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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2388915274272706 4.3188e-08  
a 2.656570271024793 1.2895e-08 au
q 2.021938141261802 1.1994e-07 au
i 13.29902478563403 4.9731e-06 deg
node 347.1696696923074 1.6711e-05 deg
peri 312.6152785008978 1.923e-05 deg
M 357.790111131959 1.0218e-05 deg
tp 2459210.208414779299
(2020-Dec-26.70841478)
4.4913e-05 TDB
period 1581.540760303365
4.33
1.1515e-05
3.153e-08
d
yr
n .2276261282895713 1.6574e-09 deg/d
Q 3.291202400787784 1.5976e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      12403 days (33.96 yr)  
   first obs. used      1986-09-07  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:54:20  

Additional Information
 Earth MOID = 1.03068 au 
 Jupiter MOID = 2.09278 au 
 T_jup = 3.309 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456949.5 (2014-Oct-19.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2371237278623533 4.3129e-08  
q 2.029242039593205 1.1948e-07 au
tp 2457628.153700862218
(2016-Aug-27.65370086)
4.2863e-05 TDB
node 347.2248705264255 1.6738e-05 deg
peri 312.2224948358156 1.9271e-05 deg
i 13.28147728294005 4.9664e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      12403 days (33.96 yr)  
   first obs. used      1986-09-07  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:54:20  

Additional Information
 Jupiter MOID = 2.09278 au 
 T_jup = 3.309 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.860135820132088E-15 -5.139379769457914E-15 2.559277119185234E-13 1.025029200162539E-14 1.162927518520577E-13 -1.288720307570757E-16
q -5.139379769457914E-15 1.427464684030232E-14 -6.37312591525595E-13 -3.067631051488534E-14 -3.138028820433649E-13 4.558316599446131E-16
tp 2.559277119185234E-13 -6.37312591525595E-13 1.837198759951622E-9 -1.103696764450597E-11 4.183940136772521E-10 4.490330048155765E-12
node 1.025029200162539E-14 -3.067631051488534E-14 -1.103696764450597E-11 2.801511232233866E-10 -2.738363082494905E-10 -3.344157553107786E-12
peri 1.162927518520577E-13 -3.138028820433649E-13 4.183940136772521E-10 -2.738363082494905E-10 3.713691773407781E-10 4.16225132599998E-12
i -1.288720307570757E-16 4.558316599446131E-16 4.490330048155765E-12 -3.344157553107786E-12 4.16225132599998E-12 2.466543287819006E-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 13.86   n/a E2021B10  

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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