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21089 Mochizuki (1992 CQ)
Classification: Main-belt Asteroid          SPK-ID: 2021089
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .134296751488572 3.9035e-08  
a 2.664763439293077 1.3299e-08 au
q 2.306894365910502 1.0446e-07 au
i 14.25151903892252 4.997e-06 deg
node 133.7171330968311 1.7262e-05 deg
peri 116.3302066094687 2.515e-05 deg
M 91.98075916801038 1.829e-05 deg
tp 2458594.542183811554
(2019-Apr-21.04218381)
8.0493e-05 TDB
period 1588.862879038594
4.35
1.1894e-05
3.256e-08
d
yr
n .2265771356039438 1.6962e-09 deg/d
Q 3.022632512675651 1.5085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1690  
   data-arc span      14363 days (39.32 yr)  
   first obs. used      1980-07-12  
   last obs. used      2019-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46582  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:18:25  

Additional Information
 Earth MOID = 1.33092 au 
 Jupiter MOID = 2.19238 au 
 T_jup = 3.327 
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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 MPO347686  
diameter diameter 7.671 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.166   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

21089 Mochizuki           Discovered 1992 Feb. 8 by T. Seki at Geisei.
Seiji Mochizuki (b. 1942) was born in Tokyo and worked for an optical company from 1967 to 1979. The 0.6-m reflector at Geisei observatory was designed by him. Even now it is still used for astronomical observation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

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Alternate Designations
 1992 CQ = 1992 CF4 = 2000 AL173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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