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227744 (2006 HW22)
Classification: Main-belt Asteroid          SPK-ID: 2227744
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157284620198763 4.5726e-08  
a 3.167322216973961 3.1124e-08 au
q 2.80077288808218 1.5402e-07 au
i 10.93338191403204 7.7612e-06 deg
node 52.34584896463127 2.7417e-05 deg
peri 85.22624450487518 4.5952e-05 deg
M 278.6272675249099 3.5898e-05 deg
tp 2459665.885873617965
(2022-Mar-27.38587362)
0.00020704 TDB
period 2058.907319521988
5.64
3.0349e-05
8.309e-08
d
yr
n .1748500268013912 2.5773e-09 deg/d
Q 3.533871545865742 3.4726e-08 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      10250 days (28.06 yr)  
   first obs. used      1992-11-24  
   last obs. used      2020-12-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55903  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:40:59  

Additional Information
 Earth MOID = 1.84162 au 
 Jupiter MOID = 1.6262 au 
 T_jup = 3.165 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457770.5 (2017-Jan-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1134677740153593 4.7188e-08  
q 2.811702065004951 1.5918e-07 au
tp 2457612.169518067081
(2016-Aug-11.66951807)
0.00020414 TDB
node 52.37837921311025 2.7434e-05 deg
peri 86.39196438965884 4.6193e-05 deg
i 10.92676412153527 7.7605e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      10250 days (28.06 yr)  
   first obs. used      1992-11-24  
   last obs. used      2020-12-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55903  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:40:59  

Additional Information
 Jupiter MOID = 1.6262 au 
 T_jup = 3.165 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.226673033536086E-15 -7.404579768596622E-15 4.271397547342123E-12 1.043891514448044E-16 8.079217083516082E-13 -4.841665385950692E-15
q -7.404579768596622E-15 2.533690121491738E-14 -1.318385221408656E-11 -2.414991568653205E-15 -2.493872348844663E-12 1.706285263635381E-14
tp 4.271397547342123E-12 -1.318385221408656E-11 4.167486070401827E-8 -1.76886251003328E-11 7.61959087809885E-9 -1.800576605946712E-11
node 1.043891514448044E-16 -2.414991568653205E-15 -1.76886251003328E-11 7.525987419284249E-10 -7.421485266511086E-10 -1.001024918424223E-10
peri 8.079217083516082E-13 -2.493872348844663E-12 7.61959087809885E-9 -7.421485266511086E-10 2.133777320291945E-9 9.501259359508597E-11
i -4.841665385950692E-15 1.706285263635381E-14 -1.800576605946712E-11 -1.001024918424223E-10 9.501259359508597E-11 6.02256486628143E-11

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 15.71   n/a MPCxxxxx  

227744 (2006 HW22)          Discovered 2006-Apr-20 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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