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392137 (2009 HW)
Classification: Main-belt Asteroid          SPK-ID: 2392137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980494357792894 6.513e-08  
a 3.027576417023485 4.3442e-08 au
q 2.427966615853301 2.0966e-07 au
i 20.33370649596363 6.9583e-06 deg
node 206.317240893917 1.9569e-05 deg
peri 281.5021651968627 2.7999e-05 deg
M 22.89787910309916 1.6475e-05 deg
tp 2458478.113404289196
(2018-Dec-25.61340429)
8.8618e-05 TDB
period 1924.159624457365
5.27
4.1414e-05
1.134e-07
d
yr
n .187094664821025 4.0269e-09 deg/d
Q 3.627186218193669 5.2045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      4177 days (11.44 yr)  
   first obs. used      2007-11-15  
   last obs. used      2019-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62719  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:09:21  

Additional Information
 Earth MOID = 1.53427 au 
 Jupiter MOID = 1.79845 au 
 T_jup = 3.121 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457513.5 (2016-May-05.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1988586849983923 6.5105e-08  
q 2.425851946427892 2.0968e-07 au
tp 2456553.099832651964
(2013-Sep-17.59983265)
0.00010544 TDB
node 206.3288222599696 1.9571e-05 deg
peri 281.4955766567399 2.7933e-05 deg
i 20.33306842979632 6.9586e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      4177 days (11.44 yr)  
   first obs. used      2007-11-15  
   last obs. used      2019-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62719  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:09:21  

Additional Information
 Jupiter MOID = 1.79845 au 
 T_jup = 3.121 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.23869557435732E-15 -1.34777651435923E-14 2.242683290454071E-12 -1.763026580028737E-14 3.519886229470645E-13 -3.09290961065492E-14
q -1.34777651435923E-14 4.396514089344121E-14 -8.911942379462218E-12 5.461098884960902E-14 -1.356515569503404E-12 1.02281432961104E-13
tp 2.242683290454071E-12 -8.911942379462218E-12 1.111755065667655E-8 8.122720147124665E-13 2.12100219956175E-9 -4.030764422127215E-11
node -1.763026580028737E-14 5.461098884960902E-14 8.122720147124665E-13 3.830288760210145E-10 -3.579660820727989E-10 -2.554300660731015E-11
peri 3.519886229470645E-13 -1.356515569503404E-12 2.12100219956175E-9 -3.579660820727989E-10 7.802705407343122E-10 1.720973368548383E-11
i -3.09290961065492E-14 1.02281432961104E-13 -4.030764422127215E-11 -2.554300660731015E-11 1.720973368548383E-11 4.842222453997884E-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 15.9   n/a MPO427953  

392137 (2009 HW)          Discovered 2009-Apr-16 by CSS at Catalina
Reference: Last Updated: 2014-04-17

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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