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19455 (1998 FJ145)
Classification: Main-belt Asteroid          SPK-ID: 2019455
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1419044329613638 3.2938e-08  
a 2.425233719367155 7.9436e-09 au
q 2.081082303621579 8.0185e-08 au
i 6.728230973933798 3.3619e-06 deg
node 109.8656951464127 2.745e-05 deg
peri 207.0574239443624 2.9386e-05 deg
M 239.2663083883621 1.049e-05 deg
tp 2459663.152382417021
(2022-Mar-24.65238242)
4.0851e-05 TDB
period 1379.522612510532
3.78
6.7777e-06
1.856e-08
d
yr
n .2609598398281069 1.2821e-09 deg/d
Q 2.769385135112731 9.0708e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3544  
   data-arc span      20823 days (57.01 yr)  
   first obs. used      1964-03-11  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41439  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:54:16  

Additional Information
 Earth MOID = 1.06783 au 
 Jupiter MOID = 2.49832 au 
 T_jup = 3.488 
[ 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 13.65   n/a E2021B10  
diameter diameter 4.176 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.83482 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.403   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19455 (1998 FJ145)          Discovered 1998-Mar-24 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 FJ145 = 1964 EP = 1999 VQ203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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