Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
48181 (2001 HW32)
Classification: Main-belt Asteroid          SPK-ID: 2048181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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
0.00011402 TDB
period 1674.962043201865
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 
[ 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 14.7   n/a MPO474359  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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 ]
FirstGov 2020-Oct-23 02:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin