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JPL Small-Body Database Browser
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19409 (1998 FA12)
Classification: Main-belt Asteroid          SPK-ID: 2019409
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0477612819842259 4.4667e-08  
a 2.324370098571561 9.7718e-09 au
q 2.213355202857981 1.0447e-07 au
i 8.529533094740751 4.8389e-06 deg
node 29.15442987412322 2.533e-05 deg
peri 150.0019130311634 4.7663e-05 deg
M 97.81022809995528 3.9734e-05 deg
tp 2458648.827735740011
(2019-Jun-14.32773574)
0.000143 TDB
period 1294.363765354044
3.54
8.1624e-06
2.235e-08
d
yr
n .2781289229782558 1.7539e-09 deg/d
Q 2.43538499428514 1.0239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1210  
   data-arc span      16416 days (44.94 yr)  
   first obs. used      1974-06-17  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .519  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:47:42  

Additional Information
 Earth MOID = 1.21771 au 
 Jupiter MOID = 2.52332 au 
 T_jup = 3.559 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO474021  
diameter diameter 3.239 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 52.447 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.088   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19409 (1998 FA12)          Discovered 1998-Mar-24 by JPL/GEODSS NEAT at Haleakala
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FA12 = 1991 HY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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