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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1020388648376176 5.3684e-08  
a 5.192599885221885 9.3193e-08 au
q 4.6627528873779 3.3396e-07 au
i 39.28293416541217 5.2187e-06 deg
node 131.3178636085476 7.5765e-06 deg
peri 273.5622546488902 3.2719e-05 deg
M 304.7456527371286 3.5703e-05 deg
tp 2459663.845317798793
(2022-Mar-25.34531780)
0.00043399 TDB
period 4321.909971562223
11.83
0.00011635
3.185e-07
d
yr
n .0832965060282994 2.2424e-09 deg/d
Q 5.722446883065869 1.027e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1792  
   data-arc span      15986 days (43.77 yr)  
   first obs. used      1976-10-24  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:46:21  

Additional Information
 Earth MOID = 3.91774 au 
 Jupiter MOID = .0856472 au 
 T_jup = 2.540 
[ 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 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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