Ephemeris for C/2021 P4 (ATLAS)

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.

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Ephemeris for C/2021 P4 (ATLAS)
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 C/2021 P4 (ATLAS)
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
2025	Dec	25	00:00 PST	05 days	22^h17^m51^s	−43°09'41"	12:23	15:51	19:18	26.9	Not observable	Grus
2025	Dec	26	00:00 PST	06 days	22^h18^m06^s	−43°06'06"	12:19	15:47	19:15	26.9	Not observable	Grus
2025	Dec	27	00:00 PST	07 days	22^h18^m21^s	−43°02'30"	12:15	15:43	19:11	26.9	Not observable	Grus
2025	Dec	28	00:00 PST	08 days	22^h18^m36^s	−42°58'56"	12:11	15:40	19:08	26.9	Not observable	Grus
2025	Dec	29	00:00 PST	09 days	22^h18^m52^s	−42°55'22"	12:07	15:36	19:05	26.9	Not observable	Grus
2025	Dec	30	00:00 PST	10 days	22^h19^m08^s	−42°51'49"	12:03	15:32	19:02	26.9	Not observable	Grus
2025	Dec	31	00:00 PST	11 days	22^h19^m24^s	−42°48'16"	11:59	15:29	18:58	27.0	Not observable	Grus
2026	Jan	01	00:00 PST	12 days	22^h19^m41^s	−42°44'45"	11:55	15:25	18:55	27.0	Not observable	Grus
2026	Jan	02	00:00 PST	13 days	22^h19^m58^s	−42°41'14"	11:51	15:21	18:52	27.0	Not observable	Grus
2026	Jan	03	00:00 PST	14 days	22^h20^m15^s	−42°37'44"	11:47	15:18	18:48	27.0	Not observable	Grus
2026	Jan	04	00:00 PST	15 days	22^h20^m32^s	−42°34'15"	11:43	15:14	18:45	27.0	Not observable	Grus
2026	Jan	05	00:00 PST	16 days	22^h20^m50^s	−42°30'47"	11:39	15:10	18:42	27.0	Not observable	Grus
2026	Jan	06	00:00 PST	17 days	22^h21^m07^s	−42°27'20"	11:35	15:07	18:39	27.0	Not observable	Grus
2026	Jan	07	00:00 PST	18 days	22^h21^m25^s	−42°23'54"	11:31	15:03	18:35	27.0	Not observable	Grus
2026	Jan	08	00:00 PST	19 days	22^h21^m44^s	−42°20'29"	11:27	14:59	18:32	27.0	Not observable	Grus
2026	Jan	09	00:00 PST	20 days	22^h22^m02^s	−42°17'05"	11:23	14:56	18:29	27.0	Not observable	Grus
2026	Jan	10	00:00 PST	21 days	22^h22^m21^s	−42°13'42"	11:19	14:52	18:25	27.0	Not observable	Grus
2026	Jan	11	00:00 PST	22 days	22^h22^m40^s	−42°10'21"	11:15	14:49	18:22	27.0	Not observable	Grus
2026	Jan	12	00:00 PST	23 days	22^h22^m59^s	−42°07'00"	11:11	14:45	18:19	27.0	Not observable	Grus
2026	Jan	13	00:00 PST	24 days	22^h23^m19^s	−42°03'41"	11:07	14:41	18:16	27.0	Not observable	Grus
2026	Jan	14	00:00 PST	25 days	22^h23^m38^s	−42°00'22"	11:03	14:38	18:12	27.0	Not observable	Grus
2026	Jan	15	00:00 PST	26 days	22^h23^m58^s	−41°57'05"	10:59	14:34	18:09	27.0	Not observable	Grus
2026	Jan	16	00:00 PST	27 days	22^h24^m18^s	−41°53'50"	10:55	14:31	18:06	27.0	Not observable	Grus
2026	Jan	17	00:00 PST	28 days	22^h24^m38^s	−41°50'35"	10:51	14:27	18:03	27.1	Not observable	Grus
2026	Jan	18	00:00 PST	29 days	22^h24^m58^s	−41°47'22"	10:47	14:23	17:59	27.1	Not observable	Grus
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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