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	06	00:00 PST	16 days	09^h03^m38^s	−16°32'14"	16:39	21:55	03:12	19.7	18:51 until 01:06	Hydra
2026	Mar	07	00:00 PST	17 days	09^h03^m02^s	−16°21'09"	16:34	21:51	04:08	19.7	18:51 until 01:03	Hydra
2026	Mar	08	00:00 PST	18 days	09^h02^m26^s	−16°10'02"	17:29	22:46	04:04	19.8	19:52 until 01:59	Hydra
2026	Mar	09	01:00 PDT	19 days	09^h01^m52^s	−15°58'53"	17:24	22:42	04:00	19.8	19:53 until 01:56	Hydra
2026	Mar	10	01:00 PDT	20 days	09^h01^m19^s	−15°47'42"	17:19	22:37	03:56	19.8	19:54 until 01:52	Hydra
2026	Mar	11	01:00 PDT	21 days	09^h00^m47^s	−15°36'30"	17:14	22:33	03:52	19.8	19:55 until 01:48	Hydra
2026	Mar	12	01:00 PDT	22 days	09^h00^m17^s	−15°25'17"	17:09	22:29	03:48	19.8	19:55 until 01:45	Hydra
2026	Mar	13	01:00 PDT	23 days	08^h59^m47^s	−15°14'04"	17:04	22:24	03:45	19.9	19:56 until 01:41	Hydra
2026	Mar	14	01:00 PDT	24 days	08^h59^m19^s	−15°02'52"	16:59	22:20	03:41	19.9	19:57 until 01:38	Hydra
2026	Mar	15	01:00 PDT	25 days	08^h58^m52^s	−14°51'39"	16:54	22:15	03:37	19.9	19:58 until 01:34	Hydra
2026	Mar	16	01:00 PDT	26 days	08^h58^m26^s	−14°40'27"	16:49	22:11	03:33	19.9	19:59 until 01:30	Hydra
2026	Mar	17	01:00 PDT	27 days	08^h58^m02^s	−14°29'17"	16:44	22:07	03:29	19.9	19:59 until 01:27	Hydra
2026	Mar	18	01:00 PDT	28 days	08^h57^m38^s	−14°18'08"	16:39	22:02	03:25	20.0	20:00 until 01:23	Hydra
2026	Mar	19	01:00 PDT	00 days	08^h57^m16^s	−14°07'00"	16:34	21:58	03:22	20.0	20:01 until 01:20	Hydra
2026	Mar	20	01:00 PDT	01 days	08^h56^m55^s	−13°55'56"	16:29	21:54	03:18	20.0	20:02 until 01:16	Hydra
2026	Mar	21	01:00 PDT	02 days	08^h56^m35^s	−13°44'53"	16:25	21:49	03:14	20.0	20:03 until 01:13	Hydra
2026	Mar	22	01:00 PDT	03 days	08^h56^m17^s	−13°33'54"	16:20	21:45	03:11	20.0	20:04 until 01:10	Hydra
2026	Mar	23	01:00 PDT	04 days	08^h56^m00^s	−13°22'58"	16:15	21:41	03:07	20.1	20:04 until 01:06	Hydra
2026	Mar	24	01:00 PDT	05 days	08^h55^m44^s	−13°12'05"	16:10	21:37	03:03	20.1	20:05 until 01:03	Hydra
2026	Mar	25	01:00 PDT	06 days	08^h55^m29^s	−13°01'16"	16:06	21:33	02:59	20.1	20:06 until 00:59	Hydra
2026	Mar	26	01:00 PDT	07 days	08^h55^m15^s	−12°50'32"	16:01	21:28	02:56	20.1	20:07 until 00:56	Hydra
2026	Mar	27	01:00 PDT	08 days	08^h55^m03^s	−12°39'51"	15:56	21:24	02:52	20.1	20:08 until 00:52	Hydra
2026	Mar	28	01:00 PDT	09 days	08^h54^m51^s	−12°29'16"	15:52	21:20	02:49	20.2	20:09 until 00:49	Hydra
2026	Mar	29	01:00 PDT	10 days	08^h54^m41^s	−12°18'45"	15:47	21:16	02:45	20.2	20:09 until 00:46	Hydra
2026	Mar	30	01:00 PDT	11 days	08^h54^m32^s	−12°08'19"	15:43	21:12	02:41	20.2	20:10 until 00:42	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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