The Palomar-Leiden survey of faint minor planets: Conclusion

The results are given of a revision and small extension of the Palomar-Leiden Survey of minor planets. The majority of the class 4 orbits in the original Survey have been rederived using positions measured from the second plate of each blink pair, and in some cases the orbits could be raised to class 1 quality by the identification of observations in the second month. By using the concept of "e- assumed orbits," meaningful—if not always accurate—orbits are given for the cases that previously had to be rejected. The extension to the Survey consists of 170 new objects found in the field used for photometric calibration purposes. The total number of orbits in the Survey is 2403, and a tabulation is given of the 1198 orbits that supplement or amend those in the original Survey. A listing is included of the identifications of Palomar-Leiden objects with minor planets observed at other oppositions.