S/2022 J 1

S/2022 J 1
Discovery[1]
Discovered byScott S. Sheppard
Discovery siteCerro Tololo Obs.
Discovery date30 August 2022
Orbital characteristics[2][3]
Epoch 31 March 2024 (JD 2460400.5)
Observation arc20.62 yr (7,530 d)
Earliest precovery date24 February 2003
0.1588863 AU (23,769,050 km)
Eccentricity0.1357222
–2.05 yr (–748.64 days)
184.22280°
0° 28m 51.136s / day
Inclination165.94051° (to ecliptic)
51.07021°
334.92072°
Satellite ofJupiter
GroupCarme group
Physical characteristics
≈2 km[4]
Albedo0.04 (assumed)[4]
23.8 (average)[4]
17.0[1][2]

S/2022 J 1 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 30 August 2022, using the 4.0-meter Víctor M. Blanco Telescope at Cerro Tololo Observatory, Chile. It was announced by the Minor Planet Center on 22 February 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.[1]

S/2022 J 1 is part of the Carme group, a tight cluster of retrograde irregular moons of Jupiter that follow similar orbits to Carme at semi-major axes between 22–24 million km (14–15 million mi), orbital eccentricities between 0.2 and 0.3, and inclinations between 163 and 166°.[4] It has a diameter of about 2 km (1.2 mi) for an absolute magnitude of 17.0.[4] The moon has been observed for over 20 years, with the earliest known observation on 24 February 2003.[2]

References

  1. ^ a b c "MPEC 2023-D44 : S/2022 J 1". Minor Planet Electronic Circulars. Minor Planet Center. 22 February 2023. Retrieved 22 February 2023.
  2. ^ a b c "MPEC 2024-D116 : S/2022 J 1". Minor Planet Electronic Circulars. Minor Planet Center. 23 February 2024. Retrieved 23 February 2024.
  3. ^ "Planetary Satellite Discovery Circumstances". JPL Solar System Dynamics. NASA. Retrieved 22 February 2023.
  4. ^ a b c d e Sheppard, Scott S. "Moons of Jupiter". Earth & Planets Laboratory. Carnegie Institution for Science. Retrieved 22 February 2023.


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