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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 ]

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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.


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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 
[ 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 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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