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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 ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133969107529847 1.9565e-08  
a 2.665276162811082 1.1494e-08 au
q 2.308211493958706 5.0757e-08 au
i 14.25152110676719 9.964e-07 deg
node 133.716558701285 2.7216e-06 deg
peri 116.3235612708526 8.3838e-06 deg
M 181.726136790025 8.4732e-06 deg
tp 2460183.540216382622
(2023-Aug-27.04021638)
4.0416e-05 TDB
period 1589.321467522283
4.35
1.0281e-05
2.815e-08
d
yr
n .2265117582292726 1.4652e-09 deg/d
Q 3.022340831663458 1.3034e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2303  
   data-arc span      14861 days (40.69 yr)  
   first obs. used      1980-07-12  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:30:24  

Additional Information
 Earth MOID = 1.33223 au 
 Jupiter MOID = 2.19042 au 
 T_jup = 3.327 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457437.5 (2016-Feb-19.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336233783279922 1.9532e-08  
q 2.309927447880739 5.0655e-08 au
tp 2457006.259845161133
(2014-Dec-14.75984516)
3.1884e-05 TDB
node 133.7681138188344 2.723e-06 deg
peri 116.6900968020495 8.4174e-06 deg
i 14.24390313243158 9.9553e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2303  
   data-arc span      14861 days (40.69 yr)  
   first obs. used      1980-07-12  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:30:24  

Additional Information
 Jupiter MOID = 2.19042 au 
 T_jup = 3.327 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.815158727905938E-16 -9.709107865549889E-16 6.307235747897294E-14 1.462427029834966E-14 -3.098169429968403E-14 -1.29914694910446E-14
q -9.709107865549889E-16 2.565972332858919E-15 -1.229223699237955E-13 -3.802654436598225E-14 9.268812892734872E-14 3.395121836454388E-14
tp 6.307235747897294E-14 -1.229223699237955E-13 1.016601508259428E-9 1.161502046795042E-11 2.447950268455426E-10 -1.124892819039892E-11
node 1.462427029834966E-14 -3.802654436598225E-14 1.161502046795042E-11 7.414676964262904E-12 -5.081172437382006E-12 -9.33522136888233E-13
peri -3.098169429968403E-14 9.268812892734872E-14 2.447950268455426E-10 -5.081172437382006E-12 7.085292612686844E-11 -7.963468082911704E-13
i -1.29914694910446E-14 3.395121836454388E-14 -1.124892819039892E-11 -9.33522136888233E-13 -7.963468082911704E-13 9.910764046703193E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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

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