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JPL Small-Body Database Browser
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347229 (2011 HW91)
Classification: Main-belt Asteroid          SPK-ID: 2347229
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1704587272087137 5.2562e-08  
a 2.32274141386095 1.8414e-08 au
q 1.926809868819245 1.1896e-07 au
i 1.658394255212166 8.5054e-06 deg
node 156.8693830986458 0.00024718 deg
peri 119.1659746979068 0.00025013 deg
M 159.3068552614536 3.5334e-05 deg
tp 2458428.321301116601
(2018-Nov-05.82130112)
0.00012367 TDB
period 1293.003563845153
3.54
1.5376e-05
4.21e-08
d
yr
n .2784215063796318 3.3109e-09 deg/d
Q 2.718672958902656 2.1553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      7203 days (19.72 yr)  
   first obs. used      2000-02-05  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65062  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 10:33:06  

Additional Information
 Earth MOID = .91109 au 
 Jupiter MOID = 2.39565 au 
 T_jup = 3.556 
[ 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 18.4   n/a MPO450308  

347229 (2011 HW91)          Discovered 2004-Apr-28 by Spacewatch at Kitt Peak
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

[ show close-approach data ]
Alternate Designations
 2011 HW91 = 2008 OW17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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