# 3C 273

> quasar

**Wikidata**: [Q229318](https://www.wikidata.org/wiki/Q229318)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/3C_273)  
**Source**: https://4ort.xyz/entity/3c-273


## References

1. SIMBAD
2. The WISE Blazar-like Radio-loud Sources: An All-sky Catalog of Candidate γ-ray Blazars
3. The INTEGRAL/IBIS AGN catalogue - I. X-ray absorption properties versus optical classification
4. VizieR
5. [SIMBAD](http://simbad.u-strasbg.fr/simbad/sim-id?Ident=3C%20273)
6. Freebase Data Dumps. 2013
7. A redshift survey of IRAS galaxies. VII - The infrared and redshift data for the 1.936 Jansky sample
8. A catalogue of quasars and active nuclei: 13th edition
9. The Tycho-2 catalogue of the 2.5 million brightest stars
10. CGRaBS: An All‐Sky Survey of Gamma‐Ray Blazar Candidates
11. Gaia Early Data Release 3
12. The Two Micron All Sky Survey (2MASS)
13. The SDSS Photometric Catalog, Release 7
14. Gaia Data Release 2
15. [Source](http://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=62790&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1)
16. The Star Formation Reference Survey. I. Survey description and basic data
17. The GB6 catalog of radio sources
18. The HIPPARCOS Catalogue