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417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433,
434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449
Page last updated May 4, 2011
WORKING: Add positions/physical data (per Steinicke)
IC 400
Discovered (Jan 21, 1889) by Ormond Stone (209)
IC 401
Discovered (Feb 9, 1893) by Stephane Javelle (605)
IC 402
Discovered (Dec 12, 1887) by Frank Muller (212)
IC 403
Discovered (Feb 7, 1891) by Rudolf Spitaler (6)
IC 404
Discovered (Mar 9, 1893) by Stephane Javelle (606)
IC 405 = Flaming Star Nebula
Discovered (Mar 21, 1892) by John Schaeberle
IC 406
Discovered (Feb 9, 1891) by Rudolf Spitaler (7)
IC 407
Discovered (Dec 7, 1891) by Stephane Javelle (134)
IC 408 (= IC 2121)
Discovered (February, 1889) by Lewis Swift (and later listed as IC 408)
Discovered (Dec 26, 1897) by Lewis Swift (XI-75) (and later listed as IC 2121)
IC 409
Discovered (Jan 12, 1894) by Stephane Javelle (607)
IC 410
Discovered (Sep 25, 1892) by Max Wolf
IC 411
Discovered (February 1889) by Lewis Swift (VIII-39)
IC 412 (= IC 2123)
Discovered (1888) by Edward Barnard (and later listed as IC 412)
Discovered (late 1890's?) by Edward Barnard (and later listed as IC 2123)
IC 413 (= IC 2124)
Discovered (1888) by Edward Barnard (and later listed as IC 413)
Discovered (late 1890's?) by Edward Barnard (and later listed as IC 2124)
IC 414
Discovered (Nov 8, 1891) by Sherburne Burnham
IC 415
Discovered (Dec 7, 1891) by Stephane Javelle (135)
IC 416
Discovered (Feb 18, 1893) by Stephane Javelle (610)
IC 417
Discovered (Sep 25, 1892) by Max Wolf
IC 418 -- The Spirograph Nebula
Discovered (Mar 26, 1891) by Williamina Fleming (69)
A planetary nebula in Lepus (RA 05 27 28, Dec -12 41 50)
(Image credit: NASA and The Hubble Heritage Team (STScI/AURA)
Acknowledgment: Dr. Raghvendra Sahai (JPL) and Dr. Arsen R. Hajian (USNO), Hubblesite)
Above, a HST closeup of IC 418 (credits shown above)
Below, a 12 arcmin wide region centered on the planetary nebula
The 10th-magnitude star at the center is an overexposed image of the nebula and its central star
IC 419
Discovered (Sep 25, 1892) by Max Wolf
IC 420
Discovered (Jun 27, 1888) by Williamina Fleming (63)
IC 421
Discovered (Jun 27, 1888) by Williamina Fleming (66)
IC 422 (= IC 2131)
Discovered (Feb 19, 1893) by Stephane Javelle (611) (and later listed as IC 422)
Discovered (Oct 16, 1896) by Lewis Swift (and later listed as IC 2131)
IC 423
Discovered (Jun 27, 1888) by Williamina Fleming (58)
IC 424
Discovered (Jun 27, 1888) by Williamina Fleming (56)
IC 425
Discovered (Sep 25, 1892) by Max Wolf
IC 426
Discovered (Jun 27, 1888) by Williamina Fleming (57)
IC 427
Discovered (Jun 27, 1888) by Williamina Fleming (67)
IC 428
Discovered (Jun 27, 1888) by Williamina Fleming (64)
IC 429
Discovered (Feb 6, 1893) by Stephane Javelle (612)
IC 430
Discovered (Jun 27, 1888) by Williamina Fleming (65)
IC 431
Discovered (Jun 27, 1888) by Williamina Fleming (61)
IC 432
Discovered (Jun 27, 1888) by Williamina Fleming (60)
IC 433
Discovered (Feb 18, 1893) by Stephane Javelle (613)
IC 434 = Horsehead Nebula
Discovered (Feb 1, 1786) by William Herschel
A bright nebula in Orion, near the Flame (NGC 2024) and Horsehead Nebulae
IC 434 is the ionized hydrogen region which lies behind and highlights the Horsehead, as shown below.
Above, a closeup of IC 434 (Tracey and Russ Birch/Flynn Haase/AURA/NSF/NOAO)
Below, an approximately one-degree wide region centered on the nebula
The wide-field image also shows NGC 2023 and IC 435
IC 435
Discovered (Jun 27, 1888) by Williamina Fleming (59)
IC 436
Discovered (Mar 6, 1891) by Rudolf Spitaler (8)
IC 437
Discovered (Feb 11, 1893) by Stephane Javelle (614)
IC 438
Discovered (Jan 7, 1891) by Lewis Swift (X-15)
IC 439
Discovered (Sep 25, 1892) by Max Wolf
IC 440
Discovered (Nov 16, 1890) by William Denning (4)
IC 441
Discovered (Feb 11, 1893) by Stephane Javelle (615)
IC 442
Discovered (Nov 9, 1890) by William Denning (5)
IC 443
Discovered (Sep 25, 1892) by Max Wolf
IC 444
Discovered (Sep 25, 1892) by Max Wolf
IC 445
Discovered (Sep 6, 1888) by Lewis Swift (VIII-42)
IC 446 (= IC 2167)
Discovered (Jan 24, 1894) by Edward Barnard (and later listed as IC 446)
Discovered (late 1890's?) by Edward Barnard (and later listed as IC 2167)
IC 447 (= IC 2169)
Discovered (Jan 24, 1894) by Edward Barnard (and later listed as IC 447)
Discovered (late 1890's?) by Edward Barnard (and later listed as IC 2169)
IC 448
Discovered (Jan 29, 1891) by Max Wolf
IC 449
Discovered (Sep 6, 1888) by Lewis Swift (VIII-43)
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