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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597301051323305 6.8328e-08  
a 2.658180379858669 1.9272e-08 au
q 2.233588948323145 1.8808e-07 au
i 4.076697748246533 7.3778e-06 deg
node 144.440665400845 7.5325e-05 deg
peri 176.5667715469017 7.7477e-05 deg
M 314.4959794593308 1.6573e-05 deg
tp 2459200.588610846316
(2020-Dec-17.08861085)
7.3211e-05 TDB
period 1582.978801626887
4.33
1.7215e-05
4.713e-08
d
yr
n .2274193436008204 2.4732e-09 deg/d
Q 3.082771811394192 2.235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      8543 days (23.39 yr)  
   first obs. used      1995-11-16  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56721  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:57:41  

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 15.7   n/a MPO469250  

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

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