(21523) GONG Main-belt Asteroid
Discovered on 26 June 1998 by R. A. Tucker at Goodricke-Pigott.
The Global Oscillation Network Group operates solar telescopes in California, Hawaii, Australia, India, the Canary Islands and Chile that provide doppler, magnetic and intensity images every minute. Helioseismic data acquired at the GONG stations have provided much information about the interior structure of the sun.Naming citation (20011230/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where GONG is today
Seen from above the solar system on 2026-10-14: GONG is 3.70 au from the Sun and 3.84 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21523 |
| Provisional designation | 1998 MW15 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.4 km (#4,899 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0340 |
| Absolute magnitude (H) | 13.94 |
| Orbital period | 5.23 years |
| Semi-major axis | 3.01 au |
| Perihelion – aphelion | 2.23 – 3.80 au |
| Eccentricity | 0.260 |
| Inclination | 26.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.22 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 26 June 1998
- (13244) Dannymeyer
- (13700) Connors
- (21529) Johnjames
- (21530) Despiau
- (23774) Herbelliott
- (46824) Tambora
- (48909) Laurake
- (69754) Mosesmendel
- (100936) Mekong