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129315 (2005 SS257)
Classification: Main-belt Asteroid          SPK-ID: 2129315
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446792697566866 4.673e-08  
a 3.138637944064971 3.3976e-08 au
q 2.684542098287023 1.5186e-07 au
i 13.66932114672318 7.3377e-06 deg
node 22.0671683002925 2.2202e-05 deg
peri 284.4781860366262 3.3048e-05 deg
M 300.9031163676809 2.5291e-05 deg
tp 2459333.905175386044
(2021-Apr-29.40517539)
0.00014408 TDB
period 2031.001564917306
5.56
3.2979e-05
9.029e-08
d
yr
n .177252448357743 2.8782e-09 deg/d
Q 3.592733789842919 3.8892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      445  
   data-arc span      7539 days (20.64 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:43:07  

Additional Information
 Earth MOID = 1.71207 au 
 Jupiter MOID = 1.88114 au 
 T_jup = 3.151 
[ 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 14.5   n/a MPO432773  
diameter diameter 6.535 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129315 (2005 SS257)          Discovered 2005-Sep-18 by NEAT at Palomar
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2005 SS257 = 1999 RG98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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