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	Jan	29	00:00 PST	10 days	09^h34^m14^s	−21°43'09"	19:51	00:51	05:52	19.1	22:08 until 03:35	Hydra
2026	Jan	30	00:00 PST	11 days	09^h33^m17^s	−21°38'11"	19:46	00:47	05:47	19.2	22:02 until 03:31	Hydra
2026	Jan	31	00:00 PST	12 days	09^h32^m20^s	−21°32'57"	19:41	00:42	05:43	19.2	21:57 until 03:26	Hydra
2026	Feb	01	00:00 PST	13 days	09^h31^m23^s	−21°27'28"	19:35	00:37	05:38	19.2	21:52 until 03:22	Hydra
2026	Feb	02	00:00 PST	14 days	09^h30^m26^s	−21°21'43"	19:30	00:32	05:34	19.2	21:46 until 03:18	Hydra
2026	Feb	03	00:00 PST	15 days	09^h29^m29^s	−21°15'43"	19:25	00:27	05:29	19.2	21:41 until 03:13	Hydra
2026	Feb	04	00:00 PST	16 days	09^h28^m31^s	−21°09'28"	19:20	00:22	05:25	19.2	21:35 until 03:09	Hydra
2026	Feb	05	00:00 PST	17 days	09^h27^m34^s	−21°02'58"	19:15	00:17	05:20	19.2	21:30 until 03:05	Hydra
2026	Feb	06	00:00 PST	18 days	09^h26^m37^s	−20°56'13"	19:09	00:12	05:15	19.2	21:24 until 03:01	Hydra
2026	Feb	07	00:00 PST	19 days	09^h25^m40^s	−20°49'14"	19:04	00:08	05:11	19.3	21:19 until 02:56	Hydra
2026	Feb	08	00:00 PST	20 days	09^h24^m44^s	−20°42'01"	18:59	00:03	05:06	19.3	21:13 until 02:52	Hydra
2026	Feb	09	00:00 PST	21 days	09^h23^m47^s	−20°34'34"	18:50	23:54	04:58	19.3	21:04 until 02:44	Hydra
2026	Feb	10	00:00 PST	22 days	09^h22^m51^s	−20°26'54"	18:44	23:49	04:54	19.3	20:58 until 02:40	Hydra
2026	Feb	11	00:00 PST	23 days	09^h21^m55^s	−20°19'00"	18:39	23:44	04:49	19.3	20:52 until 02:36	Hydra
2026	Feb	12	00:00 PST	24 days	09^h21^m00^s	−20°10'53"	18:34	23:39	04:45	19.3	20:47 until 02:32	Hydra
2026	Feb	13	00:00 PST	25 days	09^h20^m05^s	−20°02'34"	18:28	23:34	04:40	19.4	20:41 until 02:28	Hydra
2026	Feb	14	00:00 PST	26 days	09^h19^m10^s	−19°54'03"	18:23	23:30	04:36	19.4	20:36 until 02:24	Hydra
2026	Feb	15	00:00 PST	27 days	09^h18^m16^s	−19°45'20"	18:18	23:25	04:32	19.4	20:30 until 02:19	Hydra
2026	Feb	16	00:00 PST	28 days	09^h17^m23^s	−19°36'26"	18:13	23:20	04:27	19.4	20:24 until 02:15	Hydra
2026	Feb	17	00:00 PST	29 days	09^h16^m30^s	−19°27'21"	18:07	23:15	04:23	19.4	20:19 until 02:11	Hydra
2026	Feb	18	00:00 PST	00 days	09^h15^m38^s	−19°18'05"	18:02	23:10	04:19	19.4	20:13 until 02:07	Hydra
2026	Feb	19	00:00 PST	01 days	09^h14^m46^s	−19°08'39"	17:57	23:06	04:14	19.5	20:08 until 02:04	Hydra
2026	Feb	20	00:00 PST	02 days	09^h13^m55^s	−18°59'03"	17:52	23:01	04:10	19.5	20:02 until 02:00	Hydra
2026	Feb	21	00:00 PST	03 days	09^h13^m05^s	−18°49'19"	17:46	22:56	04:06	19.5	19:56 until 01:56	Hydra
2026	Feb	22	00:00 PST	04 days	09^h12^m16^s	−18°39'25"	17:41	22:51	04:01	19.5	19:51 until 01:52	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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