| Ephemeris for 1P/Halley | | DATE | Time | Age of | RIGHT ASCENS | DECLINATION | Rise | Culm | Set | Approx| Observable | Constellation | Year Mth Day | | Moon | hour min sec | deg min sec | | | | Mag. | | | | 2024 05 06 | 20:00 | 28 days | 08 11 06 | +03 20 52 | 11:39 | 17:54 | 00:09 | -- | 11:39 until 00:09 | Canis Minor | 2024 05 07 | 20:00 | 29 days | 08 11 07 | +03 21 15 | 11:35 | 17:50 | 00:06 | -- | 11:35 until 00:06 | Canis Minor | 2024 05 08 | 20:00 | 00 days | 08 11 09 | +03 21 38 | 11:31 | 17:46 | 00:02 | -- | 11:31 until 00:02 | Canis Minor | 2024 05 09 | 20:00 | 02 days | 08 11 11 | +03 22 00 | 11:27 | 17:42 | 23:58 | -- | 11:27 until 23:58 | Hydra | 2024 05 10 | 20:00 | 03 days | 08 11 13 | +03 22 22 | 11:23 | 17:38 | 23:54 | -- | 11:23 until 23:54 | Hydra | 2024 05 11 | 20:00 | 04 days | 08 11 15 | +03 22 43 | 11:19 | 17:35 | 23:50 | -- | 11:19 until 23:50 | Hydra | 2024 05 12 | 20:00 | 05 days | 08 11 17 | +03 23 03 | 11:15 | 17:31 | 23:46 | -- | 11:15 until 23:46 | Hydra | 2024 05 13 | 20:00 | 06 days | 08 11 19 | +03 23 23 | 11:11 | 17:27 | 23:42 | -- | 11:11 until 23:42 | Hydra | 2024 05 14 | 20:00 | 06 days | 08 11 21 | +03 23 42 | 11:07 | 17:23 | 23:38 | -- | 11:07 until 23:38 | Hydra | 2024 05 15 | 20:00 | 07 days | 08 11 24 | +03 24 01 | 11:03 | 17:19 | 23:34 | -- | 11:03 until 23:34 | Hydra | 2024 05 16 | 20:00 | 08 days | 08 11 26 | +03 24 20 | 11:00 | 17:15 | 23:31 | -- | 11:00 until 23:31 | Hydra | 2024 05 17 | 20:00 | 09 days | 08 11 29 | +03 24 37 | 10:56 | 17:11 | 23:27 | -- | 10:56 until 23:27 | Hydra | 2024 05 18 | 20:00 | 10 days | 08 11 31 | +03 24 55 | 10:52 | 17:07 | 23:23 | -- | 10:52 until 23:23 | Hydra | 2024 05 19 | 20:00 | 11 days | 08 11 34 | +03 25 11 | 10:48 | 17:03 | 23:19 | -- | 10:48 until 23:19 | Hydra | 2024 05 20 | 20:00 | 12 days | 08 11 37 | +03 25 28 | 10:44 | 17:00 | 23:15 | -- | 10:44 until 23:15 | Hydra | 2024 05 21 | 20:00 | 13 days | 08 11 40 | +03 25 43 | 10:40 | 16:56 | 23:11 | -- | 10:40 until 23:11 | Hydra | 2024 05 22 | 20:00 | 14 days | 08 11 43 | +03 25 58 | 10:36 | 16:52 | 23:07 | -- | 10:36 until 23:07 | Hydra | 2024 05 23 | 20:00 | 15 days | 08 11 46 | +03 26 13 | 10:32 | 16:48 | 23:04 | -- | 10:32 until 23:04 | Hydra | 2024 05 24 | 20:00 | 16 days | 08 11 49 | +03 26 27 | 10:28 | 16:44 | 23:00 | -- | 10:28 until 23:00 | Hydra | 2024 05 25 | 20:00 | 17 days | 08 11 53 | +03 26 40 | 10:24 | 16:40 | 22:56 | -- | 10:24 until 22:56 | Hydra | 2024 05 26 | 20:00 | 18 days | 08 11 56 | +03 26 53 | 10:21 | 16:36 | 22:52 | -- | 10:21 until 22:52 | Hydra | 2024 05 27 | 20:00 | 19 days | 08 12 00 | +03 27 05 | 10:17 | 16:32 | 22:48 | -- | 10:17 until 22:48 | Hydra | 2024 05 28 | 20:00 | 20 days | 08 12 03 | +03 27 17 | 10:13 | 16:29 | 22:44 | -- | 10:13 until 22:44 | Hydra | 2024 05 29 | 20:00 | 21 days | 08 12 07 | +03 27 28 | 10:09 | 16:25 | 22:40 | -- | 10:09 until 22:40 | Hydra | 2024 05 30 | 20:00 | 22 days | 08 12 10 | +03 27 39 | 10:05 | 16:21 | 22:37 | -- | 10:05 until 22:37 | Hydra | | All times computed for Cambridge (latitude 42.38; longitude -71.11) | and expressed in Cambridge time. | | Ephemeris computed by Dominic Ford. |