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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, 12:51:45
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, 07:00:00147,78213.2-2.2°256.4°0h 1.1m-12° 19'Cetus-4.4°
Sep 22, 07:30:00136,82213.0-9.2°260.2°23h 58.9m-13° 21'Cetus1.7°
Sep 22, 08:00:00125,85612.8-16.3°263.8°23h 56.6m-14° 34'Cetus7.7°
Sep 22, 08:30:00114,87212.6-23.7°267.2°23h 53.9m-16° 1'Aquarius13.7°
Sep 22, 09:00:00103,86512.4-31.3°270.3°23h 50.9m-17° 47'Aquarius19.6°
Sep 22, 09:30:0092,83412.2-39.3°273.2°23h 47.1m-19° 58'Aquarius25.3°
Sep 22, 10:00:0081,79112.0-47.7°275.6°23h 42.5m-22° 45'Aquarius30.9°
Sep 22, 10:30:0070,76511.7-56.7°276.7°23h 36.2m-26° 24'Sculptor36.2°
Sep 22, 11:00:0059,82711.3-66.5°274.2°23h 27.2m-31° 25'Sculptor41.1°
Sep 22, 11:30:0049,14011.0-76.7°255.5°23h 12.4m-38° 37'Grus45.4°
Sep 22, 12:00:0039,08510.6-76.9°184.6°22h 42.7m-49° 26'Grus49.1°
Sep 22, 12:30:0030,60510.2-56.9°158.5°21h 13.2m-64° 58'Pavo51.8°
Sep 22, 13:00:0025,84310.2-25.0°158.2°15h 55.0m-68° 7'Triangulum Australe53.4°
Sep 22, 13:30:0027,35610.99.3°165.8°13h 23.0m-42° 21'Centaurus53.7°
Sep 22, 14:00:0034,38212.233.1°178.9°12h 40.8m-20° 31'Corvus52.7°
Sep 22, 14:30:0044,23613.745.2°196.1°12h 21.4m-7° 4'Virgo50.4°
Sep 22, 15:00:0055,33015.549.5°214.7°12h 10.1m1° 14'Virgo47.2°
Sep 22, 15:30:0067,00014.948.9°231.3°12h 2.7m6° 41'Virgo43.1°
Sep 22, 16:00:0078,96514.845.6°244.4°11h 57.6m10° 29'Leo38.4°
Sep 22, 16:30:0091,09314.941.0°254.6°11h 53.8m13° 15'Leo33.3°
Sep 22, 17:00:00103,31515.035.8°262.7°11h 51.1m15° 22'Leo27.9°
Sep 22, 17:30:00115,59215.130.2°269.4°11h 49.0m17° 1'Leo22.2°
Sep 22, 18:00:00127,89715.224.5°275.3°11h 47.4m18° 21'Leo16.4°
Sep 22, 18:30:00140,21315.418.9°280.5°11h 46.3m19° 26'Leo10.4°
Sep 22, 19:00:00152,52415.513.3°285.5°11h 45.4m20° 21'Leo4.4°
 

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