Messier 34 [SEP] constellation
Messier 34
Messier 34 (also known as M34 or NGC 1039) is an open cluster in the constellation Perseus. It was probably discovered by Giovanni Batista Hodierna before 1654 and included by Charles Messier in his catalog of comet-like objects in 1764. Messier described it as, "A cluster of small stars a little below the parallel of γ (Andromedae). In an ordinary telescope of 3 feet one can distinguish the stars."
Based on the distance modulus of 8.38, this cluster is located at a
NGC 5866
NGC 5866 (also called the Spindle Galaxy or Messier 102) is a relatively bright lenticular or spiral galaxy in the constellation Draco. NGC 5866 was most likely discovered by Pierre Méchain or Charles Messier in 1781, and independently found by William Herschel in 1788.
Measured orbital velocities of its globular cluster system
imply that dark matter makes up only 34±45% of the mass within 5 effective radii;
a notable paucity.
Dust disk.
One of the most outstanding features of NGC 5866 is the