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🌎 Location: Greenwich, United Kingdom [change]

Asteroid A/2017 U7

Asteroid A/2017 U7 is currently in the constellation of Sagittarius. The current Right Ascension of Asteroid A/2017 U7 is 18h 24m 28s and the Declination is -20° 06’ 32” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid A/2017 U7 is 17.62 (JPL).

Summary of key facts about Asteroid A/2017 U7 [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]:

18h 24m 28s
-20° 06’ 32”

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 information about Asteroid A/2017 U7 available on TheSkyLive:

Available Resources

Asteroid A/2017 U7 Position and Finder Charts

Below we provide Asteroid A/2017 U7 finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid A/2017 U7 in Sagittarius on January, 28 2021
Field of view: 50x30 degrees
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Map showing Asteroid A/2017 U7 in Sagittarius on January, 28 2021
Field of view: 10x6 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, 60 arcmin wide, showing where Asteroid A/2017 U7 is right now. Click on the image to see a more detailed fullscreen tracker view.

A/2017 U7
RA: 18h 24m 28s
Dec: -20° 06’ 32”
Deep sky finder chart for Asteroid A/2017 U7
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid A/2017 U7?, a page that provides all the information needed to find Asteroid A/2017 U7 in the sky and additional links to sky charts.

Asteroid A/2017 U7 Distance from Earth

The distance of Asteroid A/2017 U7 from Earth is currently 1,206,432,474 kilometers, equivalent to 8.064503 Astronomical Units. Light takes 1 hours, 7 minutes and 4.2256 seconds to travel from Asteroid A/2017 U7 and arrive to us.

1 hours, 7 minutes and 4.2256 seconds

The following chart shows the distance of Asteroid A/2017 U7 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 A/2017 U7 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 A/2017 U7 from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid A/2017 U7 to Earth

Between January 2013 and December 2100, the closest approach of Asteroid A/2017 U7 to Earth happens on Fri Aug 2 2019 at a distance of 5.492906 Astronomical Units, or 821,726,989 kilometers:

Fri Aug 2 2019

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

Asteroid A/2017 U7 brightness

The current visual magnitude of Asteroid A/2017 U7 is 17.62.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid A/2017 U7, 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 A/2017 U7 between January 2013 and December 2100

Asteroid A/2017 U7 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 A/2017 U7 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 110.1°
Max altitude: 18.4°
Azimuth: 249.9°

The rise and set times are defined as the time at which the upper limb of Asteroid A/2017 U7 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 A/2017 U7 Orbital Elements

The following table lists the orbital elements of Asteroid A/2017 U7 at epoch 05 August 2019 00:00 UTC (JD: 2458701.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00074117
Orbit inclination i 142.63535125°
Perihelion distance q 6.41728630 AU
960,012,369 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2019-Sep-11 05:59:40
2,458,737.7498 JD
Argument of perihelion peri 326.02943043205°
Longitude of the ascending node node 276.23223803452°
Mean anomaly M -4.4346422880937E-5°
Mean motion n 0.00000122°/day

Visualization of Asteroid A/2017 U7 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid A/2017 U7 with respect of the Sun and the orbits of the major planets. The position of Asteroid A/2017 U7 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 A/2017 U7
View Asteroid A/2017 U7 in the 3D Solar System Simulator

Asteroid A/2017 U7 15 Days Ephemeris

The following table lists the ephemerides of Asteroid A/2017 U7 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid A/2017 U7 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 21 18h 22m 41s -20° 24’ 55” 17.62 Sagittarius
2021 Jan 22 18h 22m 58s -20° 22’ 23” 17.62 Sagittarius
2021 Jan 23 18h 23m 12s -20° 19’ 51” 17.62 Sagittarius
2021 Jan 24 18h 23m 27s -20° 17’ 20” 17.62 Sagittarius
2021 Jan 25 18h 23m 43s -20° 14’ 47” 17.62 Sagittarius
2021 Jan 26 18h 23m 57s -20° 12’ 14” 17.62 Sagittarius
2021 Jan 27 18h 24m 11s -20° 09’ 41” 17.62 Sagittarius
2021 Jan 28 18h 24m 25s -20° 07’ 05” 17.62 Sagittarius
2021 Jan 29 18h 24m 38s -20° 04’ 32” 17.62 Sagittarius
2021 Jan 30 18h 24m 52s -20° 01’ 56” 17.62 Sagittarius
2021 Jan 31 18h 25m 05s -19° 59’ 21” 17.62 Sagittarius
2021 Feb 01 18h 25m 18s -19° 56’ 44” 17.62 Sagittarius
2021 Feb 02 18h 25m 31s -19° 54’ 07” 17.62 Sagittarius
2021 Feb 03 18h 25m 44s -19° 51’ 30” 17.62 Sagittarius