Galaxy NGC 1365

NGC 1365
NGC 1365: Galaxy in Fornax; Newton-Astrograph 305 mm f/4.6; DeepSkyPro 2600; L 41x120s, Ha 12x300s, R 13x120s, B 12x120s; VdS Remote Observatory, Namibia; © 2023 Eduard von Bergen [29]
NGC 1365
NGC 1365: Galaxy in Fornax; Takahashi TOA 150/1100 APO refractor @ f/5.6 (TOA-645 Reducer); SBIG STL-11000M; Astro-Physics 1200GTO; 32x5 min -25 °C; Namibia, Tivoli Southern Sky Guest Farm, 1360 m ASL; © 29. 8. 2016 Manuel Jung [45]
NGC 1365
NGC 1365: Barred spiral galaxy in Fornax; 400 mm Keller Hypergraph f=3200 mm; SBIG STL-11000M/C2; L 25×10 min; R 12×5 min; G 12×5 min; B 12×5 min; -30 °C; Astrofarm Tivoli, Namibia; © 28.-29. August 2014 Hansjörg Wälchli [46]


This galaxy was discovered by Scottish astronomer James Dunlop on 2 September 1826. He used the self-built 9-inch reflector at Paramatta, New South Wales. Unfortunately he made a transcription error and hence was not credited with the discovery in the GC or NGC. [50]

John Herschel independently discovered this galaxy on 28 November 1837 while conducting his sweeps at South Africa. He cataloged it has h 2552 and noted for sweep 801: «A very remarkable nebula. A decided link between the nebula M 51 and M 27. Center very bright; somewhat extended; gradually very much brighter in the middle; a star of 13 mag near the edge of the halo involved. The area of the halo very faint; general position of the longer axis 20.8° whole breadth = 3'.» On sweep 802 he noted: «Very bright, extended, resolvable nucleus; or has 2 or 3 stars involved; the preceding arc is the brighter. I thonk the oval is in some degree filled up to the south.» [11]

Physical Properties

NGC 1365 is a barred spiral galaxy of Seyfert 1 type with an active nucleus and ongoing star formation. It belongs to the Fornax cluster of galaxies.

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke [277]
Designation NGC 1365
Type Gx (SBb)
Right Ascension (J2000.0) 03h 33m 36.7s
Declination (J2000.0) -36° 08' 27"
Diameter 11 × 6.2 arcmin
Photographic (blue) magnitude 10.3 mag
Visual magnitude 9.6 mag
Surface brightness 14.1 mag·arcmin-2
Position Angle 32°
Redshift (z) 0.005457
Distance derived from z 23.05 Mpc
Metric Distance 17.930 Mpc
Dreyer Description !! vB, vL, mE, rN
Identification, Remarks h 2552; GC 731; ESO 358-17; MCG -6-8-26; VV 825; FCC 121; IRAS 03317-3618

Finder Chart

The galaxy NGC 1365 is located in constellation Fornax at a declination of -36°. In Switzerland it reaches only circa 6° above the horizon around November. Maybe on top of a mountain when Italy has no power for light pollution you could catch a glimpse. Better travel more south.

Finder Chart Galaxy NGC 1365
Galaxy NGC 1365 in constellation Fornax. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Objects Within a Radius of 25°


  • [11] «Results of astronomical observations made during the years 1834, 5, 6, 7, 8, at the Cape of Good Hope ... : being the completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825» Herschel, John F. W.; London : published by Smith, Elder and Co., 1847; DOI:10.3931/e-rara-22242
  • [29] Astrobin: AstroEdy's Gallery;
  • [45] Astro-, Landschafts- und Reisefotografie sowie Teleskopbau, Manuel Jung;
  • [46] Astrofotografie mit Hansjörg Wälchli;
  • [50] «VIII. A catalogue of nebulæ and clusters of stars in the southern hemisphere, observed at Paramatta in New South Wales, by James Dunlop, Esq. In a letter addressed to Sir Thomas Makdougall Brisbane, Bart. K. C. B. late Governor of New South Wales. Presented to the Royal Society by John Frederick William Herschel, Esq. Vice President» James Dunlop;Philosophical Transactions of the Royal Society of London, Volume 118, pages 113-151, published 1 January 1828; DOI:10.1098/rstl.1828.0010
  • [149] SkySafari 6 Pro, Simulation Curriculum;
  • [160] The STScI Digitized Sky Survey;
  • [277] «Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; (2021-02-17)