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66175 (1998 WD4)
Classification: Main-belt Asteroid          SPK-ID: 2066175
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2160376288071313 3.4032e-08  
a 2.370560859506514 7.5966e-09 au
q 1.858430512475732 8.1747e-08 au
i 2.700488648772601 3.5308e-06 deg
node 166.9164698365134 7.7536e-05 deg
peri 194.0978556205592 7.794e-05 deg
M 64.20926511808862 9.962e-06 deg
tp 2458962.722755611548
(2020-Apr-23.22275561)
3.6184e-05 TDB
period 1333.137948587548
3.65
6.4082e-06
1.754e-08
d
yr
n .2700395712097296 1.298e-09 deg/d
Q 2.882691206537296 9.2377e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1128  
   data-arc span      8658 days (23.70 yr)  
   first obs. used      1997-06-07  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5539  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:00  

Additional Information
 Earth MOID = .853878 au 
 Jupiter MOID = 2.57232 au 
 T_jup = 3.512 
[ 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 15.59   n/a E2021B10  
diameter diameter 2.444 km 0.613 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.205   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66175 (1998 WD4)          Discovered 1998-Nov-20 by Lopez, A., Pacheco, R. at Mallorca
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WD4 = 2000 EV67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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