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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620222842936084 4.6712e-08  
a 2.7954319992494 1.5054e-08 au
q 2.342509721143564 1.3591e-07 au
i 7.681696748811041 4.5535e-06 deg
node 205.6223912335825 3.2877e-05 deg
peri 327.8750203158386 3.591e-05 deg
M 319.4951163729821 1.3086e-05 deg
tp 2459392.577596723951
(2021-Jun-27.07759672)
6.2282e-05 TDB
period 1707.150561333767
4.67
1.379e-05
3.775e-08
d
yr
n .2108777094146507 1.7035e-09 deg/d
Q 3.248354277355237 1.7494e-08 au
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      8418 days (23.05 yr)  
   first obs. used      1998-03-22  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51002  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:00:51  

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 15.51   n/a MPCxxxxx  

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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