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117261 (2004 SS57)
Classification: Main-belt Asteroid          SPK-ID: 2117261
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .130469100064061 5.5753e-08  
a 3.104055598221926 2.7365e-08 au
q 2.699072257773101 1.7012e-07 au
i 16.05844750919211 6.4025e-06 deg
node 214.2592059751183 1.7817e-05 deg
peri 191.5594538333475 2.7237e-05 deg
M 301.4757433650079 2.0281e-05 deg
tp 2459325.232734348524
(2021-Apr-20.73273435)
0.00011373 TDB
period 1997.527027033967
5.47
2.6415e-05
7.232e-08
d
yr
n .1802228431094356 2.3832e-09 deg/d
Q 3.509038938670752 3.0935e-08 au
  Orbit Determination Parameters
   # obs. used (total)      610  
   data-arc span      9796 days (26.82 yr)  
   first obs. used      1993-10-09  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5167  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:58:35  

Additional Information
 Earth MOID = 1.70951 au 
 Jupiter MOID = 1.91515 au 
 T_jup = 3.148 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456937.5 (2014-Oct-07.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1332693462087983 5.6653e-08  
q 2.690016060481707 1.7423e-07 au
tp 2457310.941826405225
(2015-Oct-15.44182641)
0.0001032 TDB
node 214.4601728264408 1.7731e-05 deg
peri 188.8867463511781 2.6678e-05 deg
i 16.10335620478276 6.4173e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      610  
   data-arc span      9796 days (26.82 yr)  
   first obs. used      1993-10-09  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5167  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:58:35  

Additional Information
 Jupiter MOID = 1.91515 au 
 T_jup = 3.148 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.209522170512236E-15 -9.786193333364633E-15 -1.312321029280495E-13 -7.549116035632883E-15 -3.5124767274214E-14 -4.974939503208293E-16
q -9.786193333364633E-15 3.035469036810632E-14 7.585197447861441E-13 2.428589370835161E-14 1.471274744250579E-13 2.814677083342659E-15
tp -1.312321029280495E-13 7.585197447861441E-13 1.064927625653894E-8 -1.172592159068295E-11 2.07855636461446E-9 2.696233541356867E-12
node -7.549116035632883E-15 2.428589370835161E-14 -1.172592159068295E-11 3.143928633596718E-10 -3.035469200758007E-10 4.558413818294E-12
peri -3.5124767274214E-14 1.471274744250579E-13 2.07855636461446E-9 -3.035469200758007E-10 7.11709118746411E-10 -3.756726438611235E-12
i -4.974939503208293E-16 2.814677083342659E-15 2.696233541356867E-12 4.558413818294E-12 -3.756726438611235E-12 4.11811688042178E-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 14.7   n/a MPO417610  

117261 (2004 SS57)          Discovered 2004-Sep-16 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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