Planetary Nebula IC 2149
The small planetary nebula IC 2149 was discovered in 1906 by the Scottish-American astronomer Williamina Fleming photographically and visually-spectroscopically with an 8 inch telescope. She was an assistant to Edwart Pickering, an astronomy professor at Harward University. [196, 277]
The physical structure of this bipolar planetary nebula is not yet completely sure. It could be a bright ring of gas that we are looking at from the side, or it could be a jet extending northeast and hitting a shock front. The distance to this PN is estimated to be about 1.1 kpc. [449, 450]
|Designations||PN G166.1+10.4: IC 2149, PK 166+10.1, ARO 23, VV 26, VV' 37|
|Right Ascension (J2000.0)||05h 56m 24s|
|Declination (J2000.0)||+46° 06' 17"|
|Dimensions||8.5" (optical), 7." (radio)|
|Radial Velocity||-30.7 km/s ± 2.1 km/s|
|Expansion Velocity||< 10.0 km/s (O-III), 20. km/s (N-II)|
|C-Star Designations||AG82 51, BD +46 1067, GCRV 3681, HD 39659, PLX 1357|
|C-Star Magnitude||11.28 mag (B filter), 11.59 mag (V filter)|
|C-Star Spectral Type||O4 (f), Of(H)|
The planetary nebula IC 2149 is located in the constellation Auriga, which is best visible from September to April.
Description pending ...