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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1397731893175429 4.4758e-08  
a 2.685966342586154 1.0517e-08 au
q 2.310540260483311 1.2111e-07 au
i 11.09973786029845 5.6163e-06 deg
node 21.29433264591316 1.772e-05 deg
peri 213.2230575729418 2.441e-05 deg
M 337.4326742914026 1.6371e-05 deg
tp 2459101.292187900348
(2020-Sep-08.79218790)
7.3131e-05 TDB
period 1607.86386976733
4.40
9.4436e-06
2.586e-08
d
yr
n .2238995519266782 1.3151e-09 deg/d
Q 3.061392424688997 1.1987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1415  
   data-arc span      17072 days (46.74 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51551  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:32:19  

Additional Information
 Earth MOID = 1.30905 au 
 Jupiter MOID = 1.95494 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 14.0   n/a MPO279717  
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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