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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151223505645164 4.0069e-08  
a 3.058580981116909 2.1136e-08 au
q 2.706469949178805 1.1769e-07 au
i 10.03731676185359 4.1765e-06 deg
node 259.3986336360702 2.8351e-05 deg
peri 325.7688202188701 3.5469e-05 deg
M 59.6638497137299 2.1569e-05 deg
tp 2458276.692298641800
(2018-Jun-07.19229864)		 0.00011717 TDB
period 1953.792339050606
5.35		 2.0253e-05
5.545e-08		 d
yr
n .1842570434967171 1.91e-09 deg/d
Q 3.410692013055012 2.357e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1363  
   data-arc span      15391 days (42.14 yr)  
   first obs. used      1977-10-07  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50279  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:47:44  

Additional Information
 Earth MOID = 1.70305 au 
 Jupiter MOID = 1.6491 au 
 T_jup = 3.201 
[ 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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