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JPL Small-Body Database Browser
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20344 (1998 HF103)
Classification: Main-belt Asteroid          SPK-ID: 2020344
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1690109265317255 5.1707e-08  
a 2.392208004200592 9.5678e-09 au
q 1.98789871295404 1.2565e-07 au
i 2.572071597054113 3.7517e-06 deg
node 44.48926407434699 9.1898e-05 deg
peri 112.7883719165895 9.2552e-05 deg
M 43.53282255623373 1.0558e-05 deg
tp 2458837.077759070533
(2019-Dec-19.57775907)
3.936e-05 TDB
period 1351.440207181867
3.70
8.1078e-06
2.22e-08
d
yr
n .2663824844686997 1.5981e-09 deg/d
Q 2.796517295447143 1.1185e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1258  
   data-arc span      15459 days (42.32 yr)  
   first obs. used      1977-09-10  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:18:28  

Additional Information
 Earth MOID = .998891 au 
 Jupiter MOID = 2.18947 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456700.5 (2014-Feb-12.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1692766734179984 5.1774e-08  
q 1.987660394487055 1.2593e-07 au
tp 2456134.234628482024
(2012-Jul-25.73462848)
3.8263e-05 TDB
node 44.50859703853055 9.1916e-05 deg
peri 112.8958430401959 9.2564e-05 deg
i 2.572099859726308 3.7507e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1258  
   data-arc span      15459 days (42.32 yr)  
   first obs. used      1977-09-10  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:18:28  

Additional Information
 Jupiter MOID = 2.18947 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.680571674433519E-15 -6.507475249009916E-15 1.957283753222463E-13 2.473946154165667E-14 1.49353237315591E-13 -3.157192358694047E-15
q -6.507475249009916E-15 1.585843864109644E-14 -5.151122324079587E-13 -6.064208135708068E-14 -3.677531437520817E-13 7.690438201550247E-15
tp 1.957283753222463E-13 -5.151122324079587E-13 1.464068752155324E-9 -8.470701028530038E-13 4.279642064482229E-10 5.606792157634987E-13
node 2.473946154165667E-14 -6.064208135708068E-14 -8.470701028530038E-13 8.448605763974043E-9 -8.439256184949279E-9 -5.754933369156112E-11
peri 1.49353237315591E-13 -3.677531437520817E-13 4.279642064482229E-10 -8.439256184949279E-9 8.568069157377433E-9 5.751564304433693E-11
i -3.157192358694047E-15 7.690438201550247E-15 5.606792157634987E-13 -5.754933369156112E-11 5.751564304433693E-11 1.406794406629768E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO416924  

20344 (1998 HF103)          Discovered 1998-Apr-25 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HF103 = 1977 RR10 = 1994 GC10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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