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18683 (1998 FB111)
Classification: Main-belt Asteroid          SPK-ID: 2018683
[ 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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1954860092225594 1.4396e-08  
a 3.102622226731599 1.5686e-08 au
q 2.496102989502628 4.5967e-08 au
i 7.251403357042239 5.3746e-07 deg
node 292.3858025407137 7.8829e-06 deg
peri 335.4212395122478 8.4521e-06 deg
M 3.013153710521813 5.8155e-06 deg
tp 2459183.792534917007
(2020-Nov-30.29253492)		 3.2183e-05 TDB
period 1996.143578362608
5.47		 1.5138e-05
4.145e-08		 d
yr
n .1803477484797461 1.3677e-09 deg/d
Q 3.70914146396057 1.8753e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1917  
   data-arc span      13069 days (35.78 yr)  
   first obs. used      1984-11-27  
   last obs. used      2020-09-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48262  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:34:53  

Additional Information
 Earth MOID = 1.48045 au 
 Jupiter MOID = 1.43537 au 
 T_jup = 3.180 
[ 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 13.01   n/a E2021B10  
diameter diameter 5.668 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.219   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18683 (1998 FB111)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 FB111 = 1984 WQ3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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