Type | Asterism |
---|---|
Magnitude | Right Ascension | 18h 38' 35.3" (2000) |
Declination | 24° 5' 48" S |
Constellation | Sagittarius |
Andrew Cooper
Aug 6, 2021 Waikoloa, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 233x
Seeing: 5 Transparency: 6 Moon: 0%
A clump of half a dozen 12-13th magnitude stars in a rough line running north to south, appears nebulous at lower power, resolved neatly at 233x
Harold Corwin
As with IC 1203 and IC 1207 (which see), this is an asterism of 6 to 8 faint stars near Thome's position. Herbert Howe was the first to observe this after Thome and he said only, "This is simply a cluster of half a dozen small stars from mag. 12 down." The asterism, probably not a cluster, is a north-south line of stars about 2 arcmin long. I've adopted the mean of the 2MASS PSC positions for the six brightest stars in the line. The position that I originally adopted (from my own estimate and from ESO) is too far east by about 6 seconds of time.― IC Notes by Harold Corwin
24 Sagittarii | 25 Sagittarii | 26 Sagittarii |
28 Sagittarii | Barnard 98 | HD 171961 |
HD 172178 | HD 172193 | HD 173117 |
IC 4732 | Messier 22 | NGC 6638 |
NGC 6642 | NGC 6644 | PK10-6.2 |
PK11-9.1 | PK8-7.1 | PK9-9.1 |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
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