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Ephemeris for 3I/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.

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All times computed for South El Monte (latitude 34.05°; longitude -118.05°) and expressed in South El Monte time.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.
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
2026May2300:00 PDT06 days06h51m26s+20°21'01"08:3615:3722:3825.0Not observableGemini
2026May2400:00 PDT07 days06h51m42s+20°20'38"08:3215:3322:3425.1Not observableGemini
2026May2500:00 PDT08 days06h51m57s+20°20'14"08:2915:3022:3125.1Not observableGemini
2026May2600:00 PDT09 days06h52m13s+20°19'50"08:2515:2622:2725.1Not observableGemini
2026May2700:00 PDT10 days06h52m29s+20°19'25"08:2115:2222:2325.2Not observableGemini
2026May2800:00 PDT11 days06h52m45s+20°19'00"08:1815:1922:2025.2Not observableGemini
2026May2900:00 PDT12 days06h53m02s+20°18'34"08:1415:1522:1625.2Not observableGemini
2026May3000:00 PDT13 days06h53m18s+20°18'08"08:1015:1122:1225.3Not observableGemini
2026May3100:00 PDT14 days06h53m34s+20°17'42"08:0715:0822:0925.3Not observableGemini
2026Jun0100:00 PDT15 days06h53m51s+20°17'15"08:0315:0422:0525.3Not observableGemini
2026Jun0200:00 PDT16 days06h54m08s+20°16'48"07:5915:0022:0125.3Not observableGemini
2026Jun0300:00 PDT17 days06h54m24s+20°16'20"07:5614:5721:5725.4Not observableGemini
2026Jun0400:00 PDT18 days06h54m41s+20°15'52"07:5214:5321:5425.4Not observableGemini
2026Jun0500:00 PDT19 days06h54m58s+20°15'24"07:4914:4921:5025.4Not observableGemini
2026Jun0600:00 PDT20 days06h55m15s+20°14'55"07:4514:4621:4625.5Not observableGemini
2026Jun0700:00 PDT21 days06h55m32s+20°14'26"07:4114:4221:4325.5Not observableGemini
2026Jun0800:00 PDT22 days06h55m49s+20°13'56"07:3814:3821:3925.5Not observableGemini
2026Jun0900:00 PDT23 days06h56m06s+20°13'26"07:3414:3521:3525.6Not observableGemini
2026Jun1000:00 PDT24 days06h56m23s+20°12'55"07:3014:3121:3225.6Not observableGemini
2026Jun1100:00 PDT25 days06h56m40s+20°12'25"07:2714:2721:2825.6Not observableGemini
2026Jun1200:00 PDT26 days06h56m57s+20°11'54"07:2314:2421:2425.6Not observableGemini
2026Jun1300:00 PDT27 days06h57m15s+20°11'22"07:2014:2021:2125.7Not observableGemini
2026Jun1400:00 PDT28 days06h57m32s+20°10'50"07:1614:1721:1725.7Not observableGemini
2026Jun1500:00 PDT00 days06h57m49s+20°10'18"07:1214:1321:1325.7Not observableGemini
2026Jun1600:00 PDT01 days06h58m06s+20°09'46"07:0914:0921:1025.7Not observableGemini
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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South El Monte

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Longitude:
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34.05°N
118.05°W
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