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26433 Michaelyurko (1999 XK215)
Classification: Main-belt Asteroid          SPK-ID: 2026433
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118778963532045 3.1023e-08  
a 2.263936766998214 6.3538e-09 au
q 1.995028704312078 7.0462e-08 au
i 6.692503962307649 3.6197e-06 deg
node 220.7569998723758 2.6474e-05 deg
peri 45.37339882722154 3.0023e-05 deg
M 258.8727709166634 1.4222e-05 deg
tp 2459550.010697370772
(2021-Dec-01.51069737)
4.9323e-05 TDB
period 1244.213375507298
3.41
5.2379e-06
1.434e-08
d
yr
n .2893394389472936 1.2181e-09 deg/d
Q 2.532844829684351 7.1085e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1862  
   data-arc span      9758 days (26.72 yr)  
   first obs. used      1994-05-02  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47916  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:19:27  

Additional Information
 Earth MOID = .98438 au 
 Jupiter MOID = 2.52702 au 
 T_jup = 3.599 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456993.5 (2014-Dec-02.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189146570444863 3.0943e-08  
q 1.994385584183754 7.0297e-08 au
tp 2457062.263856153465
(2015-Feb-08.76385615)
4.91e-05 TDB
node 220.7825799724165 2.6475e-05 deg
peri 45.49585837039073 3.0036e-05 deg
i 6.692195544843171 3.62e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1862  
   data-arc span      9758 days (26.72 yr)  
   first obs. used      1994-05-02  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47916  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:19:27  

Additional Information
 Jupiter MOID = 2.52702 au 
 T_jup = 3.599 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.574902883155136E-16 -2.168371077584055E-15 -2.541323767906245E-13 4.672595463645907E-15 -9.053981930787724E-14 -7.003886635814847E-16
q -2.168371077584055E-15 4.941685440018473E-15 5.517747949830689E-13 -1.088107227540121E-14 1.974742428217812E-13 1.743773034894486E-15
tp -2.541323767906245E-13 5.517747949830689E-13 2.410838216679498E-9 -4.50754685354708E-12 7.039843215409081E-10 -2.856767243278121E-13
node 4.672595463645907E-15 -1.088107227540121E-14 -4.50754685354708E-12 7.00936894820363E-10 -6.970242631336694E-10 6.774570197618459E-12
peri -9.053981930787724E-14 1.974742428217812E-13 7.039843215409081E-10 -6.970242631336694E-10 9.021612552366819E-10 -6.774430849376941E-12
i -7.003886635814847E-16 1.743773034894486E-15 -2.856767243278121E-13 6.774570197618459E-12 -6.774430849376941E-12 1.310439438154627E-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 14.63   n/a E2021B10  
diameter diameter 2.636 km 0.355 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.933 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.335   0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26433 Michaelyurko           Discovered 1999 Dec. 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Michael Christopher Yurko (b. 1993) was awarded second place in the 2010 Intel International Science and Engineering Fair for his computer-science project. He attends the Detroit Catholic Central High School, Novi, Michigan, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110319/MPCPages.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 1999 XK215 = 1997 EW16 = 1998 QU88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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