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46245 (2001 HU20)
Classification: Main-belt Asteroid          SPK-ID: 2046245
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111501000686949 3.8137e-08  
a 3.090966096845092 1.6871e-08 au
q 2.746320283957432 1.1666e-07 au
i 9.374252163511372 4.2736e-06 deg
node 240.0976977669556 2.5053e-05 deg
peri 109.1467166105252 3.1167e-05 deg
M 85.7657040713564 1.8384e-05 deg
tp 2458527.620000790612
(2019-Feb-13.12000079)
0.0001011 TDB
period 1984.905290041621
5.43
1.6251e-05
4.449e-08
d
yr
n .1813688551318492 1.4849e-09 deg/d
Q 3.435611909732753 1.8752e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1366  
   data-arc span      9927 days (27.18 yr)  
   first obs. used      1992-11-24  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:24:00  

Additional Information
 Earth MOID = 1.75924 au 
 Jupiter MOID = 2.04126 au 
 T_jup = 3.195 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456885.5 (2014-Aug-16.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .112310643606617 3.8248e-08  
q 2.741802838642898 1.1686e-07 au
tp 2456526.386884602157
(2013-Aug-21.88688460)
9.9521e-05 TDB
node 240.5243302423786 2.5185e-05 deg
peri 106.0083453181279 3.1072e-05 deg
i 9.348633357432913 4.2638e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1366  
   data-arc span      9927 days (27.18 yr)  
   first obs. used      1992-11-24  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:24:00  

Additional Information
 Jupiter MOID = 2.04126 au 
 T_jup = 3.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.462895008521782E-15 -4.434286865080035E-15 4.440179761383388E-13 4.832927616590411E-15 6.687996056884715E-14 -9.760803522003003E-16
q -4.434286865080035E-15 1.365676510284549E-14 -1.434102262712629E-12 -1.568338733869685E-14 -2.101477531436607E-13 4.198835981692821E-15
tp 4.440179761383388E-13 -1.434102262712629E-12 9.904421335685625E-9 7.620067866447112E-12 1.832647491724223E-9 3.271299488016017E-12
node 4.832927616590411E-15 -1.568338733869685E-14 7.620067866447112E-12 6.342989870949548E-10 -6.243277559473687E-10 -1.58668371938305E-11
peri 6.687996056884715E-14 -2.101477531436607E-13 1.832647491724223E-9 -6.243277559473687E-10 9.654740551329258E-10 1.613217050626265E-11
i -9.760803522003003E-16 4.198835981692821E-15 3.271299488016017E-12 -1.58668371938305E-11 1.613217050626265E-11 1.818027864809396E-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 13.7   n/a MPO452802  
diameter diameter 5.925 km 0.854 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.241   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46245 (2001 HU20)          Discovered 2001-Apr-21 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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