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17955 Sedransk (1999 JZ22)
Classification: Main-belt Asteroid          SPK-ID: 2017955
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05082800530791846 4.5058e-08  
a 2.657624201437482 1.2413e-08 au
q 2.522542464420365 1.2314e-07 au
i 2.166142534888451 3.9174e-06 deg
node 224.4538623999979 0.00011438 deg
peri 341.3757715867954 0.00012128 deg
M 322.1460748020459 4.0731e-05 deg
tp 2459166.897654651106
(2020-Nov-13.39765465)
0.00017917 TDB
period 1582.482011076505
4.33
1.1087e-05
3.035e-08
d
yr
n .2274907376388469 1.5938e-09 deg/d
Q 2.792705938454598 1.3044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      15746 days (43.11 yr)  
   first obs. used      1977-03-12  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:43:10  

Additional Information
 Earth MOID = 1.51779 au 
 Jupiter MOID = 2.16916 au 
 T_jup = 3.384 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456900.5 (2014-Aug-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05231883261214713 4.4785e-08  
q 2.517827507304488 1.2251e-07 au
tp 2457587.018738410220
(2016-Jul-17.51873841)
0.0001746 TDB
node 224.5831547764722 0.00011456 deg
peri 342.0265346410873 0.00012118 deg
i 2.164160431813018 3.9153e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      15746 days (43.11 yr)  
   first obs. used      1977-03-12  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:43:10  

Additional Information
 Jupiter MOID = 2.16916 au 
 T_jup = 3.384 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.005713638800596E-15 -5.463100168612797E-15 -1.792269050313158E-12 -1.587171865263064E-14 -3.014454406887983E-13 -8.814472282628592E-16
q -5.463100168612797E-15 1.500894297454432E-14 4.857508996405587E-12 4.392519504934729E-14 8.022405449760366E-13 2.523063683096494E-15
tp -1.792269050313158E-12 4.857508996405587E-12 3.048505016917323E-8 1.347053116557675E-11 6.90487765505455E-9 3.36785765776775E-12
node -1.587171865263064E-14 4.392519504934729E-14 1.347053116557675E-11 1.312461430961341E-8 -1.311258299560711E-8 -5.786106643402224E-11
peri -3.014454406887983E-13 8.022405449760366E-13 6.90487765505455E-9 -1.311258299560711E-8 1.468470124500652E-8 5.855127868640976E-11
i -8.814472282628592E-16 2.523063683096494E-15 3.36785765776775E-12 -5.786106643402224E-11 5.855127868640976E-11 1.532929982462646E-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 14.9   n/a MPO416901  

17955 Sedransk           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kyra Lauren Sedransk (b. 1985) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her medicine and health project. She attends the Hathaway Brown School, Shaker Heights, Ohio, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ show close-approach data ]
Alternate Designations
 1999 JZ22 = 1977 EN6 = 1991 NB9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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