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117260 (2004 SD55)
Classification: Main-belt Asteroid          SPK-ID: 2117260
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825818889867632 4.6502e-08  
a 2.739884565424033 2.079e-08 au
q 2.239631265863236 1.3037e-07 au
i 13.37095938566105 5.3011e-06 deg
node 119.7985960078145 2.3292e-05 deg
peri 298.2259379684814 2.7694e-05 deg
M 159.5311384776185 1.639e-05 deg
tp 2458266.426089180656
(2018-May-27.92608918)
7.1579e-05 TDB
period 1656.520541486886
4.54
1.8854e-05
5.162e-08
d
yr
n .2173229917673496 2.4735e-09 deg/d
Q 3.24013786498483 2.4585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      570  
   data-arc span      7532 days (20.62 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51738  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:10:50  

Additional Information
 Earth MOID = 1.28725 au 
 Jupiter MOID = 2.15812 au 
 T_jup = 3.287 
[ 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 15.2   n/a MPO432677  
diameter diameter 2.927 km 0.388 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.206   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117260 (2004 SD55)          Discovered 2004-Sep-22 by LINEAR at Socorro
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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