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154578 (2003 HL54)
Classification: Main-belt Asteroid          SPK-ID: 2154578
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117975577458287 6.4817e-08  
a 2.585827080251058 1.9148e-08 au
q 2.296737927925963 1.7543e-07 au
i 2.146385003688558 4.1849e-06 deg
node 236.6406414380403 0.00018363 deg
peri 328.0716121707734 0.00018635 deg
M 136.6299171547838 3.6246e-05 deg
tp 2458820.077466261826
(2019-Dec-02.57746626)
0.00014916 TDB
period 1518.789709216163
4.16
1.687e-05
4.619e-08
d
yr
n .2370308396320341 2.6329e-09 deg/d
Q 2.874916232576153 2.1289e-08 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      6348 days (17.38 yr)  
   first obs. used      2003-03-31  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:36:26  

Additional Information
 Earth MOID = 1.29369 au 
 Jupiter MOID = 2.08737 au 
 T_jup = 3.412 
[ 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 16.5   n/a MPO426968  

154578 (2003 HL54)          Discovered 2003-Apr-24 by LONEOS at Anderson Mesa
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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