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305912 (2009 FH55)
Classification: Main-belt Asteroid          SPK-ID: 2305912
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02420460229220028 6.4248e-08  
a 2.664305566561252 3.6438e-08 au
q 2.599817109937741 1.5648e-07 au
i 3.699748664126841 6.2934e-06 deg
node 80.17475506460623 0.00010658 deg
peri 164.634921159281 0.00020053 deg
M 129.859200236686 0.00016437 deg
tp 2458427.513093087384
(2018-Nov-05.01309309)
0.00073026 TDB
period 1588.453387303921
4.35
3.2586e-05
8.922e-08
d
yr
n .2266355455422129 4.6493e-09 deg/d
Q 2.728794023184762 3.732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      5245 days (14.36 yr)  
   first obs. used      2005-04-12  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56353  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:55:09  

Additional Information
 Earth MOID = 1.58608 au 
 Jupiter MOID = 2.24945 au 
 T_jup = 3.381 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457031.5 (2015-Jan-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02386576105826804 6.258e-08  
q 2.6017978684119 1.5322e-07 au
tp 2456856.816335472829
(2014-Jul-18.31633547)
0.00077221 TDB
node 80.20046107641957 0.00010663 deg
peri 168.9461783458958 0.00020569 deg
i 3.699153117540548 6.2893e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      5245 days (14.36 yr)  
   first obs. used      2005-04-12  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56353  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:55:09  

Additional Information
 Jupiter MOID = 2.24945 au 
 T_jup = 3.381 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.916248768802847E-15 -9.380477960134153E-15 -1.333551818734852E-11 -1.818270685813754E-14 -3.044581801110854E-12 1.15743299739548E-15
q -9.380477960134153E-15 2.347760200238938E-14 2.163989724678416E-11 4.608078199242956E-14 4.964261821672241E-12 -1.942029125251118E-15
tp -1.333551818734852E-11 2.163989724678416E-11 5.96305572559718E-7 1.575639147825017E-10 1.358836323820215E-7 -2.283339454628401E-11
node -1.818270685813754E-14 4.608078199242956E-14 1.575639147825017E-10 1.137100710419827E-8 -1.131084295469434E-8 3.635420937336987E-11
peri -3.044581801110854E-12 4.964261821672241E-12 1.358836323820215E-7 -1.131084295469434E-8 4.230991587983028E-8 -4.142758935281455E-11
i 1.15743299739548E-15 -1.942029125251118E-15 -2.283339454628401E-11 3.635420937336987E-11 -4.142758935281455E-11 3.955477124555185E-11

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 17.0   n/a MPO440441  

305912 (2009 FH55)          Discovered 2009-Mar-31 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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