Vector cycles used for past missions

History vectors are from ground measuring stations and are made available some time after landing. They provide the most accurate data because there are around 40 vector samples per day. These vectors were not provided to us in electronic format during the early missions (pre STS-59).

NAVCON vectors are used primarily for real-time planning, so they become available during the mission. We only get one of these vectors per day so the number of samples means that the data produced with them is not as reliable around the times of maneuvers.

Currently, the missions in this system that have History vectors are STS-26, 29, 30, 31, 32, 34, 35, 37, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 52, 53, 54, 55, 56, 57, 59, 63, 64, 65, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133.

Currently, the missions in this system that use NAVCON vectors are STS-43, 51, 58, 60, 61, 62, 66, 67.

The ISS vectors are non-predicted vectors received in e-mail.