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172951 Mehoke (2005 JN174)
Classification: Main-belt Asteroid          SPK-ID: 2172951
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05668100071257473 4.4956e-08  
a 2.36395210240014 1.3062e-08 au
q 2.229960931599505 1.0713e-07 au
i 5.818543050736429 5.2988e-06 deg
node 197.9630386225279 4.0094e-05 deg
peri 328.819965188349 5.66e-05 deg
M 96.45238109772842 3.9854e-05 deg
tp 2458644.813903972909
(2019-Jun-10.31390397)
0.00014659 TDB
period 1327.566962188436
3.63
1.1004e-05
3.013e-08
d
yr
n .2711727620929613 2.2476e-09 deg/d
Q 2.497943273200774 1.3803e-08 au
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      7052 days (19.31 yr)  
   first obs. used      1999-11-04  
   last obs. used      2019-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54133  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 03:57:01  

Additional Information
 Earth MOID = 1.23757 au 
 Jupiter MOID = 2.4714 au 
 T_jup = 3.540 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456954.5 (2014-Oct-24.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05725603176644478 4.4871e-08  
q 2.227494119463127 1.071e-07 au
tp 2457317.894312532795
(2015-Oct-22.39431253)
0.00014415 TDB
node 198.0220122342128 4.0115e-05 deg
peri 328.7853300729877 5.6364e-05 deg
i 5.817321069241153 5.2986e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      7052 days (19.31 yr)  
   first obs. used      1999-11-04  
   last obs. used      2019-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54133  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 03:57:01  

Additional Information
 Jupiter MOID = 2.4714 au 
 T_jup = 3.540 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.013383009836491E-15 -4.773055244994316E-15 1.438243237333034E-12 -1.359253384233129E-16 4.272999252484041E-13 -1.068870933150134E-15
q -4.773055244994316E-15 1.146954279024014E-14 -3.321766083669361E-12 4.93996032730428E-16 -1.001773600074185E-12 2.633227236998313E-15
tp 1.438243237333034E-12 -3.321766083669361E-12 2.07784917469291E-8 -1.80741266564E-11 5.716392336429678E-9 7.549338056397484E-12
node -1.359253384233129E-16 4.93996032730428E-16 -1.80741266564E-11 1.609240768213322E-9 -1.60549159394034E-9 -1.444442393977121E-12
peri 4.272999252484041E-13 -1.001773600074185E-12 5.716392336429678E-9 -1.60549159394034E-9 3.176928754690467E-9 3.48514157207311E-12
i -1.068870933150134E-15 2.633227236998313E-15 7.549338056397484E-12 -1.444442393977121E-12 3.48514157207311E-12 2.807508794003748E-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 16.7   n/a MPO427054  

172951 Mehoke           Discovered 2005 May 11 by M. W. Buie at Cerro Tololo.
Douglas S. Mehoke (b. 1956) is a thermal engineer at the Johns Hopkins University Applied Physics Laboratory, and served as a Thermal Systems Engineer for the New Horizons Mission to Pluto.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-09-25Last Updated: 2018-10-01

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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