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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04825259334906559 3.5208e-08  
a 2.323676957625973 8.8713e-09 au
q 2.211553518315053 8.0012e-08 au
i 8.530478072721847 3.6484e-06 deg
node 29.10927619114372 2.4915e-05 deg
peri 150.0059561191165 4.4657e-05 deg
M 153.446930820666 3.7249e-05 deg
tp 2458649.035247184437
(2019-Jun-14.53524718)
0.0001338 TDB
period 1293.784828095533
3.54
7.4091e-06
2.029e-08
d
yr
n .2782533789099416 1.5935e-09 deg/d
Q 2.435800396936893 9.2994e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1394  
   data-arc span      16900 days (46.27 yr)  
   first obs. used      1974-06-17  
   last obs. used      2020-09-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50069  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:53:36  

Additional Information
 Earth MOID = 1.21531 au 
 Jupiter MOID = 2.52187 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 15.09   n/a E2021B10  
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. 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:
[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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