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Location: Mount Lemmon
(32.4432°N, 110.7577°W)
Time: 17:21:42


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, 04:00:00145,26213.121.0°239.0°0h 2.2m-12° 23'Cetus-28.0°
Sep 22, 04:30:00134,23613.014.3°243.6°23h 59.5m-13° 27'Cetus-22.0°
Sep 22, 05:00:00123,25512.87.2°247.6°23h 56.5m-14° 43'Cetus-15.8°
Sep 22, 05:30:00112,31112.6-0.3°251.0°23h 53.1m-16° 12'Aquarius-9.6°
Sep 22, 06:00:00101,40012.4-8.2°253.9°23h 49.0m-18° 1'Aquarius-3.2°
Sep 22, 06:30:0090,52412.2-16.4°256.2°23h 44.1m-20° 15'Aquarius3.1°
Sep 22, 07:00:0079,69511.9-25.2°257.7°23h 37.9m-23° 6'Aquarius9.4°
Sep 22, 07:30:0068,94611.6-34.7°258.0°23h 29.6m-26° 49'Sculptor15.7°
Sep 22, 08:00:0058,35811.3-45.0°255.7°23h 17.6m-31° 53'Sculptor21.8°
Sep 22, 08:30:0048,10510.9-56.1°247.0°22h 58.0m-39° 4'Grus27.9°
Sep 22, 09:00:0038,59210.6-65.3°219.6°22h 19.4m-49° 28'Grus33.7°
Sep 22, 09:30:0030,75910.3-59.0°171.3°20h 33.0m-62° 52'Pavo39.3°
Sep 22, 10:00:0026,56510.3-31.5°147.9°16h 8.9m-62° 48'Triangulum Australe44.5°
Sep 22, 10:30:0028,13411.02.2°141.9°13h 47.4m-39° 59'Centaurus49.1°
Sep 22, 11:00:0034,77612.128.6°143.3°12h 58.7m-19° 39'Virgo53.0°
Sep 22, 11:30:0044,16113.546.3°149.9°12h 34.9m-6° 37'Virgo55.8°
Sep 22, 12:00:0054,82414.757.8°162.3°12h 20.7m1° 36'Virgo57.4°
Sep 22, 12:30:0066,11614.864.5°181.3°12h 11.1m7° 4'Virgo57.4°
Sep 22, 13:00:0077,75114.766.5°204.9°12h 4.3m10° 54'Virgo55.9°
Sep 22, 13:30:0089,59514.864.6°226.4°11h 59.1m13° 43'Coma Berenices53.1°
Sep 22, 14:00:00101,57814.960.3°242.3°11h 55.2m15° 50'Leo49.3°
Sep 22, 14:30:00113,65815.054.8°253.4°11h 52.1m17° 30'Leo44.6°
Sep 22, 15:00:00125,81115.248.7°261.5°11h 49.7m18° 50'Leo39.5°
Sep 22, 15:30:00138,01715.342.5°267.8°11h 47.7m19° 55'Leo33.9°
Sep 22, 16:00:00150,26015.536.2°273.1°11h 46.2m20° 49'Leo28.0°