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181172 (2005 SQ66)
Classification: Outer Main-belt Asteroid          SPK-ID: 2181172
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06814560125827072 4.5726e-08  
a 3.21225901906392 2.4995e-08 au
q 2.993357696812506 1.4128e-07 au
i 21.65299761921633 5.0206e-06 deg
node 193.554172836078 1.0073e-05 deg
peri 216.5863902432569 3.0081e-05 deg
M 196.5498353098956 2.9074e-05 deg
tp 2460155.266394221459
(2023-Jul-29.76639422)
0.00017379 TDB
period 2102.878896276417
5.76
2.4544e-05
6.72e-08
d
yr
n .1711938812251408 1.9981e-09 deg/d
Q 3.431160341315333 2.6698e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      7566 days (20.71 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51655  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:31  

Additional Information
 Earth MOID = 2.01739 au 
 Jupiter MOID = 1.92291 au 
 T_jup = 3.077 
[ 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 14.55   n/a MPCxxxxx  
diameter diameter 7.200 km 0.388 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181172 (2005 SQ66)          Discovered 2005-Sep-27 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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