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376430 (2012 HF9)
Classification: Main-belt Asteroid          SPK-ID: 2376430
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1131665636911973 5.8239e-08  
a 2.748286561237635 5.5996e-08 au
q 2.437272415063675 1.6828e-07 au
i 9.368137134647132 8.3481e-06 deg
node 139.1931586803619 4.7207e-05 deg
peri 117.76370655134 6.9222e-05 deg
M 244.6403357694792 6.1966e-05 deg
tp 2459533.764816249320
(2021-Nov-15.26481625)
0.00029773 TDB
period 1664.146087198512
4.56
5.086e-05
1.392e-07
d
yr
n .2163271618815858 6.6115e-09 deg/d
Q 3.059300707411596 6.2333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      5647 days (15.46 yr)  
   first obs. used      2003-04-30  
   last obs. used      2018-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51987  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 05:05:28  

Additional Information
 Earth MOID = 1.43892 au 
 Jupiter MOID = 2.06207 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456991.5 (2014-Nov-30.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1150839548773793 5.7981e-08  
q 2.43021731934276 1.6725e-07 au
tp 2456206.027266070653
(2012-Oct-05.52726607)
0.00023334 TDB
node 139.2464563364266 4.717e-05 deg
peri 117.6559810806935 6.8675e-05 deg
i 9.373693663808094 8.3526e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      5647 days (15.46 yr)  
   first obs. used      2003-04-30  
   last obs. used      2018-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51987  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 05:05:28  

Additional Information
 Jupiter MOID = 2.06207 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.361770514686575E-15 -9.269910254156342E-15 -2.341503428286203E-12 6.797999675258392E-15 -4.985071745623031E-13 1.33745322502789E-15
q -9.269910254156342E-15 2.797174386436275E-14 1.169224173079944E-11 5.7092083786703E-15 2.659082704681301E-12 1.112638694550816E-15
tp -2.341503428286203E-12 1.169224173079944E-11 5.444744708067281E-8 2.064989964948433E-10 1.169052019418976E-8 2.223395777906671E-11
node 6.797999675258392E-15 5.7092083786703E-15 2.064989964948433E-10 2.225048074309274E-9 -2.149004210441569E-9 1.317606634874007E-10
peri -4.985071745623031E-13 2.659082704681301E-12 1.169052019418976E-8 -2.149004210441569E-9 4.716268043707492E-9 -1.249201320050743E-10
i 1.33745322502789E-15 1.112638694550816E-15 2.223395777906671E-11 1.317606634874007E-10 -1.249201320050743E-10 6.976509917276276E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO455714  

376430 (2012 HF9)          Discovered 2007-Feb-23 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-10-21

Alternate Designations
 2012 HF9 = 2007 DP87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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