2020 HS7
| Discovery Synodic rotation period | 2.9945±0.0002 s[4] 2.9938±0.0002 s[4] | |
|---|---|---|
| 29.10±0.36[3] | ||
2020 HS7 is a very small asteroid classified as a
lunar distance (380,000 km; 240,000 mi) of Earth in the next 100 years.[3]
Observations by
rotation period of 3 seconds, making it the fastest-rotating asteroid known as of 2022[update].[4] No other near-Earth asteroid of similar size is known to have a rotation period shorter than 10 seconds, which could be attributed to the tangential component of the YORP effect accelerating their rotation far beyond this period.[4] The asteroid exhibits a very small light curve amplitude of 0.07 magnitudes, which either implies a nearly spherical shape or a pole-on rotation during observations.[4]
See also
References
- ^ a b "2020 HS7". Minor Planet Center. Retrieved 15 July 2022.
- ^ "MPEC 2022-F48 : 2022 FD1". Minor Planet Electronic Circular. Minor Planet Center. 28 April 2020. Retrieved 15 July 2022.
- ^ a b c d e "JPL Small-Body Database Browser: (2020 HS7)" (2022-04-28 last obs.). Jet Propulsion Laboratory. Retrieved 29 July 2020.
- ^ .
- ^ a b Bartels, Meghan (5 May 2020). "Tiny asteroid's super-close Earth flyby shows planetary protection in action, scientists say". Space.com.
- ^ "ESA space situational awareness 2020HS7". European Space Agency. Retrieved 29 July 2020.
- ^ Malik, Tariq (28 April 2020). "Small asteroid zips safely by Earth just ahead of a larger space rock's flyby". Space.com.
External links
- 2020 HS7 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2020 HS7 at ESA–space situational awareness
- 2020 HS7 at the JPL Small-Body Database
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