2017 BS5

Summary

2017 BS5
Near earth asteroid 2017 BS5 July 2017 orbital flyby.png
July 23, 2017 flyby of earth
Discovery [1][2]
Discovered byATLAS (T05)
Discovery siteHaleakala Obs.
Discovery date25 January 2017
Designations
2017 BS5
Apollo · NEO[1]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 1
Observation arc(190 days)
Aphelion1.0231 AU
Perihelion1.0078 AU
1.0154 AU
Eccentricity0.0075
1.02 yr (374 days)
204.63°
0° 57m 47.52s / day
Inclination11.232°
120.84°
15.577°
Earth MOID0.0070 AU · 2.7 LD
Physical characteristics
Dimensions40–90 meters
24.1[1]

In astronomy of the solar system, 2017 BS5 is a sub-kilometer asteroid, classified as near-Earth object that belongs to the Apollo group. It measures approximately 40–90 meters.[3] During a close approach to Earth, it was first observed 25 January 2017, by the ATLAS survey at Haleakala Observatory, Hawaii, United States.[2]

Orbit

2017 BS5 has a low-eccentricity orbit with a semi-major axis only slightly larger than that of Earth. It orbits the Sun at a distance of 1.008–1.023 AU once every 1.02 years (374 days). Its orbit has an eccentricity of 0.01 and an inclination of 11° with respect to the ecliptic.[1] It has an Earth minimum orbital intersection distance of 0.007 AU (1,050,000 km), which corresponds to 2.7 lunar distances.[1] The body is too small to be classified as a potentially hazardous asteroid.

July 2017 flyby

On 23 July 2017, it passed by within 3.15 lunar distances.[4] Seen from the Earth it passed straight north to south from Draco south into Scorpio. With its 1.023 year orbit it has a synodic period of 43 years with the earth, so it will flyby the Earth every 43 years or so. JPL Small-Body Database's simulator show the previous flyby in July 1973 and next one will be in July 2061.

Near earth asteroid 2017 BS5 July 2017 closeup flyby.png Near earth asteroid 2017 BS5 July 2017 sky flyby.png

References

  1. ^ a b c d e f "JPL Small-Body Database Browser: (2017 BS5)" (2017-07-23 last obs.). Jet Propulsion Laboratory. Retrieved 2 August 2017.
  2. ^ a b "2017 BS5". Minor Planet Center. Retrieved 2 August 2017.
  3. ^ "Five Known Asteroids Will Give Earth A Close Shave in The Coming Year". IFLScience. Retrieved 13 February 2020.
  4. ^ "Five asteroids will cruise by Earth in the next year, and one is coming very close".

External links

  • MPEC 2017-B69 : 2017 BS5
  • 2017 BS5 at NeoDyS-2, Near Earth Objects—Dynamic Site
    • Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
  • 2017 BS5 at the JPL Small-Body Database
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters