(543061) Ruthsager Outer Main-belt Asteroid
Discovered on 5 September 2007 by CSS at Catalina.
American geneticist Ruth Sager (1918–1997) made important contributions to plant biology and cancer research. Her work on tumor suppressor genes revolutionized the understanding of cancer formation. An advocate for gender equality, she challenged “the influence of fashions in scientific thought,” opening doors for future scientists.Naming citation (WGSBN Bull. 5, #28, 16), IAU / Minor Planet Center, via NASA/JPL
Where Ruthsager is today
Seen from above the solar system on 2026-10-14: Ruthsager is 3.61 au from the Sun and 3.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 543061 |
| Provisional designation | 2013 RS97 |
| Orbit class | Outer Main-belt Asteroid |
| Absolute magnitude (H) | 16.29 |
| Orbital period | 5.74 years |
| Semi-major axis | 3.21 au |
| Perihelion – aphelion | 2.47 – 3.94 au |
| Eccentricity | 0.230 |
| Inclination | 15.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.50 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ruth
All asteroids named after someone called Ruth