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70966 (1999 XD18)
Classification: Main-belt Asteroid          SPK-ID: 2070966
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09091566798586924 7.8851e-08  
a 2.579368046547222 1.8734e-08 au
q 2.344863077613975 1.9565e-07 au
i 15.89013519689841 7.7744e-06 deg
node 32.44504424868706 1.8342e-05 deg
peri 18.25294017127401 3.5624e-05 deg
M 320.1292589235241 3.2752e-05 deg
tp 2459168.079236430755
(2020-Nov-14.57923643)
0.00013822 TDB
period 1513.102678461784
4.14
1.6485e-05
4.513e-08
d
yr
n .2379217254218167 2.5921e-09 deg/d
Q 2.813873015480469 2.0438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      791  
   data-arc span      11062 days (30.29 yr)  
   first obs. used      1989-04-03  
   last obs. used      2019-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57081  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:23:47  

Additional Information
 Earth MOID = 1.35759 au 
 Jupiter MOID = 2.57604 au 
 T_jup = 3.366 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456291.5 (2012-Dec-30.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0925871702754175 7.9397e-08  
q 2.341416743149654 1.9785e-07 au
tp 2456137.470693444131
(2012-Jul-28.97069344)
0.00012838 TDB
node 32.54140215909747 1.8302e-05 deg
peri 17.39774717510499 3.5033e-05 deg
i 15.91087318734569 7.7818e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      791  
   data-arc span      11062 days (30.29 yr)  
   first obs. used      1989-04-03  
   last obs. used      2019-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57081  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:23:47  

Additional Information
 Jupiter MOID = 2.57604 au 
 T_jup = 3.366 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.303849748805942E-15 -1.566378604084507E-14 -8.534395788164885E-13 2.058570570044066E-14 -4.189340853869321E-13 -1.303087156654454E-14
q -1.566378604084507E-14 3.914317217446304E-14 2.43250538602868E-12 -5.228298511033888E-14 1.115979570340106E-12 3.282996084645055E-14
tp -8.534395788164885E-13 2.43250538602868E-12 1.648182737944259E-8 1.436810438729448E-11 3.835356511685426E-9 -7.728840056474874E-12
node 2.058570570044066E-14 -5.228298511033888E-14 1.436810438729448E-11 3.349535500845678E-10 -3.188886449854171E-10 -9.081062745986013E-12
peri -4.189340853869321E-13 1.115979570340106E-12 3.835356511685426E-9 -3.188886449854171E-10 1.227287573244659E-9 7.460094318552196E-12
i -1.303087156654454E-14 3.282996084645055E-14 -7.728840056474874E-12 -9.081062745986013E-12 7.460094318552196E-12 6.055607501217573E-11

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 14.6   n/a MPO319896  
diameter diameter 3.123 km 0.532 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.315   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70966 (1999 XD18)          Discovered 1999-Dec-03 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XD18 = 1989 GQ5 = 2001 CG34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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