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243510 (2009 WE84)
Classification: Main-belt Asteroid          SPK-ID: 2243510
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489374071557973 5.5729e-08  
a 3.154506410009307 4.0973e-08 au
q 2.684682404446178 1.7867e-07 au
i 4.946943751986159 8.0479e-06 deg
node 344.6842038624251 6.3667e-05 deg
peri 125.6725736953033 6.8471e-05 deg
M 277.0026936378917 2.8278e-05 deg
tp 2459472.299031720825
(2021-Sep-14.79903172)
0.00016613 TDB
period 2046.423659563964
5.60
3.987e-05
1.092e-07
d
yr
n .1759166526039413 3.4274e-09 deg/d
Q 3.624330415572436 4.7075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      8009 days (21.93 yr)  
   first obs. used      1997-09-28  
   last obs. used      2019-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61077  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:15:51  

Additional Information
 Earth MOID = 1.70508 au 
 Jupiter MOID = 1.50021 au 
 T_jup = 3.184 
[ 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 16.0   n/a MPO494333  
diameter diameter 2.627 km 0.515 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243510 (2009 WE84)          Discovered 2009-Nov-19 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

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