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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304435699189612 4.646e-08  
a 3.103375674345253 2.0147e-08 au
q 2.698560272583995 1.5029e-07 au
i 16.05986068424092 5.4837e-06 deg
node 214.2541808536581 1.4646e-05 deg
peri 191.6808214913825 2.5015e-05 deg
M 337.4269923729194 1.8527e-05 deg
tp 2459325.709384840801
(2021-Apr-21.20938484)
0.00010278 TDB
period 1996.870744358042
5.47
1.9445e-05
5.324e-08
d
yr
n .1802820743491505 1.7556e-09 deg/d
Q 3.508191076106512 2.2775e-08 au
  Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      9987 days (27.34 yr)  
   first obs. used      1993-10-09  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:51:52  

Additional Information
 Earth MOID = 1.70809 au 
 Jupiter MOID = 1.91705 au 
 T_jup = 3.148 
[ 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 14.80   n/a E2021B55  

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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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