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 ]  
20962 Michizane (1977 EW7)
Classification: Main-belt Asteroid          SPK-ID: 2020962
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1212775193523252 3.4171e-08  
a 2.618541542851079 1.4549e-08 au
q 2.300971320213089 9.0874e-08 au
i 12.85317840747399 4.529e-06 deg
node 175.1536701648428 1.7447e-05 deg
peri 77.66520429650829 2.635e-05 deg
M 274.8013343162212 2.1425e-05 deg
tp 2458966.783977709613
(2020-Apr-27.28397771)
9.3191e-05 TDB
period 1547.703017613881
4.24
1.2899e-05
3.532e-08
d
yr
n .2326027641627383 1.9386e-09 deg/d
Q 2.936111765489068 1.6314e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1385  
   data-arc span      15397 days (42.15 yr)  
   first obs. used      1977-03-12  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54012  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:57:10  

Additional Information
 Earth MOID = 1.32875 au 
 Jupiter MOID = 2.16682 au 
 T_jup = 3.360 
[ 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 14.0   n/a MPO435894  
diameter diameter 4.538 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.179   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20962 Michizane           Discovered 1977 Mar. 12 by H. Kosai and K. Hurukawa at Kiso.
Sugawara no Michizane (845-903) was a noble, a scholar, a politician and a Kanshi poet. He is admired for his calligraphy, scholarship and poetry.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-11-04Last Updated: 2017-11-07

[ show close-approach data ]
Alternate Designations
 1977 EW7 = 1991 RT31 = 1999 NG60 = 2000 SZ225 
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-19 17:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin