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19932 (1981 EU4)
Classification: Main-belt Asteroid          SPK-ID: 2019932
[ 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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07226351216567889 2.3442e-08  
a 2.984884544070233 1.5288e-08 au
q 2.769186303506667 6.7832e-08 au
i 9.019235285239397 1.508e-06 deg
node 261.086155598696 5.6207e-06 deg
peri 26.44538182597835 1.9582e-05 deg
M 156.1226676353851 2.2948e-05 deg
tp 2458383.629532376734
(2018-Sep-22.12953238)		 0.00011706 TDB
period 1883.604557867062
5.16		 1.4471e-05
3.962e-08		 d
yr
n .1911229182879305 1.4683e-09 deg/d
Q 3.2005827846338 1.6392e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2242  
   data-arc span      14643 days (40.09 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46247  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:09:28  

Additional Information
 Earth MOID = 1.75415 au 
 Jupiter MOID = 1.91724 au 
 T_jup = 3.235 
[ 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 12.56   n/a E2021B10  
diameter diameter 10.791 km 0.327 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.182   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19932 (1981 EU4)          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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