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70968 (1999 XA20)
Classification: Main-belt Asteroid          SPK-ID: 2070968
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .109310246989638 5.5236e-08  
a 2.749217013583521 1.34e-08 au
q 2.448699422800591 1.5341e-07 au
i 13.91185141217516 5.967e-06 deg
node 46.95406713306829 1.9499e-05 deg
peri 184.692565797594 3.0619e-05 deg
M 338.6113702021175 2.4043e-05 deg
tp 2459099.421894248684
(2020-Sep-06.92189425)
0.00011125 TDB
period 1664.991271813584
4.56
1.2173e-05
3.333e-08
d
yr
n .2162173496608614 1.5808e-09 deg/d
Q 3.049734604366451 1.4865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1269  
   data-arc span      7561 days (20.70 yr)  
   first obs. used      1999-10-04  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49209  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:37:35  

Additional Information
 Earth MOID = 1.43859 au 
 Jupiter MOID = 1.93822 au 
 T_jup = 3.295 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457113.5 (2015-Apr-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1098375275095652 5.5457e-08  
q 2.449039442387514 1.5433e-07 au
tp 2457430.215589966519
(2016-Feb-11.71558997)
0.00010936 TDB
node 46.99777137575117 1.9505e-05 deg
peri 183.8801736930973 3.0366e-05 deg
i 13.9077757206707 5.9646e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1269  
   data-arc span      7561 days (20.70 yr)  
   first obs. used      1999-10-04  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49209  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:37:35  

Additional Information
 Jupiter MOID = 1.93822 au 
 T_jup = 3.295 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.075448160227198E-15 -8.533231634085433E-15 -3.2065223266802E-12 2.892638325868239E-15 -6.232409555904371E-13 -4.649576688812874E-15
q -8.533231634085433E-15 2.381772339776349E-14 8.823341550558147E-12 -5.622120569851804E-15 1.705042385079112E-12 1.185842186297235E-14
tp -3.2065223266802E-12 8.823341550558147E-12 1.195939115195761E-8 -1.783773263397682E-11 2.566361159386139E-9 1.424448498538802E-11
node 2.892638325868239E-15 -5.622120569851804E-15 -1.783773263397682E-11 3.804540020135094E-10 -3.728309167630647E-10 -5.0956355001071E-11
peri -6.232409555904371E-13 1.705042385079112E-12 2.566361159386139E-9 -3.728309167630647E-10 9.221102350790604E-10 5.254238259334508E-11
i -4.649576688812874E-15 1.185842186297235E-14 1.424448498538802E-11 -5.0956355001071E-11 5.254238259334508E-11 3.557699566091838E-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 13.9   n/a MPO337797  
diameter diameter 3.989 km 0.401 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.403   0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70968 (1999 XA20)          Discovered 1999-Dec-05 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XA20 = 2000 XP10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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