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JPL Small-Body Database Browser
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20158 (1996 TD21)
Classification: Main-belt Asteroid          SPK-ID: 2020158
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0996407565225509 3.8907e-08  
a 2.316317441750032 8.8096e-09 au
q 2.085517819507679 9.082e-08 au
i 1.862809029146077 4.4759e-06 deg
node 31.08240765365615 0.00011516 deg
peri 194.5924729438733 0.00011687 deg
M 306.9681596352881 2.0263e-05 deg
tp 2458790.183581394126
(2019-Nov-02.68358139)
7.2553e-05 TDB
period 1287.643212686312
3.53
7.3459e-06
2.011e-08
d
yr
n .2795805518587399 1.595e-09 deg/d
Q 2.547117063992385 9.6874e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1230  
   data-arc span      10287 days (28.16 yr)  
   first obs. used      1991-03-09  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54164  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:49:52  

Additional Information
 Earth MOID = 1.07615 au 
 Jupiter MOID = 2.4298 au 
 T_jup = 3.573 
[ 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 15.5   n/a MPO384927  

20158 (1996 TD21)          Discovered 1996-Oct-05 by Spacewatch at Kitt Peak
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 TD21 = 1991 EA8 = 1992 SZ6 = 1998 DD16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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