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200 Dynamene
Classification: Main-belt Asteroid          SPK-ID: 2000200
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 92 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1320431973617592 3.6685e-08  
a 2.73703288062883 8.3334e-09 au
q 2.375626307786333 9.9902e-08 au
i 6.899690943270676 3.9939e-06 deg
node 324.2697986817258 3.4376e-05 deg
peri 86.76120117573008 3.8031e-05 deg
M 313.4543988614005 1.7466e-05 deg
tp 2459214.342780047539
(2020-Dec-30.84278005)		 8.0721e-05 TDB
period 1653.935042924453
4.53		 7.5536e-06
2.068e-08		 d
yr
n .2176627199115726 9.9407e-10 deg/d
Q 3.098439453471328 9.4338e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3166  
   data-arc span      51243 days (140.30 yr)  
   first obs. used      1879-07-28  
   last obs. used      2019-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40485  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:20:41  

Additional Information
 Earth MOID = 1.39836 au 
 Jupiter MOID = 2.28196 au 
 T_jup = 3.329 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.3   n/a MPO502154 IRAS observations used: 24
diameter diameter 128.301 km 1.946 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 37.394 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2012) Minor Planet Bull. 39, 57-60.]
geometric albedo albedo 0.053   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.727   0.009 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=2.28, mean=10.14, max.=17.02) deg.
U-B UB 0.375   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=2.12, mean=6.41, max.=16.05) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

200 Dynamene          Discovered 1879-Jul-27 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1955 HZ = 1961 TO1 = 1974 HE1 = A904 CA 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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