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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06034481191303704 4.6455e-08  
a 2.375568163094288 2.288e-08 au
q 2.232214949105765 1.1296e-07 au
i 2.305267095403875 5.5366e-06 deg
node 181.6879612212764 0.00014235 deg
peri 66.06987368718804 0.00015088 deg
M 220.5135468904649 5.0576e-05 deg
tp 2459118.678275877085
(2020-Sep-26.17827588)
0.00018901 TDB
period 1337.364132194704
3.66
1.9321e-05
5.29e-08
d
yr
n .2691862233580437 3.8889e-09 deg/d
Q 2.518921377082812 2.4261e-08 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      7027 days (19.24 yr)  
   first obs. used      1999-09-03  
   last obs. used      2018-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6686  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:19:41  

Additional Information
 Earth MOID = 1.21939 au 
 Jupiter MOID = 2.47829 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 17.5   n/a MPO418616  

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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