Planetary Nebula IC 289

Object Description

IC 289
IC 289: Planetary nebula in Cassiopeia; 500 mm Cassegrain 3625 mm f/7.2; SBIG STL11K; 120+3*40 min LRGB; Bernese Highlands; © 2015 Radek Chromik

The planetary nebula IC 289 was discovered on September 2, 1888 by the American astronomer Lewis Swift with a 16 inch reflector telescope. He described it as «fairly bright, fairly large, round, between two very faint stars». [277, 314] In 1921 Edwin Hubble identified the nebula as a planetary nebula. [416]

IC 289
IC 289: Image taken by Hubble Space Telescope [418]

The visual appearance resembles a somewhat irregular ring with dimensions 38x28 arcseconds and a position angle of 142°, which is surrounded by a weaker, almost circular emission with a diameter of 42 arcseconds. The axis of the spheroid is almost perpendicular to the line of sight with an inclination of 10°. [417] The distance is about 1448 pc to 1592 pc. [145]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
DesignationsPN G138.8+02.8: IC 289, PK 138+02.1, ARO 86, Hb 1, VV 9, VV' 15
Right Ascension (J2000.0)3h 10m 20s
Declination (J2000.0)61° 19' 02"
Dimensions 35." (optical)
Distance2.8 kpc - 4.8 kpc
Radial Velocity-20.0 km/s ± 4.0 km/s
Expansion Velocity 25.5 km/s (O-III)
C-Star DesignationsAG82 19, NSV 1056
C-Star Magnitude>15.1 mag (B filter), >15.9 mag (V filter)
DiscovererHUBBLE 1921

Finder Chart

The planetary nebula IC 289 is located in the constellation Cassiopeia near the border with Camelopardalis (Giraffe). The object is circumpolar, but the best time to view it is July to January, when it is highest at night.

Chart IC 289
Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]


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); (2021-02-18)
145SIMBAD astronomical database;
149SkySafari 6 Pro, Simulation Curriculum;
160The STScI Digitized Sky Survey;
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; (2021-02-17)
314«Index Catalogue of Nebulæ found in the years 1888 to 1894, with Notes and Corrections to the New General Catalogue» Dreyer, J. L. E.; Memoirs of the Royal Astronomical Society, Vol. 51, p.185; 1895; Bibcode:1895MmRAS..51..185D
416«Twelve New Planetary Nebulae» Edwin Hubble;Publications of the Astronomical Society of the Pacific, Volume 33, Number 193, 1921; DOI:10.1086/123070
417«Internal motions in planetary nebulae : NGC 7354, I 289 and HU 1-2» Sabbadin, F.; Bianchini, A.; Hamzaoglu, E.; Astronomy and Astrophysics, Suppl. Ser., Vol. 51, p. 119-126 (1983); Bibcode:1983A&AS...51..119S
418Hubble Sees Stars That Go Out With a Whimper; (2021-08-03)