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359844 (2011 UN343)
Classification: Main-belt Asteroid          SPK-ID: 2359844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .173625171064095 5.5763e-08  
a 3.150735942712019 4.7449e-08 au
q 2.603688875680852 1.7752e-07 au
i 12.37473500546218 4.7231e-06 deg
node 125.6032396874126 3.6672e-05 deg
peri 312.2957170525647 4.5918e-05 deg
M 199.5246077536843 3.3713e-05 deg
tp 2460111.088964872145
(2023-Jun-15.58896487)
0.00020882 TDB
period 2042.755731986679
5.59
4.6145e-05
1.263e-07
d
yr
n .1762325247032265 3.981e-09 deg/d
Q 3.697783009743186 5.5687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      8972 days (24.56 yr)  
   first obs. used      1995-12-25  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:21:00  

Additional Information
 Earth MOID = 1.6376 au 
 Jupiter MOID = 1.60049 au 
 T_jup = 3.149 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457118.5 (2015-Apr-06.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .176277521911371 5.5668e-08  
q 2.59242450167601 1.7686e-07 au
tp 2458070.708884357612
(2017-Nov-13.20888436)
0.00016805 TDB
node 125.6370066499577 3.6713e-05 deg
peri 312.4151599059418 4.5666e-05 deg
i 12.37393595206939 4.7227e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      8972 days (24.56 yr)  
   first obs. used      1995-12-25  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:21:00  

Additional Information
 Jupiter MOID = 1.60049 au 
 T_jup = 3.149 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.098906473027396E-15 -9.604349014300959E-15 -2.370231125959741E-12 -1.180290547247513E-14 -3.850646244262932E-13 -1.126645283535728E-14
q -9.604349014300959E-15 3.127941781074152E-14 1.250173040008631E-11 5.141181975518461E-14 1.96884695926887E-12 4.099095306821273E-14
tp -2.370231125959741E-12 1.250173040008631E-11 2.824147328031797E-8 7.896394802620247E-11 4.666542415702233E-9 4.123759691480714E-11
node -1.180290547247513E-14 5.141181975518461E-14 7.896394802620247E-11 1.347854320069018E-9 -1.303523840600717E-9 1.228042524651814E-11
peri -3.850646244262932E-13 1.96884695926887E-12 4.666542415702233E-9 -1.303523840600717E-9 2.085358743371576E-9 -5.182763058988736E-12
i -1.126645283535728E-14 4.099095306821273E-14 4.123759691480714E-11 1.228042524651814E-11 -5.182763058988736E-12 2.230429000209582E-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 16.29   n/a E2021B25  

359844 (2011 UN343)          Discovered 1995-Dec-25 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1926-Nov-13 01:40 00:06 Jupiter 1.83677736096755 1.83677322111818 1.83678150086985 3.76199984431495 3.6373549245621 2424832.569143726 6.17969013808245 547.816581398468 28.3911787759827 69.9124213030801 1980327.03743278 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21
1937-Jun-12 00:35 00:05 Jupiter 1.62194314231407 1.62194247817793 1.62194380647686 3.0594602744072 2.8837203666245 2428696.524382931 5.04591711044949 562.952999105237 25.1359053393741 -89.6205713516683 2176440.4863788 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21
1947-Dec-23 20:37 00:05 Jupiter 1.84120546054264 1.84120302356536 1.84120789754565 2.1223052154916 1.89317340958248 2432543.358856046 4.82544336143437 430.182976603595 69.5520220485813 64.5273354897848 1636258.21989244 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21
2022-Mar-15 22:50 < 00:01 Jupiter 1.95113838278921 1.95113745563512 1.95113930994329 3.87862330838626 3.76503447387933 2459654.451413625 0.544839389854539 72.6977790323357 40.2505924736716 77.7589178016616 2066665.18175812 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21
2032-Sep-30 21:16 00:01 Jupiter 1.61934891693425 1.61934823170298 1.61934960216551 3.25593542852765 3.09111440475552 2463506.386122132 1.21360221093626 141.336739532238 30.9963502529542 -89.0547849886392 2384176.66829235 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21
2043-May-02 19:51 00:02 Jupiter 1.73497552960806 1.73497414595885 1.73497691325776 2.53211253443299 2.33134838342297 2467372.326840057 2.21426915522423 131.490795818045 81.4932500769213 73.9647780909362 2016002.64362047 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21
2128-Jan-26 08:50 00:08 Jupiter 1.66783472594614 1.66783214692123 1.6678373051105 3.35799745877795 3.20319087216259 2498320.868192613 7.65480615839696 809.101617479378 23.8574336829948 81.5525362331788 2192104.23329873 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21
2138-Sep-04 09:30 00:08 Jupiter 1.63707210075744 1.63706885574658 1.63707534583279 2.86115854435182 2.6742151170499 2502194.895509094 8.45832390023927 572.695942030577 48.6049747480074 -70.5989002819287 2198169.88670858 T 9 CATAB v2.0f-lin.ifort 2020-Nov-11 16:21:01 2020-Nov-11 16:21

Alternate Designations
 2011 UN343 = 1995 YR20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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