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213959 (2003 YL21)
Classification: Main-belt Asteroid          SPK-ID: 2213959
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394951647185265 5.4764e-08  
a 2.694912660971667 2.1628e-08 au
q 2.318985375427382 1.4088e-07 au
i 3.488473905631733 4.9376e-06 deg
node 315.753239459265 9.6087e-05 deg
peri 215.8758410970777 9.8265e-05 deg
M 253.0126132738701 2.3344e-05 deg
tp 2459680.725865374067
(2022-Apr-11.22586537)
0.00010847 TDB
period 1615.903676357772
4.42
1.9452e-05
5.326e-08
d
yr
n .2227855566313431 2.6819e-09 deg/d
Q 3.070839946515953 2.4645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      282  
   data-arc span      6230 days (17.06 yr)  
   first obs. used      2003-12-17  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60258  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:44:48  

Additional Information
 Earth MOID = 1.3255 au 
 Jupiter MOID = 1.90909 au 
 T_jup = 3.353 
[ 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 16.46   n/a MPCxxxxx  

213959 (2003 YL21)          Discovered 2003-Dec-17 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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