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3381 Mikkola (1941 UG)
Classification: Main-belt Asteroid          SPK-ID: 2003381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2067110442058257 3.5967e-08  
a 2.452614142639522 8.1237e-09 au
q 1.945631712180531 8.8273e-08 au
i 4.215035442164339 2.9089e-06 deg
node 257.7894396553192 5.7714e-05 deg
peri 134.9021257711705 5.8229e-05 deg
M 146.0968595453346 8.1163e-06 deg
tp 2458431.148264224404
(2018-Nov-08.64826422)
3.1235e-05 TDB
period 1402.950244906616
3.84
6.9704e-06
1.908e-08
d
yr
n .2566021149409776 1.2749e-09 deg/d
Q 2.959596573098514 9.8029e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2672  
   data-arc span      28777 days (78.79 yr)  
   first obs. used      1941-09-26  
   last obs. used      2020-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44559  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:47  

Additional Information
 Earth MOID = .954691 au 
 Jupiter MOID = 2.48691 au 
 T_jup = 3.461 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456935.5 (2014-Oct-05.0) TDB
Reference: JPL 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049032819992347 3.5842e-08  
q 1.950999738863842 8.7835e-08 au
tp 2457025.593434275037
(2015-Jan-03.09343428)
3.1983e-05 TDB
node 258.0004017290205 5.7802e-05 deg
peri 134.4209803726327 5.8332e-05 deg
i 4.209912801308996 2.9046e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2672  
   data-arc span      28777 days (78.79 yr)  
   first obs. used      1941-09-26  
   last obs. used      2020-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44559  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:47  

Additional Information
 Jupiter MOID = 2.48691 au 
 T_jup = 3.461 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.284621794651438E-15 -3.139664478886208E-15 -4.915617269197358E-13 -8.511534061391985E-16 -1.404081702267522E-13 -7.634420324104613E-16
q -3.139664478886208E-15 7.714948050083709E-15 1.179419031784097E-12 3.358536703519055E-15 3.355136026904249E-13 1.894313174591733E-15
tp -4.915617269197358E-13 1.179419031784097E-12 1.022928298611481E-9 1.349753974542907E-12 2.751163983466114E-10 3.378643810429641E-13
node -8.511534061391985E-16 3.358536703519055E-15 1.349753974542907E-12 3.341044560096909E-9 -3.331414600924495E-9 -2.487089556297437E-11
peri -1.404081702267522E-13 3.355136026904249E-13 2.751163983466114E-10 -3.331414600924495E-9 3.402597724545649E-9 2.490618833736077E-11
i -7.634420324104613E-16 1.894313174591733E-15 3.378643810429641E-13 -2.487089556297437E-11 2.490618833736077E-11 8.436824487553524E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a PDS3 (MPC 17268)  
diameter diameter 3.810 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.639   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3381 Mikkola (1941 UG)          Discovered 1941-Oct-15 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1941 UG = 1949 XG = 1974 HG = 1977 BE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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