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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1779204177499933 8.7561e-08  
a 2.462380897170173 1.685e-08 au
q 2.024273059286053 2.0614e-07 au
i 1.397589051559371 6.4278e-06 deg
node 28.1226397964437 0.0001589 deg
peri 21.68939823262721 0.00016091 deg
M 59.21591231892459 1.6715e-05 deg
tp 2458768.350795004975
(2019-Oct-11.85079500)
6.668e-05 TDB
period 1411.338785900962
3.86
1.4487e-05
3.966e-08
d
yr
n .2550769550134522 2.6182e-09 deg/d
Q 2.900488735054294 1.9848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      407  
   data-arc span      6946 days (19.02 yr)  
   first obs. used      2001-01-21  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:50:34  

Additional Information
 Earth MOID = 1.03474 au 
 Jupiter MOID = 2.47282 au 
 T_jup = 3.467 
[ 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 .1766338711651282 8.7908e-08  
q 2.027609800672729 2.0681e-07 au
tp 2457354.032732873386
(2015-Nov-27.53273287)
7.6459e-05 TDB
node 28.16241788976588 0.0001584 deg
peri 21.0875745647072 0.00016046 deg
i 1.401485199866158 6.4261e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      407  
   data-arc span      6946 days (19.02 yr)  
   first obs. used      2001-01-21  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:50:34  

Additional Information
 Jupiter MOID = 2.47282 au 
 T_jup = 3.467 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.727765347337918E-15 -1.815987444548249E-14 -4.578078779788319E-12 4.524333183205594E-14 -1.603068430192021E-12 -5.081817178600726E-15
q -1.815987444548249E-14 4.277075781017107E-14 1.060479867676133E-11 -1.075531147087848E-13 3.719679963077213E-12 1.209029290370031E-14
tp -4.578078779788319E-12 1.060479867676133E-11 5.84591889843059E-9 -2.06613393200301E-11 1.967083401264045E-9 2.142349755018417E-12
node 4.524333183205594E-14 -1.075531147087848E-13 -2.06613393200301E-11 2.509153845982962E-8 -2.509027615189155E-8 2.042194216891511E-10
peri -1.603068430192021E-12 3.719679963077213E-12 1.967083401264045E-9 -2.509027615189155E-8 2.574846186792122E-8 -2.034383277644801E-10
i -5.081817178600726E-15 1.209029290370031E-14 2.142349755018417E-12 2.042194216891511E-10 -2.034383277644801E-10 4.129463022375537E-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 17.2   n/a MPO503081  

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

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