# Q88553937

> planetary nebula

**Wikidata**: [Q88553937](https://www.wikidata.org/wiki/Q88553937)  
**Source**: https://4ort.xyz/entity/q88553937


## References

1. SIMBAD
2. The populations of planetary nebulae in the direction of the Galactic Bulge. Chemical abundances and Wolf-Rayet central stars
3. Wolf-Rayet nuclei of planetary nebulae. Observations and classification
4. Fourth USNO CCD Astrograph Catalog
5. The Two Micron All Sky Survey (2MASS)
6. Gaia Data Release 2
7. A Survey of Planetary Nebulae in the Southern Galactic Bulge
8. The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale