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Ephemeris for 3I/ATLAS

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 3I/ATLAS
DateTimeAge of
Moon		Right
Ascension		DeclinationRiseCulmSetApprox
Mag.		Observable
(hover mouse)		Constellation
Ephemeris for 3I/ATLAS
DateTimeAge of
Moon		Right
Ascension		DeclinationRiseCulmSetApprox
Mag.		Observable
(hover mouse)		Constellation
2025Aug2117:00 PDT28 days15h54m38s−15°35'37"13:2418:4400:03–20:34 until 21:59Libra
2025Aug2217:00 PDT29 days15h52m03s−15°29'08"13:1818:3723:57–20:32 until 21:53Libra
2025Aug2317:00 PDT00 days15h49m28s−15°22'35"13:1118:3123:51–20:31 until 21:47Libra
2025Aug2417:00 PDT01 days15h46m55s−15°15'59"13:0418:2423:45–20:29 until 21:41Libra
2025Aug2517:00 PDT02 days15h44m23s−15°09'19"12:5718:1823:39–20:28 until 21:35Libra
2025Aug2617:00 PDT03 days15h41m52s−15°02'37"12:5018:1123:32–20:27 until 21:29Libra
2025Aug2717:00 PDT04 days15h39m22s−14°55'52"12:4418:0523:26–20:25 until 21:23Libra
2025Aug2817:00 PDT05 days15h36m53s−14°49'04"12:3717:5923:20–20:24 until 21:17Libra
2025Aug2917:00 PDT06 days15h34m25s−14°42'14"12:3017:5223:14–20:22 until 21:12Libra
2025Aug3017:00 PDT07 days15h31m59s−14°35'22"12:2317:4623:08–20:21 until 21:06Libra
2025Aug3117:00 PDT08 days15h29m34s−14°28'28"12:1717:3923:02–20:19 until 21:00Libra
2025Sep0117:00 PDT08 days15h27m10s−14°21'32"12:1017:3322:56–20:18 until 20:54Libra
2025Sep0217:00 PDT09 days15h24m47s−14°14'34"12:0317:2722:50–20:16 until 20:48Libra
2025Sep0317:00 PDT10 days15h22m25s−14°07'35"11:5717:2122:44–20:15 until 20:43Libra
2025Sep0417:00 PDT11 days15h20m05s−14°00'34"11:5017:1422:38–20:13 until 20:37Libra
2025Sep0517:00 PDT12 days15h17m46s−13°53'33"11:4417:0822:32–20:12 until 20:31Libra
2025Sep0617:00 PDT13 days15h15m28s−13°46'30"11:3717:0222:27–20:11 until 20:25Libra
2025Sep0717:00 PDT15 days15h13m11s−13°39'26"11:3116:5622:21–20:09 until 20:20Libra
2025Sep0817:00 PDT16 days15h10m56s−13°32'21"11:2416:4922:15–20:08 until 20:14Libra
2025Sep0917:00 PDT17 days15h08m41s−13°25'15"11:1816:4322:09–20:06 until 20:08Libra
2025Sep1017:00 PDT18 days15h06m28s−13°18'08"11:1116:3722:03–Not observableLibra
2025Sep1117:00 PDT19 days15h04m16s−13°11'01"11:0516:3121:57–Not observableLibra
2025Sep1217:00 PDT20 days15h02m05s−13°03'54"10:5816:2521:52–Not observableLibra
2025Sep1317:00 PDT21 days14h59m55s−12°56'45"10:5216:1921:46–Not observableLibra
2025Sep1417:00 PDT22 days14h57m46s−12°49'36"10:4516:1321:40–Not observableLibra
All times computed for South El Monte (latitude 34.05; longitude -118.05) and expressed in South El Monte time.
Ephemeris by Dominic Ford – https://in-the-sky.org/ephemeris.php

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South El Monte

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Longitude:
Timezone:

34.05°N
118.05°W
PDT

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