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JPL Small-Body Database Browser
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20474 Reasoner (1999 NV9)
Classification: Main-belt Asteroid          SPK-ID: 2020474
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284545027755357 3.5808e-08  
a 2.271807230618636 7.6752e-09 au
q 1.979983362407652 8.0637e-08 au
i 7.476595856770047 3.5757e-06 deg
node 138.1941232741178 3.3318e-05 deg
peri 49.74258407842421 3.672e-05 deg
M 30.93262018848239 1.5194e-05 deg
tp 2458493.034305085087
(2019-Jan-09.53430508)
5.2738e-05 TDB
period 1250.707180110585
3.42
6.3382e-06
1.735e-08
d
yr
n .2878371578295166 1.4587e-09 deg/d
Q 2.563631098829619 8.6611e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1268  
   data-arc span      10342 days (28.31 yr)  
   first obs. used      1991-01-16  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50718  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:40  

Additional Information
 Earth MOID = .991805 au 
 Jupiter MOID = 2.4087 au 
 T_jup = 3.590 
[ 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 15.0   n/a MPO337431  
diameter diameter 2.780 km 0.395 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.251   0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20474 Reasoner           Discovered 1999 July 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jonathan William Reasoner (b. 1992) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his behavioral science project. He attends the Harelson Elementary School, Tucson, Arizona.
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
 1999 NV9 = 1998 GG10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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