All Tables

Table 1: Various statistics regarding the data obtained with the 2.2-m MPG-WFI system on three nights (2/3 June 2002, 23/24 and 24/25 Jan. 2003): i) the number of fields and the total sky coverage; ii) the limiting magnitude in $3\times 3$ binning mode and the seeing conditions during the three nights; iii) the total number of asteroid detections in all binning modes. They are followed by two groups: the ONS (One Night Stands) are observations of unidentified asteroids made in the course of only one night. The second group are known asteroids; the sum of these two groups is smaller than the number of detections because some fields from the first night were repeated on the second; iv) the total number of discoveries during the two runs: these are the subset of the known asteroids that were previously unknown and that were observed on two nights, a necessary condition established by the MPC in order to receive credit. It is interesting to notice that a large number of detections comes from unknown asteroids (ONS): the relative number of objects was especially high during the June run because we observed regions south of the ecliptic which are not easily accessible to northern observers. The numbers from the June run are affected by rapid moving clouds during the exposures.
Table 2: Orbital elements of the two new NEAs, epoch, distance from Earth at the epoch of discovery, observed arclength. The last line gives the absolute magnitude H: a value of 23.8 corresponds to an object of about 45-105 m, while H = 17.3 indicates a body between 1 and 2 km.
Table 3: A listing of all the NEAs and comets successfully followed-up with the NTT. The upper part of the table refers to the first run in June 2002: a total of 19 NEAs and 2 relatively bright comets were identified. The Rec in the third column stands for recovery and means that the object was located for the first time after the discovery apparition. In the second run in January 2003 (lower part of the table) 30 NEAs and 6 comets were successfully followed-up. The predicted magnitude ranged between 15 and 24.0 V. Most of these objects were observed in unfiltered mode, a few with an R filter. A (*) indicates that the object was observed at less than 60 deg elongation from the sun.
Table 4: In this table we report: i) the number of ONS which we defined in Table 1; ii) the total number of designated objects, old and new Desig. objs; iii) the number of new NEAs; iv) the number of known NEAs detected accidentally during the survey; v) the ratio between new and known NEAs detections; vi) the total list of discoveries (essentially, MBO discoveries); vii) the nominal limiting magnitude of the system; viii) the initial time and ix) the final time for the statistics; x) the total number of clear nights (even clear for just one hour) in which these observations were obtained.
Table 5: SW-II observing performance between Jan. 17 and Feb. 17, 2003.