File:Bennu_mosaic_OSIRIS-REx_(square).png · Wikimedia Commons · See Wikimedia Commons
101955 Bennu
Sign in to saveAlso known as (101955) 1999 RQ36, Bennu, 1999 RQ36
near-Earth asteroid of highest impact hazard
Key facts
- Discovered by
- LINEAR
- Discovery site
- Lincoln Lab's ETS
- Discovery date
- 11 September 1999
- Pronunciation
- / ˈ b ɛ n uː /
- Named after
- Bennu
- Alternative designations
- 1999 RQ 36
- Minor planet category
- Apollo · NEO · PHA · risk listed
- Observation arc
- 21.06 yr (7693 days)
- Aphelion
- 1.3559 au (202.84 Gm )
- Perihelion
- 0.8969 au (134.17 Gm)
- Semi major axis
- 1.1264 au (168.51 Gm)
- Orbital period sidereal
- 1.1955 yr (436.65 d )
- Average orbital speed
- 28.0 km/s (63,000 mph)
- Mean anomaly
- 101.7039 °
- Mean motion
- 0° 49 28.056 / day
- Inclination
- 6.0349°
- Longitude of ascending node
- 2.0609°
- Argument of perihelion
- 66.2231°
via Wikipedia infobox
Wikidata facts
- Instance of
- potentially hazardous asteroid
- Named after
- Bennu
- Area
- 0.7874
- Parent body
- Sun
- Minor-planet group
- Apollo asteroid
- Diameter
- 0.48444
- Mass
- 73290000000
- Orbital period
- 436.6487281120201
- Image
- Bennu mosaic OSIRIS-REx (square).png
Show 23 more facts
- discoverer or inventor
- Lincoln Near-Earth Asteroid Research
- Commons category
- 101955 Bennu
- time of discovery or invention
- 1999-09-11
- provisional designation
- 1999 RQ36
- orbital inclination
- 6.03494377024794
- semi-major axis of an orbit
- 1.126391025894812
- periapsis
- 0.8968944004459729
- apoapsis
- 1.355887651343651
- longitude of ascending node
- 2.06086619569642
- argument of periapsis
- 66.22306084084298
- mean anomaly
- 101.703952002457
- rotation period
- 4.296061
- asteroid spectral type
- F-type asteroid
- absolute magnitude
- 20.21
- orbital eccentricity
- 0.2037450762416414
- catalog code
- 1999 RQ36
- albedo
- 0.0170
- density
- 1.194
- temperature
- 279
- epoch
- January 1, 2011
- volume as quantity
- 0.061354
- color index
- 0.69
- time of periapsis
- 2455439.1419408727
Sources (6)
via Wikidata · CC0
~27 min read
Encyclopedic overview
Spectral type B F Absolute magnitude (H) 20.9
101955 Bennu (provisional designation 1999 RQ36) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table and has the second highest cumulative rating on the Palermo scale. It has a cumulative chance of around 1-in-1,750 of impacting Earth between 2178 and 2290 with the greatest risk being on 24 September 2182. It is named after Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.
Excerpted from Wikipedia’s “101955 Bennu” article, available under the CC BY-SA 4.0 licence.