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74816 (1999 TX8)
Classification: Main-belt Asteroid          SPK-ID: 2074816
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2047274494441204 4.5118e-08  
a 2.359931989312984 7.6075e-09 au
q 1.876789132279348 1.0913e-07 au
i 1.690385526904211 4.511e-06 deg
node 320.1712058879149 0.00013493 deg
peri 38.29455890135755 0.00013529 deg
M 253.4673595016829 1.0356e-05 deg
tp 2459392.357215842608
(2021-Jun-26.85721584)
3.9184e-05 TDB
period 1324.181931879998
3.63
6.403e-06
1.753e-08
d
yr
n .2718659659469092 1.3146e-09 deg/d
Q 2.84307484634662 9.165e-09 au
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      7553 days (20.68 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48595  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:08:37  

Additional Information
 Earth MOID = .873351 au 
 Jupiter MOID = 2.60869 au 
 T_jup = 3.523 
[ 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 16.3   n/a MPO432301  
diameter diameter 1.238 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74816 (1999 TX8)          Discovered 1999-Oct-01 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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