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
2025	Dec	17	00:00 PST	27 days	05^h27^m22^s	+27°42'57"	16:04	23:30	06:57	19.2	18:06 until 04:55	Taurus
2025	Dec	18	00:00 PST	28 days	05^h26^m41^s	+27°43'08"	15:59	23:26	06:52	19.2	18:02 until 04:50	Taurus
2025	Dec	19	00:00 PST	29 days	05^h26^m00^s	+27°43'16"	15:55	23:21	06:48	19.2	17:57 until 04:45	Taurus
2025	Dec	20	00:00 PST	00 days	05^h25^m19^s	+27°43'23"	15:50	23:17	06:43	19.2	17:52 until 04:41	Taurus
2025	Dec	21	00:00 PST	01 days	05^h24^m38^s	+27°43'28"	15:45	23:12	06:38	19.2	17:50 until 04:36	Taurus
2025	Dec	22	00:00 PST	02 days	05^h23^m57^s	+27°43'31"	15:41	23:07	06:34	19.2	17:51 until 04:32	Taurus
2025	Dec	23	00:00 PST	03 days	05^h23^m17^s	+27°43'33"	15:36	23:03	06:29	19.2	17:51 until 04:27	Taurus
2025	Dec	24	00:00 PST	04 days	05^h22^m36^s	+27°43'32"	15:32	22:58	06:25	19.2	17:52 until 04:22	Taurus
2025	Dec	25	00:00 PST	05 days	05^h21^m56^s	+27°43'30"	15:27	22:54	06:20	19.2	17:52 until 04:18	Taurus
2025	Dec	26	00:00 PST	06 days	05^h21^m17^s	+27°43'26"	15:22	22:49	06:15	19.2	17:53 until 04:13	Taurus
2025	Dec	27	00:00 PST	07 days	05^h20^m38^s	+27°43'21"	15:18	22:44	06:11	19.2	17:54 until 04:09	Taurus
2025	Dec	28	00:00 PST	08 days	05^h19^m59^s	+27°43'14"	15:13	22:40	06:06	19.2	17:54 until 04:04	Taurus
2025	Dec	29	00:00 PST	09 days	05^h19^m20^s	+27°43'05"	15:09	22:35	06:02	19.2	17:55 until 03:59	Taurus
2025	Dec	30	00:00 PST	10 days	05^h18^m42^s	+27°42'55"	15:04	22:31	05:57	19.2	17:56 until 03:55	Taurus
2025	Dec	31	00:00 PST	11 days	05^h18^m05^s	+27°42'44"	15:00	22:26	05:53	19.2	17:56 until 03:50	Taurus
2026	Jan	01	00:00 PST	12 days	05^h17^m28^s	+27°42'31"	14:55	22:22	05:48	19.2	17:57 until 03:46	Taurus
2026	Jan	02	00:00 PST	13 days	05^h16^m51^s	+27°42'17"	14:50	22:17	05:43	19.2	17:58 until 03:41	Taurus
2026	Jan	03	00:00 PST	14 days	05^h16^m15^s	+27°42'01"	14:46	22:12	05:39	19.2	17:58 until 03:37	Taurus
2026	Jan	04	00:00 PST	15 days	05^h15^m40^s	+27°41'44"	14:41	22:08	05:34	19.3	17:59 until 03:32	Taurus
2026	Jan	05	00:00 PST	16 days	05^h15^m05^s	+27°41'26"	14:37	22:03	05:30	19.3	18:00 until 03:28	Taurus
2026	Jan	06	00:00 PST	17 days	05^h14^m30^s	+27°41'07"	14:33	21:59	05:25	19.3	18:01 until 03:23	Taurus
2026	Jan	07	00:00 PST	18 days	05^h13^m57^s	+27°40'47"	14:28	21:54	05:21	19.3	18:01 until 03:19	Taurus
2026	Jan	08	00:00 PST	19 days	05^h13^m24^s	+27°40'26"	14:24	21:50	05:16	19.3	18:02 until 03:14	Taurus
2026	Jan	09	00:00 PST	20 days	05^h12^m51^s	+27°40'05"	14:19	21:45	05:12	19.3	18:03 until 03:10	Taurus
2026	Jan	10	00:00 PST	21 days	05^h12^m20^s	+27°39'42"	14:15	21:41	05:07	19.3	18:04 until 03:05	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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