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Asteroid 1I/2017 U1 (Oumuamua)

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Asteroid 1I/2017 U1 (Oumuamua) Position

Asteroid 1I/2017 U1 (Oumuamua) is currently in the constellation of Andromeda. The current Right Ascension is 00h 14m 37s and the Declination is +25° 23’ 01”.

00h 14m 37s
+25° 23’ 01”

Simplified sky chart showing where Asteroid 1I/2017 U1 (Oumuamua) is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Asteroid 1I/2017 U1 (Oumuamua) in Andromeda on August, 22 2019
Field of view: 60x30 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Hihgher precision deep sky finder chart showing where Asteroid 1I/2017 U1 (Oumuamua) is right now (view fullscreen)

1I/2017 U1 (Oumuamua)
RA: 00h 14m 37s
Dec: +25° 23’ 01”
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

The distance of Asteroid 1I/2017 U1 (Oumuamua) from Earth is currently 1,905,452,383 kilometers, equivalent to 12.737162 Astronomical Units. Light takes 1 hours, 45 minutes and 55.9050 seconds to travel from Asteroid 1I/2017 U1 (Oumuamua) and arrive to us.

1 hours, 45 minutes and 55.9050 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.

Distance of Asteroid 1I/2017 U1 (Oumuamua) from Earth between January 2013 and December 2100

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 January 2013 and December 2100 the closest approach of Asteroid 1I/2017 U1 (Oumuamua) to Earth happens on Sun Oct 15 2017 at a distance of 0.16199099 Astronomical Units, or 24,233,507 kilometers:

Sun Oct 15 2017

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

Asteroid 1I/2017 U1 (Oumuamua) brightness

The current visual magnitude of Asteroid 1I/2017 U1 (Oumuamua) is 33.57.


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.

Predicted magnitude of Asteroid 1I/2017 U1 (Oumuamua) between January 2013 and December 2100

Asteroid 1I/2017 U1 (Oumuamua) rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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

Azimuth: 64.6°
Max altitude: 63.9°
Azimuth: 295.4°
Asteroid 1I/2017 U1 (Oumuamua) is above the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Asteroid 1I/2017 U1 (Oumuamua) touches the horizon, consideting the effect of the atmospheric refraction. As the atmoshpere conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

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
2019 Aug 15 00h 16m 33s +25° 24’ 26” 33.56 Andromeda
2019 Aug 16 00h 16m 18s +25° 24’ 23” 33.56 Andromeda
2019 Aug 17 00h 16m 01s +25° 24’ 15” 33.56 Andromeda
2019 Aug 18 00h 15m 46s +25° 24’ 06” 33.56 Andromeda
2019 Aug 19 00h 15m 29s +25° 23’ 54” 33.57 Andromeda
2019 Aug 20 00h 15m 12s +25° 23’ 39” 33.57 Andromeda
2019 Aug 21 00h 14m 56s +25° 23’ 22” 33.57 Andromeda
2019 Aug 22 00h 14m 39s +25° 23’ 03” 33.57 Andromeda
2019 Aug 23 00h 14m 21s +25° 22’ 40” 33.57 Andromeda
2019 Aug 24 00h 14m 03s +25° 22’ 14” 33.57 Andromeda
2019 Aug 25 00h 13m 46s +25° 21’ 47” 33.57 Andromeda
2019 Aug 26 00h 13m 28s +25° 21’ 15” 33.57 Andromeda
2019 Aug 27 00h 13m 11s +25° 20’ 43” 33.57 Andromeda
2019 Aug 28 00h 12m 53s +25° 20’ 08” 33.57 Andromeda