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16851 (1997 YU1)
Classification: Mars-crossing Asteroid          SPK-ID: 2016851
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3653001592781122 8.8377e-08  
a 2.295113445285444 1.3203e-08 au
q 1.456708138161334 2.0036e-07 au
i 20.76972037831683 1.1011e-05 deg
node 292.730892698974 2.4045e-05 deg
peri 91.32179930066651 3.1816e-05 deg
M 180.4729659769525 1.4105e-05 deg
tp 2458233.832854371746
(2018-Apr-25.33285437)
4.888e-05 JED
period 1270.002753705373
3.48
1.0959e-05
3e-08
d
yr
n .283463952302198 2.4461e-09 deg/d
Q 3.133518752409554 1.8026e-08 au
  Orbit Determination Parameters
   # obs. used (total)      435  
   data-arc span      7931 days (21.71 yr)  
   first obs. used      1993-07-23  
   last obs. used      2015-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .568  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:57:36  

Additional Information
 Earth MOID = .632073 au 
 Jupiter MOID = 2.78266 au 
 T_jup = 3.423 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3 mag n/a MPO337401  

16851 (1997 YU1)          Discovered 1997-Dec-21 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 YU1 = 1993 OK2 = 2000 NY2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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