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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2730204687060382 3.8471e-08  
a 2.698993678089701 1.3544e-08 au
q 1.962113159063017 1.0252e-07 au
i 7.773028064794588 5.0563e-06 deg
node 216.793668899522 3.2274e-05 deg
peri 92.44286864781527 3.4682e-05 deg
M 349.0663786075174 9.1412e-06 deg
tp 2458649.688407037530
(2019-Jun-15.18840704)
4.1044e-05 TDB
period 1619.575609750455
4.43
1.2191e-05
3.338e-08
d
yr
n .2222804528746077 1.6731e-09 deg/d
Q 3.435874197116386 1.7241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      8067 days (22.09 yr)  
   first obs. used      1997-09-27  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51179  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 16:05:14  

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

[ 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 1.91713348436968 1.91713295960304 1.9171340091397 1.31811406614687 0.924007751618414 2422097.499363095 2.212295355804 873.963877290407 97.1449280121967 -55.3455751361616 3858311.73346329 T 22 CATAB v2.0f-lin.ifort 2019-Nov-07 16:05:30 2019-Nov-07 16:05
1954-Oct-05 04:20 00:01 Jupiter 1.92161622014969 1.92161574309281 1.92161669720679 1.52918398129987 1.20699238595138 2435020.680531856 1.35659539492846 286.20838583163 89.5722207828044 -56.0922835860287 2056422.21896227 T 22 CATAB v2.0f-lin.ifort 2019-Nov-07 16:05:30 2019-Nov-07 16:05
1990-Feb-19 01:51 < 00:01 Jupiter 1.9345133284221 1.93451282112637 1.93451383571773 1.77564488238222 1.50904573611524 2447941.577042962 0.564145071556005 149.910235251179 51.3314452625326 -72.2187669236635 1953668.59327801 T 22 CATAB v2.0f-lin.ifort 2019-Nov-07 16:05:30 2019-Nov-07 16:05
2025-Jul-03 19:41 < 00:01 Jupiter 1.97235085097152 1.97235022956173 1.97235147238098 2.08002936161273 1.86215621046597 2460860.320037828 0.404820737758309 110.940155424371 28.5284745223501 -83.0313910670032 1528519.5823737 T 22 CATAB v2.0f-lin.ifort 2019-Nov-07 16:05:30 2019-Nov-07 16:05

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