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21223 (1995 DL)
Classification: Main-belt Asteroid          SPK-ID: 2021223
[ 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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054651561346379 4.6868e-08  
a 3.164900547759082 1.871e-08 au
q 2.83111381733907 1.4627e-07 au
i 4.284576252967039 5.1655e-06 deg
node 348.2062305730541 4.3447e-05 deg
peri 201.1073260765338 4.6641e-05 deg
M 180.7255610489366 1.9419e-05 deg
tp 2460224.628375766111
(2023-Oct-07.12837577)		 0.00011547 TDB
period 2056.546473847508
5.63		 1.8236e-05
4.993e-08		 d
yr
n .1750507487080955 1.5523e-09 deg/d
Q 3.498687278179095 2.0683e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1809  
   data-arc span      9431 days (25.82 yr)  
   first obs. used      1995-02-21  
   last obs. used      2020-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49736  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:51:27  

Additional Information
 Earth MOID = 1.83176 au 
 Jupiter MOID = 1.46946 au 
 T_jup = 3.191 
[ 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 13.47   n/a E2021B10  

21223 (1995 DL)          Discovered 1995-Feb-21 by Kobayashi, T. at Oizumi
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1995 DL = 1998 TF19 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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