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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08724878736837538 1.4733e-08  
a 2.901103819511111 1.1772e-08 au
q 2.647986029229004 4.1231e-08 au
i 2.662080604866842 8.1497e-07 deg
node 140.285477172469 1.4533e-05 deg
peri 194.1268343188067 1.9958e-05 deg
M 46.60928980177295 1.2962e-05 deg
tp 2458966.824426154354
(2020-Apr-27.32442615)
6.4982e-05 TDB
period 1804.859223176418
4.94
1.0985e-05
3.008e-08
d
yr
n .1994615399235553 1.214e-09 deg/d
Q 3.154221609793217 1.2799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2894  
   data-arc span      32671 days (89.45 yr)  
   first obs. used      1931-10-07  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45954  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:02:38  

Additional Information
 Earth MOID = 1.63601 au 
 Jupiter MOID = 2.14784 au 
 T_jup = 3.280 
[ 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 11.78   n/a MPCxxxxx  
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

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 ]
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