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	Jul	19	00:00 PDT	04 days	06^h53^m24^s	+27°36'55"	04:29	11:55	19:21	20.2	Not observable	Gemini
2026	Jul	20	00:00 PDT	05 days	06^h54^m21^s	+27°36'20"	04:26	11:52	19:18	20.2	Not observable	Gemini
2026	Jul	21	00:00 PDT	06 days	06^h55^m19^s	+27°35'44"	04:23	11:49	19:15	20.2	Not observable	Gemini
2026	Jul	22	00:00 PDT	07 days	06^h56^m17^s	+27°35'08"	04:20	11:46	19:12	20.2	Not observable	Gemini
2026	Jul	23	00:00 PDT	08 days	06^h57^m14^s	+27°34'32"	04:17	11:43	19:09	20.2	Not observable	Gemini
2026	Jul	24	00:00 PDT	09 days	06^h58^m12^s	+27°33'55"	04:14	11:40	19:06	20.2	Not observable	Gemini
2026	Jul	25	00:00 PDT	10 days	06^h59^m09^s	+27°33'17"	04:11	11:37	19:03	20.2	Not observable	Gemini
2026	Jul	26	00:00 PDT	11 days	07^h00^m06^s	+27°32'39"	04:08	11:34	19:00	20.2	Not observable	Gemini
2026	Jul	27	00:00 PDT	12 days	07^h01^m03^s	+27°32'01"	04:05	11:31	18:57	20.2	Not observable	Gemini
2026	Jul	28	00:00 PDT	13 days	07^h02^m00^s	+27°31'22"	04:02	11:28	18:54	20.2	Not observable	Gemini
2026	Jul	29	00:00 PDT	14 days	07^h02^m57^s	+27°30'43"	03:59	11:25	18:51	20.2	Not observable	Gemini
2026	Jul	30	00:00 PDT	15 days	07^h03^m53^s	+27°30'03"	03:56	11:22	18:48	20.2	Not observable	Gemini
2026	Jul	31	00:00 PDT	16 days	07^h04^m49^s	+27°29'24"	03:53	11:19	18:45	20.2	Not observable	Gemini
2026	Aug	01	00:00 PDT	17 days	07^h05^m46^s	+27°28'43"	03:50	11:16	18:42	20.2	Not observable	Gemini
2026	Aug	02	00:00 PDT	18 days	07^h06^m42^s	+27°28'03"	03:47	11:13	18:39	20.2	Not observable	Gemini
2026	Aug	03	00:00 PDT	19 days	07^h07^m37^s	+27°27'22"	03:44	11:10	18:36	20.2	Not observable	Gemini
2026	Aug	04	00:00 PDT	20 days	07^h08^m33^s	+27°26'41"	03:41	11:07	18:32	20.2	Not observable	Gemini
2026	Aug	05	00:00 PDT	21 days	07^h09^m28^s	+27°26'00"	03:38	11:04	18:29	20.2	Not observable	Gemini
2026	Aug	06	00:00 PDT	22 days	07^h10^m23^s	+27°25'18"	03:36	11:01	18:26	20.2	Not observable	Gemini
2026	Aug	07	00:00 PDT	23 days	07^h11^m18^s	+27°24'37"	03:33	10:58	18:23	20.2	Not observable	Gemini
2026	Aug	08	00:00 PDT	24 days	07^h12^m13^s	+27°23'55"	03:30	10:55	18:20	20.2	Not observable	Gemini
2026	Aug	09	00:00 PDT	25 days	07^h13^m08^s	+27°23'13"	03:27	10:52	18:17	20.2	Not observable	Gemini
2026	Aug	10	00:00 PDT	26 days	07^h14^m02^s	+27°22'31"	03:24	10:49	18:14	20.2	Not observable	Gemini
2026	Aug	11	00:00 PDT	27 days	07^h14^m56^s	+27°21'49"	03:21	10:46	18:11	20.2	Not observable	Gemini
2026	Aug	12	00:00 PDT	28 days	07^h15^m50^s	+27°21'07"	03:18	10:43	18:08	20.2	Not observable	Gemini
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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