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101489 (1998 WW43)
Classification: Main-belt Asteroid          SPK-ID: 2101489
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09504680964813456 4.0769e-08  
a 2.653239451220762 1.3879e-08 au
q 2.401057506149662 1.1355e-07 au
i 2.309685320512469 4.1797e-06 deg
node 239.9315683861411 0.0001095 deg
peri 176.2746608227218 0.0001124 deg
M 357.1100735718926 2.5303e-05 deg
tp 2459013.172064712282
(2020-Jun-12.67206471)		 0.00011098 TDB
period 1578.567278409558
4.32		 1.2386e-05
3.391e-08		 d
yr
n .2280548982129593 1.7895e-09 deg/d
Q 2.905421396291863 1.5198e-08 au
   Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      8027 days (21.98 yr)  
   first obs. used      1998-11-20  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56373  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:42  

Additional Information
 Earth MOID = 1.41279 au 
 Jupiter MOID = 2.37778 au 
 T_jup = 3.382 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO359464  
diameter diameter 3.195 km 1.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.131   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101489 (1998 WW43)          Discovered 1998-Nov-20 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 WW43 = 2002 TN22 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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