Planetary Nebula Baade 1
History
This planetary nebula was discovered in the early 1930s by German astronomer Walter Baade with the 1m reflector telescope at the Hamburg observatory in Bergedorf. Due to the small angular extent it was initially not possible to determine whether it was a real planetary nebula or an abnormal extragalactic nebula (galaxy). In 1931 Baade was appointed to the Mount Wilson Observatory in California. Recordings with the 2.5m reflector telescope finally confirmed its nature as PN in 1935. [452, 453]
Physical Properties
The apparent brightness of the nebula is 14.6 mag in the B band and 14.3 mag in the V band. The diameter is 38 arc seconds and the distance is 2.5 kpc. [145]
| Designations | PN G171.3-25.8: Ba 1, PK 171-25.1, ARO 87, VV 14, VV' 20 |
| Right Ascension (J2000.0) | 03h 53m 30s |
| Declination (J2000.0) | +19° 27' 51" |
| Dimensions | 38." (optical) |
| Radial Velocity | -19.9 ± 8.6 km/s |
| Expansion Velocity | 35.5 (O-III) km/s |
| C-Star Designations | AG82 24 |
| C-Star Magnitude | B: 18.7 |
| Discoverer | BAADE 1935 |
Finder Chart
The planetary nebula Baade 1 is located in the constellation Taurus. The best observation time is September to February.
