[vsnet-alert 2050] Z Cha: eclipse ephemeris

[Taichi Kato <tkato>]

Z Cha: eclipse ephemeris

  Barycentric corrections have been applied.  Note the time is in TT, not
in UTC.

1) Robinson et al. (1995) ApJ 443, 295
  quadratic ephemeris

  BJDD = 2440264.68213 + 0.0744992575*E + 0.000000000000377*E^2

  YYMMDD hh:mm:ss (Geocentric TT)
  980819 00:12:58
  980819 02:00:15
  980819 03:47:32
  980819 05:34:49
  980819 07:22:06
  980819 09:09:22
  980819 10:56:39
  980819 12:43:56
  980819 14:31:13
  980819 16:18:30
  980819 18:05:47
  980819 19:53:04
  980819 21:40:21
  980819 23:27:38

  980820 01:14:54
  980820 03:02:11
  980820 04:49:28
  980820 06:36:45
  980820 08:24:02
  980820 10:11:19
  980820 11:58:36
  980820 13:45:53
  980820 15:33:10
  980820 17:20:27
  980820 19:07:43
  980820 20:55:00
  980820 22:42:17

  980821 00:29:34
  980821 02:16:51
  980821 04:04:08
  980821 05:51:25
  980821 07:38:42
  980821 09:25:59
  980821 11:13:16
  980821 13:00:32
  980821 14:47:49
  980821 16:35:06
  980821 18:22:23
  980821 20:09:40
  980821 21:56:57
  980821 23:44:14

2) Robinson et al. (1995) ApJ 443, 295
  removing the quadratic term

  BJDD = 2440264.68213 + 0.0744992575*E

  980819 00:01:36
  980819 01:48:53
  980819 03:36:10
  980819 05:23:27
  980819 07:10:43
  980819 08:58:00
  980819 10:45:17
  980819 12:32:34
  980819 14:19:51
  980819 16:07:08
  980819 17:54:25
  980819 19:41:42
  980819 21:28:59
  980819 23:16:15

  980820 01:03:32
  980820 02:50:49
  980820 04:38:06
  980820 06:25:23
  980820 08:12:40
  980820 09:59:57
  980820 11:47:14
  980820 13:34:31
  980820 15:21:47
  980820 17:09:04
  980820 18:56:21
  980820 20:43:38
  980820 22:30:55

  980821 00:18:12
  980821 02:05:29
  980821 03:52:46
  980821 05:40:03
  980821 07:27:19
  980821 09:14:36
  980821 11:01:53
  980821 12:49:10
  980821 14:36:27
  980821 16:23:44
  980821 18:11:01
  980821 19:58:18
  980821 21:45:35
  980821 23:32:51

3) ephemeris corrected using July eclipse observations by Stubbings

  BJDD = 2451001.9678 + 0.0744992575*E

  980819 00:09:47
  980819 01:57:04
  980819 03:44:21
  980819 05:31:38
  980819 07:18:55
  980819 09:06:11
  980819 10:53:28
  980819 12:40:45
  980819 14:28:02
  980819 16:15:19
  980819 18:02:36
  980819 19:49:53
  980819 21:37:10
  980819 23:24:27

  980820 01:11:43
  980820 02:59:00
  980820 04:46:17
  980820 06:33:34
  980820 08:20:51
  980820 10:08:08
  980820 11:55:25
  980820 13:42:42
  980820 15:29:59
  980820 17:17:15
  980820 19:04:32
  980820 20:51:49
  980820 22:39:06

  980821 00:26:23
  980821 02:13:40
  980821 04:00:57
  980821 05:48:14
  980821 07:35:31
  980821 09:22:47
  980821 11:10:04
  980821 12:57:21
  980821 14:44:38
  980821 16:31:55
  980821 18:19:12
  980821 20:06:29
  980821 21:53:46
  980821 23:41:02

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