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19102 (1981 EH8)
Classification: Main-belt Asteroid          SPK-ID: 2019102
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1370612746590504 5.1788e-08  
a 2.279554301928746 9.4577e-09 au
q 1.96711568365187 1.1633e-07 au
i 7.287476500597599 4.7753e-06 deg
node 322.7054122519433 3.915e-05 deg
peri 209.6298433438571 4.1779e-05 deg
M 143.3019213217488 1.4709e-05 deg
tp 2458500.093603445466
(2019-Jan-16.59360345)
5.1143e-05 TDB
period 1257.110170596796
3.44
7.8235e-06
2.142e-08
d
yr
n .2863710822012481 1.7822e-09 deg/d
Q 2.591992920205622 1.0754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      13969 days (38.25 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53533  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:40:10  

Additional Information
 Earth MOID = .976968 au 
 Jupiter MOID = 2.39575 au 
 T_jup = 3.583 
[ 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 15.4   n/a MPO267779  
diameter diameter 2.506 km 0.799 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.135   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19102 (1981 EH8)          Discovered 1981-Mar-01 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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