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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .364464750200085 1.1354e-07  
a 2.294926614825201 1.3002e-08 AU
q 1.458506759425408 2.5898e-07 AU
i 20.78760563468224 1.6679e-05 deg
node 292.8182764070608 3.2429e-05 deg
peri 91.1869269017419 3.8273e-05 deg
M 10.55055866014086 2.0037e-05 deg
tp 2456963.284437595157
(2014-Nov-01.78443760)
7.0727e-05 JED
period 1269.84768269746
3.48
1.0791e-05
2.954e-08
d
yr
n .2834985682970054 2.4092e-09 deg/d
Q 3.131346470224995 1.774e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      326  
   data-arc span      7719 days (21.13 yr)  
   first obs. used      1993-07-23  
   last obs. used      2014-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57531  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:33:33  

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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