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180711 (2004 HF78)
Classification: Main-belt Asteroid          SPK-ID: 2180711
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0751411908494005 1.347e-07  
a 2.865092732944473 2.9833e-08 au
q 2.649806253097062 3.6774e-07 au
i 2.422293280073966 1.0202e-05 deg
node 37.63855440803098 0.00014363 deg
peri 305.778825106359 0.00015063 deg
M 48.96331734302395 4.5589e-05 deg
tp 2458959.578929046292
(2020-Apr-20.07892905)
0.00022302 TDB
period 1771.358442397122
4.85
2.7666e-05
7.575e-08
d
yr
n .2032338522703647 3.1742e-09 deg/d
Q 3.080379212791884 3.2074e-08 au
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      9777 days (26.77 yr)  
   first obs. used      1994-03-15  
   last obs. used      2020-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57213  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:43:56  

Additional Information
 Earth MOID = 1.64098 au 
 Jupiter MOID = 2.22579 au 
 T_jup = 3.295 
[ 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 16.53   n/a E2021B55  

180711 (2004 HF78)          Discovered 2004-Apr-21 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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