Planetary Nebula Abell 13

Abell 13
Abell 13: Planetary nebula in Orion; 500 mm Cassegrain 3625 mm f/7.2, SBIG STL11K; 120+40+40+40 min LRGB; Bernese Highlands; © 2011 Radek Chromik

History

The planetary nebula Abell 13 (PK 204-8.1 was discovered by the American astronomer George Ogden Abell on the photo plates of the Palomar Observatory Sky Survey (POSS) in 1955. Most of the 86 PNs discovered on the POSS photo plates are large and have one low surface brightness, which suggests an advanced age of their developmental stage. [331, 332]

Physical Properties

The PN is located at a distance of about 1.2 kpc. The brightness of the nebula, which is around 2.5 arc minutes in size, is 19.87 mag in the V-band and 19.87 mag in the B-band 06/20 mag. [145]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
DesignationsPN G204.0-08.5: A 13, PK 204-08.1, A55 9, ARO 124, VV' 38, YM 28
Right Ascension (J2000.0)6h 04m 47s
Declination (J2000.0)3° 56' 27"
Dimensions 153." (optical)
Expansion Velocity 20. km/s (O-III), 22.5 km/s (N-II)
C-Star DesignationsAG82 58, CSI +03 -06022, UBV 6150
C-Star Magnitude19.06 mag (U filter), 20.06 mag (B filter), 19.87 mag (V filter)
DiscovererABELL 1955

Finder Chart

The planetary nebula Abell 13 is located in the constellation Orion, about 13 arc minutes south of the 5.6 mag bright star 66 Orionis. The best observation time is October to February.

Chart Abell 13
Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

References

141Strasbourg-ESO Catalogue of Galactic Planetary Nebulae; A. Acker, F. Ochsenbein, B. Stenholm, R. Tylenda, J. Marcout, C. Schohn; European Southern Observatory; ISBN 3-923524-41-2 (1992); cdsarc.unistra.fr/viz-bin/cat/V/84 (2021-02-18)
145SIMBAD astronomical database; simbad.u-strasbg.fr/simbad
149SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
160The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
331«Globular Clusters and Planetary Nebulae Discovered on the National Geographic Society-Palomar Observatory Sky Survey» Abell, G. O.; Publications of the Astronomical Society of the Pacific, Vol. 67, No. 397, p.258-261, August 1955; DOI:10.1086/126815; Bibcode:1955PASP...67..258A
332«Properties of Some Old Planetary Nebulae» Abell, G. O.; Astrophysical Journal, vol. 144, p.259, April 1966; DOI:10.1086/148602; Bibcode:1966ApJ...144..259A