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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, 17:51:45
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, 12:00:00152,22513.2-46.3°331.5°0h 7.1m-12° 28'Cetus35.0°
Sep 22, 12:30:00140,71913.1-49.1°342.0°0h 6.4m-13° 32'Cetus36.3°
Sep 22, 13:00:00129,14012.9-51.4°353.3°0h 5.7m-14° 48'Cetus36.9°
Sep 22, 13:30:00117,49112.7-52.9°5.5°0h 4.7m-16° 20'Cetus36.8°
Sep 22, 14:00:00105,78112.5-53.8°18.3°0h 3.6m-18° 12'Cetus35.9°
Sep 22, 14:30:0094,02712.2-54.1°31.6°0h 2.0m-20° 34'Cetus34.3°
Sep 22, 15:00:0082,26112.0-53.9°45.4°23h 59.9m-23° 37'Cetus32.2°
Sep 22, 15:30:0070,54411.7-53.5°59.7°23h 56.9m-27° 42'Sculptor29.4°
Sep 22, 16:00:0058,99611.3-53.0°75.5°23h 52.1m-33° 26'Sculptor26.2°
Sep 22, 16:30:0047,86810.9-52.9°94.5°23h 43.6m-41° 56'Phoenix22.7°
Sep 22, 17:00:0037,74310.5-52.7°120.4°23h 24.2m-55° 15'Grus18.8°
Sep 22, 17:30:0029,98710.2-49.3°157.7°21h 51.3m-75° 39'Octans14.6°
Sep 22, 18:00:0027,14410.4-37.0°199.5°13h 37.6m-68° 46'Musca10.3°
Sep 22, 18:30:0030,80411.3-21.5°231.2°12h 34.5m-39° 53'Centaurus5.9°
Sep 22, 19:00:0039,05512.6-12.0°252.4°12h 16.9m-20° 1'Corvus1.4°
Sep 22, 19:30:0049,46014.1-8.0°267.4°12h 8.2m-7° 52'Virgo-3.1°
Sep 22, 20:00:0060,78517.0-7.1°279.2°12h 3.0m-0° 7'Virgo-7.5°
Sep 22, 20:30:0072,51215.4-7.7°289.1°11h 59.7m5° 7'Virgo-11.9°
Sep 22, 21:00:0084,41315.1-9.0°298.0°11h 57.4m8° 53'Virgo-16.1°
Sep 22, 21:30:0096,37715.1-10.6°306.3°11h 55.7m11° 43'Leo-20.2°
Sep 22, 22:00:00108,34615.2-12.2°314.2°11h 54.5m13° 55'Leo-24.0°
Sep 22, 22:30:00120,28915.3-13.7°322.0°11h 53.6m15° 41'Leo-27.4°
Sep 22, 23:00:00132,18615.4-15.0°329.6°11h 52.9m17° 8'Leo-30.5°
Sep 22, 23:30:00144,02415.5-15.8°337.2°11h 52.4m18° 21'Leo-33.0°
Sep 23, 00:00:00155,79715.6-16.3°344.8°11h 52.0m19° 24'Leo-34.9°
 

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