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190411 (1999 TF254)
Classification: Main-belt Asteroid          SPK-ID: 2190411
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09422381394195016 5.5436e-08  
a 2.781619972087352 2.3594e-08 au
q 2.519525129380181 1.5291e-07 au
i 4.256608690705338 5.9409e-06 deg
node 330.3138212905141 6.5872e-05 deg
peri 45.47371881450812 7.1635e-05 deg
M 191.0649034927433 2.8469e-05 deg
tp 2459995.674609436864
(2023-Feb-20.17460944)
0.00013764 TDB
period 1694.513841799442
4.64
2.156e-05
5.903e-08
d
yr
n .2124503153174057 2.7031e-09 deg/d
Q 3.043714814794523 2.5817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      370  
   data-arc span      7467 days (20.44 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5732  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:02:11  

Additional Information
 Earth MOID = 1.521 au 
 Jupiter MOID = 2.42466 au 
 T_jup = 3.322 
[ 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 16.11   n/a E2021B55  
diameter diameter 2.976 km 0.293 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190411 (1999 TF254)          Discovered 1999-Oct-12 by Spacewatch at Kitt Peak
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

Alternate Designations
 1999 TF254 = 2006 BD147 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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