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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:46 
Transit: 12:58 
Sunset: 21:11
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Dwarf Planets and Asteroids » 

Asteroid 1I/2017 U1 (Oumuamua)

Below the horizon.  Rise: 23:39 | Tran: 8:01 | Set: 16:20
Alt: -13.68°   Az: 354.88°   Direction: North

Asteroid 1I/2017 U1 (Oumuamua) is in the constellation of Pegasus, at a distance of 7,108,899,859.0 kilometers from Earth. The current Right Ascension is 00h 01m 29s and the Declination is +24° 41’ 21” (apparent coordinates). The magnitude of Asteroid 1I/2017 U1 (Oumuamua) is 39.00.

Finder Charts

Map showing Asteroid 1I/2017 U1 (Oumuamua) in Pegasus on June, 06 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Asteroid 1I/2017 U1 (Oumuamua) in Pegasus on June, 06 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 1I/2017 U1 (Oumuamua) is right now. Click on the image to see a more detailed fullscreen tracker view.

1I/2017 U1 (Oumuamua)
RA: 00h 00m 10s
Dec: +24° 32’ 51”
Deep sky finder chart for Asteroid 1I/2017 U1 (Oumuamua). Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Asteroid 1I/2017 U1 (Oumuamua)?, a page that provides all the information needed to find Asteroid 1I/2017 U1 (Oumuamua) in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

00h 01m 29s
+24° 41’ 21”
11h 38m 06s
11h 39m 35s

J2000

00h 00m 10s
+24° 32’ 51”

Additional Information

Pegasus
39.00

Rise and Set Times

Today's rise, transit and set times of Asteroid 1I/2017 U1 (Oumuamua) from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 65.3°
Max altitude: 63.2°
Azimuth: 294.7°
  • 1I/2017 U1 (Oumuamua) is below the horizon from Greenwich, UK.
  • Given its current magnitude, 1I/2017 U1 (Oumuamua) is visible only through long exposure photography.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Distance from Earth

The distance of Asteroid 1I/2017 U1 (Oumuamua) from Earth is currently 7,108,899,859.0 kilometers, equivalent to 47.5200604510 Astronomical Units. Light takes 6h 35m 12.737s to travel from Asteroid 1I/2017 U1 (Oumuamua) and arrive to us.

7,108,899,859.0
47.5200604510
6h 35m 12.737s

The following chart shows the distance of Asteroid 1I/2017 U1 (Oumuamua) from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Chart of the distance of Asteroid 1I/2017 U1 (Oumuamua) from Earth in Astronomical Units (au)

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 1I/2017 U1 (Oumuamua) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach

Between 1 January 2013 and 30 December 2100, the closest approach of Asteroid 1I/2017 U1 (Oumuamua) to Earth happens on Sun Oct 15 2017 at a distance of 0.161991 Astronomical Units, or 24,233,513 kilometers:

Sun Oct 15 2017
24,233,513
0.161991

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 1I/2017 U1 (Oumuamua), according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Chart of the magnitude of Asteroid 1I/2017 U1 (Oumuamua) as a function of time

Orbital Elements

The following table lists the orbital elements of Asteroid 1I/2017 U1 (Oumuamua) at epoch 22 November 2017 00:00 UTC (JD: 2458080.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.20113380
Orbit inclination i 122.74170628°
Perihelion distance q 0.25591158 AU
38,283,828 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2017-Sep-09 12:10:32
2,458,006.0073 JD
Argument of perihelion peri 241.81053603049°
Longitude of the ascending node node 24.596909555232°
Mean anomaly M 51.157619793825°
Mean motion n 0.68674695°/day
2h1>Orbit Visualization
Orbit Diagram of Asteroid 1I/2017 U1 (Oumuamua)
View Asteroid 1I/2017 U1 (Oumuamua) in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Asteroid 1I/2017 U1 (Oumuamua) computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2025 May 30 00h 01m 18s +24° 36’ 29” 38.99 Pegasus
2025 May 31 00h 01m 20s +24° 37’ 07” 38.99 Pegasus
2025 Jun 01 00h 01m 21s +24° 37’ 45” 38.99 Pegasus
2025 Jun 02 00h 01m 23s +24° 38’ 23” 38.99 Pegasus
2025 Jun 03 00h 01m 24s +24° 39’ 01” 38.99 Pegasus
2025 Jun 04 00h 01m 26s +24° 39’ 39” 39.00 Pegasus
2025 Jun 05 00h 01m 27s +24° 40’ 16” 39.00 Pegasus
2025 Jun 06 00h 01m 28s +24° 40’ 53” 39.00 Pegasus
2025 Jun 07 00h 01m 29s +24° 41’ 29” 39.00 Pegasus
2025 Jun 08 00h 01m 30s +24° 42’ 05” 39.00 Pegasus
2025 Jun 09 00h 01m 31s +24° 42’ 41” 39.00 Pegasus
2025 Jun 10 00h 01m 32s +24° 43’ 17” 39.00 Pegasus
2025 Jun 11 00h 01m 33s +24° 43’ 52” 39.00 Pegasus
2025 Jun 12 00h 01m 33s +24° 44’ 27” 39.01 Pegasus

Additional Resources on TheSkyLive