Astronomy:2019 SU3

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2019 SU3
Discovery [1][2]
Discovered byATLAS-HKO
Discovery siteHaleakala Obs.
Discovery date23 September 2019
(first observed only)
Designations
2019 SU3
Minor planet categoryNEO · Apollo [1][2]
Orbital characteristics [2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 2[2] · 3[1]
Observation arc28 days
|{{{apsis}}}|helion}}1.1948 AU
|{{{apsis}}}|helion}}0.9922 AU
1.0935 AU
Eccentricity0.0927
Orbital period1.14 yr (418 d)
Mean anomaly257.62°
Mean motion0° 51m 42.84s / day
Inclination1.1621°
Longitude of ascending node5.1182°
322.69°
Earth MOID0.0022 astronomical unit|AU (0.86 LD)
Physical characteristics
Mean diameter15 m[3][4]
Absolute magnitude (H)27.2[1]
27.28[2]


2019 SU3 is a very small near-Earth asteroid of the Apollo group, first observed by the Asteroid Terrestrial-impact Last Alert System at Haleakala Observatory on 23 September 2019. It was briefly listed on the Risk List of the European Space Agency. With a 18-day observation arc, the nominal orbit passes 0.02 AU (3,000,000 km; 1,900,000 mi) from Earth on 27 September 2084.[2] It was removed from the Sentry Risk Table on 12 October 2019.

Based on calculations with a shorter observation arc, the asteroid could have passed very close to Earth, about 9,700 km (6,000 mi), in mid-September, 2084.[3][5][6][7] According to astronomers, "Its small size of about 15 m (49 ft) would result in limited consequences even in case of impact."[3]

Trajectory

2019 SU3 asteroid trajectory – as/of 12 October 2019
(Asteroid orbit is in white; Earth orbit is in blue)[2]

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 "2019 SU3". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2019+SU3. Retrieved 30 November 2019. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "JPL Small-Body Database Browser: (2019 SU3)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3856703;cad=1. Retrieved 30 November 2019. ()
  3. ↑ 3.0 3.1 3.2 Mack, Eric (11 October 2019). "Newly spotted asteroid could one day hit Earth, but don't panic - It's on a list of the riskiest space objects spotted so far, but how much should we really worry?". CNET. https://www.cnet.com/news/newly-spotted-asteroid-could-one-day-hit-earth-but-dont-panic/. Retrieved 12 October 2019. 
  4. ↑ Wackback Machine Archive for 2019 SU3 on the esa Risk List
  5. ↑ Wehner, Mike (12 October 2019). "Newly-discovered asteroid could strike Earth within decades". MSN News. https://www.msn.com/en-us/news/technology/newly-discovered-asteroid-could-strike-earth-within-decades/ar-AAIEoWd. Retrieved 12 October 2019. 
  6. ↑ Carpineti, Alfredo (10 October 2019). "Newly Discovered Asteroid Is At Slight Risk Of Hitting Earth In 2084". IFLScience. https://www.iflscience.com/space/newly-discovered-asteroid-is-at-slight-risk-of-hitting-earth-in-2084/. Retrieved 13 October 2019. 
  7. ↑ Wackback Machine Archive for 2019 SU3 close approaches

External links



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