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181662 (2007 YW55)
Classification: Main-belt Asteroid          SPK-ID: 2181662
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2015351448151972 4.8215e-08  
a 3.104723442724806 2.4878e-08 au
q 2.479012554084125 1.5156e-07 au
i 12.9524528421692 5.4133e-06 deg
node 122.2279920789192 2.6349e-05 deg
peri 40.67451307757864 3.0051e-05 deg
M 119.0642972500326 1.5209e-05 deg
tp 2458539.636356487553
(2019-Feb-25.13635649)
8.1632e-05 TDB
period 1998.171720317409
5.47
2.4017e-05
6.575e-08
d
yr
n .1801646957263583 2.1654e-09 deg/d
Q 3.730434331365487 2.9891e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      8210 days (22.48 yr)  
   first obs. used      1996-12-07  
   last obs. used      2019-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62112  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:31  

Additional Information
 Earth MOID = 1.50407 au 
 Jupiter MOID = 1.35723 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 15.7   n/a MPO475532  

181662 (2007 YW55)          Discovered 2007-Dec-31 by CSS at Catalina
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2007 YW55 = 2000 SD375 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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