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46241 (2001 HG12)
Classification: Main-belt Asteroid          SPK-ID: 2046241
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02981675869494211 3.7089e-08  
a 2.972184698848979 1.866e-08 au
q 2.883563784886599 1.1507e-07 au
i 8.683858543017109 6.1565e-06 deg
node 212.1077984500602 3.0695e-05 deg
peri 77.45014211302048 0.00012641 deg
M 267.0847725441146 0.0001251 deg
tp 2459879.554921922419
(2022-Oct-27.05492192)
0.0006518 TDB
period 1871.596041398438
5.12
1.7625e-05
4.825e-08
d
yr
n .1923491993128023 1.8114e-09 deg/d
Q 3.060805612811357 1.9216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      10958 days (30.00 yr)  
   first obs. used      1991-06-08  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49868  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:46:53  

Additional Information
 Earth MOID = 1.88336 au 
 Jupiter MOID = 1.97596 au 
 T_jup = 3.244 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457257.5 (2015-Aug-23.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03063928720360651 3.6391e-08  
q 2.883727713443137 1.139e-07 au
tp 2457981.690283765344
(2017-Aug-16.19028377)
0.00063072 TDB
node 212.2179284231918 3.0781e-05 deg
peri 72.35462342471821 0.00012338 deg
i 8.668592584003502 6.1488e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      10958 days (30.00 yr)  
   first obs. used      1991-06-08  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49868  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:46:53  

Additional Information
 Jupiter MOID = 1.97596 au 
 T_jup = 3.244 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.324278279069353E-15 -4.092916440873177E-15 2.283050368345038E-12 1.881752691652431E-15 4.75852428612068E-13 4.123187260704943E-16
q -4.092916440873177E-15 1.297239057373291E-14 -2.79866127005748E-12 -2.172703642509202E-15 -6.887154009633453E-13 -2.229327635485499E-15
tp 2.283050368345038E-12 -2.79866127005748E-12 3.978098699102743E-7 1.479278899232456E-10 7.538029823424001E-8 3.639262449171198E-11
node 1.881752691652431E-15 -2.172703642509202E-15 1.479278899232456E-10 9.47468440055128E-10 -9.082972691382607E-10 -8.552656187397085E-11
peri 4.75852428612068E-13 -6.887154009633453E-13 7.538029823424001E-8 -9.082972691382607E-10 1.5223500563984E-8 9.152622808955782E-11
i 4.123187260704943E-16 -2.229327635485499E-15 3.639262449171198E-11 -8.552656187397085E-11 9.152622808955782E-11 3.780764458899874E-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 14.42   n/a MPCxxxxx  
diameter diameter 4.541 km 1.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.196   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46241 (2001 HG12)          Discovered 2001-Apr-18 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HG12 = 1996 HP21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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