S/2022 J 1 Explained

S/2022 J 1
Discoverer:Scott S. Sheppard
Discovery Site:Cerro Tololo Obs.
Discovered:30 August 2022
Epoch:31 March 2024 (JD 2460400.5)
Observation Arc:20.62 yr (7,530 d)
Earliest Precovery Date:24 February 2003
Eccentricity:0.1357222
Period:–2.05 yr (–748.64 days)
Mean Anomaly:184.22280°
Mean Motion: / day
Inclination:165.94051°
Asc Node:51.07021°
Arg Peri:334.92072°
Satellite Of:Jupiter
Group:Carme group
Mean Diameter:
Albedo:0.04
Magnitude:23.8 (average)
Abs Magnitude:17.0

S/2022 J 1 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 1 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 NaNe6km, orbital eccentricities between 0.2 and 0.3, and inclinations between 163 and 166°. It has a diameter of about for an absolute magnitude of 17.0. The moon has been observed for over 20 years, with the earliest known observation on 24 February 2003.