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22686 Mishchenko (1998 QL53)
Classification: Main-belt Asteroid          SPK-ID: 2022686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1006615113648119 3.5145e-08  
a 2.621937688568202 9.7355e-09 au
q 2.358009478132566 9.1937e-08 au
i 13.77470560107575 3.713e-06 deg
node 199.6296400152077 1.3164e-05 deg
peri 33.30833653917244 2.015e-05 deg
M 212.1403263891002 1.6411e-05 deg
tp 2459837.411688009641
(2022-Sep-14.91168801)
7.2138e-05 TDB
period 1550.714958879552
4.25
8.6369e-06
2.365e-08
d
yr
n .2321509816737133 1.293e-09 deg/d
Q 2.885865899003839 1.0716e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2060  
   data-arc span      9482 days (25.96 yr)  
   first obs. used      1995-02-02  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:59:01  

Additional Information
 Earth MOID = 1.35934 au 
 Jupiter MOID = 2.10385 au 
 T_jup = 3.356 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457266.5 (2015-Sep-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1007016575444655 3.5111e-08  
q 2.357970170441813 9.1833e-08 au
tp 2456738.889924736057
(2014-Mar-22.38992474)
6.6697e-05 TDB
node 199.6540413680397 1.3152e-05 deg
peri 33.86744268067671 2.0151e-05 deg
i 13.78027581020548 3.7144e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2060  
   data-arc span      9482 days (25.96 yr)  
   first obs. used      1995-02-02  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:59:01  

Additional Information
 Jupiter MOID = 2.10385 au 
 T_jup = 3.356 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.232772291282859E-15 -3.209675902353895E-15 1.951047825680415E-15 3.473939820135058E-15 -2.69874356580746E-14 -2.095198500611656E-16
q -3.209675902353895E-15 8.433348232682883E-15 1.070233176600285E-13 -1.027156015209008E-14 1.014685836493478E-13 9.708060880021169E-16
tp 1.951047825680415E-15 1.070233176600285E-13 4.448535951142374E-9 -9.160138343192137E-13 1.025879621839084E-9 9.42804400107059E-13
node 3.473939820135058E-15 -1.027156015209008E-14 -9.160138343192137E-13 1.729739961962459E-10 -1.681673659148469E-10 9.931049644238727E-12
peri -2.69874356580746E-14 1.014685836493478E-13 1.025879621839084E-9 -1.681673659148469E-10 4.060713105125699E-10 -9.394664129830135E-12
i -2.095198500611656E-16 9.708060880021169E-16 9.42804400107059E-13 9.931049644238727E-12 -9.394664129830135E-12 1.379706329735654E-11

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 13.69   n/a E2021B10  
diameter diameter 4.620 km 0.205 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.361   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22686 Mishchenko           Discovered 1998 Aug. 20 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Michael Ivanovich Mischenko (b. 1959), of the NASA Goddard Institute for Space Studies, studies electromagnetic scattering. He has developed a new branch of statistical optics based on numerically exact solutions of Maxwell's equations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

[ show close-approach data ]
Alternate Designations
 1998 QL53 = 2000 AD168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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