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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .233721584580382 4.1208e-08  
a 2.352615475377254 1.0422e-08 au
q 1.802758458563753 9.5183e-08 au
i 1.284820728255472 4.3065e-06 deg
node 328.0652780314215 0.00023482 deg
peri 49.25380032091432 0.00023505 deg
M 11.98232029880264 1.2057e-05 deg
tp 2458556.630440380259
(2019-Mar-14.13044038)
4.3982e-05 TDB
period 1318.028651319299
3.61
8.7583e-06
2.398e-08
d
yr
n .2731351853691899 1.815e-09 deg/d
Q 2.902472492190754 1.2858e-08 au
  Orbit Determination Parameters
   # obs. used (total)      518  
   data-arc span      9075 days (24.85 yr)  
   first obs. used      1993-08-13  
   last obs. used      2018-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55348  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:45:47  

Additional Information
 Earth MOID = .803991 au 
 Jupiter MOID = 2.56105 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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