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4164 Shilov (1969 UR)
Classification: Main-belt Asteroid          SPK-ID: 2004164
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1506788679109023 3.8698e-08  
a 2.635387632089836 1.0712e-08 au
q 2.238290407180146 1.0209e-07 au
i 12.80888805594034 5.2112e-06 deg
node 218.0673054865582 1.5359e-05 deg
peri 221.2183771037256 2.1469e-05 deg
M 269.1941411946754 1.4551e-05 deg
tp 2459394.663632342117
(2021-Jun-29.16363234)
6.3562e-05 TDB
period 1562.662470351983
4.28
9.5274e-06
2.608e-08
d
yr
n .2303760452626162 1.4046e-09 deg/d
Q 3.032484856999526 1.2326e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2191  
   data-arc span      18507 days (50.67 yr)  
   first obs. used      1969-10-16  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42073  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:06:06  

Additional Information
 Earth MOID = 1.2686 au 
 Jupiter MOID = 2.32996 au 
 T_jup = 3.346 
[ 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 12.2   n/a MPO448955  
diameter diameter 10.486 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.5 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Angeli, C.A.; Barucci, M.A. (1996) Planet. Space Sci. 44, 181-186.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 12-19.]
geometric albedo albedo 0.234   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4164 Shilov (1969 UR)          Discovered 1969-Oct-16 by Chernykh, L. I. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1969 UR = 1982 VA13 = 1984 FQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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