Planetary Nebula Humason 1-2
The planetary nebula Hu 1-2 (PN G086.5-08.8, PK 086-08.1), was discovered on 11 October 1920 by Milton Lasell Humason with spectrograms made with the 10 inch Cooke telescope on Mount Wilson Observatory. On November 9 in the same year he discovered another PN (Hu 1-1). He wrote: «Edwin Hubble observed both objects visually with the 60 inch reflector on December 9 1920. Each appeared as a small disk about 5" in diameter, the first being irregular in outline, the second nearly circular.»  However, there must have been a mix-up as Hu 1-1 has a round shape and Hu 1-2 is bipolar.
Hu 1-2 is bipolar, hour-glass shaped nebula with fast, highly collimated outflows that have a speed of >340 km/s. This is much higher than in most PNe. Neither the morphology nor the kinematics of the central, z-shaped innermost region can be simply described as a waist or torus located between the two bipolar lobes. The knotty morphology of this region are suggestive of a ‘broken’ equatorial ring. The PN probably experienced notable violent dynamical processes during its formation. It is not clear whether the central star is a binary. The age is estimated to be less than 1100 years and the distance to 3.5 kpc. Apparent brightness: V 12.0 mag, J 11.6 mag, H 11.6 mag, K 10.9 mag. 
|Designations||PN G086.5-08.8: Hu 1-2, PK 86-08.1, Anon.21h31m, ARO 89, VV 267, VV' 553|
|Right Ascension (J2000.0)||21h 33m 08s|
|Declination (J2000.0)||+39° 38' 01"|
|Dimensions||8.3" (optical), 1.7" (radio)|
|Radial Velocity||-9.0 km/s ± 8.1 km/s|
|Expansion Velocity||29.0 km/s (O-III), 32. km/s (N-II)|
|C-Star Designations||AG82 432|
|C-Star Magnitude||17.32 mag (V filter)|
The planetary nebula Hu 1-2 is located in the Milky Way of the constellation Cygnus. In the months March through December it can be seen best.