[vsnet-alert 4127] U Gem increased activity

[Taichi Kato <tkato>]

U Gem increased activity

   Several observers have notified that the eclipsing SS Cyg-type dwarf nova
U Gem may be brightening.  Such an increased activity may be a precursor
to the coming outburst.  CCD and photoelectric observers (esp. those
who are not engaged in RX J0459.7+1926) are strongly urged to monitor
this object, around its predicted eclipses (coverages of +/-30 min are
desirable), since time-resolved observations of eclipses during the
rising stage to an outburst can provide extremely important imformation on
the outburst mechanism.  Please keep a closer eye on U Gem.

  YYYYMMDD(UT)   mag  observer
  20000128.253   141  (M. Simonsen)
  20000128.557  <133  (H. Maehara)
  20000129.110   144  (G. Hanson)
  20000129.176  <145  (M. Simonsen)
  20000129.803   144  (G. Comello)
  20000129.916   143  (J. Ripero)
  20000130.505  <123  (H. Someya)
  20000130.769  <138  (E. Muyllaert)
  20000201.587  <122  (M. Nakatani)
  20000202.117   144  (G. Hanson)
  20000202.833   144  (R. J. Bouma)
  20000202.835  <138  (E. Muyllaert)
  20000202.894   143  (G. Comello)
  20000202.897   140  (H. Hautecler)
  20000203.110   148  (G. Hanson)
  20000203.114  <130  (J. Garcia)
  20000203.880  <138  (T. Kinnunen)
  20000203.951   143  (J. Ripero)
  20000204.013  <130  (J. Garcia)
  20000204.685  <119  (H. Someya)
  20000205.256  <138  (M. Simonsen)
  20000205.577   138  (P. Nelson)
  20000205.880   141  (T. Kinnunen)
  20000206.285   137  (M. Simonsen)
  20000206.292   138  (M. Simonsen)
  20000206.301   139  (M. Simonsen)

  YYYYMMDD hh:mm:ss (UT, geocentric)
 ------------------------------------
  20000205 01:25:31
  20000205 05:40:16
  20000205 09:55:01
  20000205 14:09:46
  20000205 18:24:32
  20000205 22:39:17

  20000206 02:54:02
  20000206 07:08:47
  20000206 11:23:33
  20000206 15:38:18
  20000206 19:53:03

  20000207 00:07:48
  20000207 04:22:34
  20000207 08:37:19
  20000207 12:52:04
  20000207 17:06:49
  20000207 21:21:35

  20000208 01:36:20
  20000208 05:51:05
  20000208 10:05:51
  20000208 14:20:36
  20000208 18:35:21
  20000208 22:50:06

  20000209 03:04:52
  20000209 07:19:37
  20000209 11:34:22
  20000209 15:49:08
  20000209 20:03:53

  20000210 00:18:38
  20000210 04:33:24
  20000210 08:48:09
  20000210 13:02:54
  20000210 17:17:40
  20000210 21:32:25

  20000211 01:47:10
  20000211 06:01:56
  20000211 10:16:41
  20000211 14:31:26
  20000211 18:46:12
  20000211 23:00:57

  20000212 03:15:42
  20000212 07:30:28
  20000212 11:45:13
  20000212 15:59:59
  20000212 20:14:44

  20000213 00:29:29
  20000213 04:44:15
  20000213 08:59:00
  20000213 13:13:46
  20000213 17:28:31
  20000213 21:43:16

VSNET Home Page

Return to Daisaku Nogami

---

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