3581 Alvarez

Alvarez
Discovery
Discovered by Shoemaker, C. and Shoemaker, E.
Discovery site Palomar
Discovery date 23 April 1985
Designations
MPC designation 3581
1985 HC
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 19674 days (53.86 yr)
Aphelion 3.9051003 AU (584.19469 Gm)
Perihelion 1.6456876 AU (246.19136 Gm)
2.775394 AU (415.1930 Gm)
Eccentricity 0.4070436
4.62 yr (1688.8 d)
183.71561°
 12m 47.396s / day
Inclination 28.79773°
217.59491°
107.42112°
Earth MOID 0.829262 AU (124.0558 Gm)
Jupiter MOID 2.41618 AU (361.455 Gm)
Jupiter Tisserand parameter 3.044
Physical characteristics
Dimensions ~14km
33.42 h (1.393 d)[2]
33.42 h[1]
B[1]
12.2[1]

    3581 Alvarez (1985 HC) is a Mars-crossing asteroid discovered on April 23, 1985 by Shoemaker, C. and Shoemaker, E. at Palomar.[1] Based upon lightcurve data, it has a synodic rotation period of 33.42±0.02 hours with an amplitude variation of 0.06±0.02 in magnitude.[2] With a diameter of ~14 km, it is one of the largest Mars-crossing asteroids. However, due to the high inclination of its orbit, it never actually passes through the orbit of Mars since at perihelion it is well away from the plane of Mars' orbit.[3] The asteroid is named after planetary scientist Walter Alvarez and his Nobel-prize winning father, physicist Luis Alvarez.[4]

    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 3581 Alvarez". Jet Propulsion Laboratory. Retrieved 14 April 2016.
    2. 1 2 Koff, Robert A. (June 2005), "Lightcurve photometry of asteroids 212 Medea, 517 Edith, 3581 Alvarez 5682 Beresford, and 5817 Robertfrazer", The Minor Planet Bulletin, 32 (2): 32−34, Bibcode:2005MPBu...32...32K.
    3. de Leon, Julia; et al. (October 2010), "Origin Of The Near-earth Asteroid Phaethon And The Geminids Meteor Shower", Bulletin of the American Astronomical Society, 42: 1058, Bibcode:2010DPS....42.1327D, doi:10.1051/0004-6361/200913609.
    4. Glen, William (1988), "Alvarez receives Astral Tribute", Eos, Transactions American Geophysical Union, 69 (52): 1688−1688, Bibcode:1988EOSTr..69.1688G, doi:10.1029/88EO01266.

    External links


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