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227944 (2007 GW38)
Classification: Main-belt Asteroid          SPK-ID: 2227944
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .04174765360781738 6.6919e-08  
a 2.576470337300595 2.4381e-08 au
q 2.468908746128153 1.7398e-07 au
i 2.560341833832812 6.7699e-06 deg
node 69.62355435578907 0.0001551 deg
peri 112.4673241026597 0.00017376 deg
M 135.008864379547 8.0848e-05 deg
tp 2458634.005196269336
(2019-May-30.50519627)
0.00033721 TDB
period 1510.553623869562
4.14
2.1442e-05
5.87e-08
d
yr
n .2383232176013676 3.3829e-09 deg/d
Q 2.684031928473036 2.5399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      9642 days (26.40 yr)  
   first obs. used      1992-10-03  
   last obs. used      2019-02-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58609  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:45  

Additional Information
 Earth MOID = 1.47119 au 
 Jupiter MOID = 2.27171 au 
 T_jup = 3.424 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456878.5 (2014-Aug-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04195522246060115 6.6172e-08  
q 2.468321900488971 1.7193e-07 au
tp 2457115.711981020764
(2015-Apr-03.21198102)
0.00033449 TDB
node 69.70067911851991 0.00015476 deg
peri 110.314365757137 0.00017375 deg
i 2.563062157476879 6.7776e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      9642 days (26.40 yr)  
   first obs. used      1992-10-03  
   last obs. used      2019-02-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58609  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:45  

Additional Information
 Jupiter MOID = 2.27171 au 
 T_jup = 3.424 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.37872230094949E-15 -1.127448709260125E-14 3.655214022094264E-12 1.001387818643154E-14 9.383757544367501E-13 -2.982068134881773E-15
q -1.127448709260125E-14 2.956132688363851E-14 -7.802049218509294E-12 -1.799236653381883E-14 -2.059744947483665E-12 7.820982998046416E-15
tp 3.655214022094264E-12 -7.802049218509294E-12 1.118808758840866E-7 2.639592588494733E-10 2.647467043456408E-8 -1.049898095851132E-11
node 1.001387818643154E-14 -1.799236653381883E-14 2.639592588494733E-10 2.394937425591789E-8 -2.386167331531442E-8 -1.542640315124384E-10
peri 9.383757544367501E-13 -2.059744947483665E-12 2.647467043456408E-8 -2.386167331531442E-8 3.019002612841208E-8 1.516048948312837E-10
i -2.982068134881773E-15 7.820982998046416E-15 -1.049898095851132E-11 -1.542640315124384E-10 1.516048948312837E-10 4.593599165836706E-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 17.0   n/a MPO470436  

227944 (2007 GW38)          Discovered 2007-Apr-14 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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