Ephemeris for 21P/Giacobini-Zinner

by Dominic Ford

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All times computed for South El Monte (latitude 34.05°; longitude -118.05°) and expressed in South El Monte time.

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Ephemeris for 21P/Giacobini-Zinner
Date	Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation
Date	Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation

Ephemeris for 21P/Giacobini-Zinner
Date			Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation
Date			Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation
2026	Mar	13	00:00 PDT	23 days	08^h59^m49^s	−15°14'33"	17:04	22:24	03:45	19.9	19:56 until 01:41	Hydra
2026	Mar	14	00:00 PDT	24 days	08^h59^m20^s	−15°03'20"	16:59	22:20	03:41	19.9	19:57 until 01:38	Hydra
2026	Mar	15	00:00 PDT	25 days	08^h58^m53^s	−14°52'07"	16:54	22:15	03:37	19.9	19:58 until 01:34	Hydra
2026	Mar	16	00:00 PDT	26 days	08^h58^m27^s	−14°40'55"	16:49	22:11	03:33	19.9	19:59 until 01:30	Hydra
2026	Mar	17	00:00 PDT	27 days	08^h58^m03^s	−14°29'45"	16:44	22:07	03:29	19.9	19:59 until 01:27	Hydra
2026	Mar	18	00:00 PDT	28 days	08^h57^m39^s	−14°18'36"	16:39	22:02	03:25	20.0	20:00 until 01:23	Hydra
2026	Mar	19	00:00 PDT	00 days	08^h57^m17^s	−14°07'28"	16:34	21:58	03:22	20.0	20:01 until 01:20	Hydra
2026	Mar	20	00:00 PDT	01 days	08^h56^m56^s	−13°56'23"	16:29	21:54	03:18	20.0	20:02 until 01:16	Hydra
2026	Mar	21	00:00 PDT	02 days	08^h56^m36^s	−13°45'21"	16:25	21:49	03:14	20.0	20:03 until 01:13	Hydra
2026	Mar	22	00:00 PDT	03 days	08^h56^m18^s	−13°34'21"	16:20	21:45	03:11	20.0	20:04 until 01:10	Hydra
2026	Mar	23	00:00 PDT	04 days	08^h56^m00^s	−13°23'25"	16:15	21:41	03:07	20.1	20:04 until 01:06	Hydra
2026	Mar	24	00:00 PDT	05 days	08^h55^m44^s	−13°12'32"	16:10	21:37	03:03	20.1	20:05 until 01:03	Hydra
2026	Mar	25	00:00 PDT	06 days	08^h55^m29^s	−13°01'43"	16:06	21:33	02:59	20.1	20:06 until 00:59	Hydra
2026	Mar	26	00:00 PDT	07 days	08^h55^m16^s	−12°50'58"	16:01	21:28	02:56	20.1	20:07 until 00:56	Hydra
2026	Mar	27	00:00 PDT	08 days	08^h55^m03^s	−12°40'18"	15:56	21:24	02:52	20.1	20:08 until 00:52	Hydra
2026	Mar	28	00:00 PDT	09 days	08^h54^m52^s	−12°29'42"	15:52	21:20	02:49	20.2	20:09 until 00:49	Hydra
2026	Mar	29	00:00 PDT	10 days	08^h54^m42^s	−12°19'11"	15:47	21:16	02:45	20.2	20:09 until 00:46	Hydra
2026	Mar	30	00:00 PDT	11 days	08^h54^m33^s	−12°08'45"	15:43	21:12	02:41	20.2	20:10 until 00:42	Hydra
2026	Mar	31	00:00 PDT	12 days	08^h54^m25^s	−11°58'25"	15:38	21:08	02:38	20.2	20:11 until 00:39	Hydra
2026	Apr	01	00:00 PDT	13 days	08^h54^m19^s	−11°48'09"	15:34	21:04	02:34	20.3	20:12 until 00:36	Hydra
2026	Apr	02	00:00 PDT	14 days	08^h54^m13^s	−11°38'00"	15:29	21:00	02:31	20.3	20:13 until 00:32	Hydra
2026	Apr	03	00:00 PDT	15 days	08^h54^m09^s	−11°27'56"	15:25	20:56	02:27	20.3	20:14 until 00:29	Hydra
2026	Apr	04	00:00 PDT	16 days	08^h54^m06^s	−11°17'59"	15:20	20:52	02:24	20.3	20:14 until 00:26	Hydra
2026	Apr	05	00:00 PDT	17 days	08^h54^m04^s	−11°08'07"	15:16	20:48	02:20	20.3	20:15 until 00:22	Hydra
2026	Apr	06	00:00 PDT	18 days	08^h54^m03^s	−10°58'22"	15:11	20:44	02:17	20.4	20:16 until 00:19	Hydra
All times computed for South El Monte (latitude 34.05; longitude -118.05) and expressed in South El Monte time. All positions are in J2000.0 coordinates. Ephemeris by Dominic Ford – https://in-the-sky.org/ephemeris.php

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