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181919 (1999 TZ76)
Classification: Main-belt Asteroid          SPK-ID: 2181919
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09981734117546877 3.8546e-08  
a 2.329319577268158 1.142e-08 au
q 2.096813090317283 8.783e-08 au
i 4.394847372694742 4.8395e-06 deg
node 224.8791787272462 4.8581e-05 deg
peri 291.9249413372046 5.3887e-05 deg
M 230.4951900631746 2.4651e-05 deg
tp 2459667.616749530252
(2022-Mar-29.11674953)
9.0426e-05 TDB
period 1298.500263526296
3.56
9.5489e-06
2.614e-08
d
yr
n .2772429163952262 2.0388e-09 deg/d
Q 2.561826064219033 1.2559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-10-03  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56736  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:36  

Additional Information
 Earth MOID = 1.11026 au 
 Jupiter MOID = 2.43351 au 
 T_jup = 3.561 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457657.5 (2016-Sep-26.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09877993505561229 3.8457e-08  
q 2.099989855876136 8.7533e-08 au
tp 2457068.206915472969
(2015-Feb-14.70691547)
8.4764e-05 TDB
node 224.9354167255355 4.8535e-05 deg
peri 291.5796699298504 5.4002e-05 deg
i 4.395981731030998 4.8415e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-10-03  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56736  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:36  

Additional Information
 Jupiter MOID = 2.43351 au 
 T_jup = 3.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.478904197746037E-15 -3.344125317000161E-15 1.203274029594731E-12 3.371359697106402E-15 3.326276665383693E-13 -7.95168021656238E-16
q -3.344125317000161E-15 7.661967653201459E-15 -2.565810750537925E-12 -7.134788104635364E-15 -6.994568456809404E-13 2.036356859708309E-15
tp 1.203274029594731E-12 -2.565810750537925E-12 7.184975023290137E-9 1.603225439380292E-11 2.016003370935113E-9 -5.585975205280936E-13
node 3.371359697106402E-15 -7.134788104635364E-15 1.603225439380292E-11 2.355620476908158E-9 -2.34373911566033E-9 -4.113178236007299E-11
peri 3.326276665383693E-13 -6.994568456809404E-13 2.016003370935113E-9 -2.34373911566033E-9 2.916268032863293E-9 4.089501319984969E-11
i -7.95168021656238E-16 2.036356859708309E-15 -5.585975205280936E-13 -4.113178236007299E-11 4.089501319984969E-11 2.344017645029978E-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 16.88   n/a MPCxxxxx  

181919 (1999 TZ76)          Discovered 1999-Oct-10 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

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