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78641 (2002 TW38)
Classification: Main-belt Asteroid          SPK-ID: 2078641
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04518179923473573 4.2933e-08  
a 3.165884096957972 2.7363e-08 au
q 3.022843757288774 1.4505e-07 au
i 12.00324294200601 5.608e-06 deg
node 34.27385830538273 2.0422e-05 deg
peri 103.0631663018752 7.2475e-05 deg
M 315.1917425647015 6.7988e-05 deg
tp 2459256.592286577560
(2021-Feb-11.09228658)
0.00038897 TDB
period 2057.505210976913
5.63
2.6675e-05
7.303e-08
d
yr
n .1749691801893762 2.2684e-09 deg/d
Q 3.308924436627169 2.86e-08 au
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      7844 days (21.48 yr)  
   first obs. used      1999-04-06  
   last obs. used      2020-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:07  

Additional Information
 Earth MOID = 2.06267 au 
 Jupiter MOID = 1.72498 au 
 T_jup = 3.168 
[ 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 14.3   n/a MPO453207  
diameter diameter 3.648 km 0.812 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.304   0.226 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78641 (2002 TW38)          Discovered 2002-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 TW38 = 2001 PS37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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