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20954 (1158 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2020954
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1148937629410431 3.9793e-08  
a 3.057221576447825 1.9203e-08 au
q 2.705965885385186 1.1717e-07 au
i 10.03735378572894 3.6509e-06 deg
node 259.3972650004141 2.5695e-05 deg
peri 325.540103173655 3.1056e-05 deg
M 133.658950190131 1.9138e-05 deg
tp 2458275.589574468081
(2018-Jun-06.08957447)		 0.00010234 TDB
period 1952.489921701928
5.35		 1.8396e-05
5.037e-08		 d
yr
n .1843799530018566 1.7372e-09 deg/d
Q 3.408477267510464 2.141e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1689  
   data-arc span      15746 days (43.11 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47589  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:15:16  

Additional Information
 Earth MOID = 1.70266 au 
 Jupiter MOID = 1.65124 au 
 T_jup = 3.202 
[ 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 13.4   n/a MPO449105  

20954 (1158 T-3)          Discovered 1977-Oct-17 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
 1158 T-3 = 1998 QJ86 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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