Jupiter's New Moons

DOMOV Jupiter XVII, XVIII, ...?

Nearly two dozen small irregular jovian satellites have been discovered recently. Many new moons of Saturn in Uranus are also showv letug up.

Callirrhoe (S/1999 J1) was Odkril ga je the Spacewatch project in the Minor Planet Center v letu 2000 od planeta images taken v letu 1999.

Observations with the VLT v letu July 2000 confirmed the existence of S/1999 J1 in refv letued our knowledge of its size in orbita.

Names for the first 11 of these new moons were assigned by the IAU v letu Oct 2002.

We usually say that these irregular satellites are "captured asteroids". But the mechanism of their capture is unclear. The truth is we don't really know how they came to be where they are.

Preliminary Data

IAU Name	oddaljenost	Period	inclination	Eccentricity	Brightness	Polmer	Discoverer	Date	aka
	[x1000 km]	[dnevi]	[degrees]		[magnitudes]
Callisto	1883	17	0	0.01	5.6	2403	Galileo	1610
Themisto	7435	130	46	0.20	21	4	Sheppard et al	2000	S/1975 J1; S/2000 J1
Leda	11094	239	27	0.15	20.2	8	Kowal	1974
Himalia	11480	251	28	0.16	15	93	Perrine	1904
Lysithea	11720	259	29	0.11	18.2	18	Nicholson	1938
Elara	11737	260	28	0.21	16.6	38	Perrine	1905
S/2000 J11	12654	290	29	0.22	22.4	2	Sheppard et al	2000
S/2001 J10	19017	534	147	0.16	23.1	1	Sheppard et al	2002	a543509
Chaldene	20375	591	166	0.16	22.5	1.9	Sheppard et al	2000	S/2000 J10
Iocaste	20733	605	150	0.27	21.8	2.6	Sheppard et al	2000	S/2000 J3
S/2001 J8	20804	609	165	0.48	23	1	Sheppard et al	2002	a503602
S/2001 J9	20876	617	142	0.27	23.1	1	Sheppard et al	2002	a542908
S/2001 J2	20876	615	149	0.30	22.3	2	Sheppard et al	2002	a543208
S/2001 J7	20947	622	146	0.18	22.8	1.5	Sheppard et al	2002	a543107
Harpalyke	21019	618	149	0.20	22.2	2.2	Sheppard et al	2000	S/2000 J5
Praxidike	21162	626	146	0.15	21.2	3.4	Sheppard et al	2000	S/2000 J7
Ananke	21200	631	147	0.17	18.9	15	Nicholson	1951
S/2001 J3	21376	630	150	0.25	22.1	2	Sheppard et al	2002	a506111
Taygete	21734	652	164	0.25	21.9	2.5	Sheppard et al	2000	S/2000 J9
Erinome	21948	661	161	0.35	22.8	1.6	Sheppard et al	2000	S/2000 J4
Carme	22600	692	163	0.21	17.9	20	Nicholson	1938
Isonoe	22806	704	165	0.28	22.5	1.9	Sheppard et al	2000	S/2000 J6
S/2001 J6	22949	715	165	0.29	23.2	1	Sheppard et al	2002	a543104
S/2001 J4	23378	713	150	0.35	22.7	1.5	Sheppard et al	2002	a506111b
S/2001 J11	23449	736	166	0.29	22.7	1.5	Sheppard et al	2002	a506406
Pasiphae	23500	735	147	0.38	16.9	25	Melotte	1908
Megaclite	23521	733	152	0.53	21.7	2.7	Sheppard et al	2000	S/2000 J8
S/2001 J5	23592	732	155	0.45	23	1	Sheppard et al	2002	a506601
Sinope	23700	758	153	0.28	18	18	Nicholson	1914
S/2001 J1	23878	753	152	0.42	22	2	Sheppard et al	2002	a527405
Callirrhoe	24102	774	143	0.13		2.4	Spacewatch	1999	S/1999 J1; 1999 UX18
Kalyke	24164	766	166	0.32	21.8	2.6	Sheppard et al	2000	S/2000 J2

The above is not accurate; JPL has the definitive numbers. More names will be assigned later.

More about these moons

• 11 new moons for Jupiter, od planeta Sheppard, et al
• 11 additional satellites od planeta Sheppard, et al
• new names
• IAUC 7555
• IAUC 7460
• Press release od planeta CfA
• images
• Confirmation by VLT
• S/1975 J 1
• blv letuk animation od planeta IFA
• IAUC 7525

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Open Issues

• Are there yet more small jovian moons yet to be discovered?
• Just what is the definition of "moon" anyway? What's the dividing line between a piece of orbitaing rock in a moon?