3581 Alvarez

Alvarez

Discovery
Discovered by	Shoemaker, C. and Shoemaker, E.
Discovery site	Palomar
Discovery date	23 April 1985
Designations
MPC designation	3581
Alternative names	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)
Semi-major axis	2.775394 AU (415.1930 Gm)
Eccentricity	0.4070436
Orbital period	4.62 yr (1688.8 d)
Mean anomaly	183.71561°
Mean motion	0° 12^m 47.396^s / day
Inclination	28.79773°
Longitude of ascending node	217.59491°
Argument of perihelion	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
Rotation period	33.42 h (1.393 d)
Sidereal rotation period	33.42 h[1]
Spectral type	B[1]
Absolute magnitude (H)	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] With a diameter of ~14 km, it is one of the largest Mars-crossing asteroids.

References

1. "JPL Small-Body Database Browser: 3581 Alvarez". Jet Propulsion Laboratory. Retrieved 14 April 2016.

External links

• 3581 Alvarez at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters