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JPL Small-Body Database Browser
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226844 (2004 SF40)
Classification: Main-belt Asteroid          SPK-ID: 2226844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08373567232204346 6.2873e-08  
a 2.798643006606762 2.5307e-08 au
q 2.56429675285916 1.7659e-07 au
i 6.48397339745865 7.9022e-06 deg
node 28.86626942403253 4.3987e-05 deg
peri 13.96718201362114 5.7275e-05 deg
M 16.85197751724318 3.5768e-05 deg
tp 2458520.448762021592
(2019-Feb-05.94876202)
0.00016989 TDB
period 1710.092815085922
4.68
2.3196e-05
6.351e-08
d
yr
n .2105148894985049 2.8554e-09 deg/d
Q 3.032989260354365 2.7426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      8468 days (23.18 yr)  
   first obs. used      1995-11-15  
   last obs. used      2019-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52077  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:09:53  

Additional Information
 Earth MOID = 1.57248 au 
 Jupiter MOID = 2.31969 au 
 T_jup = 3.312 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457155.5 (2015-May-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08136125945476891 6.2422e-08  
q 2.572180993032051 1.7438e-07 au
tp 2456809.503067899657
(2014-Jun-01.00306790)
0.0001775 TDB
node 28.93125071778482 4.4065e-05 deg
peri 13.89424288021211 5.8104e-05 deg
i 6.477738763618736 7.8932e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      8468 days (23.18 yr)  
   first obs. used      1995-11-15  
   last obs. used      2019-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52077  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:09:53  

Additional Information
 Jupiter MOID = 2.31969 au 
 T_jup = 3.312 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.896533604250529E-15 -1.078749906917166E-14 -6.457234381127691E-12 1.804101013547796E-14 -1.36652206646056E-12 -4.00450277812368E-15
q -1.078749906917166E-14 3.040992767873867E-14 1.742369703583279E-11 -5.065873625936507E-14 3.708229108983709E-12 1.167500347905082E-14
tp -6.457234381127691E-12 1.742369703583279E-11 3.150603114043654E-8 -1.753602351628751E-11 6.747161219323914E-9 1.058283655935808E-11
node 1.804101013547796E-14 -5.065873625936507E-14 -1.753602351628751E-11 1.941681013035049E-9 -1.932606078393764E-9 -1.682258676523048E-10
peri -1.36652206646056E-12 3.708229108983709E-12 6.747161219323914E-9 -1.932606078393764E-9 3.376122738190998E-9 1.694205819293339E-10
i -4.00450277812368E-15 1.167500347905082E-14 1.058283655935808E-11 -1.682258676523048E-10 1.694205819293339E-10 6.230254060849511E-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 15.7   n/a MPO454630  
diameter diameter 3.390 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226844 (2004 SF40)          Discovered 2004-Sep-17 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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