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JPL Small-Body Database Browser
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74247 (1998 SR64)
Classification: Main-belt Asteroid          SPK-ID: 2074247
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0377195244853484 5.2881e-08  
a 2.743805234185511 2.0733e-08 au
q 2.640310205471623 1.5229e-07 au
i 6.470647938183616 5.2114e-06 deg
node 154.2070104846026 4.1059e-05 deg
peri 198.1693565121709 7.7187e-05 deg
M 217.2579707878996 6.8985e-05 deg
tp 2459258.730061660389
(2021-Feb-13.23006166)
0.00032147 TDB
period 1660.077438339041
4.55
1.8816e-05
5.152e-08
d
yr
n .2168573535703196 2.458e-09 deg/d
Q 2.847300262899398 2.1516e-08 au
  Orbit Determination Parameters
   # obs. used (total)      569  
   data-arc span      7538 days (20.64 yr)  
   first obs. used      1998-09-20  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59871  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:19  

Additional Information
 Earth MOID = 1.6333 au 
 Jupiter MOID = 2.31561 au 
 T_jup = 3.338 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456712.5 (2014-Feb-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03753558670496449 5.2791e-08  
q 2.640742225558796 1.5189e-07 au
tp 2455947.780676667235
(2012-Jan-21.28067667)
0.000309 TDB
node 154.223400005678 4.1061e-05 deg
peri 200.144345360323 7.7658e-05 deg
i 6.470438498497048 5.2115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      569  
   data-arc span      7538 days (20.64 yr)  
   first obs. used      1998-09-20  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59871  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:19  

Additional Information
 Jupiter MOID = 2.31561 au 
 T_jup = 3.338 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.786897996981515E-15 -7.954535480561553E-15 -1.590505412133684E-12 -9.781303204613105E-15 -2.972512529576147E-13 1.495319521241899E-15
q -7.954535480561553E-15 2.307020973335061E-14 6.559588767932679E-12 3.069547549054215E-14 1.306174474570369E-12 -2.950943111519081E-15
tp -1.590505412133684E-12 6.559588767932679E-12 9.54780960101364E-8 3.930041420353385E-11 2.038602400712135E-8 1.908281846271046E-11
node -9.781303204613105E-15 3.069547549054215E-14 3.930041420353385E-11 1.685995722370109E-9 -1.666369551196027E-9 4.998006799113067E-11
peri -2.972512529576147E-13 1.306174474570369E-12 2.038602400712135E-8 -1.666369551196027E-9 6.030725649787885E-9 -4.548087687063724E-11
i 1.495319521241899E-15 -2.950943111519081E-15 1.908281846271046E-11 4.998006799113067E-11 -4.548087687063724E-11 2.715969571322238E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO344827  

74247 (1998 SR64)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SR64 = 1998 UN41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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