# Q80420229

> spectroscopic binary in the constellation Cancer

**Wikidata**: [Q80420229](https://www.wikidata.org/wiki/Q80420229)  
**Source**: https://4ort.xyz/entity/q80420229


## References

1. SIMBAD
2. Gravitational redshifts in main-sequence and giant stars
3. The PM2000 Bordeaux proper motion catalogue (+11° ≤ δ ≤ +18°)
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. CCD photometry of old open cluster M 67
6. Gaia Data Release 2
7. Stellar radial velocities in the old open cluster M67 (NGC 2682). I. Memberships, binaries, and kinematics