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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09171390089057491 3.4017e-08  
a 3.159230437189891 1.7806e-08 au
q 2.86948508998297 1.0522e-07 au
i 5.896951810639046 5.2407e-06 deg
node 46.31492513042719 3.645e-05 deg
peri 59.33636535647423 4.7125e-05 deg
M 118.7304803281955 2.9023e-05 deg
tp 2457924.058711355852
(2017-Jun-19.55871136)
0.0001653 TDB
period 2051.022309004032
5.62
1.734e-05
4.747e-08
d
yr
n .1755222253895496 1.4839e-09 deg/d
Q 3.448975784396813 1.9439e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1708  
   data-arc span      17445 days (47.76 yr)  
   first obs. used      1971-10-26  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47469  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:47:44  

Additional Information
 Earth MOID = 1.89228 au 
 Jupiter MOID = 1.69644 au 
 T_jup = 3.191 
[ 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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