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173171 (1997 EE44)
Classification: Main-belt Asteroid          SPK-ID: 2173171
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05932808469989318 6.5514e-08  
a 3.094493289360056 3.1296e-08 au
q 2.910902929385652 2.0393e-07 au
i 9.69310443709017 8.1359e-06 deg
node 319.732538463662 3.9438e-05 deg
peri 80.77649893507201 7.7615e-05 deg
M 132.0434268706629 6.7159e-05 deg
tp 2457871.215420183449
(2017-Apr-27.71542018)
0.00036826 TDB
period 1988.303810011837
5.44
3.0163e-05
8.258e-08
d
yr
n .181058849350521 2.7467e-09 deg/d
Q 3.27808364933446 3.3153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      371  
   data-arc span      8062 days (22.07 yr)  
   first obs. used      1997-03-11  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63625  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:19:01  

Additional Information
 Earth MOID = 1.9376 au 
 Jupiter MOID = 1.99357 au 
 T_jup = 3.199 
[ 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 15.1   n/a MPO264383  
diameter diameter 4.548 km 1.417 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.085   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173171 (1997 EE44)          Discovered 1997-Mar-11 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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