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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03880847624299789 2.2491e-08  
a 5.158935514024215 8.5953e-08 au
q 4.958725087689048 1.8158e-07 au
i 27.42505882942073 2.0901e-06 deg
node 93.25157669197309 3.052e-06 deg
peri 196.7611356432591 3.3915e-05 deg
M 305.5237333992196 3.7725e-05 deg
tp 2459848.154536118440
(2022-Sep-25.65453612)
0.00045255 TDB
period 4279.948820855837
11.72
0.00010696
2.928e-07
d
yr
n .08411315533628574 2.1021e-09 deg/d
Q 5.359145940359381 8.9288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2359  
   data-arc span      26227 days (71.81 yr)  
   first obs. used      1949-05-29  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37365  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:56:33  

Additional Information
 Earth MOID = 3.94509 au 
 Jupiter MOID = .196182 au 
 T_jup = 2.775 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.93   n/a MPCxxxxx  
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. 2020-October); 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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