(21943) Diannacowern Main-belt Asteroid
Discovered on 9 November 1999 by CSS at Catalina.
Dianna Leilani Cowern (b. 1989) is an American science communicator. On her YouTube channel Physics Girl, she often collaborates with other educational YouTubers. The channel has over 400 million views and more than 3 million subscribers.Naming citation (WGSBN Bull. 5, #4, 25), IAU / Minor Planet Center, via NASA/JPL
Where Diannacowern is today
Seen from above the solar system on 2026-10-14: Diannacowern is 2.88 au from the Sun and 2.84 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21943 |
| Provisional designation | 1999 VG114 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.89 km (#5,837 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0590 |
| Absolute magnitude (H) | 14.28 |
| Orbital period | 3.72 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 1.92 – 2.89 au |
| Eccentricity | 0.202 |
| Inclination | 8.52° |
| Closest distance between its orbit and Earth's (MOID) | 0.900 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Dianna
All asteroids named after someone called Dianna
Also discovered on 9 November 1999
- (14220) Alexgibbs
- (19719) Glasser
- (20695) Santiagoiglesias
- (20696) Torresduarte
- (21900) Orus
- (21942) Subramanian
- (21962) Scottsandford
- (23002) Jillhirsch
- (23003) Ziminski
- (23004) Triciatalbert
- (24101) Cassini
- (24102) Jacquescassini