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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .364464750644935 9.1818e-08  
a 2.294926615715703 1.2863e-08 AU
q 1.458506758970455 2.0847e-07 AU
i 20.78759062609064 1.1239e-05 deg
node 292.8182517144112 2.4888e-05 deg
peri 91.18694214851951 3.2487e-05 deg
M 10.55056370742388 1.4864e-05 deg
tp 2456963.284419769938
(2014-Nov-01.78441977)
5.251e-05 JED
period 1269.84768343657
3.48
1.0676e-05
2.923e-08
d
yr
n .2834985681319962 2.3834e-09 deg/d
Q 3.131346472460951 1.7551e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      390  
   data-arc span      7880 days (21.57 yr)  
   first obs. used      1993-07-23  
   last obs. used      2015-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57321  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:48:04  

Additional Information
 Earth MOID = .63439 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
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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