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108658 (2001 ND20)
Classification: Main-belt Asteroid          SPK-ID: 2108658
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2228736073821236 3.9163e-08  
a 2.596534905543774 1.6268e-08 au
q 2.017835804451631 1.0199e-07 au
i 16.96783809587138 9.7429e-06 deg
node 225.8861216239886 1.7204e-05 deg
peri 65.09419250576828 2.9327e-05 deg
M 198.9882442740256 2.4692e-05 deg
tp 2459684.009821933793
(2022-Apr-14.50982193)
0.00010846 TDB
period 1528.233356544106
4.18
1.4362e-05
3.932e-08
d
yr
n .2355661185240005 2.2138e-09 deg/d
Q 3.175234006635916 1.9893e-08 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2001-05-23  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:11:22  

Additional Information
 Earth MOID = 1.06424 au 
 Jupiter MOID = 2.1264 au 
 T_jup = 3.321 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456815.5 (2014-Jun-07.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2241646813492157 3.8992e-08  
q 2.013568003572556 1.0153e-07 au
tp 2456628.555343130578
(2013-Dec-02.05534313)
9.3664e-05 TDB
node 225.9532422666155 1.7228e-05 deg
peri 65.09302084007388 2.9223e-05 deg
i 16.96182365866642 9.741e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2001-05-23  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:11:22  

Additional Information
 Jupiter MOID = 2.1264 au 
 T_jup = 3.321 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.520396746959212E-15 -3.928704780659036E-15 -6.170913670286153E-13 2.527500002768436E-15 -1.938269815865059E-13 -4.391832243059929E-15
q -3.928704780659036E-15 1.030813895912697E-14 2.029021177432607E-12 -6.870820829827754E-15 6.124238711115029E-13 1.21996352814659E-14
tp -6.170913670286153E-13 2.029021177432607E-12 8.77293069323195E-9 1.217795490842909E-11 2.227720128111589E-9 -1.361497721132397E-11
node 2.527500002768436E-15 -6.870820829827754E-15 1.217795490842909E-11 2.968166743947925E-10 -2.802632685547856E-10 -7.094173632605961E-11
peri -1.938269815865059E-13 6.124238711115029E-13 2.227720128111589E-9 -2.802632685547856E-10 8.539855287207894E-10 6.444090809132137E-11
i -4.391832243059929E-15 1.21996352814659E-14 -1.361497721132397E-11 -7.094173632605961E-11 6.444090809132137E-11 9.488635393146035E-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 15.2   n/a MPO459506  
diameter diameter 5.808 km 1.505 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 7.051 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.048   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

108658 (2001 ND20)          Discovered 2001-Jul-12 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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