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216209 (2006 UA61)
Classification: Main-belt Asteroid          SPK-ID: 2216209
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1077773257762705 4.513e-08  
a 2.707784307451564 1.7845e-08 au
q 2.415946556015483 1.2907e-07 au
i 28.09231052368033 4.6286e-06 deg
node 234.6404131544207 7.9977e-06 deg
peri 170.0995984588941 2.0717e-05 deg
M 60.32511236742802 1.8746e-05 deg
tp 2458927.781144168533
(2020-Mar-19.28114417)
8.3906e-05 TDB
period 1627.494491868345
4.46
1.6088e-05
4.405e-08
d
yr
n .2211989053104101 2.1866e-09 deg/d
Q 2.999622058887644 1.9768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      7133 days (19.53 yr)  
   first obs. used      2001-07-29  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46147  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:53:53  

Additional Information
 Earth MOID = 1.42819 au 
 Jupiter MOID = 2.39085 au 
 T_jup = 3.187 
[ 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 15.25   n/a MPCxxxxx  
diameter diameter 4.762 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.50916 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.085   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216209 (2006 UA61)          Discovered 2006-Oct-19 by CSS at Catalina
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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