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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3644647906542724 1.2242e-07  
a 2.294926615415742 1.4324e-08 AU
q 1.458506666961326 2.8075e-07 AU
i 20.78762525380928 1.9302e-05 deg
node 292.8182872711664 3.297e-05 deg
peri 91.18690927768218 4.1649e-05 deg
M 10.5505625441143 2.5566e-05 deg
tp 2456963.284423880640
(2014-Nov-01.78442388)
9.0129e-05 JED
period 1269.847683187605
3.48
1.1889e-05
3.255e-08
d
yr
n .2834985681875787 2.6542e-09 deg/d
Q 3.131346563870159 1.9544e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      7695 days (21.07 yr)  
   first obs. used      1993-07-23  
   last obs. used      2014-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5746  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:07:13  

Additional Information
 Earth MOID = .634391 AU 
 T_jup = 3.424 
[ 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 15.2 mag n/a MPO302168  

16851 (1997 YU1)          Discovered 1997-Dec-21 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
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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