S/2016 J 4

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S/2016 J 4
Discovery [1]
Discovered by Scott S. Sheppard
Discovery site Las Campanas Obs.
Discovery date9 March 2016
Orbital characteristics [1] [2]
Epoch 25 February 2023 (JD 2460000.5)
Observation arc 6.78 yr (2,475 d)
Earliest precovery date5 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° (to ecliptic)
309.09022°
302.78410°
Satellite of Jupiter
Group Pasiphae group
Physical characteristics
Mean diameter
1 km [3]
24.0 [3]
17.3 [1]

    S/2016 J 4 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 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 Pasiphae at semi-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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    <span class="mw-page-title-main">S/2003 J 4</span>

    S/2003 J 4 is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.

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    <span class="mw-page-title-main">S/2003 J 23</span>

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    Valetudo, also known as Jupiter LXII and originally known as S/2016 J 2, is an irregular moon of Jupiter. It was discovered by Scott S. Sheppard and his team in data acquired by the 6.5-m Magellan-Baade telescope of the Las Campanas Observatory in 2016, but was not announced until 17 July 2018, via a Minor Planet Electronic Circular from the Minor Planet Center, which also reported the discovery of nine other of Jupiter's moons. Besides data from Las Campanas, the original announcement also referred to data acquired through the 8.1-m Gemini North telescope of the Mauna Kea Observatories as well as the 4.0-m reflector of the Cerro Tololo Inter-American Observatory.

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    Ersa, also designated Jupiter LXXI, is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 11 May 2018, using the 4.0-meter Víctor M. Blanco Telescope at Cerro Tololo Observatory, Chile. It was announced alongside nine other Jovian moons on 17 July 2018 and it provisionally designated S/2018 J 1 by the Minor Planet Center, after observations were collected over a long enough time span to confirm the satellite's orbit. The satellite has been found in precovery observations as early as 6 August 2000.

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    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.

    S/2021 J 1 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 12 August 2021, using the 6.5-meter Magellan-Baade Telescope at Las Campanas Observatory, Chile. It was announced by the Minor Planet Center on 5 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.

    S/2021 J 2 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 12 August 2021, using the 6.5-meter Magellan-Baade Telescope at Las Campanas Observatory, Chile. It was announced by the Minor Planet Center on 19 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.

    S/2021 J 3 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 12 August 2021, using the 6.5-meter Magellan-Baade Telescope at Las Campanas Observatory, Chile. It was announced by the Minor Planet Center on 19 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.

    S/2018 J 3 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 12 May 2018, using the 6.5-meter Magellan-Baade Telescope at Las Campanas Observatory, Chile. It was announced by the Minor Planet Center on 19 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.

    S/2021 J 4 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 14 August 2021, using the 6.5-meter Magellan-Baade Telescope at Las Campanas Observatory, Chile. It was announced by the Minor Planet Center on 19 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit.

    S/2021 J 6 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard, David J. Tholen, and Chad Trujillo on 5 September 2021, using the 8.2-meter Subaru Telescope at Mauna Kea Observatory, Hawaii. It was announced by the Minor Planet Center on 20 January 2023, after observations were collected over a long enough time span to confirm the satellite's orbit. The satellite has been found in precovery observations as early as 2 October 2010.

    References

    1. 1 2 3 4 "MPEC 2023-B96 : S/2016 J 4". Minor Planet Electronic Circulars. Minor Planet Center. 24 January 2023. Retrieved 25 January 2023.
    2. "Planetary Satellite Discovery Circumstances". JPL Solar System Dynamics. NASA. Retrieved 25 January 2023.
    3. 1 2 3 4 Sheppard, Scott S. "Moons of Jupiter". Earth & Planets Laboratory. Carnegie Institution for Science. Retrieved 25 January 2023.