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JPL Small-Body Database Browser
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136743 Echigo (1995 WW1)
Classification: Main-belt Asteroid          SPK-ID: 2136743
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2334784368696491 3.7982e-08  
a 2.341420422411345 1.0894e-08 au
q 1.79474924213207 9.0677e-08 au
i 1.252724355207589 4.5835e-06 deg
node 244.5366603740023 0.00030351 deg
peri 161.7423889520368 0.00030401 deg
M 204.4231696424697 2.0599e-05 deg
tp 2459166.035599647224
(2020-Nov-12.53559965)
7.7924e-05 TDB
period 1308.631982057515
3.58
9.1327e-06
2.5e-08
d
yr
n .27509644035597 1.9199e-09 deg/d
Q 2.888091602690619 1.3437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      454  
   data-arc span      8571 days (23.47 yr)  
   first obs. used      1995-11-16  
   last obs. used      2019-05-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52634  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 05:40:49  

Additional Information
 Earth MOID = .803906 au 
 Jupiter MOID = 2.50758 au 
 T_jup = 3.527 
[ 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 16.6   n/a MPO436674  

136743 Echigo           Discovered 1995 Nov. 16 by N. Sato and T. Urata at Chichibu.
Echigo is a name of an old administrative area in Japan. It was part of the main island of the present Niigata Prefecture, along the coast of the Sea of Japan.
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 2014-05-14Last Updated: 2014-05-15

[ show close-approach data ]
Alternate Designations
 1995 WW1 = 2000 DX31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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