(19121) Rathnasree Main-belt Asteroid
Discovered on 12 February 1985 by H. Debehogne at La Silla.
Rathnasree Nandivada (1963–2021) was an Indian astronomer who began her career in pulsar astronomy. She was a preeminent science educator and communicator, an active science historian, and an expert on archaeoastronomical instruments. As the director of the Nehru Planetarium in New Delhi, she initiated and led several outreach and education programs.Naming citation (WGSBN Bull. 5, #1, 17), IAU / Minor Planet Center, via NASA/JPL
Where Rathnasree is today
Seen from above the solar system on 2026-10-14: Rathnasree is 3.93 au from the Sun and 3.78 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19121 |
| Provisional designation | 1985 CY1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.76 km (#6,821 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.107 |
| Absolute magnitude (H) | 13.93 |
| Orbital period | 5.66 years |
| Semi-major axis | 3.17 au |
| Perihelion – aphelion | 2.36 – 3.99 au |
| Eccentricity | 0.257 |
| Inclination | 12.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.37 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 12 February 1985
- (3985) Raybatson
- (4031) Mueller
- (4083) Jody
- (4202) Minitti
- (6084) Bascom
- (6117) Brevardastro
- (22280) Mandragora