S/2022 J 3
S/2022 J 3 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]
Discovery[1] | |
---|---|
Discovered by | Scott S. Sheppard |
Discovery site | Cerro Tololo Obs. |
Discovery date | 30 August 2022 |
Orbital characteristics[1][2] | |
Epoch 25 February 2023 (JD 2460000.5) | |
0.1397905 AU (20,912,360 km) | |
Eccentricity | 0.2721788 |
–1.69 yr (–617.82 days) | |
77.88890° | |
0° 34m 57.706s / day | |
Inclination | 144.45215° (to ecliptic) |
294.05598° | |
45.24901° | |
Satellite of | Jupiter |
Group | Ananke group |
Physical characteristics | |
Mean diameter | ≈1 km[3] |
Albedo | 0.04 (assumed)[3] |
23[3] | |
17.4[1] | |
S/2022 J 3 is part of the Ananke group, a cluster of retrograde irregular moons of Jupiter that follow similar orbits to Ananke at semi-major axes between 19–22 million km (12–14 million mi), orbital eccentricities between 0.1 and 0.4, and inclinations between 139 and 155°.[3] It has a diameter of about 1 km (0.62 mi) for an absolute magnitude of 17.4.[3]
References
- "MPEC 2023-D46 : S/2022 J 3". Minor Planet Electronic Circulars. Minor Planet Center. 22 February 2023. Retrieved 22 February 2023.
- "Planetary Satellite Discovery Circumstances". JPL Solar System Dynamics. NASA. Retrieved 22 February 2023.
- Sheppard, Scott S. "Moons of Jupiter". Earth & Planets Laboratory. Carnegie Institution for Science. Retrieved 22 February 2023.
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