Free Access
| Telescope | 
|
|
Years | Source |
| (a) Digitized photographic plates: | ||||
| Asiago Schmidt | 24 | 8 | 1968.8-1993.1 | (1) |
| Calar Alto Schmidt | 43 | 15 | 1983.0-2000.7 | (1) |
| Calar Alto 1.2 m | 8 | 5 | 1976.7-1982.6 | (1) |
| Palomar Schmidt | 4 | 4 | 1948.7-1989.7 | (1), (3) |
| Sonneberg 40 cm | 9 | 1 | 1992.2-1992.6 | (1) |
| Tautenburg Schmidt | 362 | 77 | 1961.5-1997.0 | (1) |
| (b) CCD observations: | ||||
| Calar Alto 2.2 m | 3 | 2 | 2008.7-2009.3 | (1) |
| CFHT 3.6 m | 1 | 1 | 1993.8 | (1) |
| INT (WFS) | 5 | 1 | 1998.8 | (1) |
| INT | 522 | 6 | 1999.7-2003.7 | (2) |
| Kitt Peak 4 m | 10 | 2 | 2000.8,2001.7 | (4) |
| Skinakas 60 cm | 5 | 1 | 2007.6 | (1) |
| Tautenburg Schmidt | 30 | 14 | 2006.1-2009.7 | (1) |
| (c) Original data from Sharov et al. (1998): | ||||
| four other telescopes |  150
|
84 | 1969.0-1997.7 | (5) |
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