My current update of the MAP Database contains 469 asteroids, then 27 more than
the previous database on June 30,2008. By Gerard Faure..

It is downloable at :
http://astrosurf.com/aude/map/MAP_DATABASE_measures.zip

 

and the recapitulative list of the MAP Database is at :
http://astrosurf.com/aude/map/MAP_DATABASE_recap.htm

 

This MAP database nows contains 5138 measures (previously 4991 measures),
than 147 complementary measures, mostly made by Gérard Faure, Roger Harvey
et Andrew Salthouse.

In addition to the measures of the 27 new asteroids entered in the MAP
database, many new measures have been made for 37 old MAP objets.

On the total of 469 asteroids of the database, 84 of them (17% of the
total) now have their original difference of magnitude explained by the
natural light
variability or by some inaccuracies of measures and then now have no need
of new measures, TANDIS QUE for about two tens objects, the MAP already has
a good estimate of the difference of H magnitude. The revised H magnitude
has been published for 16 asteroids in the Minor Planet Bulletin 34-4.

On the 385 asteroids interested by new measures, the actual magnitude
differences are :
< 0,3 mag for 45 asteroids
0,3 mag for 35 asteroids
0,4 mag for 57 asteroids
0,5 mag for 71 asteroids
0,6 mag for 51 asteroids
0,7 mag for 36 asteroids
0,8 mag for 25 asteroids
0,9 mag for 22 asteroids
1,0 mag for 10 asteroids

1,0 mag for 12 asteroids

indefined mag. 5 asteroids

For 213 of them (45% of the total), the active lightcurve makers have
permitted the knowledge of the data of asteroid lightcurve amplitudes.

A part of the 469 objects of the MAP already have been observed on some
oppositions :

0 opposition for 2 asteroids
1 opposition for 335 asteroids
2 oppositions for 95 asteroids
3 oppositions for 25 asteroids
4 oppositions for 8 asteroids
5 oppositions for 2 asteroids
6 oppositions for 2 asteroids

Nearly one hundred of MAP asteroids already observed during two oppositions
wait their third observed opposition to obtain probably the definitive
confirmation of their H magnitude difference and the publication of the
results !
Then we shall be very interested by your new measures of the MAP objects in
the future !

AUDE WebPages
Gerard Faure (8297 gerardfaure)
http://www.astrosurf.com/map