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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, 17:51:49
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, 12:00:00152,25113.2-46.3°331.5°0h 7.1m-12° 28'Cetus35.0°
Sep 22, 12:30:00140,74513.1-49.1°342.0°0h 6.4m-13° 32'Cetus36.3°
Sep 22, 13:00:00129,16612.9-51.4°353.3°0h 5.7m-14° 48'Cetus36.9°
Sep 22, 13:30:00117,51712.7-52.9°5.5°0h 4.7m-16° 19'Cetus36.8°
Sep 22, 14:00:00105,80712.5-53.8°18.3°0h 3.6m-18° 12'Cetus35.9°
Sep 22, 14:30:0094,05312.2-54.1°31.6°0h 2.0m-20° 33'Cetus34.3°
Sep 22, 15:00:0082,28712.0-53.9°45.3°0h 0.0m-23° 36'Cetus32.2°
Sep 22, 15:30:0070,57011.7-53.5°59.7°23h 56.9m-27° 41'Sculptor29.4°
Sep 22, 16:00:0059,02011.3-53.0°75.5°23h 52.1m-33° 25'Sculptor26.2°
Sep 22, 16:30:0047,89110.9-52.9°94.5°23h 43.6m-41° 55'Phoenix22.7°
Sep 22, 17:00:0037,76310.5-52.7°120.4°23h 24.2m-55° 13'Grus18.8°
Sep 22, 17:30:0030,00010.2-49.3°157.6°21h 51.8m-75° 36'Octans14.6°
Sep 22, 18:00:0027,14310.4-37.0°199.5°13h 37.9m-68° 50'Musca10.3°
Sep 22, 18:30:0030,79011.3-21.5°231.2°12h 34.6m-39° 56'Centaurus5.9°
Sep 22, 19:00:0039,03412.6-12.0°252.4°12h 16.9m-20° 3'Corvus1.4°
Sep 22, 19:30:0049,43614.1-8.1°267.4°12h 8.2m-7° 53'Virgo-3.1°
Sep 22, 20:00:0060,76017.0-7.1°279.2°12h 3.1m-0° 8'Virgo-7.5°
Sep 22, 20:30:0072,48715.4-7.7°289.1°11h 59.7m5° 7'Virgo-11.9°
Sep 22, 21:00:0084,38715.1-9.0°298.0°11h 57.4m8° 53'Virgo-16.1°
Sep 22, 21:30:0096,35115.1-10.6°306.3°11h 55.7m11° 43'Leo-20.2°
Sep 22, 22:00:00108,32115.2-12.2°314.2°11h 54.5m13° 55'Leo-24.0°
Sep 22, 22:30:00120,26315.3-13.7°322.0°11h 53.6m15° 41'Leo-27.4°
Sep 22, 23:00:00132,16015.4-15.0°329.6°11h 52.9m17° 8'Leo-30.5°
Sep 22, 23:30:00143,99815.5-15.8°337.2°11h 52.4m18° 21'Leo-33.0°
Sep 23, 00:00:00155,77115.6-16.3°344.8°11h 52.0m19° 23'Leo-34.9°
 

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