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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457249.5 (2015-Aug-15.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06441174112734706 5.2656e-08  
q 4.808314957250003 3.3663e-07 au
tp 2455567.358591128355
(2011-Jan-05.85859113)
0.00068349 TDB
node 44.54673071543873 2.9813e-05 deg
peri 41.38399424582553 6.5623e-05 deg
i 10.09229191005075 6.8437e-06 deg
  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
 Jupiter MOID = .0577096 au 
 T_jup = 2.965 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.77261823318255E-15 -1.728804830137318E-14 -1.395828737209348E-11 -4.199598907399292E-15 -1.291585582441302E-12 -1.304576464733182E-15
q -1.728804830137318E-14 1.133165156442977E-13 8.452767781045242E-11 2.668465929226745E-14 8.08649939767306E-12 1.031220401175312E-14
tp -1.395828737209348E-11 8.452767781045242E-11 4.67163898496366E-7 2.825651742537943E-11 3.994962333951061E-8 2.060153789311393E-11
node -4.199598907399292E-15 2.668465929226745E-14 2.825651742537943E-11 8.88802385336494E-10 -8.721564460936694E-10 -8.901129537890884E-11
peri -1.291585582441302E-12 8.08649939767306E-12 3.994962333951061E-8 -8.721564460936694E-10 4.306380315526199E-9 8.949480534220673E-11
i -1.304576464733182E-15 1.031220401175312E-14 2.060153789311393E-11 -8.901129537890884E-11 8.949480534220673E-11 4.683665835074524E-11

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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