Page 51 - Astronomy - October 2017 USA

TRITON
CA: +5 hours

NEPTUNE’S ORBIT

125,000 miles
200,000km
Neptune
To Sun
VOYAGER 2
August 24, 1989
Closest approach
to Neptune: 0 hour
VOYAGER 1
September 5, 1977
Launch

VOYAGER 2
August 20, 1977
Launch VOYAGER 2
January 24, 1986
Closest approach UMBRIEL*
to Uranus: 0 hour
To Sun

Uranus
MIRANDA*
ARIEL*
* Because the moons’ orbits
were nearly face-on to
TITANIA* Voyager 2, all the closest
125,000 miles approaches occurred
ORBIT of the Uranus flyby.
within an hour or so
200,000km
URANUS’
OBERON*

TITAN
CA: –18 hours
DIONE
SATURN’S ORBIT
CA: –2 hours
RHEA
CA: +3 hours
To Sun
TITAN
CA: –18 hours To Sun
MIMAS
CA: –1 hour
Saturn
TETHYS
CA: –2 hours TETHYS
Saturn CA: +3 hours
ENCELADUS
SATURN’S ORBIT CA: +2 hours
MIMAS
CA: +2 hours VOYAGER 2 ENCELADUS 300,000 miles
August 25, 1981 CA: 0 hour
Closest approach 500,000km
300,000 miles RHEA to Saturn: 0 hour
CA: +7 hours
500,000km DIONE
CA: +4 hours
VOYAGER 1
November 12, 1980
Closest approach
to Saturn: 0 hour

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