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74962 (1999 TW200)
Classification: Main-belt Asteroid          SPK-ID: 2074962
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2517567143503051 4.4124e-08  
a 2.358599612266899 9.5257e-09 au
q 1.764806323414681 1.0704e-07 au
i 4.208209020308738 4.4701e-06 deg
node 302.9464275467733 5.3888e-05 deg
peri 29.81893554021833 5.4369e-05 deg
M 262.6720817390998 9.458e-06 deg
tp 2459358.196503319301
(2021-May-23.69650332)
3.6114e-05 TDB
period 1323.060674633577
3.62
8.0152e-06
2.194e-08
d
yr
n .2720963648169063 1.6484e-09 deg/d
Q 2.952392901119117 1.1924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      718  
   data-arc span      7591 days (20.78 yr)  
   first obs. used      1999-07-16  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:09:34  

Additional Information
 Earth MOID = .755812 au 
 Jupiter MOID = 2.42631 au 
 T_jup = 3.506 
[ 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 15.9   n/a MPO263910  
diameter diameter 4.347 km 0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74962 (1999 TW200)          Discovered 1999-Oct-13 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TW200 = 1999 RD55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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