1.
Zeta Boötis
Boötis is often used to test the performance of new high resolution imaging techniques.
19 points - added 13 years ago by kris -
2.
WNC4
In 1991 the separation between the components was measured at 51".7.
18 points - added 13 years ago by kris -
3.
P Cygni
Luminous blue variable stars like P Cygni are very rare and short lived.
17 points - added 13 years ago by kris -
4.
Cygnus X-1
It was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources seen from Earth.
16 points - added 13 years ago by kris -
5.
HE0107-5240
15 points - added 13 years ago by kris -
6.
HR 465
14 points - added 13 years ago by kris -
7.
Nemesis
13 points - added 13 years ago by kris -
8.
OGLE-TR-122b
12 points - added 13 years ago by kris -
9.
BPM 37093
11 points - added 13 years ago by kris -
10.
Sun
Because its visible radiation is most intense in the yellow-green portion of the spectrum.
0 points - added 13 years ago by kris -
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Top 10 Favorite Astronomical Objects, Stars are especially marked