??? (???)

???
???
??? ????	??????? ??????
??? ??????	? ?????? ????
??????????
?????	/ ? a? . o? /
???? ?????	Jupiter I
??????	Ionian
???? ?????????
Periapsis	420 000 km ( 0.002 807 AU )
Apoapsis	423 400 km ( 0.002 830 AU )
?????? ????? ????????	421 700 km ( 0.002 819 AU )
?????? ??????	0.0041
???? ?????	1.769 137 786 d ( 152 853 .5047 s , 42.459 306 86 h )
???????? ????????? ; ???????	17.334 km/s
??????	0.05° (to Jupiter's equator) ; 2.213° (to the ecliptic )
???????	??????
?????? ????????
???????	3,660.0?×?3,637.4?×?3,630.6 km
????? ?????	1 821 .6 ± 0.5 km (0.286 Earths)
????? ????	41 910 000 km 2 (0.082 Earths)
????	2.53 × 10 10 km 3 (0.023 Earths)
???	(8.931 938 ± 0.000 018 ) × 10 22 kg (0.015 Earths)
????? ???????	3.528 ± 0.006 g/cm 3
??? ???????	1.796 m/s 2 (0.183 g )
??? ; ?????? ???????	0.3755 ± 0.0045 (estimate)
Escape velocity	2.558 km/s
Rotation period	synchronous
???????? ???????? ; ??????	271 km/h
?????	0.63 ± 0.02
????????? ????	5.02 ( opposition )
Atmosphere
??? ??????	trace
??? ??????	90% ????? ????????

??? ?????????? : Io ? ?????? ????????? ???????. ??????? ?????? ????? ???? ??????????.

?????????

^ EYE -oh , or as ??????? : ??
^ Thomas, P. C.; et al. (1998). "The Shape of Io from Galileo Limb Measurements". Icarus . 135 (1): 175?180. Bibcode : 1998Icar..135..175T . doi : 10.1006/icar.1998.5987 .
^ ^??? ^??? ^??? ^??? Yeomans, Donald K. (13 July 2006). Planetary Satellite Physical Parameters . JPL Solar System Dynamics.
^ Showman, Adam P.; Malhotra, Renu (October 1999). "The Galilean Satellites". Science . 286 (5437): 77?84. doi : 10.1126/science.286.5437.77 . PMID 10506564 .
^ Classic Satellites of the Solar System . Observatorio ARVAL. ???????????28 September 2007.
^ Rathbun, J. A.; Spencer, J.R.; Tamppari, L.K.; Martin, T.Z.; Barnard, L.; Travis, L.D. (2004). "Mapping of Io's thermal radiation by the Galileo photopolarimeter-radiometer (PPR) instrument". Icarus . 169 (1): 127?139. Bibcode : 2004Icar..169..127R . doi : 10.1016/j.icarus.2003.12.021 .