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120609 (1995 WW12)
Classification: Main-belt Asteroid          SPK-ID: 2120609
[ 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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597300866843873 6.7194e-08  
a 2.658180380389069 1.9158e-08 au
q 2.233588997806785 1.8547e-07 au
i 4.076694990607478 7.1719e-06 deg
node 144.4407011377238 7.524e-05 deg
peri 176.5667437111332 7.7393e-05 deg
M 314.4959701030131 1.6509e-05 deg
tp 2459200.588652047460
(2020-Dec-17.08865205)		 7.2912e-05 TDB
period 1582.978802100677
4.33		 1.7113e-05
4.685e-08		 d
yr
n .2274193435327532 2.4585e-09 deg/d
Q 3.082771762971352 2.2218e-08 au
   Orbit Determination Parameters
   # obs. used (total)      427  
   data-arc span      8847 days (24.22 yr)  
   first obs. used      1995-11-16  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54866  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:59  

Additional Information
 Earth MOID = 1.22088 au 
 Jupiter MOID = 2.2275 au 
 T_jup = 3.365 
[ 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 15.79   n/a E2021B55  

120609 (1995 WW12)          Discovered 1995-Nov-16 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1995 WW12 = 2003 OL5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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