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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596545984792302 6.7196e-08  
a 2.658455555229247 1.9635e-08 au
q 2.234020900984242 1.8548e-07 au
i 4.078051846248234 7.1742e-06 deg
node 144.4278651144791 7.519e-05 deg
peri 176.41971150673 7.7347e-05 deg
M .09231916098488684 1.6589e-05 deg
tp 2459200.093994533441
(2020-Dec-16.59399453)
7.2957e-05 TDB
period 1583.224613416821
4.33
1.754e-05
4.802e-08
d
yr
n .2273840344252036 2.5191e-09 deg/d
Q 3.082890209474251 2.277e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:07:20  

Additional Information
 Earth MOID = 1.21931 au 
 Jupiter MOID = 2.22643 au 
 T_jup = 3.365 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456570.5 (2013-Oct-05.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566230153758048 6.6762e-08  
q 2.244653732221193 1.8345e-07 au
tp 2456033.344673497411
(2012-Apr-15.84467350)
7.8118e-05 TDB
node 144.5064197990819 7.5469e-05 deg
peri 176.4745679497559 7.7741e-05 deg
i 4.067679750634013 7.1556e-06 deg
  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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:07:20  

Additional Information
 Jupiter MOID = 2.22643 au 
 T_jup = 3.365 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.457102700367248E-15 -1.220453919238949E-14 1.785316848247037E-12 -1.573303503703962E-14 4.252901376027563E-13 -2.463772640881401E-15
q -1.220453919238949E-14 3.365221562007981E-14 -5.113379435909879E-12 3.95739771117479E-14 -1.197049993081709E-12 6.59325527460371E-15
tp 1.785316848247037E-12 -5.113379435909879E-12 6.102451301816633E-9 -1.017605068863578E-11 1.477581269882324E-9 -2.790720870101325E-12
node -1.573303503703962E-14 3.95739771117479E-14 -1.017605068863578E-11 5.695582751918944E-9 -5.683626735559035E-9 1.188576407299479E-10
peri 4.252901376027563E-13 -1.197049993081709E-12 1.477581269882324E-9 -5.683626735559035E-9 6.043587526214527E-9 -1.192801270157029E-10
i -2.463772640881401E-15 6.59325527460371E-15 -2.790720870101325E-12 1.188576407299479E-10 -1.192801270157029E-10 5.120316999466564E-11

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1915-May-24 14:14 00:01 Juno 0.00487273639430882 0.00485459386240228 0.00489088634008858 6.53964677643864 6.53964639465371 2420642.092919710 1.33380197257754 953.134086238372 65.7114364656542 18.417143492034 3575.99582519281 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 17:07:21 2021-Apr-13 17:07
2031-Oct-20 18:23 00:01 Psych 0.0316371115710503 0.0316328884308533 0.0316413347765266 2.33754632070248 2.33754615709765 2463160.266021930 1.43827298946379 223.907896808629 78.7752525828756 -21.6520128810973 29542.0798381563 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 17:07:21 2021-Apr-13 17:07

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