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187121 (2005 QQ82)
Classification: Main-belt Asteroid          SPK-ID: 2187121
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .229814592650342 5.7715e-08  
a 3.081325198528708 2.4349e-08 au
q 2.373191703205598 1.7467e-07 au
i 15.29877595325203 6.466e-06 deg
node 182.6953608619033 1.9278e-05 deg
peri 202.2151366526025 2.2602e-05 deg
M 293.7684414334724 1.5648e-05 deg
tp 2459563.968856306431
(2021-Dec-15.46885631)
8.9437e-05 TDB
period 1975.62598710223
5.41
2.3417e-05
6.411e-08
d
yr
n .1822207251525547 2.1599e-09 deg/d
Q 3.789458693851817 2.9945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      351  
   data-arc span      8534 days (23.36 yr)  
   first obs. used      1997-04-07  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64052  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:54:23  

Additional Information
 Earth MOID = 1.38137 au 
 Jupiter MOID = 1.69552 au 
 T_jup = 3.133 
[ 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 15.39   n/a E2021B55  
diameter diameter 4.880 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187121 (2005 QQ82)          Discovered 2005-Aug-29 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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