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172318 Wangshui (2002 TY342)
Classification: Main-belt Asteroid          SPK-ID: 2172318
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1199100871407959 4.6186e-08  
a 2.790238909946984 1.8827e-08 au
q 2.455661119111602 1.2659e-07 au
i 9.012203705151942 4.8238e-06 deg
node 155.1110658099467 3.4937e-05 deg
peri 352.0903659409297 4.1814e-05 deg
M 167.1914087037478 2.3889e-05 deg
tp 2458209.872403493870
(2018-Apr-01.37240349)
0.00011037 TDB
period 1702.395696937665
4.66
1.723e-05
4.717e-08
d
yr
n .2114666999262169 2.1403e-09 deg/d
Q 3.124816700782366 2.1085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      8947 days (24.50 yr)  
   first obs. used      1995-02-24  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57475  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:45:35  

Additional Information
 Earth MOID = 1.46746 au 
 Jupiter MOID = 1.87595 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457140.5 (2015-Apr-28.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1182123440132591 4.6072e-08  
q 2.460675518107115 1.2611e-07 au
tp 2456502.499052185826
(2013-Jul-28.99905219)
0.00010819 TDB
node 155.2909747464649 3.5012e-05 deg
peri 351.1803224577159 4.2115e-05 deg
i 9.000377310546376 4.8174e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      8947 days (24.50 yr)  
   first obs. used      1995-02-24  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57475  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:45:35  

Additional Information
 Jupiter MOID = 1.87595 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.122589071802519E-15 -5.762820964820801E-15 -4.743996776760192E-13 -3.680350297995639E-15 -1.491614959529127E-13 -1.042671589067014E-15
q -5.762820964820801E-15 1.590414253272687E-14 1.643746905860415E-12 1.353780162360656E-14 4.960285111303116E-13 2.70337611270589E-15
tp -4.743996776760192E-13 1.643746905860415E-12 1.170555918631404E-8 2.373526291161497E-11 2.570614990595493E-9 -9.38355300811866E-12
node -3.680350297995639E-15 1.353780162360656E-14 2.373526291161497E-11 1.225805890704878E-9 -1.204420208172581E-9 -1.905309647107233E-11
peri -1.491614959529127E-13 4.960285111303116E-13 2.570614990595493E-9 -1.204420208172581E-9 1.773643278627672E-9 1.675200818994891E-11
i -1.042671589067014E-15 2.70337611270589E-15 -9.38355300811866E-12 -1.905309647107233E-11 1.675200818994891E-11 2.320694755076772E-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 15.8   n/a MPO493964  

172318 Wangshui           Discovered 2002 Oct. 5 by the Sloan Digital Sky Survey at Apache Point.
Shu-i Wang (b. 1964) is an American optical engineer and a Sloan Digital Sky Survey builder. She has designed and built astronomical instruments, head-up displays, and enhanced vision cameras.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20130127/MPCPages.arcLast Updated: 2013-01-31

[ show close-approach data ]
Alternate Designations
 2002 TY342 = 1995 DT7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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