# Jonckheere 900

> planetary nebula

**Wikidata**: [Q15821645](https://www.wikidata.org/wiki/Q15821645)  
**Source**: https://4ort.xyz/entity/q15821645


## References

1. SIMBAD
2. Weak emission line [WELS] central stars of planetary nebulae are [WC]-PG 1159 stars
3. Gaia Data Release 2
4. The Two Micron All Sky Survey (2MASS)
5. Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue
6. The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale