Ephemeris for 123P/West-Hartley

by Dominic Ford

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You are welcome to reproduce the data below for non-profit purposes , providing you credit In-The-Sky.org.

It is also available in CSV (i.e. spreadsheet) and plain text format for easy pasting into other programs.

All times computed for South El Monte (latitude 34.05°; longitude -118.05°) and expressed in South El Monte time.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

Ephemeris for 123P/West-Hartley
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 123P/West-Hartley
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	Jun	14	00:00 PDT	28 days	07^h05^m08^s	+32°46'41"	06:37	14:24	22:11	15.3	Not observable	Gemini
2026	Jun	14	03:00 PDT	28 days	07^h05^m26^s	+32°46'18"	06:38	14:24	22:11	15.3	Not observable	Gemini
2026	Jun	14	06:00 PDT	28 days	07^h05^m44^s	+32°45'56"	06:38	14:25	22:11	15.3	Not observable	Gemini
2026	Jun	14	09:00 PDT	28 days	07^h06^m03^s	+32°45'35"	06:38	14:25	22:12	15.3	Not observable	Gemini
2026	Jun	14	12:00 PDT	28 days	07^h06^m21^s	+32°45'13"	06:39	14:25	22:12	15.3	Not observable	Gemini
2026	Jun	14	15:00 PDT	29 days	07^h06^m39^s	+32°44'50"	06:39	14:26	22:12	15.3	Not observable	Gemini
2026	Jun	14	18:00 PDT	29 days	07^h06^m56^s	+32°44'26"	06:39	14:26	22:13	15.3	Not observable	Gemini
2026	Jun	14	21:00 PDT	00 days	07^h07^m15^s	+32°44'02"	06:40	14:26	22:13	15.3	Not observable	Gemini
2026	Jun	15	00:00 PDT	00 days	07^h07^m33^s	+32°43'38"	06:36	14:23	22:09	15.3	Not observable	Gemini
2026	Jun	15	03:00 PDT	00 days	07^h07^m51^s	+32°43'15"	06:36	14:23	22:09	15.3	Not observable	Gemini
2026	Jun	15	06:00 PDT	00 days	07^h08^m09^s	+32°42'51"	06:37	14:23	22:10	15.3	Not observable	Gemini
2026	Jun	15	09:00 PDT	00 days	07^h08^m27^s	+32°42'29"	06:37	14:23	22:10	15.3	Not observable	Gemini
2026	Jun	15	12:00 PDT	00 days	07^h08^m45^s	+32°42'06"	06:37	14:24	22:10	15.3	Not observable	Gemini
2026	Jun	15	15:00 PDT	00 days	07^h09^m03^s	+32°41'42"	06:38	14:24	22:11	15.2	Not observable	Gemini
2026	Jun	15	18:00 PDT	00 days	07^h09^m21^s	+32°41'17"	06:38	14:24	22:11	15.2	Not observable	Gemini
2026	Jun	15	21:00 PDT	01 days	07^h09^m39^s	+32°40'52"	06:38	14:25	22:11	15.2	Not observable	Gemini
2026	Jun	16	00:00 PDT	01 days	07^h09^m58^s	+32°40'27"	06:35	14:21	22:07	15.2	Not observable	Gemini
2026	Jun	16	03:00 PDT	01 days	07^h10^m16^s	+32°40'03"	06:35	14:21	22:08	15.2	Not observable	Gemini
2026	Jun	16	06:00 PDT	01 days	07^h10^m34^s	+32°39'38"	06:35	14:22	22:08	15.2	Not observable	Gemini
2026	Jun	16	09:00 PDT	01 days	07^h10^m52^s	+32°39'15"	06:36	14:22	22:08	15.2	Not observable	Gemini
2026	Jun	16	12:00 PDT	01 days	07^h11^m10^s	+32°38'51"	06:36	14:22	22:09	15.2	Not observable	Gemini
2026	Jun	16	15:00 PDT	01 days	07^h11^m28^s	+32°38'26"	06:36	14:23	22:09	15.2	Not observable	Gemini
2026	Jun	16	18:00 PDT	01 days	07^h11^m46^s	+32°38'00"	06:37	14:23	22:09	15.2	Not observable	Gemini
2026	Jun	16	21:00 PDT	02 days	07^h12^m05^s	+32°37'34"	06:37	14:23	22:09	15.2	Not observable	Gemini
2026	Jun	17	00:00 PDT	02 days	07^h12^m23^s	+32°37'08"	06:33	14:20	22:06	15.2	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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