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3165 Mikawa (1984 QE)
Classification: Main-belt Asteroid          SPK-ID: 2003165
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1790894062144041 3.046e-08  
a 2.244118200963243 6.077e-09 au
q 1.842220404877799 6.8331e-08 au
i 3.92222858072987 3.1966e-06 deg
node 88.64402479252696 5.0853e-05 deg
peri 239.68278951 5.212e-05 deg
M 235.1303014627117 1.3682e-05 deg
tp 2459426.413672172423
(2021-Jul-30.91367217)
4.7553e-05 TDB
period 1227.91136503213
3.36
4.9877e-06
1.366e-08
d
yr
n .2931807704138157 1.1909e-09 deg/d
Q 2.646015997048687 7.1653e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2753  
   data-arc span      24578 days (67.29 yr)  
   first obs. used      1953-04-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4426  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:00:43  

Additional Information
 Earth MOID = .834539 au 
 Jupiter MOID = 2.68957 au 
 T_jup = 3.608 
[ 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 12.9   n/a MPO502183  
diameter diameter 7.715 km 0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.08 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:
[Ellsworth, N.; Hughes, S.; Ditteon, R. (2002) Minor Planet Bull. 29, 68.]
[Hawkins, S.; Ditteon, R. (2008) Minor Planet Bull. 35, 1-4.]
[Polakis, T.; Skiff, B. (2019) Minor Planet Bull. 46, 132-137.]
geometric albedo albedo 0.227   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3165 Mikawa (1984 QE)          Discovered 1984-Aug-31 by Suzuki, K. and Urata, T. at JCPM Oi Station
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1984 QE = 1953 GP = 1973 FU = 1974 QE2 = 1981 WB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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