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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3644647520287188 8.9402e-08  
a 2.294926615800129 1.2862e-08 AU
q 1.458506755848428 2.0285e-07 AU
i 20.78758958973996 1.107e-05 deg
node 292.8182482633615 2.4299e-05 deg
peri 91.18694509295948 3.2125e-05 deg
M 10.55056387334198 1.4628e-05 deg
tp 2456963.284419182633
(2014-Nov-01.78441918)
5.1681e-05 JED
period 1269.847683506643
3.48
1.0675e-05
2.923e-08
d
yr
n .2834985681163522 2.3833e-09 deg/d
Q 3.13134647575183 1.755e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      7905 days (21.64 yr)  
   first obs. used      1993-07-23  
   last obs. used      2015-03-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56461  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:56:38  

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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