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	04	03:00 PDT	16 days	05^h41^m19^s	+27°43'58"	08:15	15:42	23:08	20.1	20:42 until 21:06	Taurus
2026	May	04	06:00 PDT	17 days	05^h41^m26^s	+27°44'01"	08:15	15:42	23:08	20.1	20:42 until 21:06	Taurus
2026	May	04	09:00 PDT	17 days	05^h41^m32^s	+27°44'04"	08:15	15:42	23:09	20.1	20:42 until 21:06	Taurus
2026	May	04	12:00 PDT	17 days	05^h41^m38^s	+27°44'07"	08:15	15:42	23:09	20.1	20:42 until 21:06	Taurus
2026	May	04	15:00 PDT	17 days	05^h41^m45^s	+27°44'10"	08:16	15:42	23:09	20.1	20:42 until 21:06	Taurus
2026	May	04	18:00 PDT	17 days	05^h41^m51^s	+27°44'12"	08:16	15:42	23:09	20.1	20:42 until 21:06	Taurus
2026	May	04	21:00 PDT	17 days	05^h41^m57^s	+27°44'15"	08:16	15:42	23:09	20.1	20:42 until 21:07	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	05	03:00 PDT	17 days	05^h42^m10^s	+27°44'19"	08:12	15:39	23:05	20.1	20:43 until 21:03	Taurus
2026	May	05	06:00 PDT	18 days	05^h42^m16^s	+27°44'22"	08:12	15:39	23:05	20.1	20:43 until 21:03	Taurus
2026	May	05	09:00 PDT	18 days	05^h42^m23^s	+27°44'25"	08:12	15:39	23:05	20.1	20:43 until 21:03	Taurus
2026	May	05	12:00 PDT	18 days	05^h42^m29^s	+27°44'28"	08:12	15:39	23:06	20.1	20:43 until 21:03	Taurus
2026	May	05	15:00 PDT	18 days	05^h42^m36^s	+27°44'31"	08:12	15:39	23:06	20.1	20:43 until 21:03	Taurus
2026	May	05	18:00 PDT	18 days	05^h42^m42^s	+27°44'34"	08:13	15:39	23:06	20.1	20:43 until 21:03	Taurus
2026	May	05	21:00 PDT	18 days	05^h42^m48^s	+27°44'36"	08:13	15:39	23:06	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	06	03:00 PDT	18 days	05^h43^m01^s	+27°44'40"	08:09	15:36	23:02	20.1	20:44 until 21:00	Taurus
2026	May	06	06:00 PDT	19 days	05^h43^m08^s	+27°44'43"	08:09	15:36	23:02	20.1	20:44 until 21:00	Taurus
2026	May	06	09:00 PDT	19 days	05^h43^m14^s	+27°44'46"	08:09	15:36	23:02	20.1	20:44 until 21:00	Taurus
2026	May	06	12:00 PDT	19 days	05^h43^m20^s	+27°44'49"	08:09	15:36	23:02	20.1	20:44 until 21:00	Taurus
2026	May	06	15:00 PDT	19 days	05^h43^m27^s	+27°44'52"	08:09	15:36	23:03	20.1	20:44 until 21:00	Taurus
2026	May	06	18:00 PDT	19 days	05^h43^m33^s	+27°44'54"	08:09	15:36	23:03	20.1	20:44 until 21:00	Taurus
2026	May	06	21:00 PDT	19 days	05^h43^m39^s	+27°44'57"	08:10	15:36	23:03	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
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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