# Q74705304

> astrophysical X-ray source in the constellation Ophiuchus

**Wikidata**: [Q74705304](https://www.wikidata.org/wiki/Q74705304)  
**Source**: https://4ort.xyz/entity/q74705304


## References

1. SIMBAD
2. Extrasolar Planets Encyclopaedia
3. The USNO-B Catalog
4. Gaia Early Data Release 3
5. An Optical Study of the Black Widow Population
6. Fermi Large Area Telescope First Source Catalog
7. A multiwavelength investigation of candidate millisecond pulsars in unassociated γ-ray sources
8. Searches for millisecond pulsar candidates among the unidentified Fermi objects
9. Gaia Data Release 2