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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216786529024559 3.3784e-08  
a 2.619409691821836 1.2518e-08 au
q 2.300683449121318 8.9349e-08 au
i 12.85256170530312 4.2601e-06 deg
node 175.1420292010065 1.731e-05 deg
peri 77.69838002785364 2.4759e-05 deg
M 7.828140131457895 1.8589e-05 deg
tp 2458966.828717182740
(2020-Apr-27.32871718)
7.9905e-05 TDB
period 1548.472767560948
4.24
1.11e-05
3.039e-08
d
yr
n .2324871367076402 1.6665e-09 deg/d
Q 2.938135934522355 1.4041e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      15802 days (43.26 yr)  
   first obs. used      1977-03-12  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:47:38  

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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