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JPL Small-Body Database Browser
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91129 (1998 HT135)
Classification: Main-belt Asteroid          SPK-ID: 2091129
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06899125770394636 4.4485e-08  
a 2.653450229698416 2.2702e-08 au
q 2.470385361096697 1.2611e-07 au
i 8.819330779295916 5.6563e-06 deg
node 202.4575612319238 3.1207e-05 deg
peri 31.100269868997 5.8844e-05 deg
M 8.379566118271802 5.4925e-05 deg
tp 2458963.751985652572
(2020-Apr-24.25198565)
0.00024062 TDB
period 1578.75538880554
4.32
2.0261e-05
5.547e-08
d
yr
n .2280277252275097 2.9264e-09 deg/d
Q 2.836515098300135 2.4268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      8512 days (23.30 yr)  
   first obs. used      1995-10-23  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61122  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:59:25  

Additional Information
 Earth MOID = 1.46487 au 
 Jupiter MOID = 2.14516 au 
 T_jup = 3.369 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO426567  

91129 (1998 HT135)          Discovered 1998-Apr-19 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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