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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08388743698287318 5.0933e-08  
a 2.798282122454842 2.3541e-08 au
q 2.563541407247111 1.3667e-07 au
i 6.483766673449791 5.8361e-06 deg
node 28.85311186435553 4.2011e-05 deg
peri 13.81734190269282 5.4643e-05 deg
M 101.2023177430546 3.3243e-05 deg
tp 2458519.855882124536
(2019-Feb-05.35588212)
0.00015859 TDB
period 1709.762051838404
4.68
2.1576e-05
5.907e-08
d
yr
n .2105556148078698 2.6571e-09 deg/d
Q 3.033022837662573 2.5516e-08 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      8845 days (24.22 yr)  
   first obs. used      1995-11-15  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49812  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:59:09  

Additional Information
 Earth MOID = 1.57226 au 
 Jupiter MOID = 2.3194 au 
 T_jup = 3.312 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457427.5 (2016-Feb-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08213865225444908 5.0464e-08  
q 2.57060966948878 1.3489e-07 au
tp 2456811.192543259955
(2014-Jun-02.69254326)
0.00016823 TDB
node 28.87293419775875 4.202e-05 deg
peri 14.24336837120718 5.528e-05 deg
i 6.482164477640021 5.8348e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      8845 days (24.22 yr)  
   first obs. used      1995-11-15  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49812  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:59:09  

Additional Information
 Jupiter MOID = 2.3194 au 
 T_jup = 3.312 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.546597236351978E-15 -6.728681370018369E-15 -4.5293825600573E-12 2.340971943886184E-15 -9.775000199108818E-13 5.447007145888895E-16
q -6.728681370018369E-15 1.819457518131087E-14 1.159232079963466E-11 -7.888398549335856E-15 2.533646536145713E-12 -1.083642503050874E-15
tp -4.5293825600573E-12 1.159232079963466E-11 2.830126507481097E-8 3.280299614077174E-11 6.064070895760584E-9 -8.959892061384858E-12
node 2.340971943886184E-15 -7.888398549335856E-15 3.280299614077174E-11 1.765665005282803E-9 -1.747158006619967E-9 -9.921747351403333E-11
peri -9.775000199108818E-13 2.533646536145713E-12 6.064070895760584E-9 -1.747158006619967E-9 3.055898352391627E-9 9.67233038257562E-11
i 5.447007145888895E-16 -1.083642503050874E-15 -8.959892061384858E-12 -9.921747351403333E-11 9.67233038257562E-11 3.40448314140814E-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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