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20416 Mansour (1998 RR65)
Classification: Main-belt Asteroid          SPK-ID: 2020416
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 .05561948157020935 3.9325e-08  
a 2.797035829413996 1.2976e-08 au
q 2.641466146648689 1.0841e-07 au
i 5.002859218987372 4.5419e-06 deg
node 353.3153347120961 4.7504e-05 deg
peri 140.5964939266569 6.174e-05 deg
M 149.1557025403339 3.9375e-05 deg
tp 2458492.582199803590
(2019-Jan-09.08219980)
0.00018612 TDB
period 1708.619943657818
4.68
1.189e-05
3.255e-08
d
yr
n .2106963583892806 1.4662e-09 deg/d
Q 2.952605512179303 1.3698e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1426  
   data-arc span      15883 days (43.49 yr)  
   first obs. used      1977-02-18  
   last obs. used      2020-08-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53814  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:20:07  

Additional Information
 Earth MOID = 1.65726 au 
 Jupiter MOID = 2.05197 au 
 T_jup = 3.319 
[ 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 14.13   n/a E2021B10  
diameter diameter 5.751 km 0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.147   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20416 Mansour           Discovered 1998 Sept. 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Philip George Mansour (b. 1991) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his physical science project. He attends the Pine Valley Middle School, San Ramon, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

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Alternate Designations
 1998 RR65 = 1977 DO1 = 1996 FY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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