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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1119344101957152 5.0749e-08  
a 2.576893483173279 1.6114e-08 au
q 2.288450430997096 1.3172e-07 au
i 10.22968366852746 7.7072e-06 deg
node 230.6480562289532 3.9169e-05 deg
peri 206.665886688721 6.377e-05 deg
M 260.1549735775837 4.8025e-05 deg
tp 2459419.551175402521
(2021-Jul-24.05117540)		 0.00020203 TDB
period 1510.925767165087
4.14		 1.4172e-05
3.88e-08		 d
yr
n .238264518233387 2.2349e-09 deg/d
Q 2.865336535349462 1.7918e-08 au
   Orbit Determination Parameters
   # obs. used (total)      711  
   data-arc span      13618 days (37.28 yr)  
   first obs. used      1981-02-02  
   last obs. used      2018-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59003  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 17:52:40  

Additional Information
 Earth MOID = 1.30774 au 
 Jupiter MOID = 2.42455 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 14.9   n/a MPO395186  
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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