Ephemeris for C/2021 P4 (ATLAS)

by Dominic Ford

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Interval

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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
2026	Apr	30	00:00 PDT	12 days	22^h59^m41^s	−39°22'08"	05:27	09:17	13:06	27.4	Not observable	Grus
2026	Apr	30	03:00 PDT	12 days	22^h59^m43^s	−39°22'14"	05:27	09:17	13:06	27.4	Not observable	Grus
2026	Apr	30	06:00 PDT	13 days	22^h59^m44^s	−39°22'20"	05:27	09:17	13:06	27.4	Not observable	Grus
2026	Apr	30	09:00 PDT	13 days	22^h59^m46^s	−39°22'26"	05:27	09:17	13:06	27.4	Not observable	Grus
2026	Apr	30	12:00 PDT	13 days	22^h59^m47^s	−39°22'31"	05:27	09:17	13:07	27.4	Not observable	Grus
2026	Apr	30	15:00 PDT	13 days	22^h59^m49^s	−39°22'37"	05:28	09:17	13:07	27.4	Not observable	Grus
2026	Apr	30	18:00 PDT	13 days	22^h59^m50^s	−39°22'42"	05:28	09:17	13:07	27.4	Not observable	Grus
2026	Apr	30	21:00 PDT	13 days	22^h59^m52^s	−39°22'48"	05:28	09:17	13:07	27.4	Not observable	Grus
2026	May	01	00:00 PDT	13 days	22^h59^m54^s	−39°22'54"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	01	03:00 PDT	13 days	22^h59^m55^s	−39°23'00"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	01	06:00 PDT	14 days	22^h59^m57^s	−39°23'07"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	01	09:00 PDT	14 days	22^h59^m58^s	−39°23'13"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	01	12:00 PDT	14 days	23^h00^m00^s	−39°23'19"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	01	15:00 PDT	14 days	23^h00^m01^s	−39°23'25"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	01	18:00 PDT	14 days	23^h00^m03^s	−39°23'31"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	01	21:00 PDT	14 days	23^h00^m04^s	−39°23'37"	05:24	09:13	13:03	27.4	Not observable	Grus
2026	May	02	00:00 PDT	14 days	23^h00^m06^s	−39°23'43"	05:20	09:09	12:59	27.4	Not observable	Grus
2026	May	02	03:00 PDT	14 days	23^h00^m07^s	−39°23'49"	05:20	09:09	12:59	27.4	Not observable	Grus
2026	May	02	06:00 PDT	15 days	23^h00^m09^s	−39°23'56"	05:20	09:09	12:59	27.4	Not observable	Grus
2026	May	02	09:00 PDT	15 days	23^h00^m10^s	−39°24'03"	05:20	09:10	12:59	27.4	Not observable	Grus
2026	May	02	12:00 PDT	15 days	23^h00^m12^s	−39°24'09"	05:20	09:10	12:59	27.4	Not observable	Grus
2026	May	02	15:00 PDT	15 days	23^h00^m13^s	−39°24'15"	05:20	09:10	12:59	27.4	Not observable	Grus
2026	May	02	18:00 PDT	15 days	23^h00^m14^s	−39°24'21"	05:20	09:10	12:59	27.4	Not observable	Grus
2026	May	02	21:00 PDT	15 days	23^h00^m16^s	−39°24'28"	05:20	09:10	12:59	27.4	Not observable	Grus
2026	May	03	00:00 PDT	15 days	23^h00^m17^s	−39°24'34"	05:16	09:06	12:55	27.4	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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