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15804 Yenisei (1994 EY5)
Classification: Main-belt Asteroid          SPK-ID: 2015804
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05005983308512378 3.5217e-08  
a 2.7396905264626 1.1873e-08 au
q 2.602542076002987 9.8091e-08 au
i 6.271335567832353 3.1446e-06 deg
node 116.5905778185517 3.8922e-05 deg
peri 297.5292565239242 5.4464e-05 deg
M 26.89091309654275 3.6897e-05 deg
tp 2458876.776061258847
(2020-Jan-28.27606126)
0.00016989 TDB
period 1656.34457212022
4.53
1.0767e-05
2.948e-08
d
yr
n .2173460800726859 1.4129e-09 deg/d
Q 2.876838976922213 1.2468e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1884  
   data-arc span      9722 days (26.62 yr)  
   first obs. used      1994-02-08  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50926  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:41:24  

Additional Information
 Earth MOID = 1.62158 au 
 Jupiter MOID = 2.30163 au 
 T_jup = 3.340 
[ 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 13.5   n/a MPO502290  
diameter diameter 10.198 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15804 Yenisei           Discovered 1994 Mar. 9 by E. W. Elst at Caussols.
Rising near the Mongolian border, two headstreams of the Yenisei proceed westward across Siberia and converge at Kyzyl. Then flowing generally northward, the river passes Krasnoyarsk and reaches the Kara Sea. Of its many tributaries the Podkamennaya Tunguska is known from its proximity to the 1908 impact event.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

Alternate Designations
 1994 EY5 = 1997 YC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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