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JPL Small-Body Database Browser
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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 ]

[ 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 .1410087674776133 3.5337e-08  
a 2.390431828895508 1.1501e-08 au
q 2.053359982963696 8.4371e-08 au
i 2.127085461394755 3.8902e-06 deg
node 46.04889851959891 0.00014598 deg
peri 181.9941722825901 0.00014745 deg
M 238.2302735320039 2.3041e-05 deg
tp 2459057.114607536030
(2020-Jul-26.61460754)
8.7626e-05 TDB
period 1349.93535323555
3.70
9.7421e-06
2.667e-08
d
yr
n .266679437009443 1.9245e-09 deg/d
Q 2.727503674827321 1.3122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      584  
   data-arc span      9106 days (24.93 yr)  
   first obs. used      1994-03-05  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63326  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:41:14  

Additional Information
 Earth MOID = 1.04345 au 
 Jupiter MOID = 2.2563 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 16.1   n/a MPO379111  

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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