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70100 (1999 JO121)
Classification: Main-belt Asteroid          SPK-ID: 2070100
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1324388423847582 5.1839e-08  
a 2.288458418020566 1.1103e-08 au
q 1.985377634292268 1.1929e-07 au
i 5.843312955658147 4.8451e-06 deg
node 230.7531367661779 5.1333e-05 deg
peri 342.5110334589348 5.4048e-05 deg
M 50.9722107591175 1.8589e-05 deg
tp 2458821.462528987874
(2019-Dec-03.96252899)
6.4956e-05 TDB
period 1264.482913424281
3.46
9.2025e-06
2.52e-08
d
yr
n .2847013559282526 2.072e-09 deg/d
Q 2.591539201748866 1.2574e-08 au
  Orbit Determination Parameters
   # obs. used (total)      665  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      1999-05-13  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57853  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:33:41  

Additional Information
 Earth MOID = .97959 au 
 Jupiter MOID = 2.38271 au 
 T_jup = 3.582 
[ 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 15.9   n/a MPO426418  
diameter diameter 2.177 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.148   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70100 (1999 JO121)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JO121 = 2000 WR159 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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