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20505 (1999 RE16)
Classification: Main-belt Asteroid          SPK-ID: 2020505
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07660384148659471 1.8386e-08  
a 3.161285950940834 1.6118e-08 au
q 2.919119303061164 6.2002e-08 au
i 5.297694969377789 7.7084e-07 deg
node 325.414279007373 1.3624e-05 deg
peri 329.5612347442378 1.9569e-05 deg
M 324.7455414871187 1.6972e-05 deg
tp 2459401.550726419162
(2021-Jul-06.05072642)
9.6809e-05 TDB
period 2053.024342565142
5.62
1.5701e-05
4.299e-08
d
yr
n .1753510625939289 1.341e-09 deg/d
Q 3.403452598820504 1.7352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2297  
   data-arc span      25476 days (69.75 yr)  
   first obs. used      1950-12-09  
   last obs. used      2020-09-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:22:42  

Additional Information
 Earth MOID = 1.90286 au 
 Jupiter MOID = 1.7846 au 
 T_jup = 3.194 
[ 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 12.7   n/a MPO474035  
diameter diameter 10.808 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.166   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20505 (1999 RE16)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RE16 = 1983 VQ2 = 1991 DU2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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