Planetary Nebula IC 1747

Object Description

IC 1747
IC 1747: Planetary nebula in Cassiopeia; 500 mm Cassegrain 3625 mm f/7.2; SBIG STL11K; 11+3*5 min LRGB; Bernese Highlands; © 2011 Radek Chromik

The small planetary nebula IC 1747 was discovered in 1905 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]

IC 1747 belongs to the astrophysically rare but important group of planetary nebulae which have OVI, OVII and OVIII emission lines. Of the more than 1700 known planetary nebulae, only about 26 of the type OVI are known. [419]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
DesignationsPN G130.2+01.3: IC 1747, PK 130+01.1, ARO 91, VV 7, VV' 10
Right Ascension (J2000.0)01h 57m 36s
Declination (J2000.0)+63° 19' 19"
Dimensions 13." (optical)
Distance 2.5 kpc
Radial Velocity-66.5 km/s ± 3.3 km/s
Expansion Velocity 27.5 km/s (O-III)
C-Star DesignationsAG82 12, CSI +63-01538 0, EM* CDS 226, EQ 0154 +630, HD 11758
C-Star Magnitude15.8 mag (B filter), 15.4 mag (V filter)
C-Star Spectral TypeO VI, WC 4
DiscovererFLEMING 1905

Finder Chart

The planetary nebula IC 1747 is located in the constellation Cassiopeia, only about half a degree southeast of the star Segin (ε Cassiopeia). The PN is circumpolar with a declination of about 63 ° in Central Europe, but the best observation time is July to January, when it is highest at night.

Chart Planetary Nebula IC 1747
Planetary Nebula IC 1747 in constellation Cassiopeia. Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

More Objects Nearby (±15°)

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)
149SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
160The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
196Celestial Atlas by Curtney Seligman; cseligman.com/text/atlas.htm (2020-12-28)
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)
419«The IUE Spectra of Three Optically Narrow-Line O VI Planetary Nebulae: NGC 1501, IC 1747, and IC 1297» Walter A. Feibelman; The Astrophysical Journal Supplement Series, Volume 119, Number 2, 1998; DOI:10.1086/313160