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118270 (1998 HN129)
Classification: Main-belt Asteroid          SPK-ID: 2118270
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620222842583537 4.7912e-08  
a 2.795431999395596 1.5769e-08 au
q 2.342509721364625 1.3834e-07 au
i 7.681695677373659 5.2526e-06 deg
node 205.6223903002231 3.3242e-05 deg
peri 327.8750214037954 3.6499e-05 deg
M 319.4951163119194 1.4228e-05 deg
tp 2459392.577597028584
(2021-Jun-27.07759703)
6.7871e-05 TDB
period 1707.150561467689
4.67
1.4445e-05
3.955e-08
d
yr
n .2108777093981079 1.7843e-09 deg/d
Q 3.248354277426567 1.8324e-08 au
  Orbit Determination Parameters
   # obs. used (total)      518  
   data-arc span      8341 days (22.84 yr)  
   first obs. used      1998-03-22  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53032  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:19:19  

Additional Information
 Earth MOID = 1.35063 au 
 Jupiter MOID = 1.74232 au 
 T_jup = 3.295 
[ show covariance matrix ]

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 15.4   n/a MPO493675  

118270 (1998 HN129)          Discovered 1998-Apr-19 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1998 HN129 = 2003 JL6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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