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JPL Small-Body Database Browser
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27118 (1998 WD8)
Classification: Main-belt Asteroid          SPK-ID: 2027118
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02326173474998822 4.016e-08  
a 2.744074680280072 1.5643e-08 au
q 2.680242742933238 1.0646e-07 au
i 6.219292589447104 4.5713e-06 deg
node 69.88002788898375 4.5025e-05 deg
peri 32.80286204678173 0.00012583 deg
M 167.6674784780286 0.00011846 deg
tp 2457827.216668131069
(2017-Mar-14.71666813)
0.00054594 TDB
period 1660.321977760849
4.55
1.4198e-05
3.887e-08
d
yr
n .2168254138787616 1.8541e-09 deg/d
Q 2.807906617626905 1.6007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1141  
   data-arc span      9309 days (25.49 yr)  
   first obs. used      1993-11-11  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56359  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:26:56  

Additional Information
 Earth MOID = 1.69928 au 
 Jupiter MOID = 2.22425 au 
 T_jup = 3.340 
[ 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 13.9   n/a MPO347725  
diameter diameter 7.753 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.097   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27118 (1998 WD8)          Discovered 1998-Nov-25 by Kobayashi, T. at Oizumi
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WD8 = 1993 VY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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