Catalogue · 142 objects
Orbit class, mission and constellation are derived · methodology
Catalogue rows come from CelesTrak SATCAT; perigee, apogee and inclination shown here are catalogue values (the detail page shows the latest element set). Facet counts are computed live over the filtered set.
| HEO |
| 433 / 39,918 km |
| 65.06° |
| 25 Dec 1970↓ 22 Dec 1975 |
| Commonwealth of Independent States (former USSR) |
| Russia |
| MOLNIYA 1-16 | 4779 | 1970-101A | Payload | Decayed | HEO | 202 / 40,140 km | 65.18° | 27 Nov 1970↓ 25 Nov 1975 | Commonwealth of Independent States (former USSR) | Russia |
| OPS 7033 (VELA 11) | 4368 | 1970-027B | Payload | Unknown | HEO | 19,226 / 203,385 km | 86.19° | 08 Apr 1970 | United States | United States |
| OPS 7044 (VELA 12) | 4366 | 1970-027A | Payload | Unknown | HEO | 12,296 / 210,679 km | 81.23° | 08 Apr 1970 | United States | United States |
| MOLNIYA 1-13 | 4336 | 1970-013A | Payload | Decayed | HEO | 151 / 39,874 km | 65.37° | 19 Feb 1970↓ 29 Sept 1975 | Commonwealth of Independent States (former USSR) | Russia |
| EXPLORER 41 (IMP-5) | 3990 | 1969-053A | Payload | Decayed | HEO | 3,926 / 172,901 km | 84.55° | 21 Jun 1969↓ 23 Dec 1972 | United States | United States |
| OPS 6911 (VELA 10) | 3955 | 1969-046E | Payload | Unknown | HEO | 14,949 / 208,267 km | 62.55° | 23 May 1969 | United States | United States |
| OPS 6909 (VELA 9) | 3954 | 1969-046D | Payload | Unknown | HEO | 24,401 / 198,251 km | 89.09° | 23 May 1969 | United States | United States |
| OV5-9 | 3952 | 1969-046C | Payload | Unknown | HEO | 15,484 / 113,065 km | 32.93° | 23 May 1969 | United States | United States |
| ERS 26 (OV5-6) | 3951 | 1969-046B | Payload | Unknown | HEO | 15,461 / 113,085 km | 32.95° | 23 May 1969 | United States | United States |
| ERS 29 (OV5-5) | 3950 | 1969-046A | Payload | Unknown | HEO | 16,684 / 112,017 km | 33.99° | 23 May 1969 | United States | United States |
| APOLLO 8 | 3626 | 1968-118A | Payload | Decayed | HEO | 215 / 544,356 km | 30.71° | 21 Dec 1968↓ 27 Dec 1968 | United States | United States |
| HEOS-A1 | 3595 | 1968-109A | Payload | Decayed | HEO | 21,119 / 201,687 km | 61.78° | 05 Dec 1968↓ 28 Oct 1975 | European Space Research Organization | — |
| OGO 5 | 3138 | 1968-014A | Payload | Decayed | HEO | 105 / 45,567 km | 49.09° | 04 Mar 1968↓ 02 Jul 2011 | United States | United States |
| EXPLORER 34 (IMP-4) | 2817 | 1967-051A | Payload | Decayed | HEO | 1,593 / 209,613 km | 71.56° | 24 May 1967↓ 03 May 1969 | United States | United States |
| ERS 27 (OV5-1) | 2769 | 1967-040E | Payload | Unknown | HEO | 9,968 / 109,725 km | 37.51° | 28 Apr 1967 | United States | United States |
| ERS 20 (OV5-3) | 2768 | 1967-040D | Payload | Unknown | HEO | 10,206 / 109,619 km | 35.12° | 28 Apr 1967 | United States | United States |
| ERS 18 | 2767 | 1967-040C | Payload | Unknown | HEO | 10,754 / 109,079 km | 35.17° | 28 Apr 1967 | United States | United States |
| OPS 6679 (VELA 8) | 2766 | 1967-040B | Payload | Unknown | HEO | 57,110 / 167,043 km | 36.49° | 28 Apr 1967 | United States | United States |
| OPS 6638 (VELA 7) | 2765 | 1967-040A | Payload | Unknown | HEO | 52,481 / 169,913 km | 41.69° | 28 Apr 1967 | United States | United States |
| MOLNIYA 1-4 | 2501 | 1966-092A | Payload | Decayed | HEO | 181 / 39,911 km | 64.98° | 20 Oct 1966↓ 11 Sept 1968 | Commonwealth of Independent States (former USSR) | Russia |
| EXPLORER 33 (AIMP-D) | 2258 | 1966-058A | Payload | Unknown | HEO | 265,679 / 480,762 km | 24.14° | 01 Jul 1966 | United States | United States |
| OGO 3 | 2195 | 1966-049A | Payload | Decayed | HEO | 16,019 / 106,308 km | 76.32° | 07 Jun 1966↓ 14 Sept 1981 | United States | United States |
| MOLNIYA 1-2 | 1621 | 1965-080A | Payload | Decayed | HEO | 560 / 39,734 km | 64.93° | 14 Oct 1965↓ 17 Mar 1967 | Commonwealth of Independent States (former USSR) | Russia |
| ERS 17 | 1460 | 1965-058C | Payload | Decayed | HEO | 566 / 111,791 km | 36.88° | 20 Jul 1965↓ 01 Jul 1968 | United States | United States |
| OPS 6564 (VELA 6) | 1459 | 1965-058B | Payload | Unknown | HEO | 54,514 / 169,110 km | 41.62° | 20 Jul 1965 | United States | United States |
| OPS 6577 (VELA 5) | 1458 | 1965-058A | Payload | Unknown | HEO | 50,778 / 172,059 km | 29.88° | 20 Jul 1965 | United States | United States |
| EXPLORER 28 (IMP-3) | 1388 | 1965-042A | Payload | Decayed | HEO | 32,289 / 227,451 km | 53.61° | 29 May 1965↓ 04 Jul 1968 | United States | United States |
| EXPLORER 21 (IMP-2) | 889 | 1964-060A | Payload | Decayed | HEO | 917 / 94,291 km | 33.72° | 04 Oct 1964↓ 30 Jan 1966 | United States | United States |
| OGO 1 | 879 | 1964-054A | Payload | Decayed | HEO | 345 / 141,789 km | 54.97° | 05 Sept 1964↓ 29 Aug 2020 | United States | United States |
| ERS 13 | 838 | 1964-040C | Payload | Decayed | HEO | 319 / 103,994 km | 38.30° | 17 Jul 1964↓ 01 Jan 1966 | United States | United States |
| OPS 3674 (VELA 4) | 837 | 1964-040B | Payload | Unknown | HEO | 32,089 / 173,878 km | 48.46° | 17 Jul 1964 | United States | United States |
| OPS 3662 (VELA 3) | 836 | 1964-040A | Payload | Unknown | HEO | 44,352 / 162,132 km | 53.19° | 17 Jul 1964 | United States | United States |
| EXPLORER 18 (IMP-1) | 693 | 1963-046A | Payload | Decayed | HEO | 4,386 / 192,044 km | 35.19° | 27 Nov 1963↓ 30 Dec 1965 | United States | United States |
| VELA 1 | 692 | 1963-039C | Payload | Unknown | HEO | 48,562 / 170,602 km | 33.77° | 17 Oct 1963 | United States | United States |
| ERS 12 | 675 | 1963-039B | Payload | Decayed | HEO | 953 / 102,374 km | 35.90° | 17 Oct 1963↓ 05 Feb 1966 | United States | United States |
| VELA 2 | 674 | 1963-039A | Payload | Unknown | HEO | 33,707 / 184,057 km | 47.86° | 17 Oct 1963 | United States | United States |
| EXPLORER 14 (SERB 53A) | 432 | 1962-051A | Payload | Decayed | HEO | 23 / 98,756 km | 24.10° | 02 Oct 1962↓ 28 May 1988 | United States | United States |
| EXPLORER 12 | 170 | 1961-020A | Payload | Decayed | HEO | 693 / 76,977 km | 33.83° | 15 Aug 1961↓ 30 Sept 1963 | United States | United States |
| LUNA 3 | 21 | 1959-008A | Payload | Decayed | HEO | 500 / 499,998 km | 55.00° | 04 Oct 1959↓ 20 Apr 1960 | Commonwealth of Independent States (former USSR) | Russia |
| EXPLORER 6 | 15 | 1959-004A | Payload | Decayed | HEO | 251 / 42,276 km | 46.95° | 07 Aug 1959↓ 30 Jun 1961 | United States | United States |