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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1977803222365828 5.799e-08  
a 3.028336030439426 3.84e-08 au
q 2.429390754498463 1.8143e-07 au
i 20.32944353557077 6.6377e-06 deg
node 206.3104945866752 1.7902e-05 deg
peri 281.6133416134901 2.4901e-05 deg
M 97.65523520454732 1.5227e-05 deg
tp 2458478.347271142158
(2018-Dec-25.84727114)
8.1335e-05 TDB
period 1924.883822102248
5.27
3.6612e-05
1.002e-07
d
yr
n .1870242743309197 3.5573e-09 deg/d
Q 3.62728130638039 4.5995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      4545 days (12.44 yr)  
   first obs. used      2007-11-15  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:22:24  

Additional Information
 Earth MOID = 1.5351 au 
 Jupiter MOID = 1.79554 au 
 T_jup = 3.121 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457664.5 (2016-Oct-03.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1987136949704967 5.7957e-08  
q 2.426572624475231 1.8182e-07 au
tp 2458477.864037191963
(2018-Dec-25.36403719)
8.0861e-05 TDB
node 206.3250842148196 1.7899e-05 deg
peri 281.5029790685529 2.4828e-05 deg
i 20.3335367248239 6.6387e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      4545 days (12.44 yr)  
   first obs. used      2007-11-15  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:22:24  

Additional Information
 Jupiter MOID = 1.79554 au 
 T_jup = 3.121 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.358958741185717E-15 -1.038470469273465E-14 5.190125483346191E-13 -1.939957330005873E-14 7.486418297049921E-14 -2.154061624601558E-14
q -1.038470469273465E-14 3.305928584022911E-14 -1.708499365772372E-12 6.020545263799746E-14 -3.556468260317512E-13 6.935466283250378E-14
tp 5.190125483346191E-13 -1.708499365772372E-12 6.538421348479007E-9 -1.099478071074498E-12 1.408996630045745E-9 -1.922132313799362E-11
node -1.939957330005873E-14 6.020545263799746E-14 -1.099478071074498E-12 3.203746509686288E-10 -2.998464746486684E-10 -9.909375327729583E-12
peri 7.486418297049921E-14 -3.556468260317512E-13 1.408996630045745E-9 -2.998464746486684E-10 6.164124511390768E-10 5.615404067320221E-12
i -2.154061624601558E-14 6.935466283250378E-14 -1.922132313799362E-11 -9.909375327729583E-12 5.615404067320221E-12 4.407216168782215E-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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