UPSA Object Registry

Registry · solar system

Prometheus

Natural satellite JPL Horizons

Mass: 0.0014 1e20 kg
Density: 0.27 g cm^-3
Orbital period: 0.61299 d
Geometric albedo: 0.5

Also known as

2 identifiers

Horizons 616SXVI

Recorded parameters

8 quantities with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Mass	0.0014	1e20 kg		Mass (10^20 kg )	JPL Horizons	JPL Horizons on-line ephemeris system
Density	0.27	g cm^-3		Density (g cm^-3)	JPL Horizons	JPL Horizons on-line ephemeris system
Orbital period	0.612986	d		Orbital period	JPL Horizons	JPL Horizons on-line ephemeris system
Geometric albedo	0.5			Geometric Albedo	JPL Horizons	JPL Horizons on-line ephemeris system
Eccentricity e	0.0024	e		Eccentricity, e	JPL Horizons	JPL Horizons on-line ephemeris system
Inclination i deg	0	deg		Inclination, i (deg)	JPL Horizons	JPL Horizons on-line ephemeris system
Radius km	68.2	km		Radius (km)	JPL Horizons	JPL Horizons on-line ephemeris system
Semi major axis a km	139.35	km		Semi-major axis, a (km)	JPL Horizons	JPL Horizons on-line ephemeris system

Provenance

where this card came from

Archive	Read at (UTC)	Record
JPL Horizons	2026-08-14 17:10	open at source

Machine-readable: /api/v1/object/prometheus · Registry entry updated 2026-08-14.