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305942 (2009 HE13)
Classification: Main-belt Asteroid          SPK-ID: 2305942
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06785126602562432 6.7307e-08  
a 2.64022884356816 2.3982e-08 au
q 2.46108597393469 1.7824e-07 au
i 5.079111845815841 6.4697e-06 deg
node 38.65402492855625 6.4229e-05 deg
peri 167.5272598297643 7.8391e-05 deg
M 205.4399083658039 4.9212e-05 deg
tp 2459673.253010008409
(2022-Apr-03.75301001)
0.00021766 TDB
period 1566.970367591597
4.29
2.135e-05
5.845e-08
d
yr
n .2297426980404952 3.1302e-09 deg/d
Q 2.81937171320163 2.5609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1998-11-16  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58913  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 07:41:34  

Additional Information
 Earth MOID = 1.45649 au 
 Jupiter MOID = 2.13843 au 
 T_jup = 3.387 
[ 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 16.7   n/a MPO450229  

305942 (2009 HE13)          Discovered 2009-Apr-17 by CSS at Catalina
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 HE13 = 2002 SX73 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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