(4831) Baldwin Main-belt Asteroid
Discovered on 14 September 1988 by S. J. Bus at Cerro Tololo.
Through his pioneering work on the impact origins of lunar craters, Ralph Baldwin (b. 1912) recognized the importance of impacts in the moon's geologic history. Baldwin's contributions to lunar science were published in his books The Face of the Moon (1949) and The Measure of the Moon (1963).Naming citation (20001013/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Baldwin as a baby name🐶 Baldwin as a dog name
Where Baldwin is today
Seen from above the solar system on 2026-10-14: Baldwin is 3.33 au from the Sun and 2.56 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4831 |
| Provisional designation | 1988 RX11 |
| Orbit class | Main-belt Asteroid |
| Diameter | 18.4 km (#2,435 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0570 |
| Rotation period | 5.00 hours |
| Absolute magnitude (H) | 12.63 |
| Orbital period | 5.43 years |
| Semi-major axis | 3.09 au |
| Perihelion – aphelion | 2.71 – 3.46 au |
| Eccentricity | 0.121 |
| Inclination | 0.263° |
| Closest distance between its orbit and Earth's (MOID) | 1.71 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 14 September 1988
- (5233) Nastes
- (5257) Laogonus
- (5395) Shosasaki
- (6443) Harpalion
- (6899) Nancychabot
- (7565) Zipfel
- (7817) Zibiturtle
- (8482) Wayneolm
- (8642) Shawnkerry
- (8829) Buczkowski
- (9319) Hartzell
- (10296) Rominadisisto