S/2022 J 3

{{Short description|Outer moon of Jupiter}}

{{Use dmy dates|date=February 2023}}

{{Infobox planet

| name = S/2022 J 3

| image =

| image_size =

| caption =

| discovery_ref =

| discoverer = Scott S. Sheppard

| discovery_site = Cerro Tololo Obs.

| discovered = 30 August 2022

| orbit_ref =

| epoch = 31 March 2024 (JD 2460400.5)

| observation_arc = 20.61 yr (7,528 d)

| earliest_precovery_date = 26 February 2003

| semimajor = {{cvt|0.1373821|AU|km|lk=in}}

| eccentricity = 0.2125986

| period = –1.65 yr (–601.92 days)

| mean_anomaly = 294.51229°

| mean_motion = {{Deg2DMS|0.59808555|sup=ms}} / day

| inclination = 145.73211° {{small|(to ecliptic)}}

| asc_node = 302.06960°

| arg_peri = 67.60587°

| satellite_of = Jupiter

| group = Ananke group

| mean_diameter = ≈{{val|1|u=km}}

| rotation =

| albedo = 0.04 {{small|(assumed)}}

| magnitude = 24.0 (average)

| abs_magnitude = 17.3

}}

S/2022 J 3 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 3 is part of the Ananke group, a cluster of retrograde irregular moons of Jupiter that follow similar orbits to Ananke at semi-major axes between {{convert|19–22|e6km|e6mi|abbr=unit}}, orbital eccentricities between 0.1 and 0.4, and inclinations between 139 and 155°. It has a diameter of about {{cvt|1|km|mi}} for an absolute magnitude of 17.3. The moon has been observed for over 20 years, with the earliest known observation on 26 February 2003.