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19460 (1998 HW13)
Classification: Main-belt Asteroid          SPK-ID: 2019460
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2386530274816966 4.3643e-08  
a 2.655597153483915 1.2959e-08 au
q 2.021830853033203 1.2098e-07 au
i 13.2984830528004 5.1383e-06 deg
node 347.180677514011 1.6977e-05 deg
peri 312.6574567257106 1.9616e-05 deg
M 312.2048488475391 1.0338e-05 deg
tp 2459210.356805292637
(2020-Dec-26.85680529)
4.5869e-05 TDB
period 1580.671848162139
4.33
1.157e-05
3.168e-08
d
yr
n .227751256795378 1.6671e-09 deg/d
Q 3.289363453934627 1.6052e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1475  
   data-arc span      12337 days (33.78 yr)  
   first obs. used      1986-09-07  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4846  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:32:40  

Additional Information
 Earth MOID = 1.03245 au 
 Jupiter MOID = 2.09462 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456856.5 (2014-Jul-18.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2370446207148001 4.3458e-08  
q 2.029770778194424 1.2021e-07 au
tp 2457627.615806956552
(2016-Aug-27.11580696)
4.4029e-05 TDB
node 347.2619565322241 1.7023e-05 deg
peri 312.081820859838 1.9664e-05 deg
i 13.27073481489556 5.1283e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1475  
   data-arc span      12337 days (33.78 yr)  
   first obs. used      1986-09-07  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4846  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:32:40  

Additional Information
 Jupiter MOID = 2.09462 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.888587849664133E-15 -5.210062272364411E-15 3.044617750427736E-13 9.365248688107478E-15 1.276334673782553E-13 -1.275911769919953E-16
q -5.210062272364411E-15 1.445081645413455E-14 -7.598339808378531E-13 -2.840254375405989E-14 -3.427627199473913E-13 -2.249076961823759E-17
tp 3.044617750427736E-13 -7.598339808378531E-13 1.938596173720833E-9 -9.905108575267077E-12 4.419160212680953E-10 4.247801813261049E-12
node 9.365248688107478E-15 -2.840254375405989E-14 -9.905108575267077E-12 2.89787124017195E-10 -2.830945628854318E-10 -2.160945757180894E-12
peri 1.276334673782553E-13 -3.427627199473913E-13 4.419160212680953E-10 -2.830945628854318E-10 3.866922991571462E-10 2.988732934887691E-12
i -1.275911769919953E-16 -2.249076961823759E-17 4.247801813261049E-12 -2.160945757180894E-12 2.988732934887691E-12 2.629930306504333E-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 13.8   n/a MPO319328  

19460 (1998 HW13)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HW13 = 1986 RE15 = 1986 RW7 = 1999 RG32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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