# IC 4997

> star

**Wikidata**: [Q1639920](https://www.wikidata.org/wiki/Q1639920)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/IC_4997)  
**Source**: https://4ort.xyz/entity/ic-4997


## References

1. SIMBAD
2. VizieR
3. Weak emission line [WELS] central stars of planetary nebulae are [WC]-PG 1159 stars
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue