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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457033.5 (2015-Jan-11.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07452620359423912 3.473e-08  
q 2.817675550759721 1.0379e-07 au
tp 2456200.783634167840
(2012-Sep-30.28363417)
0.00016515 TDB
node 219.1515287713341 2.6369e-05 deg
peri 68.86052549229497 3.9943e-05 deg
i 8.612009708545754 4.3124e-06 deg
  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
 Jupiter MOID = 1.85221 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.206187255125841E-15 -3.563776777954091E-15 5.113326264046069E-13 -3.315731950377555E-15 9.722041421156851E-14 -4.421723395687938E-17
q -3.563776777954091E-15 1.077319480917666E-14 -1.586137552731276E-12 1.087005196873361E-14 -2.825425604503513E-13 7.565197670968004E-16
tp 5.113326264046069E-13 -1.586137552731276E-12 2.727330731592816E-8 8.484644594828244E-12 4.970672271958452E-9 1.955878152145718E-13
node -3.315731950377555E-15 1.087005196873361E-14 8.484644594828244E-12 6.953085786411365E-10 -6.857289124100372E-10 -1.868317372125628E-11
peri 9.722041421156851E-14 -2.825425604503513E-13 4.970672271958452E-9 -6.857289124100372E-10 1.595409844724104E-9 1.845222275809614E-11
i -4.421723395687938E-17 7.565197670968004E-16 1.955878152145718E-13 -1.868317372125628E-11 1.845222275809614E-11 1.859636429798948E-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 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

[ show close-approach data ]
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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