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487449 (2014 SL18)
Classification: Main-belt Asteroid          SPK-ID: 2487449
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1073547648678913 6.3734e-08  
a 2.625304881521631 3.0217e-08 au
q 2.343465893259349 1.7082e-07 au
i 1.879797921483573 7.5262e-06 deg
node 353.7416883568398 0.00018689 deg
peri 243.5980726949466 0.00018978 deg
M 228.1713287862275 3.516e-05 deg
tp 2459569.451726722740
(2021-Dec-20.95172672)
0.00015601 TDB
period 1553.703149203767
4.25
2.6824e-05
7.344e-08
d
yr
n .2317044927047299 4.0003e-09 deg/d
Q 2.907143869783913 3.3461e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      7191 days (19.69 yr)  
   first obs. used      2000-03-29  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69828  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 23:59:06  

Additional Information
 Earth MOID = 1.33231 au 
 Jupiter MOID = 2.09471 au 
 T_jup = 3.394 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457591.5 (2016-Jul-22.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1083620873080221 6.3468e-08  
q 2.339817607305045 1.7024e-07 au
tp 2458016.818667482929
(2017-Sep-20.31866748)
0.00014495 TDB
node 353.7928719634907 0.00018656 deg
peri 243.8130125183912 0.00018943 deg
i 1.882363564467622 7.5307e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      7191 days (19.69 yr)  
   first obs. used      2000-03-29  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69828  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 23:59:06  

Additional Information
 Jupiter MOID = 2.09471 au 
 T_jup = 3.394 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.028182575042476E-15 -1.066970637726227E-14 -3.370651914276647E-12 2.130814405408724E-14 -7.614471229996022E-13 1.423070990771806E-15
q -1.066970637726227E-14 2.898167657796659E-14 1.005191966817678E-11 -6.355106596516268E-14 2.230732190523803E-12 -3.303310327199334E-15
tp -3.370651914276647E-12 1.005191966817678E-11 2.101028072353905E-8 -7.399530749656133E-11 4.791702292715856E-9 1.214300409043632E-13
node 2.130814405408724E-14 -6.355106596516268E-14 -7.399530749656133E-11 3.480624695109455E-8 -3.48029415065509E-8 3.416469001969127E-10
peri -7.614471229996022E-13 2.230732190523803E-12 4.791702292715856E-9 -3.48029415065509E-8 3.58841187949272E-8 -3.414466591476027E-10
i 1.423070990771806E-15 -3.303310327199334E-15 1.214300409043632E-13 3.416469001969127E-10 -3.414466591476027E-10 5.671076406731371E-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 17.3   n/a MPO456350  

487449 (2014 SL18)          Discovered 2008-Jan-13 by Spacewatch at Kitt Peak
Reference: Last Updated: 2017-03-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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