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20959 (1936 UG)
Classification: Main-belt Asteroid          SPK-ID: 2020959
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 .3125077047012408 3.9997e-08  
a 2.607463892729658 1.2148e-08 au
q 1.792611336521351 1.1016e-07 au
i 6.136762197113192 3.3184e-06 deg
node 104.7986635430338 4.1033e-05 deg
peri 323.5791476581842 4.1676e-05 deg
M 329.1647750932592 7.991e-06 deg
tp 2459332.225695810853
(2021-Apr-27.72569581)
3.4642e-05 TDB
period 1537.89215532981
4.21
1.0748e-05
2.943e-08
d
yr
n .234086635237954 1.6359e-09 deg/d
Q 3.422316448937966 1.5945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1840  
   data-arc span      30794 days (84.31 yr)  
   first obs. used      1936-10-21  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47065  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:15  

Additional Information
 Earth MOID = .810747 au 
 Jupiter MOID = 1.90909 au 
 T_jup = 3.333 
[ 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 13.78   n/a E2021B10  
diameter diameter 5.151 km 0.375 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.242   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20959 (1936 UG)          Discovered 1936-Oct-21 by Laugier, M. at Nice
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1936 UG = 1991 YJ = 1999 RM173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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