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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05632630824624823 4.4381e-08  
a 2.79416163372837 1.4229e-08 au
q 2.636776824257145 1.2521e-07 au
i 5.002823207034885 5.0416e-06 deg
node 353.3627316209888 4.8557e-05 deg
peri 139.4991689811692 6.3521e-05 deg
M 23.62644811521449 4.0241e-05 deg
tp 2458488.537741462599
(2019-Jan-05.03774146)
0.00019064 TDB
period 1705.986988687847
4.67
1.3031e-05
3.568e-08
d
yr
n .2110215390780281 1.6119e-09 deg/d
Q 2.951546443199594 1.5031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1296  
   data-arc span      15419 days (42.21 yr)  
   first obs. used      1977-02-18  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54274  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:21  

Additional Information
 Earth MOID = 1.65341 au 
 Jupiter MOID = 2.05748 au 
 T_jup = 3.320 
[ 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 14.1   n/a MPO384929  
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

[ show close-approach data ]
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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