[vsnet-alert 4581] V893 Sco outburst and eclipse ephemeris

[Taichi Kato <tkato>]

V893 Sco outburst and eclipse ephemeris

    The (grazing) eclipsing dwarf nova below the period gap is in outburst,
as indicated by the following observations.  The present outburst is the
first one in this season, and is one of relatively bright ones recorded
recently.  (Southern) observers are strongly urged to obtain time-resolved
photometry of this object.  The object had long been lost, and was
recovered by K. Haseda (vsnet-alert 1543, 1545, 1565, 1637, 1647; summarized
in IBVS 4585).  The spectroscopic confirmation (vsnet-alert 1688), which
finally led to the discovery of the eclipsing nature (vsnet-alert 3432).
Other useful information in IBVS 4749 (Thorstensen) and PASP 112, 237
(Bruch et al.)

  YYYYMMDD(UT)   mag  observer
  20000329.549   139  (R. Stubbings)
  20000329.806   141  (A. Pearce)
  20000330.749   141  (R. Stubbings)
  20000331.087   140  (B. Monard)
  20000401.740   140  (R. Stubbings)
  20000402.755   139  (R. Stubbings)
  20000406.574   139  (R. Stubbings)
  20000406.998   126  (B. Monard)

  Eclipse ephemeris (accuracy = several min)

  YYYYMMDD hh:mm:ss (UT, geocentric)
 -------------------------------------
  20000406 00:25:41
  20000406 02:15:04
  20000406 04:04:26
  20000406 05:53:49
  20000406 07:43:12
  20000406 09:32:34
  20000406 11:21:57
  20000406 13:11:19
  20000406 15:00:42
  20000406 16:50:05
  20000406 18:39:27
  20000406 20:28:50
  20000406 22:18:12

  20000407 00:07:35
  20000407 01:56:58
  20000407 03:46:20
  20000407 05:35:43
  20000407 07:25:05
  20000407 09:14:28
  20000407 11:03:51
  20000407 12:53:13
  20000407 14:42:36
  20000407 16:31:58
  20000407 18:21:21
  20000407 20:10:44
  20000407 22:00:06
  20000407 23:49:29

  20000408 01:38:52
  20000408 03:28:14
  20000408 05:17:37
  20000408 07:06:59
  20000408 08:56:22
  20000408 10:45:45
  20000408 12:35:07
  20000408 14:24:30
  20000408 16:13:52
  20000408 18:03:15
  20000408 19:52:38
  20000408 21:42:00
  20000408 23:31:23

  20000409 01:20:46
  20000409 03:10:08
  20000409 04:59:31
  20000409 06:48:53
  20000409 08:38:16
  20000409 10:27:39
  20000409 12:17:01
  20000409 14:06:24
  20000409 15:55:47
  20000409 17:45:09
  20000409 19:34:32
  20000409 21:23:54
  20000409 23:13:17

  20000410 01:02:40
  20000410 02:52:02
  20000410 04:41:25
  20000410 06:30:48
  20000410 08:20:10
  20000410 10:09:33
  20000410 11:58:55
  20000410 13:48:18
  20000410 15:37:41
  20000410 17:27:03
  20000410 19:16:26
  20000410 21:05:49
  20000410 22:55:11

  20000411 00:44:34
  20000411 02:33:56
  20000411 04:23:19
  20000411 06:12:42
  20000411 08:02:04
  20000411 09:51:27
  20000411 11:40:50
  20000411 13:30:12
  20000411 15:19:35
  20000411 17:08:58
  20000411 18:58:20
  20000411 20:47:43
  20000411 22:37:06

  20000412 00:26:28
  20000412 02:15:51
  20000412 04:05:13
  20000412 05:54:36
  20000412 07:43:59
  20000412 09:33:21
  20000412 11:22:44
  20000412 13:12:07
  20000412 15:01:29
  20000412 16:50:52
  20000412 18:40:15
  20000412 20:29:37
  20000412 22:19:00

  20000413 00:08:23
  20000413 01:57:45
  20000413 03:47:08
  20000413 05:36:31
  20000413 07:25:53
  20000413 09:15:16
  20000413 11:04:38
  20000413 12:54:01
  20000413 14:43:24
  20000413 16:32:46
  20000413 18:22:09
  20000413 20:11:32
  20000413 22:00:54
  20000413 23:50:17

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