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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, 12:51:49
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, 07:00:00147,80713.2-2.2°256.4°0h 1.1m-12° 19'Cetus-4.4°
Sep 22, 07:30:00136,84813.0-9.2°260.2°23h 59.0m-13° 21'Cetus1.7°
Sep 22, 08:00:00125,88112.8-16.3°263.8°23h 56.6m-14° 34'Cetus7.7°
Sep 22, 08:30:00114,89712.6-23.7°267.2°23h 53.9m-16° 1'Aquarius13.7°
Sep 22, 09:00:00103,89012.4-31.3°270.4°23h 50.9m-17° 46'Aquarius19.6°
Sep 22, 09:30:0092,86012.2-39.3°273.2°23h 47.2m-19° 57'Aquarius25.3°
Sep 22, 10:00:0081,81712.0-47.7°275.6°23h 42.5m-22° 44'Aquarius30.9°
Sep 22, 10:30:0070,79011.7-56.7°276.7°23h 36.3m-26° 24'Sculptor36.2°
Sep 22, 11:00:0059,85211.3-66.5°274.2°23h 27.2m-31° 24'Sculptor41.1°
Sep 22, 11:30:0049,16311.0-76.7°255.6°23h 12.5m-38° 36'Grus45.4°
Sep 22, 12:00:0039,10610.6-77.0°184.7°22h 42.9m-49° 24'Grus49.1°
Sep 22, 12:30:0030,62010.2-56.9°158.5°21h 13.6m-64° 56'Pavo51.8°
Sep 22, 13:00:0025,84710.2-25.0°158.2°15h 55.6m-68° 10'Triangulum Australe53.4°
Sep 22, 13:30:0027,34510.99.3°165.8°13h 23.2m-42° 25'Centaurus53.7°
Sep 22, 14:00:0034,36212.233.0°178.9°12h 40.8m-20° 33'Corvus52.7°
Sep 22, 14:30:0044,21313.745.2°196.1°12h 21.4m-7° 6'Virgo50.4°
Sep 22, 15:00:0055,30515.549.5°214.7°12h 10.1m1° 13'Virgo47.2°
Sep 22, 15:30:0066,97515.048.9°231.3°12h 2.7m6° 40'Virgo43.1°
Sep 22, 16:00:0078,93914.845.6°244.4°11h 57.6m10° 28'Leo38.4°
Sep 22, 16:30:0091,06714.941.0°254.6°11h 53.8m13° 15'Leo33.3°
Sep 22, 17:00:00103,28915.035.8°262.7°11h 51.1m15° 22'Leo27.9°
Sep 22, 17:30:00115,56615.130.2°269.4°11h 49.0m17° 1'Leo22.2°
Sep 22, 18:00:00127,87115.224.5°275.3°11h 47.4m18° 21'Leo16.4°
Sep 22, 18:30:00140,18715.418.9°280.5°11h 46.3m19° 26'Leo10.4°
Sep 22, 19:00:00152,49815.513.3°285.5°11h 45.4m20° 21'Leo4.4°
 

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