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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06139470826184139 6.1566e-08  
a 5.261434381530055 1.2761e-07 au
q 4.938410152637196 4.1621e-07 au
i 3.842662789934765 5.1342e-06 deg
node 236.6437660475927 9.7984e-05 deg
peri 179.7826017509114 0.00011225 deg
M 312.1060412964887 5.5834e-05 deg
tp 2459786.952577166297
(2022-Jul-26.45257717)
0.00069082 TDB
period 4408.13274774025
12.07
0.00016038
4.391e-07
d
yr
n .08166723204616456 2.9712e-09 deg/d
Q 5.584458610422915 1.3545e-07 au
  Orbit Determination Parameters
   # obs. used (total)      470  
   data-arc span      8829 days (24.17 yr)  
   first obs. used      1996-09-11  
   last obs. used      2020-11-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52063  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:13:19  

Additional Information
 Earth MOID = 3.9495 au 
 Jupiter MOID = .102797 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 12.95   n/a E2021B10  
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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