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118271 (1998 HO149)
Classification: Main-belt Asteroid          SPK-ID: 2118271
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2016582183402876 3.2394e-08  
a 2.15170038077287 7.8848e-09 au
q 1.717792315584094 7.4084e-08 au
i 2.919915918766325 3.4302e-06 deg
node 343.1461255845418 6.0365e-05 deg
peri 284.6411574731767 6.2903e-05 deg
M 333.267134060587 1.1929e-05 deg
tp 2459086.107958725454
(2020-Aug-24.60795873)
3.8072e-05 TDB
period 1152.845535192932
3.16
6.3368e-06
1.735e-08
d
yr
n .3122708021242005 1.7164e-09 deg/d
Q 2.585608445961645 9.4748e-09 au
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      8087 days (22.14 yr)  
   first obs. used      1998-04-25  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49025  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:51:31  

Additional Information
 Earth MOID = .704773 au 
 Jupiter MOID = 2.51427 au 
 T_jup = 3.676 
[ 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 16.4   n/a MPO469224  

118271 (1998 HO149)          Discovered 1998-Apr-25 by Elst, E. W. at La Silla
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1998 HO149 = 2001 HG15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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