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 | |
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
- ↑ a b NASA Jovian Satellite Fact Sheet
before | Jupiter moons | after that |
S / 2003 J 12 | S / 2003 J 16 |
S / 2003 J 19 |