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11217 (1999 JC4)
Classification: Inner Main-belt Asteroid          SPK-ID: 2011217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06951892328435673 3.5039e-08  
a 1.944050030175247 6.4531e-09 au
q 1.808901765266542 6.7789e-08 au
i 19.29079634142184 4.933e-06 deg
node 224.6423865596714 1.1173e-05 deg
peri 69.84450292097932 3.9103e-05 deg
M 208.1108160627878 3.9441e-05 deg
tp 2459418.218712581947
(2021-Jul-22.71871258)
0.00010942 TDB
period 990.0555960038903
2.71
4.9296e-06
1.35e-08
d
yr
n .3636159438450216 1.8105e-09 deg/d
Q 2.079198295083951 6.9017e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1205  
   data-arc span      15040 days (41.18 yr)  
   first obs. used      1978-11-28  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:58:37  

Additional Information
 Earth MOID = .85182 au 
 Jupiter MOID = 3.00427 au 
 T_jup = 3.828 
[ 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 15.1   n/a MPO395109  
rotation period rot_per 4.8219 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 41, 54-57.]

11217 (1999 JC4)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 19990728/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JC4 = 1978 WZ20 = 1989 UM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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