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12054 (1997 TT9)
Classification: Jupiter Trojan          SPK-ID: 2012054
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06409572107357693 5.3441e-08  
a 5.151301917173274 1.0095e-07 au
q 4.821125506324353 3.4205e-07 au
i 10.08348270849778 6.8381e-06 deg
node 44.53289660232858 2.9826e-05 deg
peri 39.95445334074468 6.5256e-05 deg
M 308.6569205481009 5.9852e-05 deg
tp 2459809.550559040632
(2022-Aug-18.05055904)
0.00071626 TDB
period 4270.452874959324
11.69
0.00012553
3.437e-07
d
yr
n .08430019263552441 2.4781e-09 deg/d
Q 5.481478328022194 1.0742e-07 au
  Orbit Determination Parameters
   # obs. used (total)      935  
   data-arc span      12573 days (34.42 yr)  
   first obs. used      1986-09-30  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53938  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:06:42  

Additional Information
 Earth MOID = 3.84373 au 
 Jupiter MOID = .0577096 au 
 T_jup = 2.965 
[ 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 11.84   n/a E2021B10  
diameter diameter 22.617 km 0.457 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.072   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

12054 (1997 TT9)          Discovered 1997-Oct-05 by Sarounova, L. at Ondrejov
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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