170 Maria

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170 Maria
Asteroid-maria.jpg
Asteroid Maria passing near a cluster of galaxies as seen by a four inch telescope over a period of nearly two hours.
Discovery
Discovered by J. Perrotin
Discovery date10 January 1877
Designations
(170) Maria
Pronunciation /məˈrə/ mə-REE
A877 AA; 1958 AC
Main belt (Maria)
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 116.69 yr (42622 d)
Aphelion 2.7161  AU (406.32  Gm)
Perihelion 2.3923 AU (357.88 Gm)
2.5542 AU (382.10 Gm)
Eccentricity 0.063388
4.08 yr (1491.0 d)
88.062°
0° 14m 29.184s / day
Inclination 14.377°
301.34°
159.21°
Earth  MOID 1.4114 AU (211.14 Gm)
Jupiter  MOID 2.39948 AU (358.957 Gm)
TJupiter 3.392
Physical characteristics
Dimensions44.30±1.0  km
13.120  h (0.5467  d)
0.1579±0.007
S [2]
9.39

    170 Maria is a Main belt asteroid that was discovered by French astronomer Henri Joseph Perrotin on January 10, 1877. [3] Its orbit was computed by Antonio Abetti, and the asteroid was named after his sister, Maria. This is the namesake of the Maria asteroid family; one of the first asteroid families to be identified by Japanese astronomer Kiyotsugu Hirayama in 1918. [4]

    In the Tholen classification system, this is categorized as a stony S-type asteroid. [2] Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado during 2007 produced a light curve with a period of 13.120 ± 0.002 hours and a brightness range of 0.21 ± 0.02 in magnitude. Previous measurements from 2000 gave 13.14 and 5.510 hour estimates for the period. [5] Based upon its spectrum, it is classified as an S-type asteroid.

    An occultation of a star by Maria was observed from Manitoba, Canada, on June 10, 1997.

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    References

    1. Yeomans, Donald K., "170 Maria", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, archived from the original on 27 January 2016, retrieved 12 May 2016.
    2. 1 2 DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF), Icarus, vol. 202, no. 1, pp. 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, archived from the original (PDF) on 17 March 2014, retrieved 8 April 2013. See appendix A.
    3. "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, archived from the original on 13 February 2012, retrieved 7 April 2013.
    4. Veeder, G. J.; et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry" (PDF), Icarus, vol. 114, pp. 186–196, Bibcode:1995Icar..114..186V, CiteSeerX   10.1.1.31.2739 , doi:10.1006/icar.1995.1053.
    5. Warner, Brian D. (September 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory", The Minor Planet Bulletin, Bibcode:2007MPBu...34...72W.