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JPL Small-Body Database Browser
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154564 (2003 HR28)
Classification: Main-belt Asteroid          SPK-ID: 2154564
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2381370668516291 4.5486e-08  
a 2.720235032872684 1.8396e-08 au
q 2.072446240997338 1.2546e-07 au
i 9.356083133810861 4.9622e-06 deg
node 51.20991405643841 3.3917e-05 deg
peri 263.3922250102445 3.5293e-05 deg
M 232.5295358172279 1.0537e-05 deg
tp 2459580.749984512531
(2022-Jan-01.24998451)
4.9682e-05 TDB
period 1638.732515518235
4.49
1.6623e-05
4.551e-08
d
yr
n .2196819777425073 2.2285e-09 deg/d
Q 3.36802382474803 2.2777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      633  
   data-arc span      7958 days (21.79 yr)  
   first obs. used      1998-04-20  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54226  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:33:02  

Additional Information
 Earth MOID = 1.08417 au 
 Jupiter MOID = 2.02489 au 
 T_jup = 3.299 
[ 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 15.1   n/a MPO382085  

154564 (2003 HR28)          Discovered 2003-Apr-26 by NEAT at Haleakala
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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