[BAA-ebulletin 00922] Bright spots on Neptune.
BAA electronic bulletins service
baa-ebulletin at britastro.org
Wed Jun 15 19:35:59 BST 2016
On 11 June at 12:51 UT, Australian amateurs Darryl Milika and Pat Nicholas imaged two bright spots on Neptune using a C14 and IR 610nm filter.
These spots have been confirmed by Ricardo Hueso in professional
observations made by the team at the Calar Alto observatory in Spain using a 2.2m
telescope (Agustín Sánchez-Lavega) on 17 May. One has also been imaged by the
Hubble Space Telescope.
Ricardo Hueso has also kindly provided a provisional ephemeris based on observation to
date for the two objects. This is reproduced below with permission.
These spots are within the imaging capability of those with larger telescopes and further observations are urgently required.
Mike Foulkes Saturn Section Director
* EPHEMERIS Bright White
Complex (Drift rate -2.76º/hour;
Latitude: -28º)
DATE UT CM(LON)
2016-May-16 02:11:24 72.0* (HST observations)
2016-May-19 22:05:58 325.8* (PlanetCam observations)
2016-June-11 21:33:25 48.9* (Milika & Nicholas)
2016-June-12 15:56:20 99.7
2016-June-13 10:19:15 150.5
2016-June-14 04:42:10 201.2
2016-June-14 23:05:05 252.0
2016-June-15 17:27:60 302.8
2016-June-16 11:50:55 353.5
2016-June-17 06:13:50 44.3
2016-June-18 00:36:44 95.1
2016-June-18 18:59:39 145.8
2016-June-19 13:22:34 196.6
2016-June-20 07:45:29 247.4
2016-June-21 02:08:24 298.1
2016-June-21 20:31:19 348.9
2016-June-22 14:54:14 39.7
2016-June-23 09:17:09 90.5
2016-June-24 03:40:04 141.2
2016-June-24 22:02:59 192.0
2016-June-25 16:25:53 242.8
2016-June-26 10:48:48 293.5
2016-June-27 05:11:43 344.3
2016-June-27 23:34:38 35.1
2016-June-28 17:57:33 85.8
2016-June-29 12:20:28 136.6
2016-June-30 06:43:23 187.4
2016-July-01 01:06:18 238.1
2016-July-01 19:29:13 288.9
2016-July-02 13:52:08 339.7
2016-July-03 08:15:02 30.5
2016-July-04 02:37:57 81.2
2016-July-04 21:00:52 132.0
2016-July-05 15:23:47 182.8
2016-July-06 09:46:42 233.5
2016-July-07 04:09:37 284.3
2016-July-07 22:32:32 335.1
2016-July-08 16:55:27 25.8
2016-July-09 11:18:22 76.6
2016-July-10 05:41:17 127.4
2016-July-11 00:04:12 178.1
2016-July-11 18:27:06 228.9
2016-July-12 12:50:01 279.7
2016-July-13 07:12:56 330.5
2016-July-14 01:35:51 21.2
2016-July-14 19:58:46 72.0
2016-July-15 14:21:41 122.8
2016-July-16 08:44:36 173.5
2016-July-17 03:07:31 224.3
2016-July-17 21:30:26 275.1
2016-July-18 15:53:21 325.8
2016-July-19 10:16:15 16.6
2016-July-20 04:39:10 67.4
2016-July-20 23:02:05 118.1
2016-July-21 17:25:00 168.9
2016-July-22 11:47:55 219.7
2016-July-23 06:10:50 270.5
2016-July-24 00:33:45 321.2
2016-July-24 18:56:40 12.0
2016-July-25 13:19:35 62.8
* 2016-July-26 07:42:30 113.5
2016-July-27 02:05:24 164.3
2016-July-27 20:28:19 215.1
2016-July-28 14:51:14 265.8
2016-July-29 09:14:09 316.6
2016-July-30 03:37:04 7.4
2016-July-30 21:59:59 58.1
2016-July-31 16:22:54 108.9
2016-Augt-01 10:45:49 159.7
2016-Augt-02 05:08:44 210.4
2016-Augt-02 23:31:39 261.2
2016-Augt-03 17:54:33 312.0
2016-Augt-04 12:17:28 2.8
2016-Augt-05 06:40:23 53.5
2016-Augt-06 01:03:18 104.3
2016-Augt-06 19:26:13 155.1
2016-Augt-07 13:49:08 205.8
2016-Augt-08 08:12:03 256.6
2016-Augt-09 02:34:58 307.4
2016-Augt-09 20:57:53 358.1
2016-Augt-10 15:20:48 48.9
2016-Augt-11 09:43:43 99.7
2016-Augt-12 04:06:37 150.4
2016-Augt-12 22:29:32 201.2
2016-Augt-13 16:52:27 252.0
2016-Augt-14 11:15:22 302.8
2016-Augt-15 05:38:17 353.5
2016-Augt-16 00:01:12 44.3
2016-Augt-16 18:24:07 95.1
2016-Augt-17 12:47:02 145.8
2016-Augt-18 07:09:57 196.6
2016-Augt-19 01:32:52 247.4
2016-Augt-19 19:55:46 298.1
Ephemeris_NF.dat1/ 2
*
* EPHEMERIS North Tropical
Feature (Drift rate -3.07º/hour; Latitude:
+22º)
DATE UT CM(LON)
2016-May-17 04:34:44 298.0 * (PlanetCam)
2016-June-11 21:01:49 33.5 * (Millika And Nicholas)
2016-June-12 15:42:39 90.9
2016-June-13 10:23:28 148.3
2016-June-14 05:04:17 205.8
2016-June-14 23:45:06 263.2
2016-June-15 18:25:56 320.6
2016-June-16 13:06:45 18.1
2016-June-17 07:47:34 75.5
2016-June-18 02:28:24 133.0
2016-June-18 21:09:13 190.4
2016-June-19 15:50:02 247.8
2016-June-20 10:30:51 305.3
2016-June-21 05:11:41 2.7
2016-June-21 23:52:30 60.1
2016-June-22 18:33:19 117.6
2016-June-23 13:14:08 175.0
2016-June-24 07:54:58 232.5
2016-June-25 02:35:47 289.9
2016-June-25 21:16:36 347.3
2016-June-26 15:57:25 44.8
2016-June-27 10:38:15 102.2
2016-June-28 05:19:04 159.7
2016-June-28 23:59:53 217.1
2016-June-29 18:40:42 274.5
2016-June-30 13:21:32 332.0
2016-July-01 08:02:21 29.4
2016-July-02 02:43:10 86.8
2016-July-02 21:23:59 144.3
2016-July-03 16:04:49 201.7
2016-July-04 10:45:38 259.2
2016-July-05 05:26:27 316.6
2016-July-06 00:07:17 14.0
2016-July-06 18:48:06 71.5
2016-July-07 13:28:55 128.9
2016-July-08 08:09:44 186.3
2016-July-09 02:50:34 243.8
2016-July-09 21:31:23 301.2
2016-July-10 16:12:12 358.7
2016-July-11 10:53:01 56.1
2016-July-12 05:33:51 113.5
2016-July-13 00:14:40 171.0
2016-July-13 18:55:29 228.4
2016-July-14 13:36:18 285.8
2016-July-15 08:17:08 343.3
2016-July-16 02:57:57 40.7
2016-July-16 21:38:46 98.2
2016-July-17 16:19:35 155.6
2016-July-18 11:00:25 213.0
2016-July-19 05:41:14 270.5
2016-July-20 00:22:03 327.9
2016-July-20 19:02:52 25.4
2016-July-21 13:43:42 82.8
2016-July-22 08:24:31 140.2
2016-July-23 03:05:20 197.7
2016-July-23 21:46:10 255.1
2016-July-24 16:26:59 312.5
2016-July-25 11:07:48 10.0
2016-July-26 05:48:37 67.4
2016-July-27 00:29:27 124.9
* 2016-July-27 19:10:16 182.3
2016-July-28 13:51:05 239.7
2016-July-29 08:31:54 297.2
2016-July-30 03:12:44 354.6
2016-July-30 21:53:33 52.0
2016-July-31 16:34:22 109.5
2016-Augt-01 11:15:11 166.9
2016-Augt-02 05:56:01 224.4
2016-Augt-03 00:36:50 281.8
2016-Augt-03 19:17:39 339.2
2016-Augt-04 13:58:28 36.7
2016-Augt-05 08:39:18 94.1
2016-Augt-06 03:20:07 151.6
2016-Augt-06 22:00:56 209.0
2016-Augt-07 16:41:45 266.4
2016-Augt-08 11:22:35 323.9
2016-Augt-09 06:03:24 21.3
2016-Augt-10 00:44:13 78.7
2016-Augt-10 19:25:03 136.2
2016-Augt-11 14:05:52 193.6
2016-Augt-12 08:46:41 251.1
2016-Augt-13 03:27:30 308.5
2016-Augt-13 22:08:20 5.9
2016-Augt-14 16:49:09 63.4
2016-Augt-15 11:29:58 120.8
2016-Augt-16 06:10:47 178.2
2016-Augt-17 00:51:37 235.7
2016-Augt-17 19:32:26 293.1
2016-Augt-18 14:13:15 350.6
2016-Augt-19 08:54:04 48.0
2016-Augt-20 03:34:54 105.4
2016-Augt-20 22:15:43 162.9
*
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