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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2728841967762928 3.841e-08  
a 2.698891676129561 1.3445e-08 au
q 1.962406788902723 1.0232e-07 au
i 7.772456518966827 5.0449e-06 deg
node 216.7910389014741 3.1936e-05 deg
peri 92.48988381333494 3.4361e-05 deg
M 77.95973719220102 9.0002e-06 deg
tp 2458649.792968521101
(2019-Jun-15.29296852)
4.0994e-05 TDB
period 1619.483798683637
4.43
1.2102e-05
3.313e-08
d
yr
n .2222930543007707 1.6611e-09 deg/d
Q 3.435376563356399 1.7114e-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 = .966926 au 
 Jupiter MOID = 1.93954 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 = 1.93954 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 15.7   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 1.91713348771831 1.91713296318259 1.91713401225752 1.3181141437551 0.924007863163156 2422097.499354634 2.20737576228079 867.142611283069 96.7238463805869 -55.3183200687526 3875145.17661254 T 23 CATAB v2.0f-lin.ifort 2019-Dec-14 11:05:09 2019-Dec-14 11:05
1954-Oct-05 04:20 00:01 Jupiter 1.92161622373142 1.92161574716073 1.92161670030222 1.52918395988516 1.20699235950097 2435020.680535953 1.35366360037038 282.593447151919 89.2293042068603 -56.0184442666013 2066247.29521237 T 23 CATAB v2.0f-lin.ifort 2019-Dec-14 11:05:09 2019-Dec-14 11:05
1990-Feb-19 01:51 < 00:01 Jupiter 1.9345133309603 1.93451282402106 1.93451383789931 1.77564496501591 1.50904583372829 2447941.577040714 0.563151103359775 148.024627853929 51.088485420538 -72.4808067747659 1962323.47834444 T 23 CATAB v2.0f-lin.ifort 2019-Dec-14 11:05:09 2019-Dec-14 11:05
2025-Jul-03 19:41 < 00:01 Jupiter 1.97235085106083 1.97235022966729 1.97235147245403 2.0800294444103 1.86215630296134 2460860.320038315 0.404035200247164 110.192173684942 28.2340205917763 -83.2946329797991 1533966.99941545 T 23 CATAB v2.0f-lin.ifort 2019-Dec-14 11:05:09 2019-Dec-14 11:05

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