170 Maria

170 Maria
	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
MPC designation	(170) Maria
Pronunciation	/məˈriːə/
Minor planet category	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)
Semi-major axis	2.5542 AU (382.10 Gm)
Eccentricity	0.063388
Orbital period	4.08 yr (1491.0 d)
Mean anomaly	88.062°
Mean motion	0° 14m 29.184s / day
Inclination	14.377°
Longitude of ascending node	301.34°
Argument of perihelion	159.21°
Earth MOID	1.4114 AU (211.14 Gm)
Jupiter MOID	2.39948 AU (358.957 Gm)
TJupiter	3.392
Physical characteristics
Dimensions	44.30±1.0 km
Rotation period	13.120 h (0.5467 d)
Geometric albedo	0.1579±0.007
Spectral type	S[2]
Absolute magnitude (H)	9.39

Maria (minor planet designation: 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

Yeomans, Donald K., "170 Maria", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
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, archived from the original (PDF) on 17 March 2014, retrieved 8 April 2013. See appendix A.
"Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, archived from the original on 13 February 2012, retrieved 7 April 2013.
Veeder, G. J.; et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry" (PDF), Icarus, 114, pp. 186–196, Bibcode:1995Icar..114..186V, CiteSeerX 10.1.1.31.2739, doi:10.1006/icar.1995.1053.
Warner, Brian D. (September 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory", The Minor Planet Bulletin, Bibcode:2007MPBu...34...72W.

External links

Lightcurve plot of 170 Maria, Palmer Divide Observatory, B. D. Warner (2007)
Asteroid Lightcurve Database (LCDB), query form (info)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
170 Maria at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
170 Maria at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[JPL-1] Yeomans, Donald K., "170 Maria", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.

[DeMeo2009-2] 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, archived from the original (PDF) on 17 March 2014, retrieved 8 April 2013. See appendix A.

[IAU_MPC-3] "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, archived from the original on 13 February 2012, retrieved 7 April 2013.

[Veeder1995-4] Veeder, G. J.; et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry" (PDF), Icarus, 114, pp. 186–196, Bibcode:1995Icar..114..186V, CiteSeerX 10.1.1.31.2739, doi:10.1006/icar.1995.1053.

[Warner2007-5] Warner, Brian D. (September 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory", The Minor Planet Bulletin, Bibcode:2007MPBu...34...72W.