# Q89638173

> Seyfert 1 galaxy in the constellation Andromeda

**Wikidata**: [Q89638173](https://www.wikidata.org/wiki/Q89638173)  
**Source**: https://4ort.xyz/entity/q89638173


## References

1. SIMBAD
2. Survey of instantaneous 1-22 GHz spectra of 550 compact extragalactic objects with declinations from $-30^\circ$ to $+43^\circ$
3. Quasars in the 2MASS Second Incremental Data Release
4. Gaia Data Release 2
5. Gaia Data Release 2. Summary of the contents and survey properties
6. Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003
7. The second realization of the international celestial reference frame by very long baseline interferometry