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2188 Orlenok (1976 UL4)
Classification: Main-belt Asteroid          SPK-ID: 2002188
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08739856873958561 4.0223e-08  
a 2.901414822149274 1.4256e-08 au
q 2.647835319373609 1.1763e-07 au
i 2.662026484264541 4.2842e-06 deg
node 140.2842502784904 9.1649e-05 deg
peri 194.0719039631818 9.4562e-05 deg
M 6.760240715537845 2.3564e-05 deg
tp 2458966.602097632306
(2020-Apr-27.10209763)
0.00011812 TDB
period 1805.149456338372
4.94
1.3304e-05
3.642e-08
d
yr
n .1994294703609952 1.4698e-09 deg/d
Q 3.15499432492494 1.5502e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2365  
   data-arc span      32383 days (88.66 yr)  
   first obs. used      1931-10-07  
   last obs. used      2020-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50337  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:42:02  

Additional Information
 Earth MOID = 1.63776 au 
 Jupiter MOID = 2.14781 au 
 T_jup = 3.280 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7   n/a MPO492776  
diameter diameter 13.738 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.192   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2188 Orlenok           Discovered 1976 Oct. 28 by L. V. Zhuravleva at the Crimean Astrophysical Observatory.
Named on the occasion of the 20th anniversary of the all-Union pioneer camp in the Tuapse region. An orlenok, or an eaglet, is the symbol of the young revolutionary.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5849Last Updated: 2006-03-21

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Alternate Designations
 1976 UL4 = 1931 TF4 = 1950 ND = 1963 DE = 1969 HB = 1979 HU = A909 EA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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