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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, 18:51:49
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, 13:00:00152,00013.2-43.2°2.7°0h 9.3m-12° 38'Cetus30.7°
Sep 22, 13:30:00140,31913.1-43.7°13.1°0h 8.8m-13° 44'Cetus30.0°
Sep 22, 14:00:00128,57612.9-43.8°23.6°0h 8.0m-15° 2'Cetus28.8°
Sep 22, 14:30:00116,78012.7-43.4°34.1°0h 7.2m-16° 37'Cetus27.0°
Sep 22, 15:00:00104,94512.5-42.7°44.6°0h 6.0m-18° 34'Cetus24.8°
Sep 22, 15:30:0093,09312.2-41.9°55.1°0h 4.4m-21° 1'Cetus22.2°
Sep 22, 16:00:0081,26512.0-41.1°65.9°0h 2.2m-24° 13'Cetus19.3°
Sep 22, 16:30:0069,53211.6-40.7°77.3°23h 58.9m-28° 30'Sculptor16.0°
Sep 22, 17:00:0058,03311.3-41.1°90.1°23h 53.7m-34° 31'Sculptor12.6°
Sep 22, 17:30:0047,06010.9-42.9°105.7°23h 44.1m-43° 28'Phoenix8.9°
Sep 22, 18:00:0037,26710.5-46.7°128.0°23h 21.4m-57° 23'Tucana5.2°
Sep 22, 18:30:0030,12210.3-50.7°164.4°21h 17.5m-77° 44'Octans1.4°
Sep 22, 19:00:0028,05210.5-46.2°213.2°13h 33.3m-66° 19'Musca-2.5°
Sep 22, 19:30:0032,14011.4-33.9°249.6°12h 38.0m-38° 48'Centaurus-6.3°
Sep 22, 20:00:0040,41512.6-24.4°271.7°12h 20.9m-19° 54'Corvus-10.0°
Sep 22, 20:30:0050,68114.1-19.2°286.9°12h 12.2m-8° 7'Virgo-13.6°
Sep 22, 21:00:0061,82016.2-16.6°298.9°12h 6.9m-0° 29'Virgo-17.0°
Sep 22, 21:30:0073,34615.5-15.4°309.1°12h 3.4m4° 45'Virgo-20.1°
Sep 22, 22:00:0085,04115.2-14.9°318.3°12h 0.9m8° 33'Virgo-23.0°
Sep 22, 22:30:0096,79815.2-14.6°327.0°11h 59.1m11° 26'Virgo-25.5°
Sep 22, 23:00:00108,56015.2-14.4°335.2°11h 57.6m13° 41'Leo-27.5°
Sep 22, 23:30:00120,29815.3-14.0°343.3°11h 56.5m15° 29'Leo-29.1°
Sep 23, 00:00:00131,99415.4-13.4°351.0°11h 55.6m16° 59'Leo-30.2°
Sep 23, 00:30:00143,63715.5-12.5°358.6°11h 54.9m18° 14'Leo-30.7°
Sep 23, 01:00:00155,22415.6-11.3°6.0°11h 54.2m19° 19'Leo-30.6°
 

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