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19166 (1991 EY1)
Classification: Main-belt Asteroid          SPK-ID: 2019166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1388459814660622 3.3361e-08  
a 2.311694268769401 8.8428e-09 au
q 1.990724809172642 7.8538e-08 au
i 5.052064178902389 4.5301e-06 deg
node 318.1237062842909 3.8645e-05 deg
peri 246.1097859833182 4.1957e-05 deg
M 75.68798009122361 1.6064e-05 deg
tp 2458730.590335249604
(2019-Sep-04.09033525)
5.7183e-05 TDB
period 1283.790097093758
3.51
7.3662e-06
2.017e-08
d
yr
n .2804196736016015 1.609e-09 deg/d
Q 2.632663728366159 1.0071e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1595  
   data-arc span      10306 days (28.22 yr)  
   first obs. used      1991-02-22  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47105  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:40:46  

Additional Information
 Earth MOID = .993782 au 
 Jupiter MOID = 2.35261 au 
 T_jup = 3.566 
[ 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 14.7   n/a MPO365482  
diameter diameter 2.908 km 0.444 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19166 (1991 EY1)          Discovered 1991-Mar-07 by Debehogne, H. at La Silla
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 EY1 = 1991 DJ2 = 1998 BA25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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