2024 PT5 is a near-Earth object roughly 11 meters (36 ft) in diameter discovered by ATLAS South Africa, Sutherland on 7 August 2024, the day before approaching Earth at 568,500 km (353,200 mi).

2024 PT 5
Discovery[1]
Discovered by ATLAS South Africa, Sutherland
Discovery date7 August 2024
Designations
2024 PT 5
A119q0V
Orbital characteristics[2]
Epoch 2024-Oct-17 (JD 2460600.5)
Uncertainty parameter 1
Observation arc37 days
Aphelion1.03404606 AU (Q)
Perihelion0.990564100 AU (q)
1.01230508 AU (a)
Eccentricity0.02147671 (e)
(Geocentric hyperbolic e=1.1)
1.01853352 years
323.6773° (M)
Inclination1.52051° (i)
305.5723° (Ω)
2024-Nov-23.5354
116.2485° (ω)
Earth MOID0.00607823 AU (909,290 km; 2.36546 LD)
Jupiter MOID3.95662 AU (591,902,000 km)
Physical characteristics
Dimensions
  • ~ 11 m (36 ft)
  • 5–42 meters
27.6[3]

Orbit

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The object orbits the Sun but makes slow close approaches to the Earth–Moon system. Between 29 September (19:54 UTC) and 25 November 2024 (16:43 UTC) (a period of 1 month and 27 days)[4] it will pass just outside Earth's Hill sphere (roughly 0.01 AU [1.5 million km; 0.93 million mi]) at a low relative velocity (in the range 0.002 km/s (4.5 mph) – 0.439 km/s [980 mph]) and will become temporarily captured by Earth's gravity, with a geocentric orbital eccentricity of less than 1[5] and negative geocentric orbital energy.[6] The most recent closest approach to Earth was 8 August 2024 at roughly 567,000 km (352,000 mi) when it had a relative velocity of 1.37 km/s (3,100 mph).[2]

On 18 August 2024 CNEOS removed 2024 PT5 from their Sentry Risk Table, having determined it poses no risk of a potential Earth impact.[7]

Animation of 2024 PT5
Around the Earth – Close approach
   2024 PT5  ·    Earth  ·    Moon


Entering and Exiting Geocentric Orbit
Epoch Earth distance[8] Geocentric
eccentricity[5]
Apogee[5] Orbital period[5]
2024-Sep-29 0.0230 AU (3.44 million km) 1.016    
2024-Sep-30 0.0232 AU (3.47 million km) 0.997 2.9 AU (430 million km) 99.84 years (36,468 d)
2024-Oct-24 0.0268 AU (4.01 million km) 0.614 0.028 AU (4.2 million km) 1.35 years (493 d)
2024-Nov-25 0.0238 AU (3.56 million km) 0.983 0.72 AU (108 million km) 127.24 years (46,473 d)
2024-Nov-26 0.0236 AU (3.53 million km) 1.009    

See also

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References

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  1. ^ "MPEC 2024-P170 : 2024 PT5". IAU Minor Planet Center. 14 August 2024. Retrieved 10 September 2024. (K24P05T)
  2. ^ a b "JPL Small-Body Database Browser: (2024 PTR5)" (last observation: 28 August 2024; arc: 21 days (122 obs)). Jet Propulsion Laboratory. Retrieved 10 September 2024.
  3. ^ "2024 PT5 Orbit". Minor Planet Center. Retrieved 10 September 2024.
  4. ^ Earth to capture a 'second moon' this weekend, NASA says
  5. ^ a b c d "JPL Horizons On-Line Ephemeris for 2024 PT5 orbit of Earth (geocentric) for September – November 2024". JPL Horizons On-Line Ephemeris System. Jet Propulsion Laboratory. Retrieved 10 September 2024. Geocentric solution. Ephemeris Type: Orbital Elements / Center: @399
  6. ^ de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (10 September 2024). "A Two-month Mini-moon: 2024 PT5 Captured by Earth from September to November". Research Notes of the AAS. 8 (9): 224. Bibcode:2024RNAAS...8..224D. doi:10.3847/2515-5172/ad781f.
  7. ^ "Sentry: Earth Impact Monitoring". JPL/CNEOS.
  8. ^ "Horizons Batch for September – November 2024 Geocentric distance" (Escaping Earth's Hill Sphere @ ~0.01au). JPL Horizons. Retrieved 10 September 2024. (JPL#2/Soln.date: 2024-Aug-30)