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212788 (2007 TK221)
Classification: Main-belt Asteroid          SPK-ID: 2212788
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777134359949397 8.9119e-08  
a 2.461905085054914 1.7339e-08 au
q 2.024391473296391 2.1074e-07 au
i 1.397740228705119 8.0839e-06 deg
node 28.1285207042857 0.00016447 deg
peri 21.72016464562889 0.00016645 deg
M 317.1484538783664 1.8007e-05 deg
tp 2458768.445890093255
(2019-Oct-11.94589009)
6.9857e-05 TDB
period 1410.929730795598
3.86
1.4905e-05
4.081e-08
d
yr
n .2551509066273644 2.6954e-09 deg/d
Q 2.899418696813437 2.042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      357  
   data-arc span      6883 days (18.84 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5357  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 16:53:50  

Additional Information
 Earth MOID = 1.03439 au 
 Jupiter MOID = 2.4729 au 
 T_jup = 3.467 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457039.5 (2015-Jan-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1767853162807317 8.9467e-08  
q 2.027517258831498 2.1157e-07 au
tp 2457353.980699032917
(2015-Nov-27.48069903)
7.8222e-05 TDB
node 28.1638076199046 0.000164 deg
peri 21.07448079228678 0.00016602 deg
i 1.40146615310296 8.0826e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      357  
   data-arc span      6883 days (18.84 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5357  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 16:53:50  

Additional Information
 Jupiter MOID = 2.4729 au 
 T_jup = 3.467 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.004324166266678E-15 -1.890267625003384E-14 -4.850723812145611E-12 3.162475395007827E-14 -1.652032905188073E-12 -3.46829220828556E-15
q -1.890267625003384E-14 4.47621301375295E-14 1.133974146971955E-11 -7.578049293767098E-14 3.857255629772718E-12 8.284667755817658E-15
tp -4.850723812145611E-12 1.133974146971955E-11 6.118724078713555E-9 -1.771963762505202E-11 2.025489887748571E-9 1.791383931797565E-12
node 3.162475395007827E-14 -7.578049293767098E-14 -1.771963762505202E-11 2.689518066411804E-8 -2.689216906565527E-8 5.607790936746695E-12
peri -1.652032905188073E-12 3.857255629772718E-12 2.025489887748571E-9 -2.689216906565527E-8 2.756229674397621E-8 -5.017090988278117E-12
i -3.46829220828556E-15 8.284667755817658E-15 1.791383931797565E-12 5.607790936746695E-12 -5.017090988278117E-12 6.532821165532239E-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 17.4   n/a MPO352310  

212788 (2007 TK221)          Discovered 2007-Oct-09 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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