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	Mar	23	00:00 PDT	04 days	05^h12^m17^s	+27°27'14"	10:32	17:58	01:23	19.8	20:04 until 23:21	Taurus
2026	Mar	24	00:00 PDT	05 days	05^h12^m47^s	+27°27'32"	10:29	17:54	01:20	19.8	20:05 until 23:18	Taurus
2026	Mar	25	00:00 PDT	06 days	05^h13^m18^s	+27°27'52"	10:25	17:51	01:17	19.8	20:06 until 23:15	Taurus
2026	Mar	26	00:00 PDT	07 days	05^h13^m50^s	+27°28'12"	10:22	17:48	01:13	19.9	20:07 until 23:11	Taurus
2026	Mar	27	00:00 PDT	08 days	05^h14^m22^s	+27°28'32"	10:19	17:44	01:10	19.9	20:08 until 23:08	Taurus
2026	Mar	28	00:00 PDT	09 days	05^h14^m55^s	+27°28'53"	10:15	17:41	01:06	19.9	20:09 until 23:04	Taurus
2026	Mar	29	00:00 PDT	10 days	05^h15^m28^s	+27°29'14"	10:12	17:37	01:03	19.9	20:09 until 23:01	Taurus
2026	Mar	30	00:00 PDT	11 days	05^h16^m02^s	+27°29'36"	10:08	17:34	01:00	19.9	20:10 until 22:58	Taurus
2026	Mar	31	00:00 PDT	12 days	05^h16^m36^s	+27°29'59"	10:05	17:31	00:56	19.9	20:11 until 22:54	Taurus
2026	Apr	01	00:00 PDT	13 days	05^h17^m12^s	+27°30'21"	10:02	17:27	00:53	19.9	20:12 until 22:51	Taurus
2026	Apr	02	00:00 PDT	14 days	05^h17^m47^s	+27°30'45"	09:58	17:24	00:50	19.9	20:13 until 22:48	Taurus
2026	Apr	03	00:00 PDT	15 days	05^h18^m24^s	+27°31'08"	09:55	17:21	00:47	19.9	20:14 until 22:44	Taurus
2026	Apr	04	00:00 PDT	16 days	05^h19^m01^s	+27°31'32"	09:52	17:17	00:43	19.9	20:14 until 22:41	Taurus
2026	Apr	05	00:00 PDT	17 days	05^h19^m38^s	+27°31'56"	09:48	17:14	00:40	19.9	20:15 until 22:38	Taurus
2026	Apr	06	00:00 PDT	18 days	05^h20^m16^s	+27°32'21"	09:45	17:11	00:37	19.9	20:16 until 22:35	Taurus
2026	Apr	07	00:00 PDT	19 days	05^h20^m55^s	+27°32'45"	09:42	17:08	00:33	19.9	20:17 until 22:31	Taurus
2026	Apr	08	00:00 PDT	20 days	05^h21^m34^s	+27°33'10"	09:38	17:04	00:30	19.9	20:18 until 22:28	Taurus
2026	Apr	09	00:00 PDT	21 days	05^h22^m13^s	+27°33'36"	09:35	17:01	00:27	20.0	20:19 until 22:25	Taurus
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
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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