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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2154051845627426 3.762e-08  
a 2.355724288753429 8.6812e-09 au
q 1.848289063555561 8.6554e-08 au
i 3.190034944279818 3.7004e-06 deg
node 58.96256410753688 8.1066e-05 deg
peri 352.9520215185373 8.1722e-05 deg
M 103.199793240888 1.0944e-05 deg
tp 2458621.916708357719
(2019-May-18.41670836)
3.926e-05 TDB
period 1320.642035329416
3.62
7.3002e-06
1.999e-08
d
yr
n .2725946852889648 1.5068e-09 deg/d
Q 2.863159513951297 1.0551e-08 au
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      9186 days (25.15 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55694  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:36  

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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