2009 JF1

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2009 JF1
Discovery[1]
Discovered byMount Lemmon Survey
Discovery date4 May 2009
Designations
MPC designation
2009 JF1
Minor planet category
Orbital characteristics[3]
Epoch 2022-Jan-21 (JD 2459600.5)
Uncertainty parameter 7
Observation arc1.2 days[2]
Aphelion3.29 AU (Q)
Perihelion0.4953 AU (q)
1.89 AU (a)
Eccentricity0.738 (e)
2.6 years
300°±3° (M)
Inclination6.16° (i)
45.5° (Ω)
2022-Jul-02 ± 3 days
281° (ω)
Earth MOID0.000055 AU (8,200 km)
Jupiter MOID2.1 AU (310,000,000 km)
Physical characteristics
Dimensions
  • ~10 m (33 ft)[2]
  • 8–17 meters
Absolute magnitude (H)
27.7[3][4]

2009 JF1 is a small near-Earth object that should pass within 0.3 AU (45 million km) of Earth in 2022.[5] On 5 February 2022 the 2009 observations were remeasured greatly reducing the odds of an impact. On 6 May 2022 it has a 1-in-140,000 chance of impacting Earth.[2] It is estimated to be 10-meters in diameter which would make it smaller than the Chelyabinsk meteor. It has a very short observation arc of 1.2 days and has not been observed since 2009. On 6 May 2022 it is nominally expected to be 0.2 AU (30 million km) from Earth but has an uncertainty region of ±23 million km (0.15 AU).[5] The nominal Earth approach is 15 May 2022 and would have the asteroid only brightening to apparent magnitude 26.[6][7] With a Palermo scale rating of -4.41,[2] the odds of impact are still 26000 times less than the background hazard level for an asteroid of this size.

Virtual impactor[2]
Date Impact
probability
(1 in) 		JPL Horizons
nominal geocentric
distance (AU) 		NEODyS
nominal geocentric
distance (AU) 		MPC[8]
nominal geocentric
distance (AU) 		Find_Orb
nominal geocentric
distance (AU) 		uncertainty
region
(3-sigma)
2022-05-06 140000 0.19 AU (28 million km)[5] 0.16 AU (24 million km)[7] 0.19 AU (28 million km) 0.19 AU (28 million km)[9] ± 23 million km[5]

About two months after approaching Earth, it will come to perihelion (closest approach to the Sun), but the time of perihelion passage is only known with an accuracy of ±3 days.[3]

See also[]

References[]

  1. ^ "MPEC 2009-J26 : 2009 JF1". IAU Minor Planet Center. 5 May 2009. Retrieved 13 October 2021. (K09J01F)
  2. ^ a b c d e f "Earth Impact Risk Summary: 2009 JF1". NASA/JPL Near-Earth Object Program Office. Retrieved 13 October 2021. (Wayback Machine 2009)
  3. ^ a b c "JPL Small-Body Database Browser: (2009 JF1)" (last observation: 2009-05-05; arc: 1 day). Jet Propulsion Laboratory. Archived from the original on 28 May 2019. Retrieved 13 October 2021.
  4. ^ "2009 JF1 Orbit". Minor Planet Center. Retrieved 13 October 2021.
  5. ^ a b c d "Horizons Batch for 2022-05-06 Virtual Impactor". JPL Horizons. Archived from the original on 13 October 2021. Retrieved 13 October 2021. RNG_3sigma = uncertainty range in km. (JPL#7/Soln.date: 2021-Apr-15 generates RNG_3sigma = 62906567 km for 2022-May-06.)
  6. ^ "Horizons Batch for 2022-05-10 NOMINAL". JPL Horizons. Archived from the original on 27 December 2021. Retrieved 27 December 2021.
  7. ^ a b "2009JF1 Ephemerides for 6 May 2022". NEODyS (Near Earth Objects – Dynamic Site). Archived from the original on 13 October 2021. Retrieved 13 October 2021.
  8. ^ "MPC Ephemeris Service". IAU Minor Planet Center. Retrieved 13 October 2021.
  9. ^ "Find_Orb for 2022-05-06". Project Pluto. Archived from the original on 13 October 2021. Retrieved 13 October 2021.

External links[]

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