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20960 (1971 UR)
Classification: Main-belt Asteroid          SPK-ID: 2020960
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0911290811486169 3.1634e-08  
a 3.164105214953447 1.7583e-08 au
q 2.875763214057192 9.9132e-08 au
i 5.871417012889578 4.149e-06 deg
node 46.07068128025722 3.4951e-05 deg
peri 61.45392294723268 4.2032e-05 deg
M 186.6789087158026 2.4517e-05 deg
tp 2459990.245909873032
(2023-Feb-14.74590987)
0.0001421 TDB
period 2055.771313890742
5.63
1.7136e-05
4.692e-08
d
yr
n .1751167542651745 1.4597e-09 deg/d
Q 3.452447215849702 1.9186e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1947  
   data-arc span      17889 days (48.98 yr)  
   first obs. used      1971-10-26  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46784  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:59:42  

Additional Information
 Earth MOID = 1.89855 au 
 Jupiter MOID = 1.6843 au 
 T_jup = 3.189 
[ 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 13.0   n/a MPO266065  
diameter diameter 13.005 km 0.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20960 (1971 UR)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1971 UR = 1982 UW4 = 1993 TF48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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