S/2016 J 3
S/2016 J 3 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 9 March 2016, using the 6.5-meter Magellan-Baade Telescope at Las Campanas Observatory, Chile. It was announced by the Minor Planet Center 7 years later on 5 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.
| Discovery | |
|---|---|
| Discovered by | Scott S. Sheppard |
| Discovery site | Las Campanas Obs. |
| Discovery date | 9 March 2016 |
| Orbital characteristics | |
| Epoch 25 February 2023 (JD 2460000.5) | |
| Observation arc | 6.53 yr (2,384 d) |
| 0.1484883 AU (22,213,530 km) | |
| Eccentricity | 0.2360219 |
| –1.85 yr (–676.37 days) | |
| 1.36683° | |
| 0° 31m 56.119s / day | |
| Inclination | 164.06576° (to ecliptic) |
| 130.09696° | |
| 192.07894° | |
| Satellite of | Jupiter |
| Group | Carme group |
| Physical characteristics | |
Mean diameter | ≈2 km |
| Albedo | 0.04 (assumed) |
| 23.6 | |
| 16.7 | |
S/2016 J 3 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°. It has a diameter of about 2 km (1.2 mi) for an absolute magnitude of 16.7.
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