# Cloverleaf quasar

> rare example of a quadruply-lensed quasar

**Wikidata**: [Q3245196](https://www.wikidata.org/wiki/Q3245196)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cloverleaf_quasar)  
**Source**: https://4ort.xyz/entity/cloverleaf-quasar


## References

1. SIMBAD
2. VizieR
3. A spectroscopic survey of the fields of 28 strong gravitational lenses
4. A catalogue of quasars and active nuclei: 13th edition
5. Mean spectral energy distributions and bolometric corrections for luminous quasars
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)