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154575 (2003 HD49)
Classification: Main-belt Asteroid          SPK-ID: 2154575
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2159470325724432 3.9933e-08  
a 2.590100341673833 1.3509e-08 au
q 2.030775858824498 9.9728e-08 au
i 6.0064931139657 5.0133e-06 deg
node 90.72900911967756 5.1913e-05 deg
peri 164.7249609606853 5.3863e-05 deg
M 15.39832465752833 1.5941e-05 deg
tp 2458935.375518006980
(2020-Mar-26.87551801)
6.7184e-05 TDB
period 1522.556124703148
4.17
1.1912e-05
3.261e-08
d
yr
n .2364444857953522 1.8499e-09 deg/d
Q 3.149424824523169 1.6427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      584  
   data-arc span      9657 days (26.44 yr)  
   first obs. used      1994-01-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58384  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:58:48  

Additional Information
 Earth MOID = 1.01657 au 
 Jupiter MOID = 1.9129 au 
 T_jup = 3.379 
[ 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 15.9   n/a MPO320647  

154575 (2003 HD49)          Discovered 2003-Apr-30 by Spacewatch at Kitt Peak
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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Alternate Designations
 2003 HD49 = 1994 AW16 = 1999 LN27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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