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	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
2026	May	05	00:00 PDT	17 days	05^h42^m04^s	+27°44'17"	08:12	15:39	23:05	20.1	20:43 until 21:03	Taurus
2026	May	06	00:00 PDT	18 days	05^h42^m55^s	+27°44'38"	08:09	15:35	23:02	20.1	20:44 until 21:00	Taurus
2026	May	07	00:00 PDT	19 days	05^h43^m46^s	+27°44'59"	08:06	15:32	22:59	20.1	20:45 until 20:57	Taurus
2026	May	08	00:00 PDT	20 days	05^h44^m37^s	+27°45'19"	08:03	15:29	22:56	20.1	20:46 until 20:54	Taurus
2026	May	09	00:00 PDT	21 days	05^h45^m29^s	+27°45'38"	08:00	15:26	22:53	20.1	20:47 until 20:50	Taurus
2026	May	10	00:00 PDT	22 days	05^h46^m21^s	+27°45'58"	07:56	15:23	22:50	20.1	Not observable	Taurus
2026	May	11	00:00 PDT	23 days	05^h47^m14^s	+27°46'16"	07:53	15:20	22:47	20.1	Not observable	Taurus
2026	May	12	00:00 PDT	24 days	05^h48^m07^s	+27°46'34"	07:50	15:17	22:44	20.1	Not observable	Taurus
2026	May	13	00:00 PDT	25 days	05^h49^m00^s	+27°46'52"	07:47	15:14	22:41	20.1	Not observable	Taurus
2026	May	14	00:00 PDT	26 days	05^h49^m53^s	+27°47'08"	07:44	15:11	22:38	20.1	Not observable	Taurus
2026	May	15	00:00 PDT	27 days	05^h50^m47^s	+27°47'25"	07:41	15:08	22:35	20.1	Not observable	Taurus
2026	May	16	00:00 PDT	28 days	05^h51^m40^s	+27°47'40"	07:38	15:05	22:32	20.1	Not observable	Taurus
2026	May	17	00:00 PDT	00 days	05^h52^m35^s	+27°47'55"	07:35	15:02	22:29	20.1	Not observable	Taurus
2026	May	18	00:00 PDT	01 days	05^h53^m29^s	+27°48'10"	07:32	14:59	22:26	20.2	Not observable	Taurus
2026	May	19	00:00 PDT	02 days	05^h54^m23^s	+27°48'23"	07:29	14:56	22:23	20.2	Not observable	Taurus
2026	May	20	00:00 PDT	03 days	05^h55^m18^s	+27°48'36"	07:26	14:53	22:20	20.2	Not observable	Taurus
2026	May	21	00:00 PDT	04 days	05^h56^m13^s	+27°48'48"	07:23	14:50	22:17	20.2	Not observable	Taurus
2026	May	22	00:00 PDT	05 days	05^h57^m09^s	+27°49'00"	07:20	14:47	22:14	20.2	Not observable	Taurus
2026	May	23	00:00 PDT	06 days	05^h58^m04^s	+27°49'11"	07:17	14:44	22:11	20.2	Not observable	Taurus
2026	May	24	00:00 PDT	07 days	05^h59^m00^s	+27°49'21"	07:14	14:41	22:08	20.2	Not observable	Taurus
2026	May	25	00:00 PDT	08 days	05^h59^m55^s	+27°49'30"	07:11	14:38	22:05	20.2	Not observable	Taurus
2026	May	26	00:00 PDT	09 days	06^h00^m51^s	+27°49'39"	07:08	14:35	22:02	20.2	Not observable	Taurus
2026	May	27	00:00 PDT	10 days	06^h01^m48^s	+27°49'47"	07:05	14:32	21:59	20.2	Not observable	Gemini
2026	May	28	00:00 PDT	11 days	06^h02^m44^s	+27°49'54"	07:02	14:29	21:56	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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