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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2068435684440297 1.849e-08  
a 2.452320703767341 7.914e-09 au
q 1.945073938430929 4.4531e-08 au
i 4.215205242976186 6.8556e-07 deg
node 257.7860183395801 1.8766e-05 deg
peri 134.8796382706612 2.1806e-05 deg
M 197.4578446742856 5.1765e-06 deg
tp 2459833.826758096330
(2022-Sep-11.32675810)		 2.1862e-05 TDB
period 1402.69847202284
3.84		 6.7901e-06
1.859e-08		 d
yr
n .2566481729183335 1.2424e-09 deg/d
Q 2.959567469103752 9.551e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2704  
   data-arc span      28998 days (79.39 yr)  
   first obs. used      1941-09-26  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:02:45  

Additional Information
 Earth MOID = .953015 au 
 Jupiter MOID = 2.48813 au 
 T_jup = 3.462 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456954.5 (2014-Oct-24.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048918186314773 1.8447e-08  
q 1.95099755600546 4.4394e-08 au
tp 2457025.597537331851
(2015-Jan-03.09753733)		 1.7971e-05 TDB
node 257.9999274682114 1.8808e-05 deg
peri 134.4229321666227 2.1902e-05 deg
i 4.209920447889057 6.8315e-07 deg
   Orbit Determination Parameters
   # obs. used (total)      2704  
   data-arc span      28998 days (79.39 yr)  
   first obs. used      1941-09-26  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:02:45  

Additional Information
 Jupiter MOID = 2.48813 au 
 T_jup = 3.462 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.402756976509208E-16 -8.109028565283298E-16 -2.820188653827859E-13 9.85739207452967E-14 -1.864224653283848E-13 -9.143056847256106E-16
q -8.109028565283298E-16 1.970793768988502E-15 6.876603358427868E-13 -2.355854669534731E-13 4.502182724012925E-13 2.152822888478051E-15
tp -2.820188653827859E-13 6.876603358427868E-13 3.229661206649657E-10 -1.559453271784172E-10 2.562290341828738E-10 1.815097746653763E-12
node 9.85739207452967E-14 -2.355854669534731E-13 -1.559453271784172E-10 3.537295398392966E-10 -4.008794115595504E-10 -5.816151983146974E-12
peri -1.864224653283848E-13 4.502182724012925E-13 2.562290341828738E-10 -4.008794115595504E-10 4.797049729189936E-10 6.468823915866277E-12
i -9.143056847256106E-16 2.152822888478051E-15 1.815097746653763E-12 -5.816151983146974E-12 6.468823915866277E-12 4.666957908452119E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.28   n/a E2021B10  
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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