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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2018344185828528 3.2344e-08  
a 2.152050199064041 7.9761e-09 au
q 1.717692398374838 7.4063e-08 au
i 2.920120179732494 3.4268e-06 deg
node 343.1387077243622 6.0351e-05 deg
peri 284.6107324696306 6.2887e-05 deg
M 35.73650074031335 1.1825e-05 deg
tp 2459086.031353609336
(2020-Aug-24.53135361)
3.8043e-05 TDB
period 1153.126686915729
3.16
6.4107e-06
1.755e-08
d
yr
n .3121946652391621 1.7356e-09 deg/d
Q 2.586407999753245 9.586e-09 au
  Orbit Determination Parameters
   # obs. used (total)      638  
   data-arc span      8098 days (22.17 yr)  
   first obs. used      1998-04-25  
   last obs. used      2020-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:12:41  

Additional Information
 Earth MOID = .702907 au 
 Jupiter MOID = 2.51244 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 16.58   n/a E2021B55  

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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