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19942 (1981 EV24)
Classification: Main-belt Asteroid          SPK-ID: 2019942
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .130500153666558 3.0537e-08  
a 2.570563747690536 1.2104e-08 au
q 2.235104783607238 8.2184e-08 au
i 3.175992879571679 7.5386e-06 deg
node 357.728966715876 5.4933e-05 deg
peri 102.991152228706 6.3511e-05 deg
M 292.544890925373 3.1403e-05 deg
tp 2459482.567690501518
(2021-Sep-25.06769050)
0.00013187 TDB
period 1505.362158234833
4.12
1.0633e-05
2.911e-08
d
yr
n .2391451107168331 1.6892e-09 deg/d
Q 2.906022711773834 1.3684e-08 au
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      15055 days (41.22 yr)  
   first obs. used      1979-10-18  
   last obs. used      2021-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55145  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:45:28  

Additional Information
 Earth MOID = 1.25437 au 
 Jupiter MOID = 2.23016 au 
 T_jup = 3.416 
[ 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 15.39   n/a E2021B10  
diameter diameter 4.986 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19942 (1981 EV24)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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