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173168 (1997 EB2)
Classification: Main-belt Asteroid          SPK-ID: 2173168
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2346167529060774 2.6809e-08  
a 2.416695074753615 1.0515e-08 au
q 1.849697923550812 6.6264e-08 au
i 3.837158023341465 6.2064e-06 deg
node 176.4025528868066 4.7568e-05 deg
peri 270.098720106223 5.0141e-05 deg
M 113.980267775661 1.5999e-05 deg
tp 2458566.031409994833
(2019-Mar-23.53140999)
5.9449e-05 TDB
period 1372.243594915113
3.76
8.9561e-06
2.452e-08
d
yr
n .2623440920649876 1.7122e-09 deg/d
Q 2.983692225956418 1.2982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      373  
   data-arc span      8483 days (23.23 yr)  
   first obs. used      1997-03-04  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5269  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:24:23  

Additional Information
 Earth MOID = .8707 au 
 Jupiter MOID = 2.259 au 
 T_jup = 3.475 
[ 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 17.0   n/a MPO454188  

173168 (1997 EB2)          Discovered 1997-Mar-04 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1997 EB2 = 2003 UW161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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