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2146 Stentor (1976 UQ)
Classification: Jupiter Trojan          SPK-ID: 2002146
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1020388642337797 5.3703e-08  
a 5.192599890665603 9.4492e-08 au
q 4.662752895401636 3.3464e-07 au
i 39.28293435522211 5.2542e-06 deg
node 131.3178632097809 7.6856e-06 deg
peri 273.5622581582766 3.3934e-05 deg
M 304.7456488108506 3.7354e-05 deg
tp 2459663.845365978098
(2022-Mar-25.34536598)
0.00045445 TDB
period 4321.909978358605
11.83
0.00011797
3.23e-07
d
yr
n .0832965058973122 2.2737e-09 deg/d
Q 5.72244688592957 1.0413e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1719  
   data-arc span      15942 days (43.65 yr)  
   first obs. used      1976-10-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:41:26  

Additional Information
 Earth MOID = 3.91774 au 
 Jupiter MOID = .0856472 au 
 T_jup = 2.540 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456889.5 (2014-Aug-20.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101438239725212 5.3809e-08  
q 4.667647930716637 3.3647e-07 au
tp 2455348.774388767159
(2010-Jun-01.27438877)
0.00043029 TDB
node 131.3275332965239 7.687e-06 deg
peri 273.9949409355301 3.41e-05 deg
i 39.25928249102023 5.2544e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1719  
   data-arc span      15942 days (43.65 yr)  
   first obs. used      1976-10-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:41:26  

Additional Information
 Jupiter MOID = .0856472 au 
 T_jup = 2.540 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.895445545546572E-15 -1.770417501401462E-14 -4.389891644434368E-12 -2.273785276058202E-15 -3.868815655760707E-13 8.522868370884358E-15
q -1.770417501401462E-14 1.132106036627041E-13 2.639323758527556E-11 2.346548541684545E-14 2.523735188274455E-12 -4.574579614398959E-14
tp -4.389891644434368E-12 2.639323758527556E-11 1.851463525423168E-7 -8.53918710494891E-12 1.431260162067536E-8 -1.907824741680179E-11
node -2.273785276058202E-15 2.346548541684545E-14 -8.53918710494891E-12 5.90892728429782E-11 -4.56808983224836E-11 -1.641565420769572E-12
peri -3.868815655760707E-13 2.523735188274455E-12 1.431260162067536E-8 -4.56808983224836E-11 1.162808832409146E-9 -1.072281341828188E-13
i 8.522868370884358E-15 -4.574579614398959E-14 -1.907824741680179E-11 -1.641565420769572E-12 -1.072281341828188E-13 2.760854989408534E-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 10.0   n/a MPO492775  
diameter diameter 50.755 km 0.330 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 16.40 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D.; Coley, D.R.; Warner, B.D.; French, L.M. (2016) Minor Planet Bull. 43, 323-331.]
geometric albedo albedo 0.082   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

2146 Stentor (1976 UQ)          Discovered 1976-Oct-24 by West, R. M. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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