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46226 (2001 HP2)
Classification: Main-belt Asteroid          SPK-ID: 2046226
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07125295262487515 3.4536e-08  
a 3.047297748822729 1.7385e-08 au
q 2.830168786691974 1.0283e-07 au
i 8.627438564715408 4.3176e-06 deg
node 218.9649898800517 2.627e-05 deg
peri 70.23135323443861 4.104e-05 deg
M 157.6947865731287 3.2393e-05 deg
tp 2458149.390186544737
(2018-Jan-30.89018654)
0.00017419 TDB
period 1942.990884494499
5.32
1.6627e-05
4.552e-08
d
yr
n .1852813633213004 1.5855e-09 deg/d
Q 3.264426710953483 1.8623e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1584  
   data-arc span      7716 days (21.13 yr)  
   first obs. used      1998-12-15  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50654  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:23:38  

Additional Information
 Earth MOID = 1.82913 au 
 Jupiter MOID = 1.85221 au 
 T_jup = 3.217 
[ 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 13.3   n/a MPO324723  
diameter diameter 6.998 km 0.239 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.208   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46226 (2001 HP2)          Discovered 2001-Apr-17 by LINEAR at Socorro
Reference: 20020822/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
1929-Jul-31 01:10 00:02 Jupiter 1.85006007308909 1.85005968519227 1.85006046098697 3.70106461918781 3.57522153605947 2425823.548762262 2.16424738312711 150.872324398662 15.2141138338559 85.8045501836082 3584957.67151976 T 38 CATAB v2.0f-lin.ifort 2020-Feb-23 08:23:50 2020-Feb-23 08:23
1977-Oct-16 18:39 < 00:01 Jupiter 1.9212087409439 1.92120823871798 1.92120924317004 3.36830110984345 3.23476310728013 2443433.277349621 0.976629886983353 64.1014832735266 21.4347738794728 79.4199904900908 4071434.36476151 T 38 CATAB v2.0f-lin.ifort 2020-Feb-23 08:23:50 2020-Feb-23 08:23
2035-Jul-12 04:53 < 00:01 Jupiter 1.90038086935223 1.90038045673699 1.90038128196747 4.02458158634772 3.91226698853932 2464520.703636481 0.536390795266491 51.4653166567793 16.1630716144802 -79.3744467698892 3673654.46039594 T 38 CATAB v2.0f-lin.ifort 2020-Feb-23 08:23:50 2020-Feb-23 08:23
2083-Sep-22 00:58 00:02 Jupiter 1.8622714694472 1.86227112098334 1.86227181791106 3.74750116979952 3.6240997532295 2482124.540389928 1.74880789634588 126.117265754848 14.8704389083352 89.8896087537349 3453335.77749179 T 38 CATAB v2.0f-lin.ifort 2020-Feb-23 08:23:50 2020-Feb-23 08:23
2131-Dec-09 00:14 00:03 Jupiter 1.91538158441796 1.91538088542023 1.91538228341755 3.35498883908588 3.22048249951061 2499733.509538968 3.06422867255287 122.61872766036 20.7160168275348 72.9061016485903 3165880.68428387 T 38 CATAB v2.0f-lin.ifort 2020-Feb-23 08:23:50 2020-Feb-23 08:23
2189-Sep-04 06:43 00:04 Jupiter 1.91333928417681 1.91333812645483 1.91334044191706 4.10886062878198 3.99966861516475 2520822.779546205 4.38881836154127 320.396218792783 16.2810795394875 -80.9464574033521 3724009.38200814 T 38 CATAB v2.0f-lin.ifort 2020-Feb-23 08:23:50 2020-Feb-23 08:23

Alternate Designations
 2001 HP2 = 1998 XY79 = 2000 EQ151 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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