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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2159418812834594 3.8036e-08  
a 2.370110403679155 8.2974e-09 au
q 1.858304304259179 9.2062e-08 au
i 2.700560343029669 3.7868e-06 deg
node 166.9200022517238 7.8393e-05 deg
peri 194.0587969660019 7.8786e-05 deg
M 10.22728216446419 1.01e-05 deg
tp 2458962.637522427097
(2020-Apr-23.13752243)
3.7264e-05 TDB
period 1332.757980766962
3.65
6.9986e-06
1.916e-08
d
yr
n .2701165591916627 1.4184e-09 deg/d
Q 2.881916503099132 1.0089e-08 au
  Orbit Determination Parameters
   # obs. used (total)      999  
   data-arc span      8109 days (22.20 yr)  
   first obs. used      1997-06-07  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58278  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:34:24  

Additional Information
 Earth MOID = .855369 au 
 Jupiter MOID = 2.57212 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 15.5   n/a MPO436243  
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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