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20937 (1005 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2020937
[ 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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0931122767046146 4.0455e-08  
a 3.030729793798143 1.5655e-08 au
q 2.74853164262109 1.3098e-07 au
i 2.19715004199389 3.0998e-06 deg
node 207.0530087301135 0.00010136 deg
peri 166.317166789538 0.0001033 deg
M 332.343139364056 2.0477e-05 deg
tp 2459348.553826007540
(2021-May-14.05382601)		 0.00010991 TDB
period 1927.166574121012
5.28		 1.4932e-05
4.088e-08		 d
yr
n .1868027418253647 1.4474e-09 deg/d
Q 3.312927944975195 1.7113e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      17283 days (47.32 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53223  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:01  

Additional Information
 Earth MOID = 1.74754 au 
 Jupiter MOID = 2.15398 au 
 T_jup = 3.235 
[ 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 13.87   n/a E2021B10  
diameter diameter 4.214 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.361   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20937 (1005 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1005 T-2 = 1998 KA30 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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