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JPL Small-Body Database Browser
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108585 (2001 MS9)
Classification: Main-belt Asteroid          SPK-ID: 2108585
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276733187126289 5.3485e-08  
a 2.368915515502877 1.0943e-08 au
q 2.066468209888787 1.2593e-07 au
i 7.189407148350638 6.1868e-06 deg
node 25.00203970771387 3.0233e-05 deg
peri 323.4167368819646 3.4712e-05 deg
M 19.55768525679133 1.8245e-05 deg
tp 2458928.150132942918
(2020-Mar-19.65013294)
6.731e-05 TDB
period 1331.750245418488
3.65
9.2279e-06
2.526e-08
d
yr
n .2703209563793803 1.8731e-09 deg/d
Q 2.671362821116968 1.234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      7383 days (20.21 yr)  
   first obs. used      1998-11-18  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56546  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:10:29  

Additional Information
 Earth MOID = 1.06583 au 
 Jupiter MOID = 2.75075 au 
 T_jup = 3.524 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456682.5 (2014-Jan-25.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1277513971563355 5.3583e-08  
q 2.067611726477422 1.2632e-07 au
tp 2456265.205362589751
(2012-Dec-03.70536259)
6.3151e-05 TDB
node 25.10194721149129 3.0212e-05 deg
peri 323.7182512667535 3.4683e-05 deg
i 7.191422666363092 6.187e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      7383 days (20.21 yr)  
   first obs. used      1998-11-18  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56546  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:10:29  

Additional Information
 Jupiter MOID = 2.75075 au 
 T_jup = 3.524 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.871184901504788E-15 -6.749402490066116E-15 1.44939139163051E-12 9.083942687286603E-16 3.714930121543832E-13 -8.140144164995842E-16
q -6.749402490066116E-15 1.595657994293812E-14 -3.388437752865435E-12 -2.660210678828671E-15 -8.643387748976645E-13 1.757646928654584E-15
tp 1.44939139163051E-12 -3.388437752865435E-12 3.988058704155159E-9 -2.320517470666521E-12 1.084224231772831E-9 -3.513784587426909E-12
node 9.083942687286603E-16 -2.660210678828671E-15 -2.320517470666521E-12 9.127532276238954E-10 -9.055685728482014E-10 -2.886775279653711E-11
peri 3.714930121543832E-13 -8.643387748976645E-13 1.084224231772831E-9 -9.055685728482014E-10 1.20287679023549E-9 2.765336244825315E-11
i -8.140144164995842E-16 1.757646928654584E-15 -3.513784587426909E-12 -2.886775279653711E-11 2.765336244825315E-11 3.827931135340808E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO436522  
diameter diameter 2.061 km 0.454 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.199   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108585 (2001 MS9)          Discovered 2001-Jun-22 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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