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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03870094481717359 4.3558e-08  
a 5.159995929656882 9.1705e-08 au
q 4.960299211926391 2.8296e-07 au
i 27.42412828490626 4.0856e-06 deg
node 93.25402813187168 1.0794e-05 deg
peri 196.3437652560867 8.7585e-05 deg
M 289.0945826720329 8.968e-05 deg
tp 2459843.736471240905
(2022-Sep-21.23647124)
0.0010683 TDB
period 4281.268499452025
11.72
0.00011413
3.125e-07
d
yr
n .08408722789661001 2.2416e-09 deg/d
Q 5.359692647387374 9.5254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2210  
   data-arc span      26000 days (71.18 yr)  
   first obs. used      1949-05-29  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:04:59  

Additional Information
 Earth MOID = 3.9483 au 
 Jupiter MOID = .196573 au 
 T_jup = 2.775 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457485.5 (2016-Apr-07.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03684808618229408 4.3723e-08  
q 4.978467975210521 2.8468e-07 au
tp 2455550.182078328236
(2010-Dec-19.68207833)
0.0011159 TDB
node 93.23616986585979 1.0793e-05 deg
peri 195.7687454820019 9.1678e-05 deg
i 27.41329100181986 4.0842e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2210  
   data-arc span      26000 days (71.18 yr)  
   first obs. used      1949-05-29  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:04:59  

Additional Information
 Jupiter MOID = .196573 au 
 T_jup = 2.775 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.911695344603483E-15 -1.20103679182437E-14 -1.35755811795351E-11 -3.864158308563448E-15 -1.157695419393227E-12 -1.399507696421052E-15
q -1.20103679182437E-14 8.104384753818345E-14 6.841656010447731E-11 2.901744178580022E-14 6.154486588254686E-12 1.225863360158488E-14
tp -1.35755811795351E-11 6.841656010447731E-11 1.245241181996989E-6 -6.033579970345187E-11 1.016053624258399E-7 1.195956798477747E-10
node -3.864158308563448E-15 2.901744178580022E-14 -6.033579970345187E-11 1.164850553225095E-10 -1.078852525652407E-10 -1.180762229910151E-11
peri -1.157695419393227E-12 6.154486588254686E-12 1.016053624258399E-7 -1.078852525652407E-10 8.404839887624399E-9 2.046453559073211E-11
i -1.399507696421052E-15 1.225863360158488E-14 1.195956798477747E-10 -1.180762229910151E-11 2.046453559073211E-11 1.668067312012298E-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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