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312585 (2009 HW82)
Classification: Main-belt Asteroid          SPK-ID: 2312585
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06063097486171148 4.2689e-08  
a 2.375578359120658 1.8032e-08 au
q 2.231544727346788 1.0873e-07 au
i 2.305417383271264 5.2376e-06 deg
node 181.6729217455957 0.0001092 deg
peri 66.41057857457896 0.0001191 deg
M 21.74174333910388 4.5172e-05 deg
tp 2459119.731069693769
(2020-Sep-27.23106969)
0.00016795 TDB
period 1337.372742228381
3.66
1.5227e-05
4.169e-08
d
yr
n .2691844903315096 3.0648e-09 deg/d
Q 2.519611990894528 1.9125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      192  
   data-arc span      7571 days (20.73 yr)  
   first obs. used      1999-09-03  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63255  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:31  

Additional Information
 Earth MOID = 1.21734 au 
 Jupiter MOID = 2.47642 au 
 T_jup = 3.538 
[ 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 17.71   n/a E2021B25  

312585 (2009 HW82)          Discovered 2009-Apr-26 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2009 HW82 = 2007 WP14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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