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16122 Wenyicai (1999 XW67)
Classification: Main-belt Asteroid          SPK-ID: 2016122
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1697260608353116 3.8346e-08  
a 2.424609673141255 1.1452e-08 au
q 2.013090224255797 9.4592e-08 au
i 2.123248539605009 4.5941e-06 deg
node 190.0873356193139 0.00011 deg
peri 312.5533642156076 0.000111 deg
M 102.6558742121961 1.6406e-05 deg
tp 2458607.273767713160
(2019-May-03.77376771)
6.1348e-05 TDB
period 1378.9901913518
3.78
9.7696e-06
2.675e-08
d
yr
n .2610605951062627 1.8495e-09 deg/d
Q 2.836129122026712 1.3395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      896  
   data-arc span      23527 days (64.41 yr)  
   first obs. used      1954-12-22  
   last obs. used      2019-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5238  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 21:00:46  

Additional Information
 Earth MOID = 1.02639 au 
 Jupiter MOID = 2.18407 au 
 T_jup = 3.491 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456613.5 (2013-Nov-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1701748386219866 3.8345e-08  
q 2.011302065115118 9.4827e-08 au
tp 2457229.242598850512
(2015-Jul-25.74259885)
5.6623e-05 TDB
node 190.1369952841144 0.00011008 deg
peri 312.4955511151871 0.00011107 deg
i 2.122275573122113 4.5939e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      896  
   data-arc span      23527 days (64.41 yr)  
   first obs. used      1954-12-22  
   last obs. used      2019-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5238  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 21:00:46  

Additional Information
 Jupiter MOID = 2.18407 au 
 T_jup = 3.491 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.470317709483373E-15 -3.617470338277242E-15 4.733052229642495E-14 4.932517353453007E-15 6.592972826808884E-14 -4.283142290155386E-17
q -3.617470338277242E-15 8.992124298176325E-15 9.588059422163549E-14 -1.293822081733821E-14 -1.211309658718226E-13 3.536269508226215E-16
tp 4.733052229642495E-14 9.588059422163549E-14 3.206200786820618E-9 -2.989704763032453E-11 8.44506884285575E-10 2.436985027253199E-12
node 4.932517353453007E-15 -1.293822081733821E-14 -2.989704763032453E-11 1.211847885377086E-8 -1.211705268493201E-8 1.983196807359517E-11
peri 6.592972826808884E-14 -1.211309658718226E-13 8.44506884285575E-10 -1.211705268493201E-8 1.233700629116007E-8 -1.923121640027972E-11
i -4.283142290155386E-17 3.536269508226215E-16 2.436985027253199E-12 1.983196807359517E-11 -1.923121640027972E-11 2.11043357525674E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO324458  

16122 Wenyicai           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Named in honor of Wenyi Cai for achievement as a finalist in the 2002 Intel Science Talent Search, a science competition for high school seniors. Wenyi is a student at the Naperville Central High School, Naperville, Illinois.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020227/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1999 XW67 = 1993 FN48 = 1997 GE36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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