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170 Maria

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S-type Main-belt asteroid

170 Maria
Asteroid Maria passing near a cluster of galaxiesAsteroid Maria passing near a cluster of galaxies as seen by a four inch telescope over a period of nearly two hours.
Discovery
Discovered byJ. Perrotin
Discovery date10 January 1877
Designations
MPC designation(170) Maria
Pronunciation/məˈriːə/ mə-REE-ə
Alternative designationsA877 AA; 1958 AC
Minor planet categoryMain belt (Maria)
Orbital characteristics
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc116.69 yr (42622 d)
Aphelion2.7161 AU (406.32 Gm)
Perihelion2.3923 AU (357.88 Gm)
Semi-major axis2.5542 AU (382.10 Gm)
Eccentricity0.063388
Orbital period (sidereal)4.08 yr (1491.0 d)
Mean anomaly88.062°
Mean motion0° 14 29.184 / day
Inclination14.377°
Longitude of ascending node301.34°
Argument of perihelion159.21°
Earth MOID1.4114 AU (211.14 Gm)
Jupiter MOID2.39948 AU (358.957 Gm)
TJupiter3.392
Physical characteristics
Dimensions44.30±1.0 km
Synodic rotation period13.120 h (0.5467 d)
Geometric albedo0.1579±0.007
Spectral typeS
Absolute magnitude (H)9.39

170 Maria is a Main belt asteroid that was discovered by French astronomer Henri Joseph Perrotin on January 10, 1877. 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. This family may be the parent body of the large near-Earth objects 433 Eros and 1036 Ganymed.

In the Tholen classification system, this is categorized as a stony S-type asteroid based on its spectrum. 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.

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

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. ^ DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF), Icarus, 202 (1): 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, 114 (1): 186–196, Bibcode:1995Icar..114..186V, CiteSeerX 10.1.1.31.2739, doi:10.1006/icar.1995.1053.
  5. Aljbaae, S.; et al. (November 2017), "The Maria asteroid family", Monthly Notices of the Royal Astronomical Society, 471 (4): 4820–4826, Bibcode:2017MNRAS.471.4820A, doi:10.1093/mnras/stx1921, hdl:11449/179760.
  6. Warner, Brian D. (September 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory", The Minor Planet Bulletin, 34 (3): 72, Bibcode:2007MPBu...34...72W.

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