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173664 (2001 JU2)
Classification: Amor [NEO]          SPK-ID: 2173664
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 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .268838433939064 2.8295e-08  
a 1.517496692435408 3.2612e-09 au
q 1.109535258133363 4.2739e-08 au
i 4.015107539981701 4.6884e-06 deg
node 100.7593502787933 5.5216e-05 deg
peri 227.2775383167585 5.626e-05 deg
M 2.180457024008534 9.2782e-06 deg
tp 2458996.364432752864
(2020-May-26.86443275)
1.7597e-05 TDB
period 682.7945667244034
1.87
2.2011e-06
6.026e-09
d
yr
n .527244968756916 1.6996e-09 deg/d
Q 1.925458126737452 4.1379e-09 au
  Orbit Determination Parameters
   # obs. used (total)      244  
   data-arc span      7125 days (19.51 yr)  
   first obs. used      2001-05-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66402  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-25 05:21:49  

Additional Information
 Earth MOID = .109667 au 
 Jupiter MOID = 3.41333 au 
 T_jup = 4.467 
[ 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 19.6   n/a MPO469862  

173664 (2001 JU2)          Discovered 2001-May-15 by LONEOS at Anderson Mesa
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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