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120831 (1998 HN130)
Classification: Main-belt Asteroid          SPK-ID: 2120831
[ 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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211361378252715 4.3324e-08  
a 2.712117499637648 1.5636e-08 au
q 2.383582060403211 1.1982e-07 au
i 12.91345114121963 6.4631e-06 deg
node 14.55134811310532 1.9725e-05 deg
peri 117.3798489868295 4.2446e-05 deg
M 29.28210600399878 3.2792e-05 deg
tp 2458867.803036198064
(2020-Jan-19.30303620)		 0.00014861 TDB
period 1631.402705876875
4.47		 1.4108e-05
3.863e-08		 d
yr
n .2206689977300859 1.9083e-09 deg/d
Q 3.040652938872085 1.753e-08 au
   Orbit Determination Parameters
   # obs. used (total)      551  
   data-arc span      8075 days (22.11 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:40:12  

Additional Information
 Earth MOID = 1.42676 au 
 Jupiter MOID = 2.03446 au 
 T_jup = 3.316 
[ 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 15.8   n/a MPO320376  

120831 (1998 HN130)          Discovered 1998-Apr-19 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 HN130 = 2000 SL342 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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