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20944 (2200 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2020944
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 .1244199020004062 2.8322e-08  
a 2.430361783224664 8.4372e-09 au
q 2.127976408330319 7.0142e-08 au
i .3120926828989098 3.1444e-06 deg
node 334.606650238203 0.00061007 deg
peri 311.0575209907139 0.00061023 deg
M 234.181920038244 1.6208e-05 deg
tp 2459684.165790062706
(2022-Apr-14.66579006)
6.3483e-05 TDB
period 1383.900346241972
3.79
7.2065e-06
1.973e-08
d
yr
n .2601343376909993 1.3546e-09 deg/d
Q 2.732747158119009 9.4869e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1580  
   data-arc span      17344 days (47.49 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:07  

Additional Information
 Earth MOID = 1.10964 au 
 Jupiter MOID = 2.39679 au 
 T_jup = 3.497 
[ 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 15.15   n/a E2021B10  
diameter diameter 6.055 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20944 (2200 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

[ show close-approach data ]
Alternate Designations
 2200 T-2 = 1991 HU4 = 1996 TR18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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