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74354 (1998 WA6)
Classification: Main-belt Asteroid          SPK-ID: 2074354
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2803385691123625 4.6734e-08  
a 2.687567224787071 1.6342e-08 au
q 1.93413847459698 1.2799e-07 au
i 5.66681835822435 5.2662e-06 deg
node 50.00297648285197 5.1081e-05 deg
peri 333.7787094344739 5.1963e-05 deg
M 335.7787362203592 1.3375e-05 deg
tp 2459108.775881898286
(2020-Sep-16.27588190)
6.0533e-05 TDB
period 1609.301555773785
4.41
1.4678e-05
4.019e-08
d
yr
n .2236995289716877 2.0403e-09 deg/d
Q 3.440995974977162 2.0923e-08 au
  Orbit Determination Parameters
   # obs. used (total)      527  
   data-arc span      8496 days (23.26 yr)  
   first obs. used      1996-05-16  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57322  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:43:37  

Additional Information
 Earth MOID = .940017 au 
 Jupiter MOID = 2.01651 au 
 T_jup = 3.309 
[ 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 15.2   n/a MPO436303  
diameter diameter 4.832 km 0.350 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

74354 (1998 WA6)          Discovered 1998-Nov-18 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WA6 = 2002 QA43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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