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85498 (1997 TQ12)
Classification: Jupiter Trojan          SPK-ID: 2085498
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06115478179352327 6.3717e-08  
a 5.261775695317217 1.5186e-07 au
q 4.939992950823629 4.1677e-07 au
i 3.842579948030213 6.3408e-06 deg
node 236.645447119886 0.00010357 deg
peri 179.5605278625404 0.00012007 deg
M 295.9569790897723 6.4568e-05 deg
tp 2459784.771135381535
(2022-Jul-24.27113538)
0.00080807 TDB
period 4408.561693757689
12.07
0.00019085
5.225e-07
d
yr
n .08165928595481441 3.5352e-09 deg/d
Q 5.583558439810806 1.6115e-07 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      8664 days (23.72 yr)  
   first obs. used      1996-09-11  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:17:01  

Additional Information
 Earth MOID = 3.95179 au 
 Jupiter MOID = .102157 au 
 T_jup = 2.992 
[ 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 12.9   n/a MPO257390  
diameter diameter 11.746 km 1.168 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.089   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

85498 (1997 TQ12)          Discovered 1997-Oct-02 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1997 TQ12 = 1996 RZ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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