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74365 (1998 WQ28)
Classification: Main-belt Asteroid          SPK-ID: 2074365
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06845281607260034 8.7339e-08  
a 3.112220540880183 3.0555e-08 au
q 2.899180280617943 2.7201e-07 au
i 22.89950438468163 9.8212e-06 deg
node 60.69117868868207 2.0354e-05 deg
peri 104.5073296145967 6.7117e-05 deg
M 227.4044534465781 6.2292e-05 deg
tp 2459739.135898557465
(2022-Jun-08.63589856)
0.00034762 TDB
period 2005.413683886845
5.49
2.9533e-05
8.086e-08
d
yr
n .1795140837486741 2.6436e-09 deg/d
Q 3.325260801142423 3.2646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      635  
   data-arc span      7181 days (19.66 yr)  
   first obs. used      1998-11-11  
   last obs. used      2018-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59077  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:29:52  

Additional Information
 Earth MOID = 1.97809 au 
 Jupiter MOID = 1.81718 au 
 T_jup = 3.093 
[ 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 14.0   n/a MPO319936  
diameter diameter 8.965 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74365 (1998 WQ28)          Discovered 1998-Nov-21 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WQ28 = 2000 BC7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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