Ephemeris for C/2012 S1 (ISON)

by Dominic Ford

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You are welcome to reproduce the data below for non-profit purposes , providing you credit In-The-Sky.org.

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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 C/2012 S1 (ISON)
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 C/2012 S1 (ISON)
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	May	22	00:00 PDT	05 days	07^h19^m22^s	+36°44'00"	08:04	16:09	00:14	24.0	21:00 until 21:55	Auriga
2026	May	23	00:00 PDT	06 days	07^h19^m28^s	+36°43'29"	08:00	16:05	00:10	24.0	21:00 until 21:51	Auriga
2026	May	24	00:00 PDT	07 days	07^h19^m34^s	+36°42'57"	07:56	16:01	00:06	24.0	21:01 until 21:47	Auriga
2026	May	25	00:00 PDT	08 days	07^h19^m41^s	+36°42'26"	07:52	15:57	00:02	24.0	21:02 until 21:43	Auriga
2026	May	26	00:00 PDT	09 days	07^h19^m48^s	+36°41'55"	07:48	15:53	23:58	24.0	21:03 until 21:40	Auriga
2026	May	27	00:00 PDT	10 days	07^h19^m54^s	+36°41'24"	07:45	15:50	23:55	24.0	21:04 until 21:36	Auriga
2026	May	28	00:00 PDT	11 days	07^h20^m01^s	+36°40'54"	07:41	15:46	23:51	24.0	21:05 until 21:32	Auriga
2026	May	29	00:00 PDT	12 days	07^h20^m08^s	+36°40'23"	07:37	15:42	23:47	24.0	21:06 until 21:28	Auriga
2026	May	30	00:00 PDT	13 days	07^h20^m15^s	+36°39'53"	07:33	15:38	23:43	24.0	21:06 until 21:24	Auriga
2026	May	31	00:00 PDT	14 days	07^h20^m22^s	+36°39'23"	07:30	15:34	23:39	24.0	21:07 until 21:20	Auriga
2026	Jun	01	00:00 PDT	15 days	07^h20^m30^s	+36°38'53"	07:26	15:31	23:35	24.0	21:08 until 21:17	Auriga
2026	Jun	02	00:00 PDT	16 days	07^h20^m37^s	+36°38'23"	07:22	15:27	23:31	24.0	21:09 until 21:13	Auriga
2026	Jun	03	00:00 PDT	17 days	07^h20^m44^s	+36°37'54"	07:18	15:23	23:28	24.0	Not observable	Auriga
2026	Jun	04	00:00 PDT	18 days	07^h20^m52^s	+36°37'25"	07:14	15:19	23:24	24.0	Not observable	Auriga
2026	Jun	05	00:00 PDT	19 days	07^h21^m00^s	+36°36'56"	07:11	15:15	23:20	24.0	Not observable	Auriga
2026	Jun	06	00:00 PDT	20 days	07^h21^m07^s	+36°36'27"	07:07	15:11	23:16	24.0	Not observable	Auriga
2026	Jun	07	00:00 PDT	21 days	07^h21^m15^s	+36°35'59"	07:03	15:08	23:12	24.0	Not observable	Auriga
2026	Jun	08	00:00 PDT	22 days	07^h21^m23^s	+36°35'30"	06:59	15:04	23:08	24.0	Not observable	Auriga
2026	Jun	09	00:00 PDT	23 days	07^h21^m31^s	+36°35'02"	06:56	15:00	23:04	24.0	Not observable	Auriga
2026	Jun	10	00:00 PDT	24 days	07^h21^m39^s	+36°34'35"	06:52	14:56	23:01	24.0	Not observable	Auriga
2026	Jun	11	00:00 PDT	25 days	07^h21^m47^s	+36°34'07"	06:48	14:52	22:57	24.0	Not observable	Auriga
2026	Jun	12	00:00 PDT	26 days	07^h21^m55^s	+36°33'40"	06:44	14:49	22:53	24.0	Not observable	Auriga
2026	Jun	13	00:00 PDT	27 days	07^h22^m03^s	+36°33'13"	06:41	14:45	22:49	24.0	Not observable	Auriga
2026	Jun	14	00:00 PDT	28 days	07^h22^m11^s	+36°32'47"	06:37	14:41	22:45	24.0	Not observable	Auriga
2026	Jun	15	00:00 PDT	00 days	07^h22^m20^s	+36°32'20"	06:33	14:37	22:41	24.0	Not observable	Auriga
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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