Leda (moon)

Leda
Discovery
Discovered by	Charles T. Kowal
Discovery date	September 11, 1974
Orbital characteristics
Mean orbit radius	11,160,000 km
Eccentricity	0.16
Orbital period	240.92 d (0.654 a)
Average orbital speed	3.4 km/s
Inclination	27.46° (to the ecliptic); 29.01° (to Jupiter's equator)
Satellite of	Jupiter
Physical characteristics
Mean radius	10 km
Surface area	~1250 km²
Volume	~4200 km³
Mass	1.1×1016 kg
Mean density	2.6 g/cm³ (assumed)
Surface gravity	~0.0073 m/s2 (0.001 g)
Escape velocity	~0.012 km/s
Albedo	0.04 (assumed)
Temperature	~124 K
Apparent magnitude	20.2

Leda or Jupiter XIII, is a moon of Jupiter. Unlike many moons, it is not a sphere. Charles T. Kowal found it working at the Mount Palomar Observatory on September 14, 1974. He took photographs for three nights September 11 through 13. Leda is in all of the photographs.^[1]^[4] The moon'S name come from Leda in Greek mythology. She was one of Zeus's lovers. Zeus is the Greek equivalent of Jupiter. Zeus came to Leda in the shape of a swan. Kowal suggested the name and the IAU supported it in 1975.^[5]

Leda belongs to the Himalia group. They are five moons orbiting between 11,000,000 and 13,000,000 km from Jupiter at an inclination of about 27.5°.^[2] The orbital elements given here are as of January 2000, but they are changing a lot because gravity effects from the sun and planets.

References

↑ ^1.0 ^1.1 Kowal, C. T.; Aksnes, K.; Marsden, B. G.; Roemer, E. (1974). "Thirteenth satellite of Jupiter". Astronomical Journal. 80: 460–464. doi:10.1086/111766.
↑ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 Jacobson, R. A. (2000). "The orbits of outer Jovian satellites". Astronomical Journal. 120 (5): 2679–2686. Bibcode:2000AJ....120.2679J. doi:10.1086/316817. S2CID 120372170.
↑ "Leda Statistics". Retrieved 2007-10-01.
↑ IAUC 2702: Probable New Satellite of Jupiter 1974 September 20 (discovery)
↑ Marsden, B. G. (7 October 1974). "Satellites of Jupiter". IAUC Circular. 2846.

Other websites

Leda Profile Archived 2015-08-03 at the Wayback Machine by NASA's Solar System Exploration
David Jewitt pages
Scott Sheppard pages

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[Kowal_1974-1] 1.0 ^1.1 Kowal, C. T.; Aksnes, K.; Marsden, B. G.; Roemer, E. (1974). "Thirteenth satellite of Jupiter". Astronomical Journal. 80: 460–464. doi:10.1086/111766.

[Jacobson_2000-2] 2.0 ^2.1 ^2.2 ^2.3 ^2.4 Jacobson, R. A. (2000). "The orbits of outer Jovian satellites". Astronomical Journal. 120 (5): 2679–2686. Bibcode:2000AJ....120.2679J. doi:10.1086/316817. S2CID 120372170.

[magnitude-3] "Leda Statistics". Retrieved 2007-10-01.

[IAUC_2702-4] IAUC 2702: Probable New Satellite of Jupiter 1974 September 20 (discovery)

[IAUC_2846-5] Marsden, B. G. (7 October 1974). "Satellites of Jupiter". IAUC Circular. 2846.

[1]

v t e Moons of Jupiter
Listed in increasing approximate distance from Jupiter
Inner moons (4)	Metis Adrastea Amalthea Thebe
Galilean moons (4)	Io Europa Ganymede Callisto
Themisto group (1)	Themisto
Himalia group (9)	Leda Ersa S/2018 J 2 Himalia Pandia Lysithea Elara S/2011 J 3 Dia
Carpo group (2)	S/2018 J 4 Carpo
Valetudo group (1)	Valetudo
Ananke group (26)	Euporie Jupiter LV Eupheme S/2021 J 3 Jupiter LII Jupiter LIV Mneme Euanthe S/2003 J 16 Harpalyke Orthosie S/2022 J 3 Helike S/2021 J 2 Praxidike Jupiter LXIV S/2021 J 1 S/2003 J 12 Jupiter LXVIII Thelxinoe Thyone S/2003 J 2 Ananke Iocaste Hermippe Jupiter LXX
Carme group (30)	S/2022 J 1 S/2022 J 2 S/2016 J 3 Pasithee Jupiter LXIX S/2021 J 6 S/2003 J 24 Chaldene Jupiter LXIII Isonoe S/2021 J 4 Kallichore Erinome Kale Eirene Aitne Eukelade Arche Taygete Jupiter LXXII Carme Herse Jupiter LXI Jupiter LI S/2003 J 9 Jupiter LXVI Kalyke S/2018 J 3 S/2021 J 5 S/2003 J 10
Pasiphaë group (18)	Philophrosyne Eurydome Jupiter LVI S/2003 J 4 S/2016 J 4 Jupiter LXVII Hegemone Pasiphaë Sponde Megaclite Cyllene Sinope Jupiter LIX Aoede Autonoe Callirrhoe S/2003 J 23 Kore
Related page	Rings of Jupiter
Category