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385188 (1995 ST49)
Classification: Main-belt Asteroid          SPK-ID: 2385188
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2273144268120669 6.3418e-08  
a 2.314543767257321 1.132e-08 au
q 1.788414577471781 1.4648e-07 au
i 2.5104420425393 6.6254e-06 deg
node 63.22654548356053 0.0001934 deg
peri 316.1727554139116 0.00019528 deg
M 106.9982325581176 2.417e-05 deg
tp 2459014.229639307394
(2020-Jun-13.72963931)
8.5231e-05 TDB
period 1286.164514676345
3.52
9.4356e-06
2.583e-08
d
yr
n .2799019844600452 2.0534e-09 deg/d
Q 2.840672957042861 1.3893e-08 au
  Orbit Determination Parameters
   # obs. used (total)      104  
   data-arc span      9252 days (25.33 yr)  
   first obs. used      1995-09-19  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59745  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:27  

Additional Information
 Earth MOID = .791113 au 
 Jupiter MOID = 2.62157 au 
 T_jup = 3.546 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457752.5 (2016-Dec-30.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2288125256791961 6.3516e-08  
q 1.784357970853814 1.4686e-07 au
tp 2457727.993550218258
(2016-Dec-05.49355022)
8.0374e-05 TDB
node 63.23774673454165 0.00019324 deg
peri 316.0705089918385 0.00019508 deg
i 2.512730241825593 6.6286e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      104  
   data-arc span      9252 days (25.33 yr)  
   first obs. used      1995-09-19  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59745  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:27  

Additional Information
 Jupiter MOID = 2.62157 au 
 T_jup = 3.546 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.034317543498691E-15 -9.311741305076933E-15 -1.815566427217599E-12 -5.564235919410024E-14 -5.278650551384266E-13 -9.683307951421401E-15
q -9.311741305076933E-15 2.156846634684438E-14 4.411633098671144E-12 1.318893290331069E-13 1.287762688450991E-12 2.291152421852284E-14
tp -1.815566427217599E-12 4.411633098671144E-12 6.459915986173177E-9 1.048542779193143E-10 2.200379501177658E-9 1.428146475495171E-11
node -5.564235919410024E-14 1.318893290331069E-13 1.048542779193143E-10 3.734331006732121E-8 -3.727175257057666E-8 -2.162071979765442E-11
peri -5.278650551384266E-13 1.287762688450991E-12 2.200379501177658E-9 -3.727175257057666E-8 3.805527153223088E-8 2.643037753049064E-11
i -9.683307951421401E-15 2.291152421852284E-14 1.428146475495171E-11 -2.162071979765442E-11 2.643037753049064E-11 4.393870855794394E-11

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 18.38   n/a MPCxxxxx  

385188 (1995 ST49)          Discovered 1995-Sep-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-02-19

[ show close-approach data ]
Alternate Designations
 1995 ST49 = 2009 QL42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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