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74935 (1999 TC172)
Classification: Main-belt Asteroid          SPK-ID: 2074935
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1482264843201925 4.0291e-08  
a 2.40120488363658 1.0205e-08 au
q 2.045282725602653 9.572e-08 au
i 2.360110926652599 4.1233e-06 deg
node 187.1761196273228 9.5259e-05 deg
peri 238.3528215120095 9.6439e-05 deg
M 170.3966140290938 1.3617e-05 deg
tp 2458357.219015674835
(2018-Aug-26.71901567)
5.0394e-05 TDB
period 1359.07133880911
3.72
8.6643e-06
2.372e-08
d
yr
n .26488675739086 1.6887e-09 deg/d
Q 2.757127041670508 1.1718e-08 au
  Orbit Determination Parameters
   # obs. used (total)      818  
   data-arc span      9984 days (27.33 yr)  
   first obs. used      1992-12-26  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:09:34  

Additional Information
 Earth MOID = 1.05999 au 
 Jupiter MOID = 2.53244 au 
 T_jup = 3.509 
[ 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 16.2   n/a MPO432302  
diameter diameter 4.288 km 1.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.032   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

74935 (1999 TC172)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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