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85521 (1997 WW2)
Classification: Main-belt Asteroid          SPK-ID: 2085521
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 .2339248780918 3.866e-08  
a 2.352540631921186 1.0041e-08 au
q 1.802222851393016 8.8218e-08 au
i 1.285018379818828 4.2798e-06 deg
node 328.0584449968135 0.00020119 deg
peri 49.23152689734322 0.00020144 deg
M 121.2439170099591 1.2418e-05 deg
tp 2458556.624081135146
(2019-Mar-14.12408114)
4.367e-05 TDB
period 1317.965756403446
3.61
8.4383e-06
2.31e-08
d
yr
n .2731482197097384 1.7488e-09 deg/d
Q 2.902858412449355 1.239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      9669 days (26.47 yr)  
   first obs. used      1993-08-13  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54871  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:33:45  

Additional Information
 Earth MOID = .804234 au 
 Jupiter MOID = 2.56379 au 
 T_jup = 3.519 
[ 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 16.4   n/a MPO366214  

85521 (1997 WW2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 WW2 = 2002 CZ14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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