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20920 (6653 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2020920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08706125651392937 4.4063e-08  
a 2.674057138298037 1.266e-08 au
q 2.441250363847768 1.2163e-07 au
i 3.613243646815826 3.4965e-06 deg
node 131.6081820004302 7.704e-05 deg
peri 285.0958208026558 8.0357e-05 deg
M 234.2878563777674 2.3572e-05 deg
tp 2459758.236648186700
(2022-Jun-27.73664819)
0.0001061 TDB
period 1597.182162055682
4.37
1.1343e-05
3.106e-08
d
yr
n .2253969575622205 1.6007e-09 deg/d
Q 2.906863912748307 1.3762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1217  
   data-arc span      21847 days (59.81 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49404  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:34:45  

Additional Information
 Earth MOID = 1.45545 au 
 Jupiter MOID = 2.35671 au 
 T_jup = 3.371 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.66   n/a E2021B10  
diameter diameter 4.186 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20920 (6653 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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