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18500 (1996 NX3)
Classification: Main-belt Asteroid          SPK-ID: 2018500
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04591932378296411 3.8773e-08  
a 2.314330085739604 7.9254e-09 au
q 2.208057613191872 8.7252e-08 au
i 4.722326989985316 3.8923e-06 deg
node 311.1923998248365 4.3237e-05 deg
peri 208.8284184398263 5.9299e-05 deg
M 130.434870060009 3.9811e-05 deg
tp 2458734.562583129362
(2019-Sep-08.06258313)
0.00014214 TDB
period 1285.986408360425
3.52
6.6058e-06
1.809e-08
d
yr
n .2799407502751012 1.438e-09 deg/d
Q 2.420602558287336 8.2893e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      12339 days (33.78 yr)  
   first obs. used      1986-11-04  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52157  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:30:28  

Additional Information
 Earth MOID = 1.21786 au 
 Jupiter MOID = 2.56209 au 
 T_jup = 3.576 
[ 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 14.71   n/a E2021B10  
diameter diameter 4.179 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.122   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18500 (1996 NX3)          Discovered 1996-Jul-14 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 NX3 = 1986 VD3 = 1997 YR6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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