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40210 (1998 SL56)
Classification: Main-belt Asteroid          SPK-ID: 2040210
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342383190330232 4.9184e-08  
a 3.042506615562449 1.6035e-08 au
q 2.634085641842494 1.4711e-07 au
i 9.125528264551615 6.4386e-06 deg
node 4.524708163322945 2.3518e-05 deg
peri 300.3472363738982 3.1607e-05 deg
M 152.7564925277358 2.1367e-05 deg
tp 2458573.986753724996
(2019-Mar-31.48675372)
0.00011372 TDB
period 1938.41036645456
5.31
1.5324e-05
4.195e-08
d
yr
n .1857191883772559 1.4682e-09 deg/d
Q 3.450927589282405 1.8187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1202  
   data-arc span      9954 days (27.25 yr)  
   first obs. used      1993-11-10  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53379  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 08:49:47  

Additional Information
 Earth MOID = 1.63377 au 
 Jupiter MOID = 1.89885 au 
 T_jup = 3.207 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.02   n/a MPCxxxxx  
diameter diameter 10.285 km 0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

40210 (1998 SL56)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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