Deep-space Rendezvous
| Date (GMT) | Spacecraft | Event | Remarks |
|---|---|---|---|
| 11 January | Lunar Prospector | Selenocentric orbit injection | |
| 23 January | NEAR | Flyby of the Earth | Closest approach: 540 kilometres (340 mi) |
| 10 February | Galileo | 5th flyby of Europa | |
| 29 March | Galileo | 6th flyby of Europa | |
| 26 April | Cassini | 1st flyby of Venus | Gravity assist |
| 13 May | AsiaSat 3/HGS 1 comsat | 1st flyby of the Moon | First use of moon's gravity for a recovery mission; Closest approach: 6,200 kilometres (3,900 mi) |
| 31 May | Galileo | 7th flyby of Europa | |
| 1 June | AsiaSat 3/HGS 1 | 2nd flyby of the Moon | Closest approach: 34,300 kilometres (21,300 mi) |
| 21 July | Galileo | 8th flyby of Europa | |
| 26 September | Galileo | 9th flyby of Europa | |
| 22 November | Galileo | 10th flyby of Europa | |
| 20 December | Nozomi | 1st flyby of the Earth | |
| 23 December | NEAR | Flyby of 433 Eros | Closest approach: 3,827 kilometres (2,378 mi) |
Read more about this topic: 1998 In Spaceflight