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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09214052532565939 3.1423e-08  
a 3.159634089549506 1.7713e-08 au
q 2.868503744701553 9.8384e-08 au
i 5.867799547107557 4.1406e-06 deg
node 45.85837301906498 3.4409e-05 deg
peri 62.64152839907858 4.1327e-05 deg
M 220.6292413682216 2.4233e-05 deg
tp 2459994.687004591717
(2023-Feb-19.18700459)
0.00013971 TDB
period 2051.41540779292
5.62
1.725e-05
4.723e-08
d
yr
n .1754885912587141 1.4757e-09 deg/d
Q 3.450764434397459 1.9345e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1960  
   data-arc span      17889 days (48.98 yr)  
   first obs. used      1971-10-26  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46657  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:16  

Additional Information
 Earth MOID = 1.89126 au 
 Jupiter MOID = 1.68268 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 13.05   n/a E2021B10  
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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