Editing 200 Dynamene

{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
 | minorplanet= yes
 | mpc_name= (200) Dynamene
 | background= #D6D6D6
 | image= Орбита астероида 200.png
 | caption=Orbital diagram
 | name= 200 Dynamene
 | alt_names= A879 OA; 1904 CA;<br/>1955 HZ; {{mp|1961 TO|1}};<br/>{{mp|1974 HE|1}}
 | pronounced={{IPAc-en|d|aɪ|'|n|æ|m|ᵻ|n|iː}}<ref>Noah Webster (1884) ''A Practical Dictionary of the English Language''</ref>
 | discoverer= [[Christian Heinrich Friedrich Peters|C. H. F. Peters]], 1879
 | mp_category= [[Asteroid belt|Main belt]]
 | orbit_ref= <ref name="JPL"/>
 | semimajor= {{Convert|2.7374|AU|Gm|abbr=on}}
 | perihelion= {{Convert|2.3728|AU|Gm|abbr=on}}
 | aphelion= {{Convert|3.1020|AU|Gm|abbr=on|lk=on}}
 | period= 4.53 [[Julian year (astronomy)|yr]] (1654.3 [[Julian year (astronomy)|d]])
 | inclination= 6.8957°
 | eccentricity= 0.13320
 | dimensions= {{val|128.36|2.1|ul=km}}<ref name="JPL"/><br />130.71 ± 3.01 km<ref name="Carry2012"/>
 | mass= {{nowrap|(1.07 ± 0.16) × 10<sup>19</sup> kg<ref name="Carry2012"/>}}
 | density= 9.14 ± 1.51 g/cm<sup>3</sup><ref name="Carry2012"/>
 | rotation= {{Convert|37.394|h|d|abbr=on|lk=on}}<ref name="JPL"/><ref name="Pilcher39"/>
 | spectral_type= [[C-type asteroid|C]]
 | abs_magnitude= 8.26
 | albedo= {{val|0.0533|0.002}}
 | discovered= 27 July 1879
 | epoch= 31 July 2016 ([[Julian day|JD]] 2457600.5)
 | asc_node= 324.57°
 | arg_peri= 85.089°
 | mean_anomaly= 10.506[[Degree (angle)|°]]
 | mean_motion= {{Deg2DMS|0.21762|sup=ms}} / day
 | observation_arc= 136.47 yr (49845 d)
 | uncertainty= 0
 | moid= {{Convert|1.39358|AU|Gm|abbr=on}}
 | jupiter_moid= {{Convert|2.2934|AU|Gm|abbr=on}}
 | tisserand= 3.328
}}

'''200 Dynamene''' is a large dark [[Asteroid belt|main-belt]] [[asteroid]] that was discovered by German-American astronomer [[Christian Heinrich Friedrich Peters]] on July 27, 1879, in [[Clinton, Oneida County, New York|Clinton, New York]]. The name derives from [[Dynamene]], one of the fifty [[Nereid]]s in Greek mythology. Based upon its spectrum, 200 Dynamene is classified as a [[C-type asteroid]], indicating that it probably has a primitive composition similar to the [[carbonaceous chondrite]] [[meteorite]]s. The spectra of the asteroid displays evidence of aqueous alteration.<ref name=Fornasier1999/>

[[Photometry (astronomy)|Photometric]] observations of this asteroid at the Organ Mesa Observatory in [[Las Cruces, New Mexico]] in 2011 gave a [[light curve]] with a period of 37.394 ± 0.002 hours and a brightness variation of 0.10 ± 0.01 in [[Magnitude (astronomy)|magnitude]]. The curve is asymmetrical with four uneven minima and maxima.<ref name="Pilcher39"/>

[[Occultation#Occultations by asteroids|Occultation]] data from October 9, 2006, using 15 [[Chord (astronomy)|chords]] shows the asteroid is about 130&nbsp;km in diameter.<ref name=asteroidoccultation/>

== References ==
{{Reflist|refs=

<ref name="JPL">{{Citation
 | title     = 200 Dynamene
 | work      = JPL Small-Body Database Browser
 | publisher = [[NASA Jet Propulsion Laboratory]]
 | url       = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=200
 | accessdate= 12 May 2016
 | postscript= .}}</ref>

<ref name=Fornasier1999>{{citation
 | title=Spectroscopic comparison of aqueous altered asteroids with CM2 carbonaceous chondrite meteorites
 | display-authors=1 | postscript=.
 | last1=Fornasier | first1=S. | last2=Lazzarin | first2=M.
 | last3=Barbieri | first3=C. | last4=Barucci | first4=M. A.
 | journal=Astronomy and Astrophysics Supplement
 | volume=135 | pages=65−73 | date=February 1999
 | doi=10.1051/aas:1999161 | bibcode=1999A&AS..135...65F | doi-access=free | url=https://ui.adsabs.harvard.edu/link_gateway/1999A&AS..135...65F/PUB_PDF }}</ref>

<ref name="Carry2012">{{Citation
 | first1    = B.
 | last1     = Carry
 | title     = Density of asteroids
 | journal      = Planetary and Space Science
 | volume    = 73
 | issue = 1
 | pages      = 98–118
 |date=December 2012
 | doi       = 10.1016/j.pss.2012.03.009
 | bibcode   = 2012P&SS...73...98C
 | postscript= .
 |arxiv = 1203.4336 }} See Table 1.</ref>

<ref name="Pilcher39">{{Citation
 | last1     = Pilcher
 | first1    = Frederick
 | title     = Rotation Period Determinations for 31 Euphrosyne, 65 Cybele, 154 Bertha 177 Irma, 200 Dynamene, 724 Hapag, 880 Herba, and 1470 Carla
 | journal      = The Minor Planet Bulletin
 | volume    = 39
 | issue     = 2
 | pages     = 57–60
 |date=April 2012
 | bibcode   = 2012MPBu...39...57P
 | postscript= .}}</ref>

<ref name=asteroidoccultation>{{cite web
  |publisher=IOTA (International Occultation Timing Association)
  |title=2006 Asteroid Occultation Reports for North America
  |url=http://www.asteroidoccultation.com/observations/Results/index2006.html
  |accessdate=2015-06-08
  |archive-url=https://web.archive.org/web/20120428111824/http://www.asteroidoccultation.com/observations/Results/index2006.html
  |archive-date=2012-04-28
  |url-status=dead
  }} [http://www.asteroidoccultation.com/observations/Results/Data2006/20061009OCCULTDynameneProfile.jpg (chords)] {{Webarchive|url=https://web.archive.org/web/20150910101607/http://www.asteroidoccultation.com/observations/Results/Data2006/20061009OCCULTDynameneProfile.jpg |date=10 September 2015 }}</ref>

}} <!-- end of reflist -->

== External links ==
* {{AstDys|200}}
* {{JPL small body}}

{{Minor planets navigator |199 Byblis |number=200 |201 Penelope}}
{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:Dynamene}}
[[Category:Background asteroids|000200]]
[[Category:Discoveries by Christian Peters]]
[[Category:Named minor planets]]
[[Category:Objects observed by stellar occultation|000200]]
[[Category:C-type asteroids (Tholen)|000200]]
[[Category:Ch-type asteroids (SMASS)|000200]]
[[Category:Astronomical objects discovered in 1879|18790727]]


{{C-beltasteroid-stub}}