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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216786533804588 3.3986e-08  
a 2.619409690712333 1.3213e-08 au
q 2.300683446894733 9.0342e-08 au
i 12.85256095436525 4.4064e-06 deg
node 175.1420293637565 1.7313e-05 deg
peri 77.698378363584 2.5497e-05 deg
M 7.828142149022706 2.0248e-05 deg
tp 2458966.828708525955
(2020-Apr-27.32870853)
8.7011e-05 TDB
period 1548.472766577118
4.24
1.1717e-05
3.208e-08
d
yr
n .232487136855352 1.7591e-09 deg/d
Q 2.938135934529934 1.4821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1448  
   data-arc span      15752 days (43.13 yr)  
   first obs. used      1977-03-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5376  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:17:52  

Additional Information
 Earth MOID = 1.32866 au 
 Jupiter MOID = 2.16465 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 ]
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