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JPL Small-Body Database Browser
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136826 (1997 SM4)
Classification: Main-belt Asteroid          SPK-ID: 2136826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2730204678376364 3.8403e-08  
a 2.698993678422701 1.351e-08 au
q 1.962113161648912 1.0229e-07 au
i 7.773028249656656 5.0453e-06 deg
node 216.7936714288245 3.1932e-05 deg
peri 92.44286613604294 3.4356e-05 deg
M 349.0663784902665 9.1274e-06 deg
tp 2458649.688407574124
(2019-Jun-15.18840757)
4.098e-05 TDB
period 1619.575610050188
4.43
1.216e-05
3.329e-08
d
yr
n .2222804528334705 1.669e-09 deg/d
Q 3.435874195196491 1.7198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      8087 days (22.14 yr)  
   first obs. used      1997-09-27  
   last obs. used      2019-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51142  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 11:04:57  

Additional Information
 Earth MOID = .965839 au 
 Jupiter MOID = 1.93652 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457383.5 (2015-Dec-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2736742004378169 3.8301e-08  
q 1.959557932888985 1.0217e-07 au
tp 2457032.207410382538
(2015-Jan-09.70741038)
4.5415e-05 TDB
node 216.8006773310703 3.1929e-05 deg
peri 92.7152141667856 3.435e-05 deg
i 7.774469725194279 5.0484e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      8087 days (22.14 yr)  
   first obs. used      1997-09-27  
   last obs. used      2019-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51142  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 11:04:57  

Additional Information
 Jupiter MOID = 1.93652 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.466961557647918E-15 -3.895091592603955E-15 3.097633774310183E-13 -3.30876629380128E-15 5.574896274216214E-14 -8.831737566405711E-15
q -3.895091592603955E-15 1.043793879840074E-14 -1.060768599161169E-12 1.000556251528223E-14 -2.076595710119065E-13 2.380115552752785E-14
tp 3.097633774310183E-13 -1.060768599161169E-12 2.062488357002864E-9 -5.804717328682634E-12 5.872166898287971E-10 -7.459321002278994E-12
node -3.30876629380128E-15 1.000556251528223E-14 -5.804717328682634E-12 1.019433188117016E-9 -1.011280579734218E-9 -5.192631689594305E-11
peri 5.574896274216214E-14 -2.076595710119065E-13 5.872166898287971E-10 -1.011280579734218E-9 1.179934933585249E-9 4.96102360229206E-11
i -8.831737566405711E-15 2.380115552752785E-14 -7.459321002278994E-12 -5.192631689594305E-11 4.96102360229206E-11 2.548624801192591E-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 15.6   n/a MPO436675  
diameter diameter 1.956 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.242   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136826 (1997 SM4)          Discovered 1997-Sep-27 by Kobayashi, T. at Oizumi
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1997 SM4 = 2001 MA7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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