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192287 (1981 EL22)
Classification: Main-belt Asteroid          SPK-ID: 2192287
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1632130437338977 5.2375e-08  
a 2.345559690903662 1.3483e-08 au
q 1.962733754491735 1.2005e-07 au
i 5.102908639125747 5.9908e-06 deg
node 351.2121342734638 5.6969e-05 deg
peri 176.1963867361174 5.9134e-05 deg
M 30.43159616357894 1.6692e-05 deg
tp 2459089.584972170079
(2020-Aug-28.08497217)
6.044e-05 TDB
period 1312.103703142586
3.59
1.1313e-05
3.097e-08
d
yr
n .2743685572548673 2.3657e-09 deg/d
Q 2.728385627315588 1.5683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      14215 days (38.92 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54831  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:15:28  

Additional Information
 Earth MOID = .969161 au 
 Jupiter MOID = 2.24286 au 
 T_jup = 3.538 
[ 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 16.8   n/a MPO413016  
diameter diameter 2.436 km 0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

192287 (1981 EL22)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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