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37623 Valmiera (1993 RN4)
Classification: Main-belt Asteroid          SPK-ID: 2037623
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 .07347041678949401 4.0496e-08  
a 3.187729995067257 1.8802e-08 au
q 2.953526143717294 1.3573e-07 au
i 22.30791993809255 4.8911e-06 deg
node 183.9205896757848 1.0596e-05 deg
peri 80.57884656918657 3.2813e-05 deg
M 336.5621468404713 3.0915e-05 deg
tp 2459135.843077847740
(2020-Oct-13.34307785)
0.0001786 TDB
period 2078.838351514194
5.69
1.8393e-05
5.036e-08
d
yr
n .1731736379299437 1.5322e-09 deg/d
Q 3.42193384641722 2.0184e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1511  
   data-arc span      9768 days (26.74 yr)  
   first obs. used      1993-09-15  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53108  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:48:24  

Additional Information
 Earth MOID = 2.03629 au 
 Jupiter MOID = 1.71185 au 
 T_jup = 3.077 
[ 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 13.1   n/a MPO279900  
diameter diameter 11.656 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.090   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37623 Valmiera           Discovered 1993 Sept. 15 by E. W. Elst at the European Southern Observa= tory.
Valmiera (Wolmar) is a city in Northern Latvia. During the thirteenth century it was occupied by the Livonian Order, who built a castle there.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080122/MPCPages.arcLast Updated: 2008-03-05

[ show close-approach data ]
Alternate Designations
 1993 RN4 = 1999 TO222 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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