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85550 (1997 YW)
Classification: Main-belt Asteroid          SPK-ID: 2085550
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857069613357186 4.8545e-08  
a 2.639979435567211 1.1354e-08 au
q 2.149716876599238 1.2707e-07 au
i 11.39399330928976 3.8002e-06 deg
node 270.2120977982702 2.359e-05 deg
peri 134.4331574094666 2.6054e-05 deg
M 123.4673717647649 1.0764e-05 deg
tp 2458463.160279093552
(2018-Dec-10.66027909)
4.5741e-05 TDB
period 1566.748338134835
4.29
1.0108e-05
2.767e-08
d
yr
n .2297752556920334 1.4824e-09 deg/d
Q 3.130241994535183 1.3463e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1547  
   data-arc span      8208 days (22.47 yr)  
   first obs. used      1997-12-20  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4657  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:36  

Additional Information
 Earth MOID = 1.1768 au 
 Jupiter MOID = 2.29 au 
 T_jup = 3.343 
[ 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 13.9   n/a MPO337903  

85550 (1997 YW)          Discovered 1997-Dec-20 by Kobayashi, T. at Oizumi
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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