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19099 (1981 EC4)
Classification: Main-belt Asteroid          SPK-ID: 2019099
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120212846243404 4.0568e-08  
a 2.576130163997298 1.2854e-08 au
q 2.287548753666808 1.1105e-07 au
i 10.230423208667 4.349e-06 deg
node 230.6381970336821 2.4676e-05 deg
peri 206.8361145029686 3.6604e-05 deg
M 307.671105913063 2.9743e-05 deg
tp 2459420.027628995285
(2021-Jul-24.52762900)		 0.0001257 TDB
period 1510.254474459286
4.13		 1.1304e-05
3.095e-08		 d
yr
n .2383704243808914 1.7841e-09 deg/d
Q 2.864711574327788 1.4294e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1151  
   data-arc span      14619 days (40.02 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:45:42  

Additional Information
 Earth MOID = 1.30641 au 
 Jupiter MOID = 2.42506 au 
 T_jup = 3.396 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.93   n/a E2021B10  
diameter diameter 6.458 km 0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19099 (1981 EC4)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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