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12054 (1997 TT9)
Classification: Jupiter Trojan          SPK-ID: 2012054
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06380517886242747 5.3372e-08  
a 5.149558843426207 1.0212e-07 au
q 4.820990320358803 3.4167e-07 au
i 10.08478569836359 6.8402e-06 deg
node 44.52908590736517 3.0531e-05 deg
peri 40.14544218797869 6.6423e-05 deg
M 291.5861011465232 6.0912e-05 deg
tp 2459811.639041142543
(2022-Aug-20.13904114)
0.00073099 TDB
period 4268.2855341532
11.69
0.00012697
3.476e-07
d
yr
n .08434299840519494 2.509e-09 deg/d
Q 5.478127366493611 1.0864e-07 au
  Orbit Determination Parameters
   # obs. used (total)      882  
   data-arc span      12466 days (34.13 yr)  
   first obs. used      1986-09-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54345  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:47:54  

Additional Information
 Earth MOID = 3.84406 au 
 Jupiter MOID = .0586006 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 11.8   n/a MPO302140  
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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