Back (4953) 1990 MU Arabic (4953) 1990 MU (كويكب) ARZ (4953) 1990 MU CE (4953) 1990 MU Esperanto (4953) 1990 MU Spanish (4953) 1990 MU Finnish (4953) 1990 MU French (4953) 1990 MU Hungarian (4953) 1990 MU Armenian (4953) 1990 MU ID
 1990 MU&sq=Facebook&lang=en&file=File:(4953)_1990_MU.svg) Orbit of asteroid (4953) 1990 MU viewed from the north ecliptic pole at the epoch of 1 January 2010 | |
| Discovery[1] | |
|---|---|
| Discovered by | Robert H. McNaught |
| Discovery site | Siding Spring Obs |
| Discovery date | 23 June 1990 |
| Designations | |
| (4953) 1990 MU | |
| NEO · Apollo · PHA[1] | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 41.16 yr (15032 days) |
| Earliest precovery date | 21 July 1974 (Siding Spring Observatory) |
| Aphelion | 2.6874 AU (402.03 Gm) |
| Perihelion | 0.55508 AU (83.039 Gm) |
| 1.6212 AU (242.53 Gm) | |
| Eccentricity | 0.65762 |
| 2.06 yr (754.00 d) | |
Average orbital speed | .4774 deg/day |
| 197.22° | |
| 0.47746°/day | |
| Inclination | 24.388° |
| 77.737° | |
| 77.748° | |
| Earth MOID | 0.0256049 AU (3,830,440 km)[1] |
| Physical characteristics | |
| 2.8 km[2] | |
| 14.218 h | |
| 14.1[1] | |
(4953) 1990 MU (prov. designation: 1990 MU) is a large Earth-crossing asteroid (ECA) belonging to the Apollo group of near-Earth objects which also cross the orbits of Mars and Venus. At approximately 3 km in diameter,[3] it is one of the largest known ECAs.[4] It has been assigned a permanent number from the Minor Planet Center (4953) indicating that its orbit has been very well determined. With an observation arc of 45 years, the asteroid's trajectory and uncertainty regions are well known through to the year 2186.[1]
- ^ a b c d e f Cite error: The named reference
JPLwas invoked but never defined (see the help page). - ^ Cite error: The named reference
EARNwas invoked but never defined (see the help page). - ^ B. G. Marsden, G. V. Williams, "Earth-crossing asteroids", Hazards due to Comets and Asteroids, pages 1233–1238, University of Arizona Press, 1994 ISBN 0816515050.
- ^ D. I. Steel, R. H. McNaught, K.S. Russell, "The Anglo-Australian Near-Earth Asteroid Survey", Proceedings of the Liege International Colloquium 30, pages 219–221, 24–25 June 1992 Bibcode:1992LIACo..30..219S.