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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1399152818470995 4.4778e-08  
a 2.686402248106522 1.0411e-08 au
q 2.310533520408016 1.2105e-07 au
i 11.09915332295156 5.6105e-06 deg
node 21.29034008047953 1.7646e-05 deg
peri 213.274788632136 2.4339e-05 deg
M 22.17073207771544 1.6322e-05 deg
tp 2459101.455007553396
(2020-Sep-08.95500755)
7.2911e-05 TDB
period 1608.255296026814
4.40
9.3492e-06
2.56e-08
d
yr
n .2238450579888517 1.3013e-09 deg/d
Q 3.062270975805027 1.1868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1445  
   data-arc span      17135 days (46.91 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51203  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:08:59  

Additional Information
 Earth MOID = 1.30783 au 
 Jupiter MOID = 1.95313 au 
 T_jup = 3.333 
[ 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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