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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, 09:51:45
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, 04:00:00145,17413.121.9°238.6°0h 2.2m-12° 23'Cetus-28.8°
Sep 22, 04:30:00134,14513.015.2°243.2°23h 59.5m-13° 27'Cetus-22.8°
Sep 22, 05:00:00123,16212.88.0°247.2°23h 56.5m-14° 42'Cetus-16.6°
Sep 22, 05:30:00112,21812.60.5°250.6°23h 53.0m-16° 11'Aquarius-10.3°
Sep 22, 06:00:00101,31012.4-7.3°253.4°23h 49.0m-18° 0'Aquarius-4.0°
Sep 22, 06:30:0090,43712.2-15.6°255.7°23h 44.0m-20° 14'Aquarius2.4°
Sep 22, 07:00:0079,61311.9-24.4°257.2°23h 37.7m-23° 5'Aquarius8.7°
Sep 22, 07:30:0068,87211.6-33.9°257.4°23h 29.4m-26° 49'Sculptor15.0°
Sep 22, 08:00:0058,29211.3-44.2°255.0°23h 17.3m-31° 53'Sculptor21.3°
Sep 22, 08:30:0048,05110.9-55.4°246.4°22h 57.6m-39° 2'Grus27.4°
Sep 22, 09:00:0038,55210.6-64.6°219.6°22h 18.6m-49° 26'Grus33.3°
Sep 22, 09:30:0030,73710.3-58.7°171.8°20h 31.8m-62° 46'Pavo38.9°
Sep 22, 10:00:0026,56210.3-31.4°147.7°16h 9.2m-62° 36'Triangulum Australe44.2°
Sep 22, 10:30:0028,14111.02.1°141.3°13h 48.2m-39° 51'Centaurus49.0°
Sep 22, 11:00:0034,78112.128.5°142.2°12h 59.3m-19° 34'Virgo53.0°
Sep 22, 11:30:0044,15913.546.3°148.4°12h 35.4m-6° 34'Virgo56.0°
Sep 22, 12:00:0054,81214.758.1°160.3°12h 21.0m1° 39'Virgo57.7°
Sep 22, 12:30:0066,09414.865.1°179.2°12h 11.4m7° 7'Virgo57.9°
Sep 22, 13:00:0077,72114.767.3°203.3°12h 4.5m10° 57'Virgo56.6°
Sep 22, 13:30:0089,55714.865.5°225.6°11h 59.3m13° 45'Coma Berenices53.9°
Sep 22, 14:00:00101,53214.961.2°242.0°11h 55.3m15° 52'Leo50.1°
Sep 22, 14:30:00113,60715.055.6°253.4°11h 52.2m17° 32'Leo45.5°
Sep 22, 15:00:00125,75515.249.5°261.5°11h 49.7m18° 52'Leo40.3°
Sep 22, 15:30:00137,95815.343.2°267.8°11h 47.8m19° 57'Leo34.7°
Sep 22, 16:00:00150,20015.536.9°273.1°11h 46.2m20° 51'Leo28.9°
 

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