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85551 (1997 YZ1)
Classification: Main-belt Asteroid          SPK-ID: 2085551
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2154051832875248 3.7684e-08  
a 2.355724289117819 8.6989e-09 au
q 1.848289066845521 8.6736e-08 au
i 3.190034693941957 3.7329e-06 deg
node 58.96256196705552 8.1216e-05 deg
peri 352.9520233082028 8.1873e-05 deg
M 103.1997933094409 1.0945e-05 deg
tp 2458621.916708018396
(2019-May-18.41670802)
3.9268e-05 TDB
period 1320.642035635836
3.62
7.315e-06
2.003e-08
d
yr
n .2725946852257163 1.5099e-09 deg/d
Q 2.863159511390116 1.0573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      886  
   data-arc span      9157 days (25.07 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55431  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:37:42  

Additional Information
 Earth MOID = .859287 au 
 Jupiter MOID = 2.50976 au 
 T_jup = 3.521 
[ 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 15.6   n/a MPO410591  

85551 (1997 YZ1)          Discovered 1997-Dec-21 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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