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249117 (2007 WW8)
Classification: Main-belt Asteroid          SPK-ID: 2249117
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2137412960841713 4.8436e-08  
a 2.710130045293078 2.2593e-08 au
q 2.130863336855481 1.2803e-07 au
i 8.640347736930488 8.891e-06 deg
node 313.3637724139405 3.6376e-05 deg
peri 132.8866309218893 4.4775e-05 deg
M 217.8467772844805 2.5445e-05 deg
tp 2459243.984117988875
(2021-Jan-29.48411799)
0.00011963 TDB
period 1629.609783378512
4.46
2.0378e-05
5.579e-08
d
yr
n .2209117812570116 2.7624e-09 deg/d
Q 3.289396753730674 2.7422e-08 au
  Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      7443 days (20.38 yr)  
   first obs. used      1999-02-21  
   last obs. used      2019-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59032  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:29  

Additional Information
 Earth MOID = 1.15791 au 
 Jupiter MOID = 1.95827 au 
 T_jup = 3.314 
[ 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 15.9   n/a MPO454845  
diameter diameter 4.487 km 0.738 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249117 (2007 WW8)          Discovered 2007-Nov-18 by LINEAR at Socorro
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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