Discovery[1] | |
---|---|
Discovered by | Scott S. Sheppard |
Discovery site | Cerro Tololo Obs. |
Discovery date | 30 August 2022 |
Orbital characteristics[2][3] | |
Epoch 31 March 2024 (JD 2460400.5) | |
Observation arc | 20.61yr (7,528d) |
Earliestprecovery date | 26 February 2003 |
0.1373821 AU (20,552,070 km) | |
Eccentricity | 0.2125986 |
–1.65 yr (–601.92 days) | |
294.51229° | |
0° 35m 53.108s / day | |
Inclination | 145.73211°(toecliptic) |
302.06960° | |
67.60587° | |
Satellite of | Jupiter |
Group | Ananke group |
Physical characteristics | |
≈1 km[4] | |
Albedo | 0.04(assumed)[4] |
24.0 (average)[4] | |
17.3[2] | |
S/2022 J 3 is a small outernatural satellite ofJupiter discovered byScott S. Sheppard on 30 August 2022, using the 4.0-meterVíctor M. Blanco Telescope atCerro Tololo Observatory,Chile. It was announced by theMinor 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 3 is part of theAnanke group, a cluster ofretrogradeirregular moons of Jupiter that follow similar orbits toAnanke atsemi-major axes between 19–22 million km (12–14 million mi),orbital eccentricities between 0.1 and 0.4, andinclinations between 139 and 155°.[4] It has a diameter of about 1 km (0.62 mi) for anabsolute magnitude of 17.3.[4] The moon has been observed for over 20 years, with the earliest known observation on 26 February 2003.[2]
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