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74817 (1999 TZ8)
Classification: Main-belt Asteroid          SPK-ID: 2074817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1297641531204205 3.2096e-08  
a 2.344671611988734 9.9414e-09 au
q 2.040417285913525 7.8652e-08 au
i 4.632178030234758 4.369e-06 deg
node 342.5218424749368 4.1913e-05 deg
peri 273.9665811495872 4.5315e-05 deg
M 1.69942200146453 1.7752e-05 deg
tp 2458994.309578788074
(2020-May-24.80957879)
6.4655e-05 TDB
period 1311.358588021511
3.59
8.3402e-06
2.283e-08
d
yr
n .2745244537141773 1.746e-09 deg/d
Q 2.648925938063944 1.1231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      10663 days (29.19 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:51:07  

Additional Information
 Earth MOID = 1.03195 au 
 Jupiter MOID = 2.4147 au 
 T_jup = 3.546 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO432301  

74817 (1999 TZ8)          Discovered 1999-Oct-06 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TZ8 = 1991 GY12 = 1998 FV41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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