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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:04  
clear_day Transit: 12:06  
SunsetSet: 18:09
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Dwarf Planets and Asteroids » 

Asteroid 1I/2017 U1 (Oumuamua)

Altitude: 26.9°   Azimuth: 85.2°   Direction: East

Asteroid 1I/2017 U1 (Oumuamua) is currently in the constellation of Pegasus, at a distance of 6,145,701,816 kilometers from Earth.

Finder chart of 1I/2017 U1 (Oumuamua) in Pegasus on March,19 2024
Map showing Asteroid 1I/2017 U1 (Oumuamua) in Pegasus on March, 19 2024. Field of view: 50x30 degrees
View interactive star map
The current Right Ascension of Asteroid 1I/2017 U1 (Oumuamua) is 23h 56m 01s and the Declination is +23° 34’ 14” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom edit_location_alt). The current magnitude of Asteroid 1I/2017 U1 (Oumuamua) is 38.28 (JPL).

23h 56m 01s
+23° 34’ 14”
Pegasus
38.28

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

Azimuth: 66.4°
Max altitude: 62.1°
Azimuth: 293.6°
  • 1I/2017 U1 (Oumuamua) is above the horizon from Greenwich, United Kingdom edit_location_alt.
  • Right now it is placed in the East direction at an altitude of 27° above the horizon.
  • 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.

Additional Resources

Asteroid 1I/2017 U1 (Oumuamua) Position and Finder Charts

Finder chart of 1I/2017 U1 (Oumuamua)
Map showing Asteroid 1I/2017 U1 (Oumuamua) in Pegasus on March, 19 2024
Field of view: 10x6 degrees
View fullscreen

Higher 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: 23h 56m 01s
Dec: +23° 34’ 14”
Deep sky finder chart for Asteroid 1I/2017 U1 (Oumuamua)
Field of view: 60x40 arcmins
View fullscreen

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.

Asteroid 1I/2017 U1 (Oumuamua) Distance from Earth

The distance of Asteroid 1I/2017 U1 (Oumuamua) from Earth is currently 6,145,701,816 kilometers, equivalent to 41.081479 Astronomical Units. Light takes 5 hours, 41 minutes and 39.8547 seconds to travel from Asteroid 1I/2017 U1 (Oumuamua) and arrive to us.

6,145,701,816
41.081479
5 hours, 41 minutes and 39.8547 seconds

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 of Asteroid 1I/2017 U1 (Oumuamua) to Earth

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.

Asteroid 1I/2017 U1 (Oumuamua) Brightness and 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

Asteroid 1I/2017 U1 (Oumuamua) 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

Visualization of Asteroid 1I/2017 U1 (Oumuamua) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 1I/2017 U1 (Oumuamua) with respect of the Sun and the orbits of the major planets. The position of Asteroid 1I/2017 U1 (Oumuamua) and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Asteroid 1I/2017 U1 (Oumuamua)
View Asteroid 1I/2017 U1 (Oumuamua) in the 3D Solar System Simulator

Asteroid 1I/2017 U1 (Oumuamua) 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. Click on each row of the table to locate Asteroid 1I/2017 U1 (Oumuamua) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2024 Mar 12 23h 55m 19s +23° 30’ 33” 38.27 Pegasus
2024 Mar 13 23h 55m 26s +23° 31’ 00” 38.27 Pegasus
2024 Mar 14 23h 55m 32s +23° 31’ 29” 38.27 Pegasus
2024 Mar 15 23h 55m 36s +23° 31’ 59” 38.27 Pegasus
2024 Mar 16 23h 55m 42s +23° 32’ 30” 38.28 Pegasus
2024 Mar 17 23h 55m 49s +23° 33’ 01” 38.28 Pegasus
2024 Mar 18 23h 55m 54s +23° 33’ 33” 38.28 Pegasus
2024 Mar 19 23h 55m 59s +23° 34’ 05” 38.28 Pegasus
2024 Mar 20 23h 56m 05s +23° 34’ 36” 38.28 Pegasus
2024 Mar 21 23h 56m 11s +23° 35’ 11” 38.28 Pegasus
2024 Mar 22 23h 56m 17s +23° 35’ 44” 38.28 Pegasus
2024 Mar 23 23h 56m 22s +23° 36’ 19” 38.28 Pegasus
2024 Mar 24 23h 56m 27s +23° 36’ 52” 38.28 Pegasus
2024 Mar 25 23h 56m 34s +23° 37’ 28” 38.28 Pegasus