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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857069588903071 4.8611e-08  
a 2.639979436261909 1.1376e-08 au
q 2.149716883620763 1.2727e-07 au
i 11.39399310301041 3.8367e-06 deg
node 270.2120979645275 2.3594e-05 deg
peri 134.4331562735028 2.6073e-05 deg
M 123.467372247103 1.0773e-05 deg
tp 2458463.160276782281
(2018-Dec-10.66027678)
4.5791e-05 TDB
period 1566.748338753259
4.29
1.0127e-05
2.773e-08
d
yr
n .2297752556013369 1.4851e-09 deg/d
Q 3.130241988903056 1.3488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1505  
   data-arc span      8165 days (22.35 yr)  
   first obs. used      1997-12-20  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46094  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:37:42  

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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