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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3125648780536827 4.7926e-08  
a 2.612311959368265 1.3896e-08 au
q 1.795794990350146 1.287e-07 au
i 6.127458378834847 4.3049e-06 deg
node 104.82876484 5.3385e-05 deg
peri 323.064706677008 5.3861e-05 deg
M 189.6140455699341 7.7584e-06 deg
tp 2459330.406574395766
(2021-Apr-25.90657440)
3.6353e-05 TDB
period 1542.183260711945
4.22
1.2306e-05
3.369e-08
d
yr
n .2334352921414844 1.8627e-09 deg/d
Q 3.428828928386384 1.824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1222  
   data-arc span      29849 days (81.72 yr)  
   first obs. used      1936-10-21  
   last obs. used      2018-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5073  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 18:03:06  

Additional Information
 Earth MOID = .814234 au 
 Jupiter MOID = 1.90375 au 
 T_jup = 3.330 
[ 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 13.7   n/a MPO449105  
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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