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15215 (1981 EH13)
Classification: Main-belt Asteroid          SPK-ID: 2015215
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2162787702675511 3.5839e-08  
a 2.399121674997835 7.0966e-09 au
q 1.880242589407076 8.66e-08 au
i 2.983904704356898 3.514e-06 deg
node 256.4264746333204 7.0666e-05 deg
peri 65.89598060600564 7.1293e-05 deg
M 73.19289615539213 7.5264e-06 deg
tp 2458724.541821456072
(2019-Aug-29.04182146)
2.8561e-05 TDB
period 1357.303092159381
3.72
6.0224e-06
1.649e-08
d
yr
n .2652318425262433 1.1768e-09 deg/d
Q 2.918000760588594 8.6315e-09 au
  Orbit Determination Parameters
   # obs. used (total)      985  
   data-arc span      15473 days (42.36 yr)  
   first obs. used      1978-07-07  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51683  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:26:37  

Additional Information
 Earth MOID = .87014 au 
 Jupiter MOID = 2.41368 au 
 T_jup = 3.493 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2169171918258431 3.5796e-08  
q 1.878542206669708 8.6593e-08 au
tp 2457368.285477094557
(2015-Dec-11.78547709)
3.0142e-05 TDB
node 256.4542603775437 7.0728e-05 deg
peri 66.09300388107798 7.1353e-05 deg
i 2.982421796876229 3.5129e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      985  
   data-arc span      15473 days (42.36 yr)  
   first obs. used      1978-07-07  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51683  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:26:37  

Additional Information
 Jupiter MOID = 2.41368 au 
 T_jup = 3.493 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.2813848018159E-15 -3.093258400611018E-15 1.523369745269961E-14 1.509917068389179E-14 1.904637253460247E-14 -2.245106523392449E-15
q -3.093258400611018E-15 7.498357879421087E-15 -1.003888867100077E-13 -3.700706384458365E-14 -6.52970283011891E-14 5.546168724911273E-15
tp 1.523369745269961E-14 -1.003888867100077E-13 9.085282008933867E-10 1.520847288309607E-12 2.947050847490092E-10 7.207541838399091E-14
node 1.509917068389179E-14 -3.700706384458365E-14 1.520847288309607E-12 5.002497829316435E-9 -4.994799856497968E-9 4.444762481464514E-11
peri 1.904637253460247E-14 -6.52970283011891E-14 2.947050847490092E-10 -4.994799856497968E-9 5.091211888689546E-9 -4.443237801621189E-11
i -2.245106523392449E-15 5.546168724911273E-15 7.207541838399091E-14 4.444762481464514E-11 -4.443237801621189E-11 1.234072965968151E-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 15.2   n/a MPO502285  

15215 (1981 EH13)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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