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 Cambridge (latitude 42.38°; longitude -71.11°) and expressed in Cambridge 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
2026	Aug	10	00:00 EDT	26 days	22^h50^m44^s	−42°51'01"	00:03	02:20	04:36	27.6	Not observable	Grus
2026	Aug	11	00:00 EDT	27 days	22^h50^m22^s	−42°52'51"	23:59	02:15	04:31	27.6	Not observable	Grus
2026	Aug	12	00:00 EDT	28 days	22^h50^m00^s	−42°54'40"	23:55	02:11	04:27	27.6	Not observable	Grus
2026	Aug	13	00:00 EDT	00 days	22^h49^m38^s	−42°56'26"	23:51	02:07	04:22	27.6	Not observable	Grus
2026	Aug	14	00:00 EDT	01 days	22^h49^m16^s	−42°58'10"	23:47	02:02	04:17	27.6	Not observable	Grus
2026	Aug	15	00:00 EDT	02 days	22^h48^m54^s	−42°59'51"	23:44	01:58	04:13	27.6	Not observable	Grus
2026	Aug	16	00:00 EDT	03 days	22^h48^m31^s	−43°01'29"	23:40	01:54	04:08	27.6	Not observable	Grus
2026	Aug	17	00:00 EDT	04 days	22^h48^m09^s	−43°03'05"	23:36	01:50	04:04	27.6	Not observable	Grus
2026	Aug	18	00:00 EDT	05 days	22^h47^m46^s	−43°04'39"	23:32	01:45	03:59	27.6	Not observable	Grus
2026	Aug	19	00:00 EDT	06 days	22^h47^m24^s	−43°06'10"	23:28	01:41	03:54	27.6	Not observable	Grus
2026	Aug	20	00:00 EDT	07 days	22^h47^m01^s	−43°07'38"	23:24	01:37	03:50	27.6	Not observable	Grus
2026	Aug	21	00:00 EDT	08 days	22^h46^m38^s	−43°09'03"	23:20	01:32	03:45	27.6	Not observable	Grus
2026	Aug	22	00:00 EDT	09 days	22^h46^m15^s	−43°10'25"	23:16	01:28	03:41	27.6	Not observable	Grus
2026	Aug	23	00:00 EDT	10 days	22^h45^m52^s	−43°11'45"	23:11	01:24	03:36	27.6	Not observable	Grus
2026	Aug	24	00:00 EDT	11 days	22^h45^m29^s	−43°13'01"	23:07	01:19	03:31	27.6	Not observable	Grus
2026	Aug	25	00:00 EDT	12 days	22^h45^m06^s	−43°14'15"	23:03	01:15	03:27	27.6	Not observable	Grus
2026	Aug	26	00:00 EDT	13 days	22^h44^m42^s	−43°15'26"	22:59	01:11	03:22	27.6	Not observable	Grus
2026	Aug	27	00:00 EDT	14 days	22^h44^m19^s	−43°16'34"	22:55	01:06	03:18	27.6	Not observable	Grus
2026	Aug	28	00:00 EDT	15 days	22^h43^m56^s	−43°17'39"	22:51	01:02	03:13	27.6	Not observable	Grus
2026	Aug	29	00:00 EDT	16 days	22^h43^m33^s	−43°18'41"	22:47	00:58	03:09	27.6	Not observable	Grus
2026	Aug	30	00:00 EDT	17 days	22^h43^m09^s	−43°19'40"	22:43	00:53	03:04	27.6	Not observable	Grus
2026	Aug	31	00:00 EDT	18 days	22^h42^m46^s	−43°20'36"	22:39	00:49	03:00	27.6	Not observable	Grus
2026	Sep	01	00:00 EDT	19 days	22^h42^m23^s	−43°21'29"	22:35	00:45	02:55	27.7	Not observable	Grus
2026	Sep	02	00:00 EDT	20 days	22^h41^m59^s	−43°22'18"	22:31	00:41	02:51	27.7	Not observable	Grus
2026	Sep	03	00:00 EDT	21 days	22^h41^m36^s	−43°23'05"	22:26	00:36	02:46	27.7	Not observable	Grus
All times computed for Cambridge (latitude 42.38; longitude -71.11) and expressed in Cambridge time. All positions are in J2000.0 coordinates. Ephemeris by Dominic Ford – https://in-the-sky.org/ephemeris.php

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