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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342967510395026 3.8814e-08  
a 2.664763439418156 1.3229e-08 au
q 2.306894367215448 1.0374e-07 au
i 14.25151902798327 4.9625e-06 deg
node 133.7171328060347 1.7216e-05 deg
peri 116.3302067437559 2.5034e-05 deg
M 91.98075924512258 1.824e-05 deg
tp 2458594.542183442636
(2019-Apr-21.04218344)
8.0246e-05 TDB
period 1588.862879150462
4.35
1.1832e-05
3.239e-08
d
yr
n .2265771355879911 1.6873e-09 deg/d
Q 3.022632511620865 1.5006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1728  
   data-arc span      14632 days (40.06 yr)  
   first obs. used      1980-07-12  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46193  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:41:16  

Additional Information
 Earth MOID = 1.33092 au 
 Jupiter MOID = 2.19238 au 
 T_jup = 3.327 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456630.5 (2013-Dec-04.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1331657549679575 3.8882e-08  
q 2.310742999147956 1.0377e-07 au
tp 2457006.010630580250
(2014-Dec-14.51063058)
8.1049e-05 TDB
node 133.7695723260147 1.7228e-05 deg
peri 116.6156166228395 2.5129e-05 deg
i 14.24394666182437 4.96e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1728  
   data-arc span      14632 days (40.06 yr)  
   first obs. used      1980-07-12  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46193  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:41:16  

Additional Information
 Jupiter MOID = 2.19238 au 
 T_jup = 3.327 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.511811171749099E-15 -4.010166892369802E-15 4.839565559421202E-13 -9.936893989680614E-17 1.165552017727655E-13 6.817866288678815E-16
q -4.010166892369802E-15 1.076904743989256E-14 -1.372747138062831E-12 1.753852265824585E-15 -3.384128865812453E-13 -1.599041327405418E-15
tp 4.839565559421202E-13 -1.372747138062831E-12 6.568917182243564E-9 -1.241964304000629E-11 1.500941793421485E-9 8.047612550995731E-13
node -9.936893989680614E-17 1.753852265824585E-15 -1.241964304000629E-11 2.968043631546029E-10 -2.897560603056409E-10 -2.5156112162144E-12
peri 1.165552017727655E-13 -3.384128865812453E-13 1.500941793421485E-9 -2.897560603056409E-10 6.314884794259309E-10 2.638272932584924E-12
i 6.817866288678815E-16 -1.599041327405418E-15 8.047612550995731E-13 -2.5156112162144E-12 2.638272932584924E-12 2.460179537240706E-11

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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