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305971 (2009 HM75)
Classification: Main-belt Asteroid          SPK-ID: 2305971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04300233312595651 4.5514e-08  
a 2.987543536309222 3.8314e-08 au
q 2.859072193932555 1.4733e-07 au
i 10.57365288923358 5.0435e-06 deg
node 96.89994347860038 2.6811e-05 deg
peri 199.0260628802053 6.4273e-05 deg
M 343.5740290349835 5.9518e-05 deg
tp 2459086.559405399305
(2020-Aug-25.05940540)
0.00031231 TDB
period 1886.1220447627
5.16
3.6283e-05
9.934e-08
d
yr
n .1908678184424131 3.6717e-09 deg/d
Q 3.11601487868589 3.9961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      276  
   data-arc span      5528 days (15.13 yr)  
   first obs. used      2004-04-14  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59742  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:58:47  

Additional Information
 Earth MOID = 1.84477 au 
 Jupiter MOID = 2.00659 au 
 T_jup = 3.230 
[ 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 15.6   n/a MPO437358  

305971 (2009 HM75)          Discovered 2009-Apr-28 by CSS at Catalina
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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