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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06862520178775576 8.7646e-08  
a 3.11162188890873 3.0811e-08 au
q 2.89808620889517 2.7323e-07 au
i 22.90031247334795 9.822e-06 deg
node 60.68825135286747 2.0354e-05 deg
peri 104.7332257307386 6.6764e-05 deg
M 155.3374566902185 6.1892e-05 deg
tp 2457735.427824943113
(2016-Dec-12.92782494)
0.00034476 TDB
period 2004.835083926604
5.49
2.9777e-05
8.152e-08
d
yr
n .179565891921103 2.667e-09 deg/d
Q 3.325157568922289 3.2925e-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 = 1.97687 au 
 Jupiter MOID = 1.81714 au 
 T_jup = 3.094 
[ 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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