170 Maria

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170 Maria
Asteroid Maria passing near a cluster of galaxies
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 date 10 January 1877
Designations
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)
Jupiter Tisserand parameter 3.392
Physical characteristics
Dimensions 44.30±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.

References[edit]

  1. ^ Yeomans, Donald K., "170 Maria", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 12 May 2016. 
  2. ^ a b DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF), Icarus 202 (1), pp. 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, retrieved 2013-04-08.  See appendix A.
  3. ^ "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), retrieved 2013-04-07. 
  4. ^ Veeder, G. J.; et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry", Icarus 114, pp. 186–196, Bibcode:1995Icar..114..186V, doi:10.1006/icar.1995.1053, CiteSeerX: 10.1.1.31.2739. 
  5. ^ Warner, Brian D. (September 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory", The Minor Planet Bulletin, Bibcode:2007MPBu...34...72W. 

External links[edit]