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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, 09:51:45
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, 04:00:00145,34113.120.3°239.5°0h 2.1m-12° 23'Cetus-27.2°
Sep 22, 04:30:00134,31913.013.5°244.1°23h 59.5m-13° 27'Cetus-21.2°
Sep 22, 05:00:00123,34012.86.4°248.1°23h 56.5m-14° 43'Cetus-15.0°
Sep 22, 05:30:00112,39712.6-1.1°251.5°23h 53.1m-16° 12'Aquarius-8.8°
Sep 22, 06:00:00101,48612.4-8.9°254.4°23h 49.0m-18° 1'Aquarius-2.5°
Sep 22, 06:30:0090,60712.2-17.2°256.7°23h 44.2m-20° 15'Aquarius3.8°
Sep 22, 07:00:0079,77311.9-26.0°258.2°23h 38.0m-23° 6'Aquarius10.1°
Sep 22, 07:30:0069,01711.6-35.4°258.5°23h 29.8m-26° 49'Sculptor16.3°
Sep 22, 08:00:0058,41911.3-45.7°256.2°23h 17.8m-31° 53'Sculptor22.5°
Sep 22, 08:30:0048,15310.9-56.8°247.5°22h 58.5m-39° 3'Grus28.5°
Sep 22, 09:00:0038,62310.6-65.9°219.4°22h 20.1m-49° 29'Grus34.3°
Sep 22, 09:30:0030,76810.3-59.1°170.8°20h 34.3m-62° 57'Pavo39.8°
Sep 22, 10:00:0026,54910.3-31.3°148.1°16h 8.7m-62° 59'Triangulum Australe44.9°
Sep 22, 10:30:0028,10611.02.4°142.6°13h 46.8m-40° 6'Centaurus49.4°
Sep 22, 11:00:0034,75312.128.8°144.3°12h 58.2m-19° 43'Virgo53.2°
Sep 22, 11:30:0044,15013.546.4°151.4°12h 34.5m-6° 39'Virgo55.8°
Sep 22, 12:00:0054,82514.857.8°164.2°12h 20.3m1° 35'Virgo57.2°
Sep 22, 12:30:0066,12914.864.2°183.5°12h 10.8m7° 3'Virgo57.0°
Sep 22, 13:00:0077,77514.766.0°206.7°12h 4.0m10° 53'Virgo55.4°
Sep 22, 13:30:0089,62914.863.9°227.6°11h 58.9m13° 41'Coma Berenices52.5°
Sep 22, 14:00:00101,62014.959.5°243.0°11h 55.0m15° 49'Leo48.6°
Sep 22, 14:30:00113,70815.053.9°253.8°11h 52.0m17° 29'Leo43.9°
Sep 22, 15:00:00125,86715.247.9°261.8°11h 49.6m18° 49'Leo38.7°
Sep 22, 15:30:00138,07715.341.7°268.1°11h 47.7m19° 54'Leo33.1°
Sep 22, 16:00:00150,32515.535.5°273.3°11h 46.2m20° 48'Leo27.3°
 

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