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100840 (1998 HD19)
Classification: Main-belt Asteroid          SPK-ID: 2100840
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2166795737428122 4.7585e-08  
a 2.211729538471271 1.0542e-08 au
q 1.732492924840929 1.0275e-07 au
i 3.836694765829107 5.7408e-06 deg
node 224.6590412081102 8.4403e-05 deg
peri 50.2528506060484 8.5995e-05 deg
M 208.0082304675047 1.9004e-05 deg
tp 2459507.740619782939
(2021-Oct-20.24061978)
6.5643e-05 TDB
period 1201.424417147914
3.29
8.5895e-06
2.352e-08
d
yr
n .2996443179127418 2.1423e-09 deg/d
Q 2.690966152101613 1.2826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      7419 days (20.31 yr)  
   first obs. used      1998-03-22  
   last obs. used      2018-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60277  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 03:57:41  

Additional Information
 Earth MOID = .71936 au 
 Jupiter MOID = 2.43046 au 
 T_jup = 3.623 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456102.5 (2012-Jun-24.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2163864080241499 4.7457e-08  
q 1.732673068291348 1.0247e-07 au
tp 2455901.990472398184
(2011-Dec-06.49047240)
5.3426e-05 TDB
node 224.7754323531121 8.4216e-05 deg
peri 49.69439497921056 8.584e-05 deg
i 3.840275931510156 5.7497e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      7419 days (20.31 yr)  
   first obs. used      1998-03-22  
   last obs. used      2018-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60277  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 03:57:41  

Additional Information
 Jupiter MOID = 2.43046 au 
 T_jup = 3.623 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.252164857755734E-15 -4.848922907104778E-15 5.158041493792645E-13 4.03107513038266E-15 4.701593195085473E-14 -3.280886620097342E-15
q -4.848922907104778E-15 1.050092814267628E-14 -9.975971075721332E-13 -1.137086002090604E-14 -6.309210190558415E-14 7.029775591472694E-15
tp 5.158041493792645E-13 -9.975971075721332E-13 2.854361173384826E-9 -9.244931147400726E-12 9.052738845429916E-10 -6.14317187369525E-12
node 4.03107513038266E-15 -1.137086002090604E-14 -9.244931147400726E-12 7.092412222438157E-9 -7.079516165919633E-9 -1.748017234438064E-10
peri 4.701593195085473E-14 -6.309210190558415E-14 9.052738845429916E-10 -7.079516165919633E-9 7.368460736208707E-9 1.726571139408743E-10
i -3.280886620097342E-15 7.029775591472694E-15 -6.14317187369525E-12 -1.748017234438064E-10 1.726571139408743E-10 3.305893913054642E-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 16.7   n/a MPO453462  
diameter diameter 4.124 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.022   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100840 (1998 HD19)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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