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OSIRIS-REx Flyby

On September 22 2017, the interplanetary probe OSIRIS-REx will fly past the Earth. The Earth will give it a "gravity assist" and put it on a trajectory to reach the asteroid Bennu. If you know where to look and live in the right part of the world, you will have a chance to see it through binoculars or a telescope.

Click on a table row to load a finder chart corresponding to that time, or alternatively, you can go straight to a finder chart for a time near closest approach by clicking here.

Flyby data
Time of closest approachSep 22, 10:51:45
Distance of closest approach23,596 km
Speed at closest approach8.520 km/s
Speed at infinity (rel. to Earth)6.229 km/s

Position Table (click on a row of the table to load a finder chart)

Time Distance (km) Brightness Altitude Azimuth Right ascension Declination Constellation Sun altitude
Sep 22, 05:00:00146,18913.212.2°231.0°0h 4.2m-12° 55'Cetus-22.2°
Sep 22, 05:30:00135,00913.07.1°237.2°0h 1.9m-14° 3'Cetus-18.1°
Sep 22, 06:00:00123,87012.81.6°243.0°23h 59.2m-15° 22'Cetus-13.7°
Sep 22, 06:30:00112,77012.6-4.4°248.5°23h 56.1m-16° 57'Aquarius-9.1°
Sep 22, 07:00:00101,71012.4-11.0°253.6°23h 52.3m-18° 52'Aquarius-4.5°
Sep 22, 07:30:0090,70012.2-18.1°258.4°23h 47.7m-21° 15'Aquarius0.2°
Sep 22, 08:00:0079,76211.9-25.9°262.9°23h 41.9m-24° 17'Aquarius4.9°
Sep 22, 08:30:0068,94511.6-34.7°266.7°23h 33.9m-28° 16'Sculptor9.6°
Sep 22, 09:00:0058,35011.3-44.9°269.5°23h 22.2m-33° 41'Sculptor14.1°
Sep 22, 09:30:0048,19011.0-57.4°269.3°23h 2.7m-41° 22'Grus18.5°
Sep 22, 10:00:0038,93110.6-72.5°254.7°22h 22.8m-52° 28'Grus22.7°
Sep 22, 10:30:0031,58210.3-74.3°167.1°20h 24.5m-66° 16'Pavo26.6°
Sep 22, 11:00:0028,00710.4-45.7°141.2°15h 42.7m-63° 57'Triangulum Australe30.1°
Sep 22, 11:30:0029,91411.1-13.6°140.8°13h 37.5m-40° 58'Centaurus33.1°
Sep 22, 12:00:0036,51512.210.9°145.9°12h 54.8m-21° 15'Corvus35.6°
Sep 22, 12:30:0045,72813.527.1°153.8°12h 33.6m-8° 20'Virgo37.4°
Sep 22, 13:00:0056,20614.837.7°163.9°12h 20.7m0° 0'Virgo38.6°
Sep 22, 13:30:0067,31915.044.4°175.9°12h 12.0m5° 38'Virgo38.9°
Sep 22, 14:00:0078,78114.948.1°189.1°12h 5.6m9° 38'Virgo38.5°
Sep 22, 14:30:0090,45314.949.5°202.7°12h 0.8m12° 35'Virgo37.3°
Sep 22, 15:00:00102,26015.049.1°215.8°11h 57.1m14° 50'Leo35.4°
Sep 22, 15:30:00114,16215.147.2°227.7°11h 54.2m16° 37'Leo32.8°
Sep 22, 16:00:00126,13015.244.4°238.2°11h 51.8m18° 3'Leo29.7°
Sep 22, 16:30:00138,14715.440.9°247.5°11h 49.9m19° 13'Leo26.2°
Sep 22, 17:00:00150,20015.536.9°255.7°11h 48.3m20° 12'Leo22.3°
 

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