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216477 (1999 TD25)
Classification: Main-belt Asteroid          SPK-ID: 2216477
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2008519461022781 4.4555e-08  
a 2.306462940935658 7.6256e-09 au
q 1.843205370635947 1.0296e-07 au
i 1.343607477157351 4.2836e-06 deg
node 283.7631746092738 0.00026893 deg
peri 140.5691764632225 0.00026945 deg
M 44.0845011049739 1.6285e-05 deg
tp 2459239.824323745503
(2021-Jan-25.32432375)
5.7749e-05 TDB
period 1279.43476818104
3.50
6.3451e-06
1.737e-08
d
yr
n .2813742513124046 1.3954e-09 deg/d
Q 2.769720511235368 9.1572e-09 au
  Orbit Determination Parameters
   # obs. used (total)      365  
   data-arc span      7806 days (21.37 yr)  
   first obs. used      1999-09-30  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50405  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:54:58  

Additional Information
 Earth MOID = .856568 au 
 Jupiter MOID = 2.54545 au 
 T_jup = 3.560 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457342.5 (2015-Nov-16.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2018108573189648 4.4952e-08  
q 1.840343487848136 1.0405e-07 au
tp 2457958.184135405858
(2017-Jul-23.68413541)
5.6136e-05 TDB
node 283.8670946781091 0.00026957 deg
peri 140.0129832749051 0.00027006 deg
i 1.341897458297416 4.2806e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      365  
   data-arc span      7806 days (21.37 yr)  
   first obs. used      1999-09-30  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50405  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:54:58  

Additional Information
 Jupiter MOID = 2.54545 au 
 T_jup = 3.560 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.020658413908822E-15 -4.669035647235419E-15 -9.995240527552769E-13 -3.762463615240066E-14 -2.488943707397323E-13 -2.451547298805638E-15
q -4.669035647235419E-15 1.082550917484767E-14 2.341479494254484E-12 8.725753648568283E-14 5.779440324872518E-13 5.715347683430865E-15
tp -9.995240527552769E-13 2.341479494254484E-12 3.151290380314547E-9 9.907357678283794E-11 9.599484387311598E-10 2.876988430065954E-12
node -3.762463615240066E-14 8.725753648568283E-14 9.907357678283794E-11 7.266693966555249E-8 -7.261470997494684E-8 2.185030579934521E-12
peri -2.488943707397323E-13 5.779440324872518E-13 9.599484387311598E-10 -7.261470997494684E-8 7.293491398604712E-8 -1.275221444362222E-12
i -2.451547298805638E-15 5.715347683430865E-15 2.876988430065954E-12 2.185030579934521E-12 -1.275221444362222E-12 1.832319040404943E-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 17.38   n/a E2021B55  

216477 (1999 TD25)          Discovered 1999-Oct-03 by LINEAR at Socorro
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

[ show close-approach data ]
Alternate Designations
 1999 TD25 = 2004 CO84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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