Details on Acronym: YM | |
| YM | (Yerkes McDonald obs.) |
| Write: | <<PN YM NN>> |
| N: | 47 |
| Object: | PN (SIMBAD class: PlanetaryNeb = Planetary Nebula) |
| Note: | See also [J55] and [J56] |
| Ref: | =1955ApJ...121..604J |
| by | JOHNSON H.M. |
| Astrophys. J., 121, 604-610 (1955) | |
| Symmetric galactic nebulae. | |
| o | Table 1: <[J55] NNN> (Nos 1-152), among which 36 are cross-id. with <PN YM NN> (Nos 1-36) |
| Ref: | =1956ApJ...124...90J |
| by | JOHNSON H.M. |
| Astrophys. J., 124, 90-92 (1956) | |
| Symmetric galactic nebulae. II. | |
| o | Table 1: <[J56] NN> (Nos 1-32), among which 11 are cross-id. with <PN YM NN> (Nos 37-47) |
| Origin | of the Acronym: A = Assigned by the author(s) |