S/2022 J 1
Discovery[1]
Discovered byScott S. Sheppard
Discovery siteCerro Tololo Obs.
Discovery date30 August 2022
Orbital characteristics[1][2]
Epoch 25 February 2023 (JD 2460000.5)
0.1471648 AU (22,015,540 km)
Eccentricity0.1914973
–1.83 yr (–667.34 days)
330.01243°
0° 32m 22.026s / day
Inclination165.43419° (to ecliptic)
50.65788°
343.35399°
Satellite ofJupiter
GroupCarme group
Physical characteristics
Mean diameter
≈2 km[3]
Albedo0.04 (assumed)[3]
23[3]
17.0[1]

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°.[3] It has a diameter of about 2 km (1.2 mi) for an absolute magnitude of 17.0.[3]

References

  1. ^ a b c d "MPEC 2023-D44 : S/2022 J 1". Minor Planet Electronic Circulars. Minor Planet Center. 22 February 2023. Retrieved 22 February 2023.
  2. ^ "Planetary Satellite Discovery Circumstances". JPL Solar System Dynamics. NASA. Retrieved 22 February 2023.
  3. ^ 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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