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359280 (2009 HW7)
Classification: Main-belt Asteroid          SPK-ID: 2359280
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06353968709635106 6.9607e-08  
a 2.639454068471685 2.8094e-08 au
q 2.471743982855803 1.8814e-07 au
i 15.92343337153768 7.7017e-06 deg
node 192.7609416191652 1.6562e-05 deg
peri 1.259976353551639 4.5878e-05 deg
M 230.5462743258161 4.7499e-05 deg
tp 2459563.724636382072
(2021-Dec-15.22463638)		 0.0002118 TDB
period 1566.280677064988
4.29		 2.5007e-05
6.847e-08		 d
yr
n .2298438621324209 3.6697e-09 deg/d
Q 2.807164154087567 2.9879e-08 au
   Orbit Determination Parameters
   # obs. used (total)      189  
   data-arc span      6613 days (18.11 yr)  
   first obs. used      2002-10-09  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52097  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:01:27  

Additional Information
 Earth MOID = 1.47112 au 
 Jupiter MOID = 2.14814 au 
 T_jup = 3.338 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO455593  

359280 (2009 HW7)          Discovered 2009-Apr-17 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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