NGC 6644 (other designations - PK 8-7.2 , ESO 522-PN33 ) is a planetary nebula in the constellation Sagittarius .
| NGC 6644 | |
|---|---|
| planetary nebula | |
 | |
| Research history | |
| Discoverer | Edward Charles Pickering |
| opening date | July 13, 1880 |
| Designations | NGC 6644 , PK 8-7.2 , ESO 522-PN33 |
| Observational data ( Age J2000.0 ) | |
| Right ascension | |
| Declination | |
| Visible magnitude (V) | 10.7 |
| Photographic magnitude (V) | 12,2 |
| Visible Dimensions (V) | 0.2 ' |
| Constellation | Sagittarius |
This object is one of those listed in the original edition of the New General Catalog .
See also
- List of Messier objects
- New shared directory
Links
- Information in English and French from the original “ New General Catalog ”
- Information (Eng.) From the Revised New General Catalog
- SIMBAD
- VizieR (English)
- NASA / IPAC Extragalactic Database
- NGC 6644 Publication List