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15669 Pshenichner (1974 ST1)
Classification: Main-belt Asteroid          SPK-ID: 2015669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2060403344961353 3.4917e-08  
a 2.426965112386655 1.1651e-08 au
q 1.926912408820058 8.5676e-08 au
i 2.77138653948638 4.6616e-06 deg
node 356.4645572435055 8.7161e-05 deg
peri 329.3765478831625 8.8061e-05 deg
M 50.53821849424778 1.4987e-05 deg
tp 2458806.629756899512
(2019-Nov-19.12975690)
5.6851e-05 TDB
period 1381.000153856225
3.78
9.9446e-06
2.723e-08
d
yr
n .2606806371416808 1.8772e-09 deg/d
Q 2.927017815953251 1.4052e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1234  
   data-arc span      23717 days (64.93 yr)  
   first obs. used      1955-08-25  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53242  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:01:20  

Additional Information
 Earth MOID = .915824 au 
 Jupiter MOID = 2.41356 au 
 T_jup = 3.479 
[ 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 14.5   n/a MPO435845  
diameter diameter 3.296 km 0.695 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.178   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15669 Pshenichner           Discovered 1974 Sept. 19 by L. I. Chernykh at the Crimean Astrophysical Observatory.
Boris Grigor'evich Pshenichner (b. 1933) dealt with space education for 50 years. Since 1958 he worked in the Moscow planetarium, and since 1962 in the Moscow palace for children's creativity. A member of the Russian space academy , he is head of the Moscow scientific-educational program "Experiment in Space".
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081212/MPCPages.arcLast Updated: 2008-12-12

Alternate Designations
 1974 ST1 = 1993 TX20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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