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4139 Ul'yanin (1975 VE2)
Classification: Main-belt Asteroid          SPK-ID: 2004139
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .165187643624205 2.2298e-08  
a 3.145024602107394 1.2463e-08 au
q 2.62550539894512 7.0801e-08 au
i 1.591984449068933 7.2056e-07 deg
node 134.0673949972269 3.4577e-05 deg
peri 181.0167149060166 3.439e-05 deg
M 89.70551095685279 5.2363e-06 deg
tp 2458692.865510620918
(2019-Jul-28.36551062)
2.8178e-05 TDB
period 2037.203893352429
5.58
1.2109e-05
3.315e-08
d
yr
n .1767127979554285 1.0504e-09 deg/d
Q 3.664543805269667 1.4522e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3081  
   data-arc span      16568 days (45.36 yr)  
   first obs. used      1975-11-02  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43267  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:59:36  

Additional Information
 Earth MOID = 1.60978 au 
 Jupiter MOID = 1.62779 au 
 T_jup = 3.187 
[ 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 12.36   n/a MPCxxxxx  
diameter diameter 12.707 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.158   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4139 Ul'yanin           Discovered 1975 Nov. 2 by T. M. Smirnova at the Crimean Astrophysical Observatory.
Named in memory of Sergej Alekseevich Ul'yanin (1871-1921), Russian pilot and talented inventor, who graduated from the Farman pilot school in France in 1910. Two of his projects involved the design of new airplines, one of which was realized. He also designed a radio navigation system for airplanes in flight, as well as apparatus for air photography.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19961026/MPCPages.arcLast Updated: 2003-09-26

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Alternate Designations
 1975 VE2 = 1975 WX1 = 1979 HK3 = 1981 UR7 = 1986 TF17 = 1989 AK7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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