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100275 (1994 WW12)
Classification: Main-belt Asteroid          SPK-ID: 2100275
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08441622983781392 4.0788e-08  
a 2.990393350835256 2.4274e-08 au
q 2.737955618425676 1.2352e-07 au
i 11.60693072073068 5.7404e-06 deg
node 286.0986078890825 2.4233e-05 deg
peri 148.8983479201972 4.8657e-05 deg
M 34.54772326186216 3.9694e-05 deg
tp 2459019.237554166365
(2020-Jun-18.73755417)		 0.00020855 TDB
period 1888.821442892138
5.17		 2.2998e-05
6.297e-08		 d
yr
n .1905950408148548 2.3207e-09 deg/d
Q 3.242831083244835 2.6323e-08 au
   Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      9548 days (26.14 yr)  
   first obs. used      1994-11-28  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49749  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:24:53  

Additional Information
 Earth MOID = 1.76022 au 
 Jupiter MOID = 1.97193 au 
 T_jup = 3.220 
[ 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 15.3   n/a MPO453457  
diameter diameter 4.760 km 0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100275 (1994 WW12)          Discovered 1994-Nov-28 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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