A control network for Triton has been computed using a bundle-type analytical triangulation program. The network contains 105 points that were measured on 57 Voyager 2 pictures. The adjustment contained 1,010 observation equations and 382 normal equations and resulted in a standard measurement error of 13.36 micrometers. The authors determined coordinates of the control points, the camera orientation angles at the times when the pictures were taken, and Triton's mean radius. A separate statistical analysis confirmed Triton's radius to be 1352.6, plus or minus 2.4 km. Attempts to tie the control network around the satellite were unsuccessful because discontinuities exist in high-resolution coverage between 66 degrees and 289 degrees longitude, north of 38 degrees latitude, and south of 78 degrees latitude.
Davies, Merton E., Patricia Rogers, and Tim R. Colvin, A Control Network of Triton. Santa Monica, CA: RAND Corporation, 1991. https://www.rand.org/pubs/notes/N3425.html. Also available in print form.
Davies, Merton E., Patricia Rogers, and Tim R. Colvin, A Control Network of Triton, Santa Monica, Calif.: RAND Corporation, N-3425-JPL, 1991. As of September 08, 2021: https://www.rand.org/pubs/notes/N3425.html