S/2022 J 3 | |
Discoverer: | Scott S. Sheppard |
Discovery Site: | Cerro Tololo Obs. |
Discovered: | 30 August 2022 |
Epoch: | 31 March 2024 (JD 2460400.5) |
Observation Arc: | 20.61 yr (7,528 d) |
Earliest Precovery Date: | 26 February 2003 |
Eccentricity: | 0.2125986 |
Period: | –1.65 yr (–601.92 days) |
Mean Anomaly: | 294.51229° |
Mean Motion: | / day |
Inclination: | 145.73211° |
Asc Node: | 302.06960° |
Arg Peri: | 67.60587° |
Satellite Of: | Jupiter |
Group: | Ananke group |
Mean Diameter: | ≈ |
Albedo: | 0.04 |
Magnitude: | 24.0 (average) |
Abs Magnitude: | 17.3 |
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.
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 NaNe6km, orbital eccentricities between 0.1 and 0.4, and inclinations between 139 and 155°. It has a diameter of about for an absolute magnitude of 17.3. The moon has been observed for over 20 years, with the earliest known observation on 26 February 2003.