# Q87248823

> planetary nebula

**Wikidata**: [Q87248823](https://www.wikidata.org/wiki/Q87248823)  
**Source**: https://4ort.xyz/entity/q87248823


## References

1. SIMBAD
2. Towards an improvement in the spectral description of central stars of planetary nebulae
3. Catalog of Galactic OB Stars
4. Fourth USNO CCD Astrograph Catalog
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Data Release 2
7. Hot star extension to the Hubble Space Telescope stellar spectral library