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2013 TV135

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2013 TV135
Discovery[1][Note 1]
Discovered byGennadiy Borisov(L51)
Discovery date12 October 2013
Designations
2013 TV135
Orbital characteristics[2]
Epoch13 January 2016 (JD2457400.5)
Uncertainty parameter4
Observation arc108 days
Aphelion3.8684AU(578.70Gm) (Q)
Perihelion0.98712 AU (147.671 Gm) (q)
2.4278 AU (363.19 Gm) (a)
Eccentricity0.59340 (e)
3.78yr(1381.7d)
219.63°(M)
0° 15m37.98s/ day (n)
Inclination6.7499° (i)
333.42° (Ω)
23.707° (ω)
EarthMOID0.00474236 AU (709,447 km)
JupiterMOID1.6039 AU (239.94 Gm)
Physical characteristics
Dimensions~450 meters (1,480 ft)[3]
Mass1.2×1011kg(assumed)[3]
19.5[2]

2013 TV135is anApollonear-Earth asteroidestimated to have a diameter of 450 meters (1,480 ft).[3]On 16 September 2013, it passed about 0.0448AU(6,700,000km;4,160,000mi) from Earth.[2]On 20 September 2013, it came toperihelion(closest approach to the Sun).[2]The asteroid was discovered on 12 October 2013 by Ukrainianamateur astronomerGennadiy Borisovwith a custom 0.2-meter (7.9 in) telescope using images dating back to 8 October 2013.[1][Note 1]It was rated level 1 on theTorino Scalefrom 16 October 2013 until JPL solution 26 on 3 November 2013. It reached aPalermo Technical Impact Hazard Scalerating of -0.73.[4]It was removed from the JPLSentry Risk Tableon 8 November 2013 using JPL solution 32 with anobservation arcof 27 days.[5]

Past Earth-impact estimates

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On 16 October 2013, near-Earth asteroid2013 TV135(with a short observation arc of 7 days) was listed on the JPL Sentry Risk Table with 1 in 63,000 chance of impacting Earth on 26 August 2032.[6][7]This gave the asteroid aTorino Scalerating of 1.[7]The peak estimated threat from the asteroid occurred 19–20 October 2013 whenLeonid EleninandNEODySestimated the odds of impact to be 0.03% (1 in 3,800).[8]On 31 October 2013, NEODyS estimated the odds of impact to be 1 in 4,330[9]and the Sentry Risk Table estimated the odds of impact to be 1 in 6,250.[4]On 7 November 2013, with a short observation arc of 25 days, the Sentry Risk Table estimated it had about a 1 in 169,492,000 chance of an Earth impact on 26 August 2032.[3]It was removed from the JPLSentry Risk Tableon 8 November 2013 using JPL solution 32 with an observation arc of 27 days.[5]

As of February 10, 2014,the NEODySnominalbest-fit orbit shows that2013 TV135will be 0.76AU(114,000,000km;71,000,000mi) from Earth on 26 August 2032.[10]

Orbit

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With anorbital inclinationof only 6.7 degrees andperihelion0.99 AU from the Sun,[2]the point ofperihelionis controlled by close approaches to Earth. With a short observation arc of 108 days, it has an orbit with anUncertaintyof 4.[2]Given the relatively large size of the asteroid, astronomers were able to refine the orbit of this asteroid over several months.

Impact effects

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An Earth impact would have thekinetic energyof 3,200megatons of TNT,[3]approximately 60 times the energy of Russia's 50 MtTsar Bomba.This would also be equivalent to 16 times the1883 eruption of Krakatoawhich was 200 Mt and had aVolcanic Explosivity Indexof 6.

See also

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Notes

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  1. ^abThe MPC circular listsCrimean Astrophysical Observatory(code 095) as the discovery site of the asteroid because Borisov had not registered his observatory MARGO (code L51) until 17 November 2013, which is a month after the discovery.

References

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  1. ^ab"MPEC 2013-U03: 2013 TV135".Minor Planet Electronic Circular.Minor Planet Center.Retrieved16 October2013.
  2. ^abcdefg"JPL Small-Body Database Browser: (2013 TV135)"(last observation: 2014-01-28;arc:108 days;uncertainty:4).Jet Propulsion Laboratory.Retrieved4 April2016.
  3. ^abcde"Earth Impact Risk Summary: 2013 TV135 (Nov 7 arc=25 days)".archive.is: JPL. 7 November 2013.Retrieved8 November2013.(5.9e-09= 1 in 169,492,000 chance)
  4. ^ab"Earth Impact Risk Summary: 2013 TV135 (Oct 31 arc=22 days)".archive.is: JPL. 31 October 2013.Retrieved2 November2013.(1.6e-04= 1 in 6,250 chance)
  5. ^ab"Date/Time Removed".NASA/JPL Near-Earth Object Program Office. Archived fromthe originalon 2 June 2002.Retrieved8 November2013.
  6. ^"Asteroid 2013 TV135 - A Reality Check".Near Earth Object Program.JPL.Archived fromthe originalon 19 October 2013.Retrieved17 October2013.
  7. ^ab"Earth Impact Risk Summary: 2013 TV135 (Oct 16 arc=7 days)"(2013-10-17 computed on Oct 16, 2013). Wayback Machine: JPL. Archived fromthe originalon 17 October 2013.Retrieved2 November2013.(1.6e-05= 1 in 63,000 chance)
  8. ^"Probability collision of 2013 TV135 with Earth is very low, but still remains".Leonid Elenin.SpaceObs.org. 19 October 2013.Retrieved21 October2013.
  9. ^"NEODyS 2013 TV135 Impactor Table (Oct 31)".archive.is: NEODyS-2. 31 October 2013.Retrieved2 November2013.(2.31e-4= 1 in 4,330 chance)
  10. ^"2013TV135 Ephemerides for 26 August 2032".NEODyS(Near Earth Objects – Dynamic Site).Retrieved10 February2014.
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