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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06409572115622575 5.3442e-08  
a 5.151301916344668 1.0099e-07 au
q 4.821125505123109 3.4208e-07 au
i 10.08348269063864 6.8383e-06 deg
node 44.53289691209627 2.9845e-05 deg
peri 39.95445186780921 6.5287e-05 deg
M 308.6569218584705 5.9886e-05 deg
tp 2459809.550543349592
(2022-Aug-18.05054335)		 0.00071668 TDB
period 4270.452873928945
11.69		 0.00012558
3.438e-07		 d
yr
n .08430019265586441 2.479e-09 deg/d
Q 5.481478327566228 1.0746e-07 au
   Orbit Determination Parameters
   # obs. used (total)      929  
   data-arc span      12523 days (34.29 yr)  
   first obs. used      1986-09-30  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54034  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:03:49  

Additional Information
 Earth MOID = 3.84373 au 
 Jupiter MOID = .0577095 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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