Ephemeris for C/2023 S3 (Lemmon)

by Dominic Ford

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All times computed for Cambridge (latitude 42.38°; longitude -71.11°) and expressed in Cambridge time.

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Ephemeris for C/2023 S3 (Lemmon)
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/2023 S3 (Lemmon)
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	11	00:00 EDT	23 days	12^h12^m18^s	+40°56'23"	12:01	21:37	07:13	42.6	21:12 until 04:06	Canes Venatici
2026	May	12	00:00 EDT	24 days	12^h11^m52^s	+40°54'52"	11:57	21:32	07:08	42.6	21:14 until 04:00	Canes Venatici
2026	May	13	00:00 EDT	25 days	12^h11^m26^s	+40°53'15"	11:53	21:28	07:04	42.6	21:15 until 03:55	Canes Venatici
2026	May	14	00:00 EDT	26 days	12^h11^m01^s	+40°51'34"	11:49	21:24	06:59	42.6	21:17 until 03:51	Canes Venatici
2026	May	15	00:00 EDT	27 days	12^h10^m36^s	+40°49'49"	11:45	21:19	06:54	42.6	21:18 until 03:47	Canes Venatici
2026	May	16	00:00 EDT	28 days	12^h10^m12^s	+40°47'58"	11:41	21:15	06:50	42.7	21:19 until 03:42	Canes Venatici
2026	May	17	00:00 EDT	00 days	12^h09^m49^s	+40°46'04"	11:37	21:11	06:45	42.7	21:21 until 03:38	Canes Venatici
2026	May	18	00:00 EDT	01 days	12^h09^m26^s	+40°44'05"	11:33	21:06	06:40	42.7	21:22 until 03:33	Canes Venatici
2026	May	19	00:00 EDT	02 days	12^h09^m04^s	+40°42'03"	11:29	21:02	06:36	42.7	21:24 until 03:29	Canes Venatici
2026	May	20	00:00 EDT	03 days	12^h08^m42^s	+40°39'56"	11:25	20:58	06:31	42.7	21:25 until 03:24	Canes Venatici
2026	May	21	00:00 EDT	04 days	12^h08^m21^s	+40°37'45"	11:21	20:54	06:26	42.7	21:26 until 03:20	Canes Venatici
2026	May	22	00:00 EDT	05 days	12^h08^m01^s	+40°35'30"	11:17	20:49	06:22	42.7	21:27 until 03:15	Canes Venatici
2026	May	23	00:00 EDT	06 days	12^h07^m41^s	+40°33'12"	11:13	20:45	06:17	42.8	21:29 until 03:11	Canes Venatici
2026	May	24	00:00 EDT	07 days	12^h07^m22^s	+40°30'50"	11:09	20:41	06:12	42.8	21:30 until 03:07	Canes Venatici
2026	May	25	00:00 EDT	08 days	12^h07^m03^s	+40°28'24"	11:05	20:37	06:08	42.8	21:31 until 03:02	Canes Venatici
2026	May	26	00:00 EDT	09 days	12^h06^m45^s	+40°25'55"	11:02	20:32	06:03	42.8	21:32 until 02:58	Canes Venatici
2026	May	27	00:00 EDT	10 days	12^h06^m28^s	+40°23'23"	10:58	20:28	05:58	42.8	21:34 until 02:53	Canes Venatici
2026	May	28	00:00 EDT	11 days	12^h06^m11^s	+40°20'48"	10:54	20:24	05:54	42.8	21:35 until 02:49	Ursa Major
2026	May	29	00:00 EDT	12 days	12^h05^m55^s	+40°18'09"	10:50	20:20	05:49	42.8	21:36 until 02:45	Ursa Major
2026	May	30	00:00 EDT	13 days	12^h05^m39^s	+40°15'28"	10:47	20:16	05:44	42.9	21:37 until 02:40	Ursa Major
2026	May	31	00:00 EDT	14 days	12^h05^m24^s	+40°12'43"	10:43	20:11	05:40	42.9	21:38 until 02:36	Ursa Major
2026	Jun	01	00:00 EDT	15 days	12^h05^m10^s	+40°09'55"	10:39	20:07	05:35	42.9	21:39 until 02:32	Ursa Major
2026	Jun	02	00:00 EDT	16 days	12^h04^m56^s	+40°07'05"	10:36	20:03	05:30	42.9	21:40 until 02:27	Ursa Major
2026	Jun	03	00:00 EDT	17 days	12^h04^m43^s	+40°04'12"	10:32	19:59	05:26	42.9	21:41 until 02:23	Ursa Major
2026	Jun	04	00:00 EDT	18 days	12^h04^m30^s	+40°01'17"	10:28	19:55	05:21	42.9	21:42 until 02:19	Ursa Major
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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