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OSIRIS-REx Flyby

On September 23 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 23, 00:51:45
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, 19:00:00146,27513.111.5°94.1°0h 17.6m-9° 36'Cetus-10.8°
Sep 22, 19:30:00133,79613.018.6°90.9°0h 16.8m-10° 32'Cetus-17.1°
Sep 22, 20:00:00121,31612.725.8°87.8°0h 15.6m-11° 40'Cetus-23.3°
Sep 22, 20:30:00108,85112.533.2°84.7°0h 14.0m-13° 3'Cetus-29.4°
Sep 22, 21:00:0096,41612.340.8°81.7°0h 11.7m-14° 47'Cetus-35.2°
Sep 22, 21:30:0084,03612.048.9°78.8°0h 8.5m-17° 0'Cetus-40.8°
Sep 22, 22:00:0071,74611.757.5°76.5°0h 3.9m-19° 58'Cetus-45.9°
Sep 22, 22:30:0059,61811.367.0°75.9°23h 57.0m-24° 6'Cetus-50.4°
Sep 22, 23:00:0047,79710.877.8°85.1°23h 45.5m-30° 13'Sculptor-54.2°
Sep 22, 23:30:0036,64810.382.0°174.7°23h 23.0m-39° 58'Grus-56.8°
Sep 23, 00:00:0027,1829.961.5°205.9°22h 21.4m-56° 6'Grus-58.0°
Sep 23, 00:30:0022,0709.726.2°203.2°17h 39.0m-68° 59'Apus-57.7°
Sep 23, 01:00:0024,48910.6-12.8°193.0°13h 59.8m-43° 29'Centaurus-55.9°
Sep 23, 01:30:0032,55911.9-37.6°177.1°13h 9.8m-20° 19'Virgo-52.8°
Sep 23, 02:00:0042,81913.2-48.7°156.8°12h 49.0m-6° 36'Virgo-48.7°
Sep 23, 02:30:0053,79514.1-51.3°136.2°12h 37.1m1° 47'Virgo-43.9°
Sep 23, 03:00:0064,99814.4-49.0°119.4°12h 29.3m7° 21'Virgo-38.6°
Sep 23, 03:30:0076,25314.5-44.4°107.0°12h 23.5m11° 17'Virgo-32.9°
Sep 23, 04:00:0087,49314.7-38.8°97.6°12h 19.0m14° 13'Coma Berenices-26.9°
Sep 23, 04:30:0098,69714.8-32.8°90.3°12h 15.2m16° 29'Coma Berenices-20.8°
Sep 23, 05:00:00109,85914.9-26.6°84.3°12h 12.0m18° 18'Coma Berenices-14.6°
Sep 23, 05:30:00120,98515.1-20.3°78.9°12h 9.2m19° 47'Coma Berenices-8.3°
Sep 23, 06:00:00132,08315.2-14.2°74.0°12h 6.6m21° 1'Coma Berenices-1.9°
Sep 23, 06:30:00143,16315.3-8.2°69.2°12h 4.3m22° 4'Coma Berenices4.5°
Sep 23, 07:00:00154,23815.4-2.4°64.4°12h 2.1m22° 57'Coma Berenices10.8°
 

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