Asteroid 1I/2017 U1 (Oumuamua)

Asteroid 1I/2017 U1 (Oumuamua) is currently in the constellation of Pegasus. The current Right Ascension of Asteroid 1I/2017 U1 (Oumuamua) is 23h 49m 55s and the Declination is +23° 17’ 23” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 1I/2017 U1 (Oumuamua) is 36.61 (JPL).

Summary of key facts about Asteroid 1I/2017 U1 (Oumuamua) [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

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Additional information about Asteroid 1I/2017 U1 (Oumuamua) available on TheSkyLive:

Available Resources

• Position and finder charts (see also Where is Asteroid 1I/2017 U1 (Oumuamua)?)
• Distance from Earth (see also How far is Asteroid 1I/2017 U1 (Oumuamua) from Earth?)
• Rise and set times (see also When does Asteroid 1I/2017 U1 (Oumuamua) rise and set?)
• Brightness (see also How bright is Asteroid 1I/2017 U1 (Oumuamua)?)
• Orbital elements. Detailed information about Asteroid 1I/2017 U1 (Oumuamua) orbital parameters.
• Interactive orbit visualization. 3d visualization showing the orbit of Asteroid 1I/2017 U1 (Oumuamua) with respect to the major Solar System objects.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Asteroid 1I/2017 U1 (Oumuamua) for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Asteroid 1I/2017 U1 (Oumuamua) in the sky from your location.
• Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Asteroid 1I/2017 U1 (Oumuamua) with your telescope or on your astrophotographies.

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.

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 3,994,331,469 kilometers, equivalent to 26.700457 Astronomical Units. Light takes 3 hours, 42 minutes and 3.6556 seconds to travel from Asteroid 1I/2017 U1 (Oumuamua) and arrive to us.

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.

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 0.161991 Astronomical Units, or 24,233,513 kilometers:

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 36.61.

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.

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

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):

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.

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!

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
2021 Dec 02	23h 50m 09s	+23° 25’ 05”	36.57	Pegasus
2021 Dec 03	23h 50m 08s	+23° 23’ 59”	36.58	Pegasus
2021 Dec 04	23h 50m 04s	+23° 22’ 54”	36.58	Pegasus
2021 Dec 05	23h 50m 03s	+23° 21’ 51”	36.59	Pegasus
2021 Dec 06	23h 50m 00s	+23° 20’ 48”	36.59	Pegasus
2021 Dec 07	23h 49m 59s	+23° 19’ 45”	36.60	Pegasus
2021 Dec 08	23h 49m 56s	+23° 18’ 45”	36.60	Pegasus
2021 Dec 09	23h 49m 55s	+23° 17’ 44”	36.61	Pegasus
2021 Dec 10	23h 49m 54s	+23° 16’ 44”	36.61	Pegasus
2021 Dec 11	23h 49m 53s	+23° 15’ 44”	36.62	Pegasus
2021 Dec 12	23h 49m 51s	+23° 14’ 47”	36.62	Pegasus
2021 Dec 13	23h 49m 50s	+23° 13’ 49”	36.62	Pegasus
2021 Dec 14	23h 49m 50s	+23° 12’ 52”	36.63	Pegasus
2021 Dec 15	23h 49m 50s	+23° 11’ 57”	36.63	Pegasus