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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1341642873465314 3.5222e-08  
a 2.664834637356389 1.1791e-08 au
q 2.307308997339117 9.1641e-08 au
i 14.25151441777002 3.6483e-06 deg
node 133.7172166561985 1.6746e-05 deg
peri 116.3188253954807 2.2745e-05 deg
M 137.32208281047 1.7158e-05 deg
tp 2458594.403599280100
(2019-Apr-20.90359928)
7.4501e-05 TDB
period 1588.926557138762
4.35
1.0546e-05
2.887e-08
d
yr
n .2265680552588064 1.5037e-09 deg/d
Q 3.022360277373661 1.3373e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2225  
   data-arc span      14800 days (40.52 yr)  
   first obs. used      1980-07-12  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42201  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:50:51  

Additional Information
 Earth MOID = 1.32971 au 
 Jupiter MOID = 2.19156 au 
 T_jup = 3.327 
[ 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 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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