Details on Acronym: NGC 6656 | |
| NGC 6656 | |
| Write: | <<NGC 6656 NNNN # 4 digits>> |
| N: | 121+108+119+110+25 |
| Object: | *inCl |
| Rem: | Format 'NNNN' (always 4 digits), where the first digit stands for the quadrant I to V. ex.: quadrant IV, No. 110 = NGC 6656 4110, quadrant I, No. 1 = NGC 6656 1001. Quadrant V, Center, added in 1975MNRAS.171..647L, N=25. |
| Ref: | =1959AJ.....64...28A |
| by | ARP H.C. , MELBOURNE W.G. |
| Astron. J., 64, 28-32 (1959) | |
| Color-magnitude diagram for the globular cluster M 22. | |
| o | Table I: <Cl* NGC 6656 ARP a> (Nos a-h). Table II: <NGC 6656 NNNN> (always 4 digits) N=121+108+119+110. |
| Ref: | =1975MNRAS.171..647L |
| by | LLOYD EVANS T. |
| Mon. Not. R. Astron. Soc., 171, 647-657 (1975) | |
| Near-infrared photometry of globular clusters. IV. The metal poor cluster NGC 6656 (M 22). | |
| o | <NGC 6656 NNNN> continues 1959AJ.....64...28A. The format is always a 4 digits one, first digit is a roman numeral |
| =E= | Catalogue in electronic form as <J/AJ/64/28/> |
Details on Acronym: Cl* NGC 6656 AM | |
| Cl* NGC 6656 AM | (Arp+Melbourne) |
| ====> | Equivalent to: NGC 6656 |