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11869 (1989 TS2)
Classification: Jupiter Trojan          SPK-ID: 2011869
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04310301306161878 4.657e-08  
a 5.236674975070502 8.8696e-08 au
q 5.010958505220586 2.9157e-07 au
i 11.30838759718785 5.1425e-06 deg
node 149.673123241854 2.5204e-05 deg
peri 158.4196032077579 7.2628e-05 deg
M 273.2954877122775 7.069e-05 deg
tp 2460054.695249483685
(2023-Apr-20.19524948)
0.00086826 TDB
period 4377.053509680668
11.98
0.0001112
3.044e-07
d
yr
n .08224710966036697 2.0896e-09 deg/d
Q 5.462391444920417 9.252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1285  
   data-arc span      11634 days (31.85 yr)  
   first obs. used      1988-09-14  
   last obs. used      2020-07-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48458  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:44  

Additional Information
 Earth MOID = 3.99949 au 
 Jupiter MOID = .0290773 au 
 T_jup = 2.959 
[ 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 11.5   n/a MPO439171  
diameter diameter 26.794 km 0.451 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 14.020 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

11869 (1989 TS2)          Discovered 1989-Oct-03 by Bus, S. J. at Cerro Tololo
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 TS2 = 1997 NC5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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