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20547 (1999 RD105)
Classification: Main-belt Asteroid          SPK-ID: 2020547
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1081665115718048 3.4266e-08  
a 3.165157951971392 1.6333e-08 au
q 2.822793857732889 1.1215e-07 au
i 5.715770998401445 3.4837e-06 deg
node 171.2574381630988 3.8877e-05 deg
peri 84.14791374143185 4.3904e-05 deg
M 26.10883605802759 1.796e-05 deg
tp 2459051.331707386388
(2020-Jul-20.83170739)
0.00010291 TDB
period 2056.797370114445
5.63
1.592e-05
4.359e-08
d
yr
n .1750293953263703 1.3548e-09 deg/d
Q 3.507522046209895 1.8099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1885  
   data-arc span      10772 days (29.49 yr)  
   first obs. used      1991-03-15  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48424  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:23:42  

Additional Information
 Earth MOID = 1.81415 au 
 Jupiter MOID = 1.55824 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 13.30   n/a E2021B10  
diameter diameter 10.958 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.085   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20547 (1999 RD105)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RD105 = 1993 RQ10 = 1998 OU5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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