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441709 (2009 AM42)
Classification: Main-belt Asteroid          SPK-ID: 2441709
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144822606063436 1.011e-07  
a 2.547166456524806 3.7021e-08 au
q 2.255561082441196 2.6727e-07 au
i 4.692398424266533 1.0797e-05 deg
node 262.4595205405983 0.00014352 deg
peri 182.508976496308 0.00015189 deg
M 321.1830814721877 5.193e-05 deg
tp 2459160.604291287388
(2020-Nov-07.10429129)
0.00021491 TDB
period 1484.85627013804
4.07
3.2372e-05
8.863e-08
d
yr
n .2424477084011185 5.2856e-09 deg/d
Q 2.838771830608415 4.1259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      5820 days (15.93 yr)  
   first obs. used      2001-02-20  
   last obs. used      2017-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67052  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:35:44  

Additional Information
 Earth MOID = 1.27173 au 
 Jupiter MOID = 2.35483 au 
 T_jup = 3.428 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456431.5 (2013-May-19.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1137237483677538 9.9454e-08  
q 2.257566299055625 2.625e-07 au
tp 2456185.278977643121
(2012-Sep-14.77897764)
0.00021444 TDB
node 262.547016943866 0.00014381 deg
peri 181.4573933078959 0.00015246 deg
i 4.685730500253939 1.0781e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      5820 days (15.93 yr)  
   first obs. used      2001-02-20  
   last obs. used      2017-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67052  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:35:44  

Additional Information
 Jupiter MOID = 2.35483 au 
 T_jup = 3.428 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.891046002043032E-15 -2.591108086309383E-14 1.233385428775863E-11 3.229538131748219E-13 2.678752442864861E-12 5.575545045208652E-15
q -2.591108086309383E-14 6.890638002157026E-14 -3.193548294721481E-11 -8.522480356643713E-13 -6.884213156293872E-12 -1.351142058172662E-14
tp 1.233385428775863E-11 -3.193548294721481E-11 4.598619539625933E-8 5.936889965586435E-10 1.105563452645699E-8 1.781139802588108E-11
node 3.229538131748219E-13 -8.522480356643713E-13 5.936889965586435E-10 2.06798874049668E-8 -2.046326285720625E-8 8.745319195121316E-10
peri 2.678752442864861E-12 -6.884213156293872E-12 1.105563452645699E-8 -2.046326285720625E-8 2.324496813291137E-8 -8.671679757857538E-10
i 5.575545045208652E-15 -1.351142058172662E-14 1.781139802588108E-11 8.745319195121316E-10 -8.671679757857538E-10 1.162325494097058E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.2   n/a MPO402742  

441709 (2009 AM42)          Discovered 2009-Jan-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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