User: anonymous   Login
Location: Truman State University Observatory
(40.1787°N, 92.6006°W)
Time: 16:46:21


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, 11:51:45
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, 06:00:00147,04813.24.4°249.7°0h 1.8m-12° 31'Cetus-11.9°
Sep 22, 06:30:00136,04713.0-2.2°254.2°23h 59.5m-13° 34'Cetus-6.2°
Sep 22, 07:00:00125,05612.8-9.0°258.3°23h 57.0m-14° 49'Cetus-0.5°
Sep 22, 07:30:00114,06912.6-16.2°262.2°23h 54.1m-16° 18'Aquarius5.2°
Sep 22, 08:00:00103,08212.4-23.6°265.9°23h 50.7m-18° 7'Aquarius10.9°
Sep 22, 08:30:0092,09612.2-31.5°269.2°23h 46.6m-20° 21'Aquarius16.5°
Sep 22, 09:00:0081,12411.9-39.8°272.0°23h 41.4m-23° 12'Aquarius22.0°
Sep 22, 09:30:0070,20111.7-48.9°274.0°23h 34.5m-26° 56'Sculptor27.3°
Sep 22, 10:00:0059,40411.3-59.0°273.5°23h 24.4m-32° 3'Sculptor32.3°
Sep 22, 10:30:0048,90811.0-70.3°264.4°23h 8.0m-39° 20'Grus36.9°
Sep 22, 11:00:0039,11410.6-77.9°211.8°22h 34.9m-50° 9'Grus41.1°
Sep 22, 11:30:0030,96910.3-62.2°160.1°20h 57.0m-65° 0'Pavo44.6°
Sep 22, 12:00:0026,51310.3-31.0°153.3°15h 56.3m-66° 31'Triangulum Australe47.4°
Sep 22, 12:30:0028,04210.93.0°157.3°13h 30.8m-42° 0'Centaurus49.2°
Sep 22, 13:00:0034,84712.227.8°166.5°12h 46.9m-20° 49'Corvus49.8°
Sep 22, 13:30:0044,45313.642.2°179.9°12h 26.2m-7° 29'Virgo49.4°
Sep 22, 14:00:0055,33015.249.5°196.3°12h 14.0m0° 53'Virgo47.8°
Sep 22, 14:30:0066,81615.051.7°213.3°12h 5.9m6° 24'Virgo45.2°
Sep 22, 15:00:0078,62214.850.5°228.6°12h 0.2m10° 16'Virgo41.8°
Sep 22, 15:30:0090,61114.947.3°241.2°11h 56.0m13° 6'Leo37.7°
Sep 22, 16:00:00102,71315.043.0°251.4°11h 52.8m15° 16'Leo33.2°
Sep 22, 16:30:00114,88615.138.1°259.6°11h 50.4m16° 57'Leo28.2°
Sep 22, 17:00:00127,10515.232.9°266.6°11h 48.6m18° 18'Leo23.0°
Sep 22, 17:30:00139,34915.427.5°272.8°11h 47.1m19° 25'Leo17.5°
Sep 22, 18:00:00151,60415.522.1°278.4°11h 46.0m20° 21'Leo11.9°