S / 2003 J 16

S / 2003 J 16
Central body	Jupiter
Properties of the orbit
Major semi-axis	20,956,000 km
Periapsis	16,207,000 km
Apoapsis	25,705,000 km
eccentricity	0.227
Orbit inclination	148.5 °
Orbital time	616.33 d
Mean orbital velocity	2.47 km / s
Physical Properties
Apparent brightness	23.3 mag
Medium diameter	≈ 2 km
Dimensions	≈ 1.5 × 10 13 kg
Acceleration of gravity on the surface	≈ 0 m / s 2
Escape speed	≈ 0 m / s
discovery
Explorer	IFA Hawaii
Remarks	February 6, 2003

S / 2003 J 16 is one of the smaller moons of the planet Jupiter .

discovery

S / 2003 J 16 was discovered by astronomers at the University of Hawaii on February 6, 2003 . The moon has not yet been given an official name - the moons of Jupiter are usually female figures from Greek mythology - but is provisionally designated as S / 2003 J 16 in accordance with the system of the International Astronomical Union (IAU).

Orbit data

S / 2003 J 16 orbits Jupiter at an average distance of 20,957,000 km in 616 days, 8 hours and 38 minutes. The track has an eccentricity of 0.2246. With an inclination of 148.5 ° to the Laplace plane , the orbit is retrograde; that is, the moon moves around the planet against the direction of rotation of Jupiter.

Due to its orbit characteristics, S / 2003 J 16 is assigned to the Ananke group , named after the Jupiter moon Ananke .

Physical data

S / 2000 J 16 has a diameter of about 2 km. Its density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. It has a very dark surface with an albedo of 0.04, i.e. that is, only 4% of the incident sunlight is reflected.

Web links

• MPEC 2003-G18: S / 2003 J 16 April 3, 2003 (discovery)
• IAUC 8116: Satellites of Jupiter and Saturn April 11, 2003 (discovery)

Individual evidence

1. ↑ ^{a b} NASA Jovian Satellite Fact Sheet

before	Jupiter moons	after that
S / 2003 J 12	S / 2003 J 16	S / 2003 J 19