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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2229202025860073 3.4032e-08  
a 2.595803729972761 1.5624e-08 au
q 2.017146636613719 9.0516e-08 au
i 16.96950427163807 7.3323e-06 deg
node 225.8685974798342 1.6923e-05 deg
peri 65.19442832813752 2.7371e-05 deg
M 292.1872206041775 2.4292e-05 deg
tp 2459684.249944933972
(2022-Apr-14.74994493)
0.00010484 TDB
period 1527.587883864428
4.18
1.3792e-05
3.776e-08
d
yr
n .2356656555099711 2.1277e-09 deg/d
Q 3.174460823331802 1.9107e-08 au
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      7324 days (20.05 yr)  
   first obs. used      2001-05-23  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:17:37  

Additional Information
 Earth MOID = 1.06355 au 
 Jupiter MOID = 2.12584 au 
 T_jup = 3.322 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.17   n/a E2021B55  
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. 2020-October); 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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