Actions NORAD ID COSPAR ID Name Source Period Inclination (deg) Apogee (km) Perigee (km) Eccentric Radar Cross Section Orbit Memo Launch Time Deacy Time Decay? Debris? Rocket?
1 1957-001A SL-1 R/B CIS 96.19 65.10 938 214 0.05 0.00 1957-10-04 1957-12-01 true true
2 1957-001B SPUTNIK 1 CIS 96.10 65.00 945 227 0.05 0.00 1957-10-04 1958-01-03 true
3 1957-002A SPUTNIK 2 CIS 103.74 65.33 1,659 211 0.10 0.00 1957-11-03 1958-04-14 true
4 1958-001A EXPLORER 1 US 88.48 33.15 215 183 0.00 0.00 1958-02-01 1970-03-31 true
5 1958-002B VANGUARD 1 US 132.79 34.25 3,837 650 0.18 0.00 1958-03-17 NULL
1576 1958-002C VANGUARD DEB US 123.45 34.22 3,027 642 0.15 0.00 1958-03-17 NULL true
6 1958-003A EXPLORER 3 US 103.60 33.50 1,739 117 0.11 0.00 1958-03-26 1958-06-28 true
7 1958-004A SL-1 R/B CIS 102.74 65.14 1,571 206 0.09 0.00 1958-05-15 1958-12-03 true true
8 1958-004B SPUTNIK 3 CIS 88.43 65.06 255 139 0.01 0.00 1958-05-15 1960-04-06 true
9 1958-005A EXPLORER 4 US 92.81 50.25 585 239 0.03 0.00 1958-07-26 1959-10-23 true
10 1958-006A SCORE US 98.21 32.29 1,187 159 0.07 0.00 1958-12-18 1959-01-21 true
11 1959-001A VANGUARD 2 US 121.57 32.87 2,948 553 0.15 0.00 1959-02-17 NULL
14934 1959-001D VANGUARD DEB US 89.81 32.78 273 257 0.00 0.00 1959-02-17 2007-10-23 true true
5807 1959-001C VANGUARD DEB US 127.90 32.90 3,497 562 0.17 0.00 1959-02-17 1982-11-22 true true
12 1959-001B VANGUARD R/B US 125.95 32.90 3,336 554 0.17 0.00 1959-02-17 NULL true
13 1959-002A DISCOVERER 1 US 92.70 90.00 697 114 0.04 0.00 1959-02-28 1959-03-03 true
14 1959-003A DISCOVERER 2 US 90.40 89.90 346 239 0.01 0.00 1959-04-13 1959-04-26 true
15 1959-004A EXPLORER 6 US 762.25 46.95 42,276 251 0.76 0.00 1958-12-14 1961-06-30 true
16 1958-002A VANGUARD R/B US 137.36 34.28 4,230 651 0.20 0.00 1958-03-17 NULL true
17 1959-004B THOR ABLE R/B US 718.96 47.10 40,215 198 0.75 0.00 1958-12-14 1961-06-30 true true
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