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18903 Matsuura (2000 ND29)
Classification: Main-belt Asteroid          SPK-ID: 2018903
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1988777891495577 3.2423e-08  
a 2.558011406941575 1.1587e-08 au
q 2.049279753709685 8.2568e-08 au
i 9.321201446055177 3.6491e-06 deg
node 164.6044085947593 2.3279e-05 deg
peri 149.2163158910779 2.5693e-05 deg
M 296.6844769417121 1.3268e-05 deg
tp 2459263.320864981613
(2021-Feb-17.82086498)
5.567e-05 TDB
period 1494.349360523774
4.09
1.0154e-05
2.78e-08
d
yr
n .2409075210323099 1.6369e-09 deg/d
Q 3.066743060173465 1.3892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2001  
   data-arc span      14362 days (39.32 yr)  
   first obs. used      1980-10-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:36:56  

Additional Information
 Earth MOID = 1.04213 au 
 Jupiter MOID = 2.27701 au 
 T_jup = 3.390 
[ 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 13.3   n/a MPO384916  
diameter diameter 5.711 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.259   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18903 Matsuura           Discovered 2000 July 10 by K. Watanabe at Sapporo.
The geographer and explorer Takeshirou Matsuura (1818-1888) traveled throughout the Ezo under the order of the Edo-shogunate. He showed understanding to and sympathy with the native Ainus. He renamed Ezo as Hokkaido and introduced names for many places on the island.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2000 ND29 = 1980 TD11 = 1988 SP3 = 1992 QO2 = 1996 TW37 = 1999 FR45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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