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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03830187205022276 4.7015e-08  
a 5.162119269214246 9.9529e-08 au
q 4.964400437456812 2.9035e-07 au
i 27.42414642970271 5.2214e-06 deg
node 93.25376659836253 1.1209e-05 deg
peri 195.7013194084579 0.0001077 deg
M 256.066791617947 0.00011221 deg
tp 2459837.279596531604
(2022-Sep-14.77959653)		 0.0013452 TDB
period 4283.911385807474
11.73		 0.0001239
3.392e-07		 d
yr
n .08403535170981218 2.4304e-09 deg/d
Q 5.35983810097168 1.0334e-07 au
   Orbit Determination Parameters
   # obs. used (total)      1670  
   data-arc span      25550 days (69.95 yr)  
   first obs. used      1949-05-29  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41687  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:52:34  

Additional Information
 Earth MOID = 3.95149 au 
 Jupiter MOID = .19915 au 
 T_jup = 2.775 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456849.5 (2014-Jul-11.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03666958639738064 4.6869e-08  
q 4.983026335300843 2.9019e-07 au
tp 2455564.593198899886
(2011-Jan-03.09319890)		 0.0013758 TDB
node 93.24295861695425 1.1211e-05 deg
peri 197.0598177728351 0.0001125 deg
i 27.40580390017171 5.2178e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1670  
   data-arc span      25550 days (69.95 yr)  
   first obs. used      1949-05-29  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41687  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:52:34  

Additional Information
 Jupiter MOID = .19915 au 
 T_jup = 2.775 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.196736281989533E-15 -1.291096249492485E-14 -2.970285192665256E-12 -4.053138617822875E-15 -3.087898678974853E-13 2.392692281394597E-15
q -1.291096249492485E-14 8.420962810795292E-14 4.347210663757217E-11 2.344830520351055E-14 4.178695674807242E-12 -4.271969913806214E-15
tp -2.970285192665256E-12 4.347210663757217E-11 1.892923016929744E-6 -2.14997687554604E-10 1.540376886976359E-7 1.300509478568649E-10
node -4.053138617822875E-15 2.344830520351055E-14 -2.14997687554604E-10 1.256960196922596E-10 -1.286655564329501E-10 -6.649394307846496E-12
peri -3.087898678974853E-13 4.178695674807242E-12 1.540376886976359E-7 -1.286655564329501E-10 1.265697727644769E-8 1.661903184955558E-11
i 2.392692281394597E-15 -4.271969913806214E-15 1.300509478568649E-10 -6.649394307846496E-12 1.661903184955558E-11 2.722530317843885E-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 9.8   n/a MPO279875  
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-January); 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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