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2023 FW13

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Near-Earth asteroid

2023 FW13
Discovery 
Discovered byPan-STARRS
Discovery siteHaleakala Observatory
Discovery date28 March 2023
Designations
MPC designation2023 FW13
Minor planet category
Orbital characteristics 
Epoch 26 February 2023 (JD 2460000.5)
Uncertainty parameter 0
Observation arc10.86 yr (3,967 d)
Aphelion1.1781 AU
Perihelion0.8225 AU
Semi-major axis1.0003 AU
Eccentricity0.1777
Orbital period (sidereal)1.0005 yr (365.42 days)
Mean anomaly73.09°
Mean motion0° 59 6.601 / day
Inclination2.7441°
Longitude of ascending node70.557°
Argument of perihelion354.40°
Earth MOID.0454762 AU (6,803,140 km; 17.6979 LD)
Physical characteristics
Absolute magnitude (H)
  • 26.01
  • 26.10

2023 FW13 is an asteroid that was spotted on March 28, 2023, from the Pan-STARRS telescope at Hawaii, United States. It circles the sun in sync with Earth in such a way that it appears to orbit Earth, but well outside Earth's Hill sphere, making it a quasi-satellite.

The orbit of 2023 FW13 has a one-to-one resonance with Earth and is very eccentric, reaching out halfway to Mars and halfway to Venus. It's estimated that it has circled Earth since 100 B.C. and will continue until 3700 A.D. If those estimates are correct, it would significantly overtake 469219 Kamoʻoalewa as the most stable quasi-satellite of Earth.

References

  1. ^ "2023 FW13". Minor Planet Center. Archived from the original on 10 April 2023. Retrieved 21 May 2023.
  2. ^ "JPL Small-Body Database Browser: (2023 FW13)" (2023-04-01 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 November 2022. Retrieved 21 May 2023.
  3. ^ Kuthunur, Sharmila (12 April 2023). "Newfound asteroid is a long-term 'quasi-moon' of Earth". Space.com. Archived from the original on 20 May 2023. Retrieved 20 May 2023.
  4. ^ Chandler, David. "DOES EARTH HAVE A NEW QUASI-MOON?". Archived from the original on 14 May 2023. Retrieved 20 May 2023.
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