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19405 (1998 FT8)
Classification: Main-belt Asteroid          SPK-ID: 2019405
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404442080313254 4.1824e-08  
a 2.688108282676418 1.0323e-08 au
q 2.310579043813482 1.1272e-07 au
i 11.09980124050495 5.3702e-06 deg
node 21.25483842336292 1.7619e-05 deg
peri 213.4358985782781 2.4205e-05 deg
M 65.87224265469314 1.6016e-05 deg
tp 2459101.943565558907
(2020-Sep-09.44356556)
7.1638e-05 TDB
period 1609.787554291481
4.41
9.273e-06
2.539e-08
d
yr
n .2236319935759769 1.2882e-09 deg/d
Q 3.065637521539354 1.1773e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1497  
   data-arc span      17458 days (47.80 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:10:01  

Additional Information
 Earth MOID = 1.30961 au 
 Jupiter MOID = 1.94927 au 
 T_jup = 3.332 
[ 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 14.09   n/a E2021B10  
diameter diameter 3.973 km 0.776 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.256   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19405 (1998 FT8)          Discovered 1998-Mar-21 by Spacewatch at Kitt Peak
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 FT8 = 4238 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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