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34746 (2001 QE91)
Classification: Jupiter Trojan          SPK-ID: 2034746
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03870094463371399 4.3601e-08  
a 5.159995927845281 9.2066e-08 au
q 4.960299211131551 2.8298e-07 au
i 27.42412779582381 4.1372e-06 deg
node 93.25402720910375 1.0874e-05 deg
peri 196.3437628817408 8.9002e-05 deg
M 289.0945861142572 9.1296e-05 deg
tp 2459843.736429860480
(2022-Sep-21.23642986)
0.0010879 TDB
period 4281.268497197386
11.72
0.00011458
3.137e-07
d
yr
n .08408722794089275 2.2505e-09 deg/d
Q 5.359692644559011 9.5629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2101  
   data-arc span      25952 days (71.05 yr)  
   first obs. used      1949-05-29  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:25:14  

Additional Information
 Earth MOID = 3.9483 au 
 Jupiter MOID = .196573 au 
 T_jup = 2.775 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457420.5 (2016-Feb-02.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03678702250367518 4.3731e-08  
q 4.979165252037895 2.8462e-07 au
tp 2455551.188916467364
(2010-Dec-20.68891647)
0.0011368 TDB
node 93.23632126123238 1.0873e-05 deg
peri 195.8668115482069 9.3348e-05 deg
i 27.41211736020005 4.1356e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2101  
   data-arc span      25952 days (71.05 yr)  
   first obs. used      1949-05-29  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:25:14  

Additional Information
 Jupiter MOID = .196573 au 
 T_jup = 2.775 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.912374762545323E-15 -1.200129285465321E-14 -1.318084756150895E-11 -4.297120491602376E-15 -1.12528604764524E-12 -1.539760140292396E-15
q -1.200129285465321E-14 8.100685711915617E-14 6.811559877767576E-11 3.191214649518272E-14 6.127729831496355E-12 1.373331969229445E-14
tp -1.318084756150895E-11 6.811559877767576E-11 1.292338596162727E-6 -4.443605586588688E-11 1.054123084515987E-7 1.364910136612022E-10
node -4.297120491602376E-15 3.191214649518272E-14 -4.443605586588688E-11 1.18217054667711E-10 -1.080995693432805E-10 -1.095601752436244E-11
peri -1.12528604764524E-12 6.127729831496355E-12 1.054123084515987E-7 -1.080995693432805E-10 8.713845431840448E-9 2.110088285315939E-11
i -1.539760140292396E-15 1.373331969229445E-14 1.364910136612022E-10 -1.095601752436244E-11 2.110088285315939E-11 1.710315623578087E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.9   n/a MPO474201  
diameter diameter 61.684 km 0.917 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 19.633 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Molnar, L.A.; Haegert, M.J.; Hoogenboom, K.M. (2008) Minor Planet Bull. 35, 82-84.]
geometric albedo albedo 0.061   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

34746 (2001 QE91)          Discovered 2001-Aug-22 by LINEAR at Socorro
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 QE91 = 1949 KS = 1990 VD1 = 1991 XC5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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