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JPL Small-Body Database Browser
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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03870094123194155 4.4285e-08  
a 5.159995917713982 9.6309e-08 au
q 4.960299218945474 2.833e-07 au
i 27.42412633628208 4.5888e-06 deg
node 93.2540245669352 1.1183e-05 deg
peri 196.3437465173762 0.00010322 deg
M 289.094606369912 0.00010729 deg
tp 2459843.736186488423
(2022-Sep-21.23618649)
0.0012815 TDB
period 4281.268484588419
11.72
0.00011986
3.282e-07
d
yr
n .08408722818854206 2.3542e-09 deg/d
Q 5.359692616482488 1.0004e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1835  
   data-arc span      25818 days (70.69 yr)  
   first obs. used      1949-05-29  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:34:26  

Additional Information
 Earth MOID = 3.9483 au 
 Jupiter MOID = .196573 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 9.9   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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