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118850 (2000 SL257)
Classification: Main-belt Asteroid          SPK-ID: 2118850
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1239579243401509 4.8221e-08  
a 2.637096740982601 1.7225e-08 au
q 2.310207702686221 1.3216e-07 au
i 2.165721930919183 5.5661e-06 deg
node 225.8644956777084 0.00014404 deg
peri 189.7352684997205 0.00014637 deg
M 178.9427303131048 2.7038e-05 deg
tp 2458223.002361381972
(2018-Apr-14.50236138)
0.00011389 TDB
period 1564.182850081347
4.28
1.5325e-05
4.196e-08
d
yr
n .2301521206304479 2.2549e-09 deg/d
Q 2.963985779278981 1.936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      7149 days (19.57 yr)  
   first obs. used      2000-09-24  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:23:52  

Additional Information
 Earth MOID = 1.32187 au 
 Jupiter MOID = 2.35684 au 
 T_jup = 3.385 
[ 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 16.4   n/a MPO469230  
rotation period rot_per 5.979 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

118850 (2000 SL257)          Discovered 2000-Sep-24 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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