #361: CC Scl observations DATE REVISED

June 24, 2013: The date given in AAVSO Special Notice #360 for the HST/COS  observations of the SU UMa-type dwarf nova CC Scl has been REVISED from June 27 to:

CC Scl   2013 Jun 29 03:19:13 through 05:54:10 UT

The HST team will be making a final decision early on June 28 about observing CC Scl based substantially on your observations, so they are essential.
 

Special Notice #360: CC Scl observations critical this week

June 24, 2013: HST/COS is scheduled to observe the SU UMa-type dwarf nova CC Scl:

CC Scl   2013 June 27 02:12:04 through 05:39:30 UT

The HST team will be making a final decision early on June 26 about observing CC Scl based substantially on your observations, so they are essential.