Asteroid 3421 (1975 WK1) (Yang Zhenning) is a primary astronomical as found by China Zikinshan Observatory on November 26, 1975 in Nanjing.
Zikinshanin observatorio nimesi 25. toukokuuta 1997 Yang Zhenning Star -nimisen kansainvälisen numeron 3421 kansainvälisen numeron ylistääkseen fyysikko Yang Zhenningin tieteellistä panosta.
| Discover | ||||
|---|---|---|---|---|
| Find Articles | Zikinshan Observatory | |||
| Discovery | Nanjing | |||
| Discovery Date | November 26, 1975 | |||
| No. | MPC Number | 3421 | ||
| Other Name | 1975 WK1 | |||
| Track Parameter | ||||
| Class 2008 May 14, 2008 | ||||
| Outstanding Day | 2.4398937 | Recent point | 2.0271381 | Centrifugal rate | 0.0924004 |
| 1219.2197806 | 248.42997 | |||
| 2.46321 | ||||
| Laptos Point Caucasus | 243.76458 | |||
| 205.19998 | ||||
| absolute Star et al. (H) | 13.5 |
