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43986 (1997 HF9)
Classification: Main-belt Asteroid          SPK-ID: 2043986
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07878973546427233 4.1505e-08  
a 2.616812076697912 1.2802e-08 au
q 2.41063414541517 1.0929e-07 au
i 6.821212630700268 4.4019e-06 deg
node 234.632244774753 3.1612e-05 deg
peri 358.7902892063167 4.0279e-05 deg
M 198.0222815773575 2.6416e-05 deg
tp 2459896.180782439877
(2022-Nov-12.68078244)
0.00011548 TDB
period 1546.169955455717
4.23
1.1346e-05
3.106e-08
d
yr
n .2328333950156817 1.7086e-09 deg/d
Q 2.822990007980654 1.381e-08 au
  Orbit Determination Parameters
   # obs. used (total)      713  
   data-arc span      12040 days (32.96 yr)  
   first obs. used      1988-02-13  
   last obs. used      2021-01-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60736  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:24:51  

Additional Information
 Earth MOID = 1.39806 au 
 Jupiter MOID = 2.17015 au 
 T_jup = 3.392 
[ 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 15.57   n/a MPCxxxxx  

43986 (1997 HF9)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 HF9 = 1988 CM4 = 2001 FL79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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