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4639 Minox (1989 EK2)
Classification: Main-belt Asteroid          SPK-ID: 2004639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827225530278376 4.1698e-08  
a 2.556569114300016 1.1113e-08 au
q 2.089426278743 1.0637e-07 au
i 7.918112513361541 4.9154e-06 deg
node 33.29679330510424 2.7498e-05 deg
peri 250.6698320201899 3.0451e-05 deg
M 150.3165892943434 1.552e-05 deg
tp 2458377.067920049767
(2018-Sep-15.56792005)
6.2894e-05 TDB
period 1493.08569224255
4.09
9.7351e-06
2.665e-08
d
yr
n .2411114123391643 1.5721e-09 deg/d
Q 3.023711949857033 1.3143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2036  
   data-arc span      23778 days (65.10 yr)  
   first obs. used      1954-12-30  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46874  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:17:54  

Additional Information
 Earth MOID = 1.0894 au 
 Jupiter MOID = 2.17041 au 
 T_jup = 3.400 
[ show covariance matrix ]

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 13.1   n/a MPO502198  
diameter diameter 6.915 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.993 h n/a LCDB (Rev. 2019-August); 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 0.198   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4639 Minox (1989 EK2)          Discovered 1989-Mar-05 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1989 EK2 = 1985 HR = 1986 SV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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