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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, 19:00:00145,86713.115.4°93.3°0h 17.9m-9° 50'Cetus-15.6°
Sep 22, 19:30:00133,37612.922.7°90.8°0h 17.0m-10° 48'Cetus-22.2°
Sep 22, 20:00:00120,89612.730.2°88.5°0h 15.7m-11° 57'Cetus-28.7°
Sep 22, 20:30:00108,44312.537.8°86.2°0h 13.9m-13° 22'Cetus-35.0°
Sep 22, 21:00:0096,03612.345.8°84.2°0h 11.5m-15° 9'Cetus-41.2°
Sep 22, 21:30:0083,69912.054.1°82.7°0h 8.0m-17° 26'Cetus-47.0°
Sep 22, 22:00:0071,47311.662.9°82.6°0h 3.1m-20° 28'Cetus-52.4°
Sep 22, 22:30:0059,43411.372.4°87.3°23h 55.6m-24° 43'Aquarius-57.1°
Sep 22, 23:00:0047,73910.881.3°120.2°23h 43.3m-30° 58'Sculptor-60.7°
Sep 22, 23:30:0036,77310.475.5°194.4°23h 19.2m-40° 50'Grus-62.9°
Sep 23, 00:00:0027,5719.953.8°206.5°22h 13.4m-56° 46'Tucana-63.2°
Sep 23, 00:30:0022,7259.819.1°202.2°17h 34.3m-68° 14'Apus-61.6°
Sep 23, 01:00:0025,12210.6-18.3°190.6°14h 4.5m-43° 42'Centaurus-58.5°
Sep 23, 01:30:0032,96511.9-41.8°172.2°13h 13.4m-20° 59'Virgo-54.1°
Sep 23, 02:00:0043,01013.1-51.2°148.7°12h 51.8m-7° 15'Virgo-48.9°
Sep 23, 02:30:0053,81614.0-51.6°126.8°12h 39.4m1° 15'Virgo-43.2°
Sep 23, 03:00:0064,88114.4-47.6°110.8°12h 31.1m6° 55'Virgo-37.2°
Sep 23, 03:30:0076,02014.5-41.8°99.7°12h 25.1m10° 56'Virgo-30.9°
Sep 23, 04:00:0087,16314.7-35.3°91.7°12h 20.3m13° 56'Coma Berenices-24.4°
Sep 23, 04:30:0098,28214.8-28.6°85.4°12h 16.3m16° 15'Coma Berenices-17.8°
Sep 23, 05:00:00109,37214.9-21.9°80.2°12h 12.9m18° 6'Coma Berenices-11.2°
Sep 23, 05:30:00120,43615.0-15.2°75.5°12h 9.9m19° 37'Coma Berenices-4.5°
Sep 23, 06:00:00131,48315.2-8.8°71.1°12h 7.2m20° 53'Coma Berenices2.2°
Sep 23, 06:30:00142,52415.3-2.4°66.7°12h 4.7m21° 57'Coma Berenices8.9°
Sep 23, 07:00:00153,57015.43.6°62.2°12h 2.4m22° 51'Coma Berenices15.6°
 

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