S/2021 J 5
Discovery[1]
Discovered byScott S. Sheppard
David J. Tholen
Chad Trujillo
Discovery siteMauna Kea Obs.
Discovery date5 September 2021
Orbital characteristics[1][2]
Epoch 25 February 2023 (JD 2460000.5)
Observation arc1.11 yr (405 d)
0.1526210 AU (22,831,780 km)
Eccentricity0.2001547
–1.93 yr (–704.80 days)
329.67857°
0° 30m 38.821s / day
Inclination163.17500° (to ecliptic)
249.95820°
32.01323°
Satellite ofJupiter
GroupCarme group
Physical characteristics
Mean diameter
≈2 km[3]
23.6[3]
16.8[1]

S/2021 J 5 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard, David J. Tholen, and Chad Trujillo on 5 September 2021, using the 8.2-meter Subaru Telescope at Mauna Kea Observatory, Hawaii. It was announced by the Minor Planet Center on 19 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.[1]

S/2021 J 5 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 0.2–0.3, and inclinations between 163–166°.[3] It has a diameter of about 2 km (1.2 mi) for an absolute magnitude of 16.8.[3]

References

  1. ^ a b c d "MPEC 2023-B41 : S/2021 J 5". Minor Planet Electronic Circulars. Minor Planet Center. 19 January 2023. Retrieved 20 January 2023.
  2. ^ "Planetary Satellite Discovery Circumstances". JPL Solar System Dynamics. NASA. Retrieved 10 January 2023.
  3. ^ a b c d Sheppard, Scott S. "Moons of Jupiter". Earth & Planets Laboratory. Carnegie Institution for Science. Retrieved 10 January 2023.


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