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324797 (2007 HG20)
Classification: Main-belt Asteroid          SPK-ID: 2324797
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03648252759355034 5.2584e-08  
a 2.98193392929132 4.0782e-08 au
q 2.873145442433805 1.5449e-07 au
i 9.245207054506471 1.1109e-05 deg
node 214.9906725433978 3.5179e-05 deg
peri 59.20752960422789 0.00015944 deg
M 144.3868996486371 0.000157 deg
tp 2458246.153739020492
(2018-May-07.65373902)
0.00081635 TDB
period 1880.812280154712
5.15
3.8584e-05
1.056e-07
d
yr
n .1914066617910359 3.9267e-09 deg/d
Q 3.090722416148834 4.227e-08 au
  Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      5491 days (15.03 yr)  
   first obs. used      2004-11-04  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51573  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 19:32:49  

Additional Information
 Earth MOID = 1.8706 au 
 Jupiter MOID = 1.93673 au 
 T_jup = 3.238 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457488.5 (2016-Apr-10.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03912072314476383 5.1729e-08  
q 2.864523008527752 1.5238e-07 au
tp 2458247.774220857588
(2018-May-09.27422086)
0.00076538 TDB
node 215.0387985192083 3.524e-05 deg
peri 59.65097942922873 0.0001501 deg
i 9.236670428535295 1.1109e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      5491 days (15.03 yr)  
   first obs. used      2004-11-04  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51573  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 19:32:49  

Additional Information
 Jupiter MOID = 1.93673 au 
 T_jup = 3.238 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.675854024890465E-15 -7.625584828690195E-15 -1.342170183716525E-11 -2.822752746715269E-15 -2.646843282982048E-12 -3.242421406023148E-15
q -7.625584828690195E-15 2.321845829896422E-14 4.775667139740529E-11 1.118024777882171E-14 9.244020359654953E-12 1.19127597579735E-14
tp -1.342170183716525E-11 4.775667139740529E-11 5.858067174093991E-7 1.704334183282995E-10 1.116705218812628E-7 -6.177619775865699E-12
node -2.822752746715269E-15 1.118024777882171E-14 1.704334183282995E-10 1.241869748892474E-9 -1.193172187623671E-9 -1.551321762713541E-10
peri -2.646843282982048E-12 9.244020359654953E-12 1.116705218812628E-7 -1.193172187623671E-9 2.253017513931088E-8 1.517757864283439E-10
i -3.242421406023148E-15 1.19127597579735E-14 -6.177619775865699E-12 -1.551321762713541E-10 1.517757864283439E-10 1.234079097965627E-10

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 16.0   n/a MPO494718  

324797 (2007 HG20)          Discovered 2007-Apr-18 by Spacewatch at Kitt Peak
Reference: 20120406/Numbers.arcLast Updated: 2012-04-09

[ show close-approach data ]
Alternate Designations
 2007 HG20 = 2004 VM43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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