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JPL Small-Body Database Browser
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154577 (2003 HD54)
Classification: Main-belt Asteroid          SPK-ID: 2154577
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1822927732820786 8.0506e-08  
a 2.541214061761985 1.3438e-08 au
q 2.077969102939978 2.09e-07 au
i 3.018218320255849 6.5216e-06 deg
node 45.26396567487758 0.00010866 deg
peri 134.4126778853578 0.00010942 deg
M 102.1936874662981 1.1592e-05 deg
tp 2458580.468490602226
(2019-Apr-06.96849060)
4.6756e-05 TDB
period 1479.654439840678
4.05
1.1737e-05
3.213e-08
d
yr
n .2433000505433978 1.9299e-09 deg/d
Q 3.004459020583993 1.5888e-08 au
  Orbit Determination Parameters
   # obs. used (total)      366  
   data-arc span      7301 days (19.99 yr)  
   first obs. used      1999-04-09  
   last obs. used      2019-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5937  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:03:29  

Additional Information
 Earth MOID = 1.08256 au 
 Jupiter MOID = 1.95525 au 
 T_jup = 3.420 
[ 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 16.7   n/a MPO426968  

154577 (2003 HD54)          Discovered 2003-Apr-24 by LONEOS at Anderson Mesa
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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