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441521 (2008 SF181)
Classification: Main-belt Asteroid          SPK-ID: 2441521
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2227764590314427 8.4385e-08  
a 2.358949179628483 3.3384e-08 au
q 1.833430834355723 1.8518e-07 au
i 2.489929769846137 9.5003e-06 deg
node 180.083508150215 0.00015889 deg
peri 126.2065297387834 0.0001617 deg
M 131.4277605819761 2.4754e-05 deg
tp 2458517.373442766530
(2019-Feb-02.87344277)
8.6836e-05 TDB
period 1323.354821187611
3.62
2.8092e-05
7.691e-08
d
yr
n .272035885037187 5.7747e-09 deg/d
Q 2.884467524901243 4.0821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      4596 days (12.58 yr)  
   first obs. used      2007-03-26  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60722  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:57:17  

Additional Information
 Earth MOID = .819901 au 
 Jupiter MOID = 2.37699 au 
 T_jup = 3.517 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456872.5 (2014-Aug-03.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2231708176032422 8.4273e-08  
q 1.831795954626839 1.8495e-07 au
tp 2457195.211749685264
(2015-Jun-21.71174969)
8.1155e-05 TDB
node 180.1070868130594 0.00015881 deg
peri 126.3702157458403 0.00016163 deg
i 2.490354041886147 9.5056e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      4596 days (12.58 yr)  
   first obs. used      2007-03-26  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60722  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:57:17  

Additional Information
 Jupiter MOID = 2.37699 au 
 T_jup = 3.517 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.101860848748009E-15 -1.548368485957953E-14 1.603346836497878E-12 -1.035668069589362E-13 3.755498264016808E-13 -1.148122433031193E-14
q -1.548368485957953E-14 3.420705555051198E-14 -3.729513873642564E-12 2.357417274222862E-13 -9.570534084009016E-13 2.444762948690723E-14
tp 1.603346836497878E-12 -3.729513873642564E-12 6.586057580996761E-9 -1.226642529558651E-10 2.451994102678223E-9 4.2331406002843E-13
node -1.035668069589362E-13 2.357417274222862E-13 -1.226642529558651E-10 2.522201880369625E-8 -2.523568654882175E-8 -1.355565540786922E-10
peri 3.755498264016808E-13 -9.570534084009016E-13 2.451994102678223E-9 -2.523568654882175E-8 2.61234515009521E-8 1.363055513944627E-10
i -1.148122433031193E-14 2.444762948690723E-14 4.2331406002843E-13 -1.355565540786922E-10 1.363055513944627E-10 9.03570403100374E-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 18.4   n/a MPO495187  

441521 (2008 SF181)          Discovered 2008-Sep-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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