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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, 18:51:45
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, 13:00:00152,79713.2-54.0°1.8°0h 9.3m-12° 17'Cetus41.9°
Sep 22, 13:30:00141,09413.1-54.4°14.6°0h 8.9m-13° 21'Cetus41.0°
Sep 22, 14:00:00129,30812.9-53.8°27.4°0h 8.5m-14° 37'Cetus39.2°
Sep 22, 14:30:00117,44812.7-52.4°39.8°0h 7.9m-16° 9'Cetus36.8°
Sep 22, 15:00:00105,52612.5-50.3°51.5°0h 7.1m-18° 3'Cetus33.7°
Sep 22, 15:30:0093,56312.2-47.9°62.8°0h 6.0m-20° 26'Cetus30.1°
Sep 22, 16:00:0081,59712.0-45.3°73.7°0h 4.4m-23° 32'Cetus26.1°
Sep 22, 16:30:0069,69711.6-42.8°85.0°0h 1.9m-27° 44'Sculptor21.7°
Sep 22, 17:00:0057,99511.3-40.9°97.4°23h 57.9m-33° 40'Sculptor17.1°
Sep 22, 17:30:0046,77510.9-40.0°112.6°23h 50.5m-42° 33'Phoenix12.3°
Sep 22, 18:00:0036,69310.5-40.6°133.6°23h 32.7m-56° 40'Phoenix7.4°
Sep 22, 18:30:0029,29010.2-41.7°166.2°21h 49.4m-78° 26'Octans2.4°
Sep 22, 19:00:0027,24110.5-37.9°209.4°13h 13.6m-66° 18'Musca-2.6°
Sep 22, 19:30:0031,69511.4-29.6°244.9°12h 28.7m-37° 43'Centaurus-7.6°
Sep 22, 20:00:0040,37412.7-23.8°267.8°12h 14.9m-18° 48'Corvus-12.5°
Sep 22, 20:30:0050,95514.2-21.5°283.6°12h 7.9m-7° 13'Virgo-17.3°
Sep 22, 21:00:0062,33316.9-21.1°295.7°12h 3.7m0° 12'Virgo-21.9°
Sep 22, 21:30:0074,04515.4-21.6°306.1°12h 0.9m5° 18'Virgo-26.2°
Sep 22, 22:00:0085,88715.2-22.5°315.5°11h 59.0m8° 59'Virgo-30.2°
Sep 22, 22:30:0097,76115.2-23.4°324.3°11h 57.6m11° 46'Leo-33.8°
Sep 22, 23:00:00109,61615.2-24.0°332.9°11h 56.6m13° 57'Leo-36.9°
Sep 22, 23:30:00121,42415.3-24.3°341.3°11h 55.8m15° 42'Leo-39.3°
Sep 23, 00:00:00133,16915.4-24.2°349.6°11h 55.2m17° 10'Leo-40.9°
Sep 23, 00:30:00144,84215.5-23.5°357.6°11h 54.7m18° 24'Leo-41.8°
Sep 23, 01:00:00156,43915.6-22.3°5.4°11h 54.3m19° 27'Leo-41.8°
 

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