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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 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
(2019-Apr-21.04220886)
7.5645e-05 TDB
period 1588.862874491541
4.35
1.082e-05
2.962e-08
d
yr
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457137.5 (2015-Apr-25.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334645994294014 3.5815e-08  
q 2.310184388877268 9.3683e-08 au
tp 2457006.206436826973
(2014-Dec-14.70643683)
7.4481e-05 TDB
node 133.7690829721293 1.6773e-05 deg
peri 116.6868587969864 2.3232e-05 deg
i 14.2445610653581 4.0649e-06 deg
  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
 Jupiter MOID = 2.19238 au 
 T_jup = 3.327 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.282698429201598E-15 -3.335157422392691E-15 1.098618365257394E-14 -1.614563206528228E-15 -1.057848838639674E-14 1.971688843636402E-15
q -3.335157422392691E-15 8.776416981499916E-15 3.043121889867395E-14 6.120057225412482E-15 3.953081636488104E-14 -5.083789366146844E-15
tp 1.098618365257394E-14 3.043121889867395E-14 5.547349776492072E-9 -7.487051790184088E-12 1.219190863913435E-9 -3.206067965507034E-12
node -1.614563206528228E-15 6.120057225412482E-15 -7.487051790184088E-12 2.813189417888449E-10 -2.737049525416882E-10 8.393569611468704E-12
peri -1.057848838639674E-14 3.953081636488104E-14 1.219190863913435E-9 -2.737049525416882E-10 5.397477349895393E-10 -8.799031246493515E-12
i 1.971688843636402E-15 -5.083789366146844E-15 -3.206067965507034E-12 8.393569611468704E-12 -8.799031246493515E-12 1.652377132013095E-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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
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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