Ephemeris for 109P/Swift-Tuttle

by Dominic Ford

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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 109P/Swift-Tuttle
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 109P/Swift-Tuttle
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	Feb	13	00:00 PST	25 days	09^h39^m42^s	−19°41'17"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	13	03:00 PST	25 days	09^h39^m41^s	−19°41'14"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	13	06:00 PST	25 days	09^h39^m41^s	−19°41'10"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	13	09:00 PST	25 days	09^h39^m40^s	−19°41'07"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	13	12:00 PST	26 days	09^h39^m39^s	−19°41'03"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	13	15:00 PST	26 days	09^h39^m39^s	−19°41'00"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	13	18:00 PST	26 days	09^h39^m38^s	−19°40'57"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	13	21:00 PST	26 days	09^h39^m37^s	−19°40'53"	18:47	23:54	05:01	37.1	20:59 until 02:49	Hydra
2026	Feb	14	00:00 PST	26 days	09^h39^m36^s	−19°40'50"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	14	03:00 PST	26 days	09^h39^m36^s	−19°40'46"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	14	06:00 PST	26 days	09^h39^m35^s	−19°40'43"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	14	09:00 PST	26 days	09^h39^m34^s	−19°40'39"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	14	12:00 PST	27 days	09^h39^m33^s	−19°40'36"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	14	15:00 PST	27 days	09^h39^m33^s	−19°40'32"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	14	18:00 PST	27 days	09^h39^m32^s	−19°40'29"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	14	21:00 PST	27 days	09^h39^m31^s	−19°40'25"	18:43	23:50	04:57	37.1	20:55 until 02:45	Hydra
2026	Feb	15	00:00 PST	27 days	09^h39^m31^s	−19°40'22"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	15	03:00 PST	27 days	09^h39^m30^s	−19°40'18"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	15	06:00 PST	27 days	09^h39^m29^s	−19°40'15"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	15	09:00 PST	27 days	09^h39^m28^s	−19°40'11"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	15	12:00 PST	28 days	09^h39^m28^s	−19°40'07"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	15	15:00 PST	28 days	09^h39^m27^s	−19°40'04"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	15	18:00 PST	28 days	09^h39^m26^s	−19°40'00"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	15	21:00 PST	28 days	09^h39^m26^s	−19°39'57"	18:39	23:46	04:53	37.1	20:51 until 02:41	Hydra
2026	Feb	16	00:00 PST	28 days	09^h39^m25^s	−19°39'53"	18:35	23:42	04:49	37.1	20:47 until 02:37	Hydra
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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