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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06060751462125795 6.4384e-08  
a 5.262859253542475 1.5821e-07 au
q 4.943890434383777 4.1675e-07 au
i 3.842535414015356 6.476e-06 deg
node 236.6528680706088 0.00010378 deg
peri 179.2749535265627 0.00012112 deg
M 263.5104096157924 6.6127e-05 deg
tp 2459782.476990894028
(2022-Jul-21.97699089)
0.00083819 TDB
period 4409.923547478272
12.07
0.00019886
5.444e-07
d
yr
n .0816340682835327 3.6811e-09 deg/d
Q 5.581828072701173 1.678e-07 au
  Orbit Determination Parameters
   # obs. used (total)      355  
   data-arc span      8380 days (22.94 yr)  
   first obs. used      1996-09-11  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56295  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:11:46  

Additional Information
 Earth MOID = 3.95522 au 
 Jupiter MOID = .097999 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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