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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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03870094483454117 4.3555e-08  
a 5.159995928989245 9.1609e-08 au
q 4.960299211194975 2.8294e-07 au
i 27.42412812441713 4.0765e-06 deg
node 93.25402770031621 1.0773e-05 deg
peri 196.3437644265219 8.7187e-05 deg
M 289.0945839752636 8.9228e-05 deg
tp 2459843.736455578690
(2022-Sep-21.23645558)		 0.0010629 TDB
period 4281.268498621112
11.72		 0.00011401
3.121e-07		 d
yr
n .08408722791292973 2.2393e-09 deg/d
Q 5.359692646783515 9.5154e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2255  
   data-arc span      26055 days (71.33 yr)  
   first obs. used      1949-05-29  
   last obs. used      2020-09-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37388  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:44:04  

Additional Information
 Earth MOID = 3.9483 au 
 Jupiter MOID = .196573 au 
 T_jup = 2.775 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457502.5 (2016-Apr-24.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03686230506466542 4.3728e-08  
q 4.978306319759751 2.8468e-07 au
tp 2455549.916951215752
(2010-Dec-19.41695122)		 0.0011102 TDB
node 93.23616924156349 1.0771e-05 deg
peri 195.743543762387 9.1218e-05 deg
i 27.41355686467658 4.0752e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2255  
   data-arc span      26055 days (71.33 yr)  
   first obs. used      1949-05-29  
   last obs. used      2020-09-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37388  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:44:04  

Additional Information
 Jupiter MOID = .196573 au 
 T_jup = 2.775 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.912134935286258E-15 -1.201352416214332E-14 -1.361906371276508E-11 -3.679633320679173E-15 -1.161387529716115E-12 -1.331400007432348E-15
q -1.201352416214332E-14 8.104525681864347E-14 6.817538804501606E-11 2.779245319855846E-14 6.135831657599241E-12 1.169477794572765E-14
tp -1.361906371276508E-11 6.817538804501606E-11 1.232438979812279E-6 -6.691756423395222E-11 1.005692232908439E-7 1.14738087846667E-10
node -3.679633320679173E-15 2.779245319855846E-14 -6.691756423395222E-11 1.160206056166478E-10 -1.080197931432939E-10 -1.199145177968654E-11
peri -1.161387529716115E-12 6.135831657599241E-12 1.005692232908439E-7 -1.080197931432939E-10 8.320640773015673E-9 2.022658728620044E-11
i -1.331400007432348E-15 1.169477794572765E-14 1.14738087846667E-10 -1.199145177968654E-11 2.022658728620044E-11 1.66071931455262E-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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