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48181 (2001 HW32)
Classification: Main-belt Asteroid          SPK-ID: 2048181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1038412190578817 4.0452e-08  
a 2.760181846921836 1.5021e-08 au
q 2.473561199116037 1.1428e-07 au
i 3.447888056080349 4.7257e-06 deg
node 84.13725603122681 8.0718e-05 deg
peri 194.7218416040764 8.4808e-05 deg
M 5.62783128053354 2.4494e-05 deg
tp 2458974.315545054339
(2020-May-04.81554505)
0.00011402 TDB
period 1674.962043201865
4.59
1.3673e-05
3.743e-08
d
yr
n .214930243620221 1.7545e-09 deg/d
Q 3.046802494727634 1.6581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1021  
   data-arc span      7939 days (21.74 yr)  
   first obs. used      1998-11-11  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58324  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 04:32:50  

Additional Information
 Earth MOID = 1.45731 au 
 Jupiter MOID = 2.05529 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456629.5 (2013-Dec-03.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015600302942672 4.0479e-08  
q 2.479994910884626 1.1369e-07 au
tp 2457301.170508090492
(2015-Oct-05.67050809)
0.00012124 TDB
node 84.16010123921509 8.0654e-05 deg
peri 194.6837389416216 8.4949e-05 deg
i 3.448932591031249 4.7274e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1021  
   data-arc span      7939 days (21.74 yr)  
   first obs. used      1998-11-11  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58324  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 04:32:50  

Additional Information
 Jupiter MOID = 2.05529 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.638526396086033E-15 -4.569504946396133E-15 -2.247869118307112E-14 -3.670879763940602E-15 2.139782143395733E-14 -3.059863228900091E-17
q -4.569504946396133E-15 1.292634991851208E-14 -5.644313694528086E-13 8.40320621927893E-15 -2.121140784629526E-13 9.400773235963016E-17
tp -2.247869118307112E-14 -5.644313694528086E-13 1.469955112036744E-8 1.368526204568678E-11 3.257046162290961E-9 1.403012987859803E-12
node -3.670879763940602E-15 8.40320621927893E-15 1.368526204568678E-11 6.505056173537791E-9 -6.490291986694612E-9 -5.423273064799618E-11
peri 2.139782143395733E-14 -2.121140784629526E-13 3.257046162290961E-9 -6.490291986694612E-9 7.216399664946316E-9 5.444830409894965E-11
i -3.059863228900091E-17 9.400773235963016E-17 1.403012987859803E-12 -5.423273064799618E-11 5.444830409894965E-11 2.234823702377367E-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 14.7   n/a MPO474359  

48181 (2001 HW32)          Discovered 2001-Apr-24 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1918-Jan-29 01:28 00:02 Europ 0.015772441034366 0.0157551740730305 0.0157897159722657 3.66803649492088 3.66803631120819 2421622.560870936 2.41558165583028 1026.77562241011 53.8677317490811 -33.1056205862568 23979.8441212322 T 17 CATAB v2.0f-lin.ifort 2020-Aug-25 04:33:01 2020-Aug-25 04:33

Alternate Designations
 2001 HW32 = 2000 BW17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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