Date and Time of the Query: 2019-04-21 T01:22:51 PDT
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Notes for object MESSIER 057

1 note(s) found in NED.

1. 1918PLicO..13....9C
Re:NGC 6720
Vol. VIII, Plate 59. M.57; the well-known Ring Nebula in Lyra. Planetary.
See the sketch included in the paper on Planetary Nebulae. 5 s.n.

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