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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345858833863983 3.9077e-08  
a 2.666498022854329 1.3365e-08 au
q 2.307625030900395 1.0483e-07 au
i 14.24521264761461 5.0188e-06 deg
node 133.7306932922944 1.732e-05 deg
peri 116.6025180939773 2.5222e-05 deg
M 1.128895754428507 1.8354e-05 deg
tp 2458595.512743961474
(2019-Apr-22.01274396)
8.1084e-05 TDB
period 1590.414497375933
4.35
1.1957e-05
3.274e-08
d
yr
n .2263560855324027 1.7018e-09 deg/d
Q 3.025371014808264 1.5163e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      14309 days (39.18 yr)  
   first obs. used      1980-07-12  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46958  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:31:08  

Additional Information
 Earth MOID = 1.33099 au 
 Jupiter MOID = 2.19031 au 
 T_jup = 3.326 
[ 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

[ show close-approach data ]
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 2020-Jan-20 15:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin