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JPL Small-Body Database Browser
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109938 (2001 SL40)
Classification: Main-belt Asteroid          SPK-ID: 2109938
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1523117521490858 3.5231e-08  
a 2.716219024814717 1.1812e-08 au
q 2.302506945924506 9.6996e-08 au
i 5.592709931742713 3.7502e-06 deg
node 136.8956427505269 4.406e-05 deg
peri 287.3058947474061 4.6931e-05 deg
M 297.8738494250833 1.3788e-05 deg
tp 2458882.674361611757
(2020-Feb-03.17436161)
6.233e-05 TDB
period 1635.104851019793
4.48
1.0666e-05
2.92e-08
d
yr
n .2201693669830855 1.4362e-09 deg/d
Q 3.129931103704928 1.3611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      9426 days (25.81 yr)  
   first obs. used      1994-02-07  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51073  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:08:27  

Additional Information
 Earth MOID = 1.3232 au 
 Jupiter MOID = 2.18856 au 
 T_jup = 3.337 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456966.5 (2014-Nov-05.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1499992188615746 3.4965e-08  
q 2.310299689718727 9.6005e-08 au
tp 2457243.384290938798
(2015-Aug-08.88429094)
6.6964e-05 TDB
node 137.0273571596315 4.3978e-05 deg
peri 286.6114268784997 4.7012e-05 deg
i 5.595486899209301 3.7541e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      9426 days (25.81 yr)  
   first obs. used      1994-02-07  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51073  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:08:27  

Additional Information
 Jupiter MOID = 2.18856 au 
 T_jup = 3.337 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.222540855360599E-15 -3.338429202132272E-15 -2.248207369638761E-13 8.18383645674607E-16 -3.006999835071916E-14 -2.565271985086675E-15
q -3.338429202132272E-15 9.217040185444748E-15 4.064746071511856E-13 -1.67348484192837E-15 2.845004736356735E-14 7.111133981042445E-15
tp -2.248207369638761E-13 4.064746071511856E-13 4.484138687032907E-9 -1.750033242141465E-11 1.133951347562693E-9 2.512098956553541E-12
node 8.18383645674607E-16 -1.67348484192837E-15 -1.750033242141465E-11 1.934097457077629E-9 -1.928892264668475E-9 3.156594878481422E-11
peri -3.006999835071916E-14 2.845004736356735E-14 1.133951347562693E-9 -1.928892264668475E-9 2.210128581507034E-9 -3.08406048982189E-11
i -2.565271985086675E-15 7.111133981042445E-15 2.512098956553541E-12 3.156594878481422E-11 -3.08406048982189E-11 1.409339649590404E-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 15.2   n/a MPO309941  
diameter diameter 2.742 km 0.435 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.235   0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109938 (2001 SL40)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 SL40 = 1994 CL19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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