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129531 (1996 EX9)
Classification: Main-belt Asteroid          SPK-ID: 2129531
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978301268290094 5.0373e-08  
a 2.85866047258973 1.4423e-08 au
q 2.293131308736228 1.458e-07 au
i 3.18499235486061 5.8733e-06 deg
node 132.7824716046487 8.517e-05 deg
peri 346.2243354823109 8.6493e-05 deg
M 31.8627659099711 1.2363e-05 deg
tp 2458844.248835071010
(2019-Dec-26.74883507)
6.0656e-05 TDB
period 1765.39662417799
4.83
1.3361e-05
3.658e-08
d
yr
n .2039201814876158 1.5433e-09 deg/d
Q 3.424189636443232 1.7276e-08 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      12547 days (34.35 yr)  
   first obs. used      1985-12-14  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:45:10  

Additional Information
 Earth MOID = 1.30936 au 
 Jupiter MOID = 1.67131 au 
 T_jup = 3.271 
[ 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 16.0   n/a MPO417675  
diameter diameter 3.601 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129531 (1996 EX9)          Discovered 1996-Mar-12 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1996 EX9 = 1985 XW2 = 2001 FM75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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