1981 Midas

1981 Midas

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name = 1981 Midas
discoverer=Charles T. Kowal
discovered=March 6, 1973
alt_names=1973 EA
mp_category=Apollo
Venus crosser
Mars crosser
epoch = December 1, 2005 (JD 2453705.5)
semimajor = 1.776 AU
perihelion = 0.621 AU
aphelion = 2.931 AU
eccentricity = 0.650
period = 864.541 d
inclination = 39.838°
asc_node = 357.037°
arg_peri = 267.739°
mean_anomaly = 267.903°
avg_speed =19.757 km/s
dimensions = 3.4 km
mass =
density =
surface_grav =
escape_velocity =
rotation =5.22 h
spectral_type =
magnitude = 11.8 (brightest)
abs_magnitude =15.5
albedo =
single_temperature =
The asteroid 1981 Midas was discovered on March 6, 1973 by Charles T. Kowal at Palomar Observatory. It is named after Midas, the king of Phrygia in Greek mythology who turned objects to gold when he touched them. Midas is an Apollo asteroid, a Venus and Mars-crosser asteroid with an orbital period of 2 years, 134 days.

Its last close approach to Earth was in March 1992, passing at 19.9 Gm. The next close approach will be in March of 2018 coming within a distance of 13.4 Gm and shining at an apparent magnitude of +12.3.

References

* [http://cfa-www.harvard.edu/iauc/02800/02816.html#Item2 IAUCs 2816] , [http://cfa-www.harvard.edu/iauc/02800/02890.html#Item3 2890] , [http://cfa-www.harvard.edu/iauc/02900/02979.html#Item2 2979] , [http://cfa-www.harvard.edu/iauc/02900/02991.html#Item4 2991]
* [http://unicorn.eis.uva.es/cgi-bin/neodys/neoibo?objects:Midas;main NeoDys] includes Close Approaches (from 1950 to 2100)
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1981;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=1981 Ephemeris]


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  • (1981) Midas — Nombre del asteroide 1973 EA, número 1981 de la serie, descubierto en 1973 por C. T. Kowal. Midas está incluido en la lista de asteroides potencialmente peligrosos, dado que su órbita se halla relativamente cerca a la de la Tierra. Perihelio:… …   Wikipedia Español

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