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442647 (2012 TP120)
Classification: Main-belt Asteroid          SPK-ID: 2442647
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0523581287292338 9.8953e-08  
a 2.657639757938036 3.6733e-08 au
q 2.518490713375986 2.4186e-07 au
i 3.718408736004782 6.9837e-06 deg
node 286.1307808778527 0.00010761 deg
peri 225.6088346190952 0.00013138 deg
M 238.0662942666109 8.204e-05 deg
tp 2459932.498861385069
(2022-Dec-18.99886139)
0.00036727 TDB
period 1582.495905771414
4.33
3.2809e-05
8.983e-08
d
yr
n .2274887402154206 4.7163e-09 deg/d
Q 2.796788802500085 3.8656e-08 au
  Orbit Determination Parameters
   # obs. used (total)      89  
   data-arc span      7674 days (21.01 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5494  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:44:56  

Additional Information
 Earth MOID = 1.53162 au 
 Jupiter MOID = 2.20091 au 
 T_jup = 3.382 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457979.5 (2017-Aug-14.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05046211492099031 9.7376e-08  
q 2.525030733349498 2.3703e-07 au
tp 2458340.423172107468
(2018-Aug-09.92317211)
0.00037013 TDB
node 286.1719493525228 0.00010764 deg
peri 223.6965267063406 0.00013425 deg
i 3.717133729834859 6.9787e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      89  
   data-arc span      7674 days (21.01 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5494  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:44:56  

Additional Information
 Jupiter MOID = 2.20091 au 
 T_jup = 3.382 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.4821483932355E-15 -2.293253707788364E-14 1.739710114373513E-11 -1.338426630306926E-13 3.577135730762915E-12 3.728982825075307E-15
q -2.293253707788364E-14 5.618301785270322E-14 -3.877185398302802E-11 3.178163933560452E-13 -7.957457410893528E-12 -8.73030881805333E-15
tp 1.739710114373513E-11 -3.877185398302802E-11 1.369938533225388E-7 -2.79592100545103E-10 2.973770302695515E-8 -1.502937129892275E-12
node -1.338426630306926E-13 3.178163933560452E-13 -2.79592100545103E-10 1.158612112586143E-8 -1.161718181498639E-8 1.277597095498441E-10
peri 3.577135730762915E-12 -7.957457410893528E-12 2.973770302695515E-8 -1.161718181498639E-8 1.802181777459162E-8 -1.280620154104169E-10
i 3.728982825075307E-15 -8.73030881805333E-15 -1.502937129892275E-12 1.277597095498441E-10 -1.280620154104169E-10 4.870185505550532E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.55   n/a E2021B25  

442647 (2012 TP120)          Discovered 2012-Oct-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 TP120 = 2014 AJ41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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