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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342967663619801 3.5814e-08  
a 2.664763434209013 1.2097e-08 au
q 2.306894321875097 9.371e-08 au
i 14.25151696158706 4.0666e-06 deg
node 133.7171353293611 1.6763e-05 deg
peri 116.3302125815913 2.3148e-05 deg
M 91.98075375616101 1.7296e-05 deg
tp 2458594.542208858576
7.5645e-05 TDB
period 1588.862874491541
n .2265771362523687 1.5429e-09 deg/d
Q 3.022632546542928 1.3722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2005  
   data-arc span      14717 days (40.29 yr)  
   first obs. used      1980-07-12  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43717  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:58:59  

Additional Information
 Earth MOID = 1.33092 au 
 Jupiter MOID = 2.19238 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] (  
geometric albedo albedo 0.166   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2050-Apr-01 18:55 < 00:01 Iris 0.0334111602690939 0.0334036163302953 0.0334187042960589 8.62672053512293 8.62672051517785 2469898.287881975 0.806442233967011 385.876163009468 42.6627569809008 -12.977311357275 29175.0053597485 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 01:59:05 2020-Nov-13 01:59
2137-Aug-12 15:54 00:02 Amphi 0.0466828788234113 0.0466663960745197 0.0466993662432246 7.43032920764924 7.43032919107601 2501807.162729879 2.2605417619872 1103.96225309162 36.9194241107641 41.9100927310998 126417.904595883 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 01:59:05 2020-Nov-13 01:59

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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