Ephemeris for 117P/Helin-Roman-Alu

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 117P/Helin-Roman-Alu
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 117P/Helin-Roman-Alu
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	Apr	10	00:00 PDT	22 days	05^h22^m53^s	+27°34'01"	09:32	16:58	00:24	20.0	20:20 until 22:22	Taurus
2026	Apr	11	00:00 PDT	23 days	05^h23^m34^s	+27°34'26"	09:28	16:54	00:20	20.0	20:21 until 22:18	Taurus
2026	Apr	12	00:00 PDT	24 days	05^h24^m15^s	+27°34'52"	09:25	16:51	00:17	20.0	20:22 until 22:15	Taurus
2026	Apr	13	00:00 PDT	25 days	05^h24^m57^s	+27°35'18"	09:22	16:48	00:14	20.0	20:22 until 22:12	Taurus
2026	Apr	14	00:00 PDT	26 days	05^h25^m39^s	+27°35'44"	09:19	16:45	00:11	20.0	20:23 until 22:09	Taurus
2026	Apr	15	00:00 PDT	27 days	05^h26^m22^s	+27°36'09"	09:15	16:41	00:08	20.0	20:24 until 22:05	Taurus
2026	Apr	16	00:00 PDT	28 days	05^h27^m05^s	+27°36'35"	09:12	16:38	00:04	20.0	20:25 until 22:02	Taurus
2026	Apr	17	00:00 PDT	29 days	05^h27^m48^s	+27°37'01"	09:09	16:35	00:01	20.0	20:26 until 21:59	Taurus
2026	Apr	18	00:00 PDT	00 days	05^h28^m32^s	+27°37'27"	09:06	16:32	23:58	20.0	20:27 until 21:56	Taurus
2026	Apr	19	00:00 PDT	01 days	05^h29^m17^s	+27°37'53"	09:02	16:29	23:55	20.0	20:28 until 21:53	Taurus
2026	Apr	20	00:00 PDT	02 days	05^h30^m02^s	+27°38'18"	08:59	16:25	23:52	20.0	20:29 until 21:49	Taurus
2026	Apr	21	00:00 PDT	03 days	05^h30^m47^s	+27°38'44"	08:56	16:22	23:49	20.0	20:30 until 21:46	Taurus
2026	Apr	22	00:00 PDT	04 days	05^h31^m33^s	+27°39'09"	08:53	16:19	23:45	20.0	20:31 until 21:43	Taurus
2026	Apr	23	00:00 PDT	05 days	05^h32^m19^s	+27°39'35"	08:50	16:16	23:42	20.0	20:32 until 21:40	Taurus
2026	Apr	24	00:00 PDT	06 days	05^h33^m06^s	+27°40'00"	08:46	16:13	23:39	20.0	20:33 until 21:37	Taurus
2026	Apr	25	00:00 PDT	07 days	05^h33^m53^s	+27°40'25"	08:43	16:10	23:36	20.0	20:34 until 21:34	Taurus
2026	Apr	26	00:00 PDT	08 days	05^h34^m40^s	+27°40'49"	08:40	16:07	23:33	20.1	20:35 until 21:31	Taurus
2026	Apr	27	00:00 PDT	09 days	05^h35^m28^s	+27°41'14"	08:37	16:03	23:30	20.1	20:36 until 21:27	Taurus
2026	Apr	28	00:00 PDT	10 days	05^h36^m16^s	+27°41'38"	08:34	16:00	23:27	20.1	20:37 until 21:24	Taurus
2026	Apr	29	00:00 PDT	11 days	05^h37^m05^s	+27°42'02"	08:31	15:57	23:24	20.1	20:38 until 21:21	Taurus
2026	Apr	30	00:00 PDT	12 days	05^h37^m54^s	+27°42'25"	08:28	15:54	23:21	20.1	20:39 until 21:18	Taurus
2026	May	01	00:00 PDT	13 days	05^h38^m43^s	+27°42'48"	08:24	15:51	23:17	20.1	20:40 until 21:15	Taurus
2026	May	02	00:00 PDT	14 days	05^h39^m33^s	+27°43'11"	08:21	15:48	23:14	20.1	20:40 until 21:12	Taurus
2026	May	03	00:00 PDT	15 days	05^h40^m23^s	+27°43'33"	08:18	15:45	23:11	20.1	20:41 until 21:09	Taurus
2026	May	04	00:00 PDT	16 days	05^h41^m13^s	+27°43'55"	08:15	15:42	23:08	20.1	20:42 until 21:06	Taurus
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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