Pre-discovery rendezvous of 2004 YY23 and C/2004 U1
- Dear colleagues,
New peculiar asteroid 2004 YY23 with a cometary orbit was discovered
on Dec. 22 and became bright as 16 mag in late December when passing
near by the earth.
Just before the discovery, it must have been very close by Comet
C/2004 U1, which was just in outburst and bright as 13 mag.
2004 Dec. 18 12h UT 0.509 deg ( 30.5 arcmin)
C/2004 U1 ( LINEAR ) 07h13m.3 +49o21' 13.7 mag
2004 YY23 07h16m.2 +49o31' 17.0 mag