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18769 (1999 JS24)
Classification: Main-belt Asteroid          SPK-ID: 2018769
[ 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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1366039501684186 1.0558e-08  
a 2.974386565767387 1.3958e-08 au
q 2.568073611555685 2.8125e-08 au
i 13.70398291215764 5.7439e-07 deg
node 27.62195513372811 2.686e-06 deg
peri 240.9846909487406 7.599e-06 deg
M 38.70736443706662 7.3243e-06 deg
tp 2458999.041477789816
(2020-May-29.54147779)		 3.7833e-05 TDB
period 1873.676212535293
5.13		 1.3189e-05
3.611e-08		 d
yr
n .1921356516091325 1.3525e-09 deg/d
Q 3.380699519979089 1.5865e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2342  
   data-arc span      14638 days (40.08 yr)  
   first obs. used      1980-10-13  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46811  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:37:32  

Additional Information
 Earth MOID = 1.58421 au 
 Jupiter MOID = 1.78427 au 
 T_jup = 3.205 
[ 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 12.35   n/a E2021B10  
diameter diameter 10.215 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.186   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

18769 (1999 JS24)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JS24 = 1980 TV9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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