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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054651537373851 4.679e-08  
a 3.164900544638976 1.8704e-08 au
q 2.831113822135093 1.46e-07 au
i 4.284576165063279 5.156e-06 deg
node 348.2062296621663 4.3418e-05 deg
peri 201.1073271030701 4.6613e-05 deg
M 180.7255610681148 1.9412e-05 deg
tp 2460224.628374142103
(2023-Oct-07.12837414)
0.00011543 TDB
period 2056.546470806349
5.63
1.823e-05
4.991e-08
d
yr
n .1750507489669553 1.5517e-09 deg/d
Q 3.498687267142859 2.0676e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1828  
   data-arc span      9483 days (25.96 yr)  
   first obs. used      1995-02-21  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .496  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:44  

Additional Information
 Earth MOID = 1.83176 au 
 Jupiter MOID = 1.46946 au 
 T_jup = 3.191 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457281.5 (2015-Sep-16.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1026267578045843 4.7234e-08  
q 2.843614194781629 1.4706e-07 au
tp 2458173.341121440815
(2018-Feb-23.84112144)
0.00010915 TDB
node 348.4504752669213 4.3361e-05 deg
peri 202.0907740300621 4.6695e-05 deg
i 4.285465339328926 5.1578e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1828  
   data-arc span      9483 days (25.96 yr)  
   first obs. used      1995-02-21  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .496  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:44  

Additional Information
 Jupiter MOID = 1.46946 au 
 T_jup = 3.191 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.231065576300362E-15 -6.902235797826019E-15 -6.797369042132489E-13 -1.440032586249707E-15 -1.258091987861885E-13 6.080967928311325E-16
q -6.902235797826019E-15 2.162697774406539E-14 2.825908139228334E-12 5.899873513061998E-15 4.822917042974179E-13 -1.249110156534964E-15
tp -6.797369042132489E-13 2.825908139228334E-12 1.191368739797809E-8 5.563055299819596E-13 1.896339351956738E-9 9.023782383196054E-13
node -1.440032586249707E-15 5.899873513061998E-15 5.563055299819596E-13 1.880141187718092E-9 -1.874552659356581E-9 4.546825631822369E-11
peri -1.258091987861885E-13 4.822917042974179E-13 1.896339351956738E-9 -1.874552659356581E-9 2.180452328952971E-9 -4.525821653136383E-11
i 6.080967928311325E-16 -1.249110156534964E-15 9.023782383196054E-13 4.546825631822369E-11 -4.525821653136383E-11 2.660320429618393E-11

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

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