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	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
2026	Aug	13	00:00 PDT	00 days	07^h16^m44^s	+27°20'25"	03:15	10:40	18:05	20.2	Not observable	Gemini
2026	Aug	14	00:00 PDT	01 days	07^h17^m37^s	+27°19'43"	03:12	10:37	18:02	20.2	Not observable	Gemini
2026	Aug	15	00:00 PDT	02 days	07^h18^m30^s	+27°19'01"	03:09	10:34	17:59	20.2	Not observable	Gemini
2026	Aug	16	00:00 PDT	03 days	07^h19^m23^s	+27°18'19"	03:06	10:31	17:56	20.2	Not observable	Gemini
2026	Aug	17	00:00 PDT	04 days	07^h20^m15^s	+27°17'37"	03:03	10:28	17:52	20.2	05:04 until 05:08	Gemini
2026	Aug	18	00:00 PDT	05 days	07^h21^m08^s	+27°16'56"	03:00	10:24	17:49	20.2	05:01 until 05:09	Gemini
2026	Aug	19	00:00 PDT	06 days	07^h22^m00^s	+27°16'14"	02:57	10:21	17:46	20.2	04:58 until 05:10	Gemini
2026	Aug	20	00:00 PDT	07 days	07^h22^m51^s	+27°15'33"	02:53	10:18	17:43	20.2	04:55 until 05:11	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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