2018 AG37

2018 AG37
2018 AG37, pictures (or images) from the Gemini North telescope in 2019
Discovery
Discovered by
Discovery siteMauna Kea Obs.
Discovery date15 January 2018
(first observed)
Designations
MPC designation2018 AG37
"FarFarOut" (nickname)
Orbital characteristics
Epoch 2019-Feb-26 (JD 2458540.5)
Uncertainty parameter 9
Observation arc2.03 yr (740 days) using 11 observations
Aphelion132.7±7.4 AU
Perihelion27.63±0.17 AU
80.2±4.5 AU
Eccentricity0.655±0.02
717.8±60 yr
186.9°±219°
0° 0m 4.949s / day
Inclination18.68°±0.12°
68.35°±0.53°
≈2366?
231.9°±60°
Neptune MOID≈3 AU (450 million km)
Physical characteristics
Mean diameter
  • ≈400 km (est.)
  • 797 km (est.)
0.057 (est.)
25.3
  • 4.22±0.10
  • 4.22
This illustration imagines what the distant object nicknamed "FarFarOut" might look like in the outer reaches of the Solar System

2018 AG37 is a dwarf planet. Its nickname is FarFarOut.

Notes

  1. 1 2 Statistics of small numbers and random observational errors cause the orbital elements to be very poorly constrained and the uncertainties are so large and non-linear that these error bars are not really meaningful and just show that the uncertainties are large. For example the JPL SBDB uncertainty in the perihelion date is 408 years (1-sigma) or 1224 years (3-sigma).

References

  1. 1 2 "MPEC 2021-C187 : 2018 AG37". Minor Planet Electronic Circular. Minor Planet Center. 10 February 2021. Retrieved 10 February 2021.
  2. 1 2 3 4 "2018 AG37". Minor Planet Center. International Astronomical Union. Retrieved 10 February 2021.
  3. 1 2 "Solar System's Most Distant Known Member Confirmed". Carnegie Science. 10 February 2021. Retrieved 10 February 2021.
  4. ↑ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 14 February 2021.
  5. 1 2 3 "JPL Small-Body Database Browser: (2018 AG37)" (2020-01-25 last obs.). Jet Propulsion Laboratory. Archived from the original on 10 February 2021. Retrieved 7 August 2021.
  6. 1 2 3 "List of Known Trans-Neptunian Objects". Johnston's Archive. 23 July 2023. Retrieved 23 July 2023.
  7. ↑ "Orbit Fit and Astrometric record for 18AG37". Southwest Research Institute. Retrieved 13 September 2021. (The Deep Ecliptic Survey Object Classifications)
  8. ↑ "dwarf planet, n.", Oxford English Dictionary, Oxford University Press, 2023-03-02, retrieved 2024-06-19