Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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

[ hide close-approach data ]
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 38 CATAB v2.0f-lin.ifort 2021-Feb-24 02:50:55 2021-Feb-24 02:50
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 38 CATAB v2.0f-lin.ifort 2021-Feb-24 02:50:55 2021-Feb-24 02:50

Alternate Designations
 1992 CQ = 1992 CF4 = 2000 AL173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-26 10:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin