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442318 (2011 SW118)
Classification: Main-belt Asteroid          SPK-ID: 2442318
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .04554692405534695 6.9768e-08  
a 2.878255246398457 5.5255e-08 au
q 2.747159573278842 2.2551e-07 au
i 11.4889732558313 5.6865e-06 deg
node 113.2270745270302 3.7103e-05 deg
peri 114.699967472482 8.1226e-05 deg
M 71.94738301675551 6.869e-05 deg
tp 2458644.044856936101
(2019-Jun-09.54485694)
0.00034459 TDB
period 1783.579139676546
4.88
5.136e-05
1.406e-07
d
yr
n .2018413380105389 5.8122e-09 deg/d
Q 3.009350919518071 5.7772e-08 au
  Orbit Determination Parameters
   # obs. used (total)      145  
   data-arc span      3696 days (10.12 yr)  
   first obs. used      2009-04-19  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:40:52  

Additional Information
 Earth MOID = 1.75674 au 
 Jupiter MOID = 2.07842 au 
 T_jup = 3.264 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457444.5 (2016-Feb-26.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04344839372950256 7.031e-08  
q 2.752165935437989 2.2561e-07 au
tp 2456863.493149471570
(2014-Jul-24.99314947)
0.00038504 TDB
node 113.2709497769434 3.7164e-05 deg
peri 115.0739613752075 8.4209e-05 deg
i 11.48005170081731 5.6833e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      145  
   data-arc span      3696 days (10.12 yr)  
   first obs. used      2009-04-19  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:40:52  

Additional Information
 Jupiter MOID = 2.07842 au 
 T_jup = 3.264 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.943447547824784E-15 -1.549575420017481E-14 2.208392461062219E-12 -2.290262548630039E-14 3.205047858469307E-13 -1.424036850939675E-15
q -1.549575420017481E-14 5.089899814964406E-14 -1.704972114670738E-11 7.504723937167956E-14 -2.89056171659485E-12 1.033159904209346E-14
tp 2.208392461062219E-12 -1.704972114670738E-11 1.482568579689073E-7 2.688751222280512E-11 2.915857141767885E-8 -1.83846122939257E-11
node -2.290262548630039E-14 7.504723937167956E-14 2.688751222280512E-11 1.381137779589724E-9 -1.347130157595489E-9 -2.673781802049452E-11
peri 3.205047858469307E-13 -2.89056171659485E-12 2.915857141767885E-8 -1.347130157595489E-9 7.091203480943004E-9 2.297167307643642E-11
i -1.424036850939675E-15 1.033159904209346E-14 -1.83846122939257E-11 -2.673781802049452E-11 2.297167307643642E-11 3.229999460661191E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO434643  

442318 (2011 SW118)          Discovered 2010-Jun-19 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 SW118 = 2013 AB69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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