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46841 (1998 QE19)
Classification: Main-belt Asteroid          SPK-ID: 2046841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09565656019286546 4.6104e-08  
a 2.554218729147228 1.5182e-08 au
q 2.309890951536811 1.1531e-07 au
i 11.08691848932132 3.6995e-06 deg
node 136.4431481816904 2.8299e-05 deg
peri 144.016600931949 4.576e-05 deg
M 160.2326860766279 4.1673e-05 deg
tp 2458336.857536441287
(2018-Aug-06.35753644)
0.00016855 TDB
period 1491.027160131876
4.08
1.3294e-05
3.64e-08
d
yr
n .2414442939913713 2.1527e-09 deg/d
Q 2.798546506757643 1.6635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      710  
   data-arc span      7887 days (21.59 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:35:56  

Additional Information
 Earth MOID = 1.30289 au 
 Jupiter MOID = 2.3833 au 
 T_jup = 3.406 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457114.5 (2015-Apr-02.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09654077328177016 4.5978e-08  
q 2.307251101415677 1.1497e-07 au
tp 2456847.906034624642
(2014-Jul-09.40603462)
0.00015902 TDB
node 136.5127858483839 2.8287e-05 deg
peri 144.3176398036098 4.5595e-05 deg
i 11.09001597108034 3.7007e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      710  
   data-arc span      7887 days (21.59 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:35:56  

Additional Information
 Jupiter MOID = 2.3833 au 
 T_jup = 3.406 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.113941690940244E-15 -5.250935624345898E-15 1.229497914161921E-12 -1.688472836617257E-14 1.908276660884182E-13 3.935668307030524E-15
q -5.250935624345898E-15 1.321904539428989E-14 -1.786608574285847E-12 4.301515639341168E-14 -1.862298710925789E-13 -1.124681563192354E-14
tp 1.229497914161921E-12 -1.786608574285847E-12 2.52863407933477E-8 -4.481557940053355E-11 5.724731893082456E-9 -3.483916634335939E-11
node -1.688472836617257E-14 4.301515639341168E-14 -4.481557940053355E-11 8.001669572468294E-10 -7.940882611565916E-10 2.536369046267311E-12
peri 1.908276660884182E-13 -1.862298710925789E-13 5.724731893082456E-9 -7.940882611565916E-10 2.078867476961118E-9 -1.054237903816828E-11
i 3.935668307030524E-15 -1.124681563192354E-14 -3.483916634335939E-11 2.536369046267311E-12 -1.054237903816828E-11 1.369494920363693E-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 15.4   n/a MPO449297  
diameter diameter 2.410 km 0.425 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46841 (1998 QE19)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 QE19 = 2002 NG20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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