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6450, 6451, 6452, 6453, 6454, 6455, 6456, 6457, 6458, 6459, 6460, 6461, 6462, 6463, 6464, 6465, 6466,
6467, 6468, 6469, 6470, 6471, 6472, 6473, 6474, 6475, 6476, 6477, 6478, 6479, 6480, 6481, 6482, 6483,
6484, 6485, 6486, 6487, 6488, 6489, 6490, 6491, 6492, 6493, 6494, 6495, 6496, 6497, 6498, 6499
Page last updated Jul 27, 2011
WORKING: Add positions/physical data (per Steinicke)
NGC 6450
Recorded (Jul 1, 1884) by Lewis Swift (2-61)
A lost or nonexistent object in Hercules (RA 17 47 32.3, Dec +18 34 31)
The second IC notes "Not found by Howe (2 nights)".
NGC 6451
Discovered (Jun 24, 1784) by William Herschel
NGC 6452
Discovered (Jul 2, 1864) by Albert Marth (349)
NGC 6453
Discovered (Jun 8, 1837) by John Herschel
NGC 6454
Discovered (Apr 19, 1885) by Lewis Swift (1-70)
The second IC lists a corrected RA (per Bigourdan) of 17 42 20.
NGC 6455
Discovered (Jun 7, 1837) by John Herschel
NGC 6456
Discovered (Sep 25, 1886) by Lewis Swift (5-76)
NGC 6457
Discovered (Jun 8, 1885) by Edward Swift (1-71)
NGC 6458
Discovered (Jul 2, 1864) by Albert Marth (350)
NGC 6459
Discovered (Apr 19, 1885) by Lewis Swift (1-72)
NGC 6460
Discovered (Jun 2, 1864) by Albert Marth (351)
NGC 6461
Discovered (Sep 18, 1884) by Lewis Swift (5-77)
NGC 6462
Discovered (Jun 5, 1885) by Lewis Swift (1-73)
NGC 6463
Discovered (1886) by Lewis Swift (4-55)
NGC 6464
Discovered (Sep 18, 1884) by Lewis Swift (1-74)
NGC 6465
Discovered (Jul 1, 1826) by John Herschel
The second IC notes (per Howe) "Only 2 faint double stars".
NGC 6466
Discovered (Sep 18, 1884) by Lewis Swift (1-75)
NGC 6467
Discovered (Jun 2, 1864) by Albert Marth (352)
NGC 6468 (= IC 1268)
Discovered (Jun 2, 1864) by Albert Marth (353) (and later listed as NGC 6468)
Discovered (May 16, 1888) by Lewis Swift (and later listed IC 1268)
A 14th-magnitude spiral galaxy (type Sc) in Hercules (RA 17 50 39.2, Dec +17 12 36)
NGC 6469
Discovered (Jun 27, 1837) by John Herschel
NGC 6470
Discovered (1886) by Lewis Swift (4-56)
NGC 6471
Discovered (Sep 25, 1886) by Lewis Swift (5-78)
NGC 6472
Discovered (Sep 25, 1886) by Lewis Swift (5-79)
NGC 6473
Recorded (Jul 22, 1886) by Lewis Swift (4-58)
A star in Draco (RA 17 46 54.0, Dec +57 18 30)
NGC 6474
Discovered (Jul 22, 1886) by Lewis Swift (4-57)
NGC 6475 (= M7)
Recorded (about 138) by Ptolemy
Recorded (1764) by Charles Messier as M7
A 3rd-magnitude open cluster in Scorpius (RA 17 53 50.0, Dec -34 47 36)
Above, an image of M7 (Credit: N.A.Sharp, REU program/AURA/NSF/NOAO)
NGC 6476
Discovered (Jul 15, 1836) by John Herschel
NGC 6477
Discovered (Sep 25, 1886) by Lewis Swift (5-80)
NGC 6478
Discovered (May 30, 1886) by Lewis Swift (3-95)
NGC 6479
Discovered (Apr 20, 1885) by Lewis Swift (1-76)
NGC 6480
Discovered (Jun 27, 1837) by John Herschel
NGC 6481
Discovered (Aug 21, 1859) by Christian Peters
NGC 6482
Discovered (Jul 12, 1830) by John Herschel
NGC 6483
Discovered (Jun 8, 1836) by John Herschel
NGC 6484
Discovered (Jul 11, 1866) by Truman Safford (41)
NGC 6485
Discovered (Jul 27, 1864) by Albert Marth (354)
NGC 6486
Discovered (Jul 28, 1880) by Édouard Stephan (11c-19)
NGC 6487
Discovered (Jul 28, 1880) by Édouard Stephan (11c-20)
NGC 6488
Discovered (Sep 1, 1886) by Lewis Swift (4-59)
NGC 6489
Discovered (Jun 5, 1885) by Lewis Swift (1-77)
NGC 6490
Discovered (May 11, 1864) by Albert Marth (355)
NGC 6491
Discovered (Jun 13, 1885) by Lewis Swift (1-78)
NGC 6492
Discovered (Jul 22, 1835) by John Herschel
NGC 6493
Discovered (Jun 5, 1885) by Lewis Swift (1-79)
NGC 6494 (= M23)
Discovered (Jun 20, 1764) by Charles Messier
A 6th-magnitude open cluster in Sagittarius (RA 17 56 56.0, Dec -19 00 42)
M23 is an irregular cluster of stars 15 to 20 light-years in diameter, about 2200 light-years from the Sun. The brightest of its approximately 150 stars are almost 9th magnitude, or -- taking the distance of the cluster into account -- about 60 times brighter than the Sun. This implies an age for the cluster of about two to three hundred million years.
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Above, an image of M23 (Image Credit: N. A. Sharp, REU Program, AURA, NSF, NOAO)
NGC 6495
Discovered (May 11, 1864) by Albert Marth (356)
NGC 6496
Discovered (Jun 28, 1826) by James Dunlop (461)
NGC 6497 (= NGC 6498)
Discovered (Sep 16, 1884) by Lewis Swift (1-80) (and later listed as NGC 6497)
Discovered (Sep 26, 1884) by Lewis Swift (and later listed as NGC 6498)
A 14th-magnitude barred spiral galaxy (type SBb) in Draco (RA 17 51 17.8, Dec +59 28 16)
Above, a 2.4 arcmin wide closeup of NGC 6497
Below, a 12 arcmin wide region centered on NGC 6497
NGC 6498 (= NGC 6497)
Discovered (Sep 16, 1884) by Lewis Swift (and later listed as NGC 6497)
Discovered (Sep 26, 1884) by Lewis Swift (1-81) (and later listed as NGC 6498)
A 14th-magnitude barred spiral galaxy (type SBb) in Draco (RA 17 51 17.8, Dec +59 28 16)
NGC 6499
Recorded (May 11, 1864) by Albert Marth (357)
A pair of stars in Hercules (RA 17 55 20.0, Dec +18 21 34)
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