Discovery[1] | |
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Discovered by | Scott S. Sheppard |
Discovery site | Las Campanas Obs. |
Discovery date | 9 March 2016 |
Orbital characteristics[1][2] | |
Epoch 25 February 2023 (JD 2460000.5) | |
Observation arc | 6.78 yr (2,475 d) |
Earliest precovery date | 5 February 2016 |
0.1581850 AU (23,664,140 km) | |
Eccentricity | 0.1986458 |
–2.04 yr (–743.69 days) | |
138.36439° | |
0° 29m 2.661s / day | |
Inclination | 146.25507° (toecliptic) |
309.09022° | |
302.78410° | |
Satellite of | Jupiter |
Group | Pasiphae group |
Physical characteristics | |
≈1 km[3] | |
24.0[3] | |
17.3[1] | |
S/2016 J 4 is a small outer natural satelliteofJupiter discovered by Scott S. Sheppard on 9 March 2016, using the 6.5-meter Magellan-Baade TelescopeatLas Campanas Observatory, Chile. It was announced by the Minor Planet Center on 24 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.[1]
S/2016 J 4 is part of the Pasiphae group, a dispersed cluster of distant retrograde irregular moons of Jupiter that follow similar orbits to Pasiphaeatsemi-major axes between 22–25 million km (14–16 million mi), orbital eccentricities between 0.2–0.6, and inclinations between 140–160°.[3] It has a diameter of about 1 km (0.62 mi) for an absolute magnitude of 17.3, making it one of Jupiter's smallest known moons.[3]
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Listed in increasing approximate distance from Jupiter | |
Inner moons |
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Galilean moons |
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Themisto |
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Himalia group (9) |
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Carpo group (2) |
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Valetudo |
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Ananke group (26) |
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Carme group (30) |
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Pasiphae group (18) |
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See also |
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