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123877 (2001 DM31)
Classification: Main-belt Asteroid          SPK-ID: 2123877
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03473530667834943 5.4117e-08  
a 2.983367305623297 3.1074e-08 au
q 2.879739127328311 1.6551e-07 au
i 11.73854986880756 6.7128e-06 deg
node 358.7769976678854 2.7203e-05 deg
peri 249.4861522348316 0.00010301 deg
M 182.3331171266679 0.00010274 deg
tp 2459929.386172485847
(2022-Dec-15.88617249)
0.00054073 TDB
period 1882.168565614535
5.15
2.9406e-05
8.051e-08
d
yr
n .1912687346802324 2.9883e-09 deg/d
Q 3.086995483918283 3.2153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      7720 days (21.14 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53023  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:27:56  

Additional Information
 Earth MOID = 1.89345 au 
 Jupiter MOID = 1.93495 au 
 T_jup = 3.226 
[ 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 14.9   n/a MPO453712  
diameter diameter 5.709 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123877 (2001 DM31)          Discovered 2001-Feb-17 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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