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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:45 
Transit: 13:02 
Sunset: 21:19
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Dwarf Planets and Asteroids » 

Asteroid A/2017 U7

Above the horizon.  Rise: 14:08 | Tran: 21:45 | Set: 5:27
Alt: 52.50°   Az: 217.16°   Direction: South

Asteroid A/2017 U7 is in the constellation of Bootes, at a distance of 2,085,376,211.0 kilometers from Earth. The current Right Ascension is 14h 58m 36s and the Declination is +18° 34’ 25” (apparent coordinates). The magnitude of asteroid A/2017 U7 is 21.29.

Finder Charts

The sky charts below show, at different resolutions, the position of asteroid A/2017 U7 in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of asteroid A/2017 U7 in the constellation of Bootes on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of asteroid A/2017 U7 in the constellation of Bootes on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of asteroid A/2017 U7 against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

A/2017 U7
RA: 14h 57m 26s
Dec: +18° 40’ 29”
Simplified high-resolution deep sky chart showing the current position of asteroid A/2017 U7. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

14h 58m 36s
+18° 34’ 25”
01h 31m 18s
16h 29m 55s

J2000

14h 57m 26s
+18° 40’ 29”

Additional Information

Bootes
21.29

Rise and Set Times

The following table lists today's rise, transit and set times of asteroid A/2017 U7 from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 71.4°
Max altitude: 57.1°
Azimuth: 288.6°

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.

Distance from Earth

The distance of asteroid A/2017 U7 from Earth is currently 2,085,376,211.0 kilometers, equivalent to 13.9398789651 Astronomical Units. Light takes 1h 55m 56.066s to travel from asteroid A/2017 U7 and arrive to us.

2,085,376,211.0
13.9398789651
1h 55m 56.066s

The following graph shows the distance of asteroid A/2017 U7 from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of asteroid A/2017 U7 from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of A/2017 U7 from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 2000 and December 31, 2099, the closest approach of asteroid A/2017 U7 to Earth happened on Friday 2 August 2019 at a distance of 5.492952 Astronomical Units, or 821,733,894 kilometers:

Friday 2 August 2019
821,733,894
5.492952

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

Light Curve

The following chart shows the light curve of asteroid A/2017 U7, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of asteroid A/2017 U7 as a function of time

Orbital Elements

The following table lists the orbital elements of asteroid A/2017 U7 at epoch January, 07 2020 00:00 UTC (JD: 2458856.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00164840
Orbit inclination i 142.63521868°
Perihelion distance q 6.41751019 AU
960,045,862 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp September 11, 2019
2,458,738.2221 JD
Argument of perihelion peri 326.06899422804°
Longitude of the ascending node node 276.23235254662°
Mean anomaly M 0.00047990051701852°
Mean motion n 0.00000406°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of asteroid A/2017 U7 relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

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. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
Jun 17 2025 15h 00m 43s +18° 37’ 06” 21.26 Bootes
Jun 18 2025 15h 00m 26s +18° 36’ 55” 21.27 Bootes
Jun 19 2025 15h 00m 09s +18° 36’ 40” 21.27 Bootes
Jun 20 2025 14h 59m 53s +18° 36’ 24” 21.27 Bootes
Jun 21 2025 14h 59m 37s +18° 36’ 05” 21.28 Bootes
Jun 22 2025 14h 59m 21s +18° 35’ 43” 21.28 Bootes
Jun 23 2025 14h 59m 06s +18° 35’ 19” 21.29 Bootes
Jun 24 2025 14h 58m 50s +18° 34’ 52” 21.29 Bootes
Jun 25 2025 14h 58m 35s +18° 34’ 23” 21.29 Bootes
Jun 26 2025 14h 58m 21s +18° 33’ 51” 21.30 Bootes
Jun 27 2025 14h 58m 06s +18° 33’ 17” 21.30 Bootes
Jun 28 2025 14h 57m 52s +18° 32’ 41” 21.30 Bootes
Jun 29 2025 14h 57m 38s +18° 32’ 01” 21.31 Bootes
Jun 30 2025 14h 57m 24s +18° 31’ 21” 21.31 Bootes

Additional Resources on TheSkyLive