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78402 (2002 QW8)
Classification: Main-belt Asteroid          SPK-ID: 2078402
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .167291544709347 5.0112e-08  
a 3.066373314121472 2.2529e-08 au
q 2.553394985746571 1.5189e-07 au
i 2.803441521762035 5.3445e-06 deg
node 126.5456462356906 0.00012532 deg
peri 221.1541975725402 0.00012651 deg
M 104.1263810697623 1.7908e-05 deg
tp 2458433.224221042201
(2018-Nov-10.72422104)
9.5964e-05 TDB
period 1961.263594554252
5.37
2.1614e-05
5.918e-08
d
yr
n .1835551330272968 2.0229e-09 deg/d
Q 3.579351642496372 2.6298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      9316 days (25.51 yr)  
   first obs. used      1995-04-24  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57736  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:01  

Additional Information
 Earth MOID = 1.5475 au 
 Jupiter MOID = 1.84142 au 
 T_jup = 3.209 
[ 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 14.9   n/a MPO453204  
diameter diameter 6.056 km 0.575 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78402 (2002 QW8)          Discovered 2002-Aug-19 by NEAT at Haleakala
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 QW8 = 1998 XC21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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