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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2728841634145273 3.8397e-08  
a 2.698891678113203 1.3443e-08 au
q 1.962406880384852 1.0228e-07 au
i 7.772455535703481 5.0449e-06 deg
node 216.791068857015 3.1901e-05 deg
peri 92.48985189243191 3.4327e-05 deg
M 77.95973901980422 9.0001e-06 deg
tp 2458649.792959912861
(2019-Jun-15.29295991)
4.0993e-05 TDB
period 1619.483800469078
4.43
1.2099e-05
3.313e-08
d
yr
n .2222930540556979 1.6608e-09 deg/d
Q 3.435376475841554 1.7111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      8121 days (22.23 yr)  
   first obs. used      1997-09-27  
   last obs. used      2019-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50719  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:49:39  

Additional Information
 Earth MOID = .966927 au 
 Jupiter MOID = 1.93954 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 15.7   n/a MPO493781  
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1919-May-18 23:59 00:02 Jupiter 1.91713350813309 1.91713298357371 1.91713403269595 1.31811536505919 0.924009610466637 2422097.499263223 2.20749092638281 866.777520079616 96.7088367037111 -55.3182700325376 3876237.02357049 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 15:49:41 2020-Nov-12 15:49
1954-Oct-05 04:20 00:01 Jupiter 1.92161623777249 1.92161576122758 1.92161671431752 1.52918503696173 1.20699372675789 2435020.680478235 1.35356660812098 282.381757220107 89.2139814754864 -56.0204007484959 2066818.70487741 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 15:49:41 2020-Nov-12 15:49
1990-Feb-19 01:51 < 00:01 Jupiter 1.93451332764923 1.93451282072979 1.93451383456856 1.77564571885196 1.50904672024588 2447941.577028300 0.563108128041651 147.937858950815 51.0638459825388 -72.5023410874276 1962829.70345543 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 15:49:41 2020-Nov-12 15:49
2025-Jul-03 19:41 < 00:01 Jupiter 1.97235082044994 1.97235019908601 1.97235144181353 2.08003000352784 1.86215692391666 2460860.320057918 0.403909888115496 110.167034715381 28.207343605129 -83.3085449280416 1534272.89843422 T 24 CATAB v2.0f-lin.ifort 2020-Nov-12 15:49:41 2020-Nov-12 15:49

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