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74854 (1999 TT78)
Classification: Main-belt Asteroid          SPK-ID: 2074854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1411447545828923 3.4822e-08  
a 2.390443995278297 8.9974e-09 au
q 2.053045364220593 8.376e-08 au
i 2.126874315212952 3.6461e-06 deg
node 46.03729902856762 0.00010926 deg
peri 182.1667912089152 0.00011045 deg
M 38.11170433891879 1.5495e-05 deg
tp 2459057.586861560629
(2020-Jul-27.08686156)
5.8221e-05 TDB
period 1349.945659229814
3.70
7.6216e-06
2.087e-08
d
yr
n .2666774010780487 1.5056e-09 deg/d
Q 2.727842626336 1.0267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      9626 days (26.35 yr)  
   first obs. used      1994-03-05  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58354  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:15:59  

Additional Information
 Earth MOID = 1.04182 au 
 Jupiter MOID = 2.25446 au 
 T_jup = 3.518 
[ 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 16.22   n/a E2021B10  

74854 (1999 TT78)          Discovered 1999-Oct-11 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TT78 = 1998 KF57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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