UPSA Object Registry

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Epimetheus

Natural satellite JPL Horizons

Density: 0.63 g cm^-3
Orbital period: 0.69459 d
Geometric albedo: 0.5

Also known as

2 identifiers

Horizons 611SXI

Recorded parameters

8 quantities with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Density	0.63	g cm^-3		Density (g cm^-3)	JPL Horizons	JPL Horizons on-line ephemeris system
Orbital period	0.69459	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	0.009	e		Eccentricity, e	JPL Horizons	JPL Horizons on-line ephemeris system
Inclination i deg	0.34	deg		Inclination, i (deg)	JPL Horizons	JPL Horizons on-line ephemeris system
Radius km	64.9	km		Radius (km)	JPL Horizons	JPL Horizons on-line ephemeris system
Rotational period	Synchronous			Rotational period	JPL Horizons	JPL Horizons on-line ephemeris system
Semi major axis a km	151.422	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 17:09	open at source

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