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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 Pegasus. The current Right Ascension is 23h 50m 51s and the Declination is +21° 29’ 09”.

23h 50m 51s
+21° 29’ 09”

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 full screen Online Planetarium)

Map showing Asteroid 1I/2017 U1 (Oumuamua) in Pegasus on January, 22 2020
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]

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

1I/2017 U1 (Oumuamua)
RA: 23h 50m 51s
Dec: +21° 29’ 09”
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 2,438,240,762 kilometers, equivalent to 16.298633 Astronomical Units. Light takes 2 hours, 15 minutes and 33.0957 seconds to travel from Asteroid 1I/2017 U1 (Oumuamua) and arrive to us.

2,438,240,762
16.298633
2 hours, 15 minutes and 33.0957 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
24,233,507
0.161991

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 34.48.

34.48

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: 68.5°
Max altitude: 60.0°
Azimuth: 291.5°
Asteroid 1I/2017 U1 (Oumuamua) is below 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, considering the effect of the atmospheric refraction. As the atmospheric 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
2020 Jan 15 23h 49m 59s +21° 31’ 42” 34.44 Pegasus
2020 Jan 16 23h 50m 04s +21° 31’ 14” 34.44 Pegasus
2020 Jan 17 23h 50m 12s +21° 30’ 48” 34.45 Pegasus
2020 Jan 18 23h 50m 20s +21° 30’ 25” 34.46 Pegasus
2020 Jan 19 23h 50m 26s +21° 30’ 03” 34.46 Pegasus
2020 Jan 20 23h 50m 35s +21° 29’ 44” 34.47 Pegasus
2020 Jan 21 23h 50m 41s +21° 29’ 26” 34.47 Pegasus
2020 Jan 22 23h 50m 49s +21° 29’ 11” 34.48 Pegasus
2020 Jan 23 23h 50m 57s +21° 28’ 58” 34.48 Pegasus
2020 Jan 24 23h 51m 06s +21° 28’ 45” 34.49 Pegasus
2020 Jan 25 23h 51m 15s +21° 28’ 36” 34.49 Pegasus
2020 Jan 26 23h 51m 24s +21° 28’ 28” 34.49 Pegasus
2020 Jan 27 23h 51m 33s +21° 28’ 23” 34.50 Pegasus
2020 Jan 28 23h 51m 42s +21° 28’ 19” 34.50 Pegasus