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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456902.5 (2014-Sep-02.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .141558418856775 3.5238e-08  
q 2.051460370297021 8.4147e-08 au
tp 2456358.129539761095
(2013-Mar-06.62953976)
8.1937e-05 TDB
node 46.06075608341138 0.00014602 deg
peri 182.0912091330988 0.00014749 deg
i 2.12746947360922 3.8895e-06 deg
  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
 Jupiter MOID = 2.2563 au 
 T_jup = 3.518 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.241735795426268E-15 -2.945008143517705E-15 -3.499978527317284E-13 -5.142760830895422E-15 -5.247841365740957E-14 1.18000558285227E-18
q -2.945008143517705E-15 7.080736015778803E-15 9.739673223761112E-13 1.145462256630444E-14 1.702950721515007E-13 7.595855687036905E-17
tp -3.499978527317284E-13 9.739673223761112E-13 6.713598327956039E-9 9.332133326611675E-12 1.735614909254956E-9 1.440039332300891E-12
node -5.142760830895422E-15 1.145462256630444E-14 9.332133326611675E-12 2.132038998743641E-8 -2.130337866433536E-8 -2.356717768707564E-11
peri -5.247841365740957E-14 1.702950721515007E-13 1.735614909254956E-9 -2.130337866433536E-8 2.175185069636365E-8 2.393702202105773E-11
i 1.18000558285227E-18 7.595855687036905E-17 1.440039332300891E-12 -2.356717768707564E-11 2.393702202105773E-11 1.512812900704567E-11

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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