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312090 (2007 TW99)
Classification: Main-belt Asteroid          SPK-ID: 2312090
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1545878960895431 4.7293e-08  
a 2.38320888352447 1.4533e-08 au
q 2.014793636278513 1.0725e-07 au
i 3.127478341744452 5.9582e-06 deg
node 170.8721646327839 9.7694e-05 deg
peri 311.716785557937 0.00010209 deg
M 144.2170712276053 2.9132e-05 deg
tp 2458662.161101794813
(2019-Jun-27.66110179)
0.00010607 TDB
period 1343.821516441742
3.68
1.2293e-05
3.366e-08
d
yr
n .2678927190816465 2.4505e-09 deg/d
Q 2.751624130770427 1.678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6124 days (16.77 yr)  
   first obs. used      2003-09-18  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57461  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:48:40  

Additional Information
 Earth MOID = 1.03194 au 
 Jupiter MOID = 2.31891 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457747.5 (2016-Dec-25.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554583109033159 4.7273e-08  
q 2.011708747005332 1.0724e-07 au
tp 2457319.490881008233
(2015-Oct-23.99088101)
9.9615e-05 TDB
node 170.9046684455815 9.7714e-05 deg
peri 311.6878555372181 0.00010205 deg
i 3.127608870686868 5.96e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6124 days (16.77 yr)  
   first obs. used      2003-09-18  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57461  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:48:40  

Additional Information
 Jupiter MOID = 2.31891 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.234765918720447E-15 -5.044498968948168E-15 2.976599958510569E-13 -2.644584817892497E-14 -1.787507696273542E-15 -1.266742633543111E-15
q -5.044498968948168E-15 1.149981237784335E-14 -2.116320849582165E-13 5.838089799534624E-14 1.47257412897605E-13 2.507127796832724E-15
tp 2.976599958510569E-13 -2.116320849582165E-13 9.923069101784074E-9 -2.69615908362013E-11 2.9538358683648E-9 -7.938937017105248E-12
node -2.644584817892497E-14 5.838089799534624E-14 -2.69615908362013E-11 9.548042343256301E-9 -9.540097443969983E-9 2.892563647537517E-10
peri -1.787507696273542E-15 1.47257412897605E-13 2.9538358683648E-9 -9.540097443969983E-9 1.041436597685724E-8 -2.91126226521729E-10
i -1.266742633543111E-15 2.507127796832724E-15 -7.938937017105248E-12 2.892563647537517E-10 -2.91126226521729E-10 3.552178693682735E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.85   n/a E2021B25  

312090 (2007 TW99)          Discovered 2007-Oct-08 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

Alternate Designations
 2007 TW99 = 2003 SB348 = 2005 ET320 = 2005 EW212 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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