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47048 (1998 WW18)
Classification: Main-belt Asteroid          SPK-ID: 2047048
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06584812113133436 2.8743e-08  
a 2.731058908041475 1.0931e-08 au
q 2.55122381024795 8.0035e-08 au
i 6.389719443498009 3.4911e-06 deg
node 241.7485008845138 2.9536e-05 deg
peri 79.11572124714203 4.1688e-05 deg
M 51.69885578324732 2.8134e-05 deg
tp 2458963.759010170342
(2020-Apr-24.25901017)
0.00012894 TDB
period 1648.523067821821
4.51
9.8972e-06
2.71e-08
d
yr
n .218377289967598 1.3111e-09 deg/d
Q 2.910894005835 1.1651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2195  
   data-arc span      8091 days (22.15 yr)  
   first obs. used      1998-11-18  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45461  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 04:49:12  

Additional Information
 Earth MOID = 1.54599 au 
 Jupiter MOID = 2.27815 au 
 T_jup = 3.342 
[ 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 13.88   n/a E2021B10  
diameter diameter 5.124 km 0.335 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 17.29 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D.; Erasmus, N. (2019) Minor Planet Bull. 46, 166-179.]
geometric albedo albedo 0.244   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

47048 (1998 WW18)          Discovered 1998-Nov-21 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WW18 = 1998 WG4 = 2000 EW19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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