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120261 (2004 GS27)
Classification: Main-belt Asteroid          SPK-ID: 2120261
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1675242467998432 6.0861e-08  
a 2.602784595035844 2.0368e-08 au
q 2.16675506617023 1.6343e-07 au
i 13.84794302522746 6.6259e-06 deg
node 111.6640649914839 2.5748e-05 deg
peri 206.5648537601774 3.2187e-05 deg
M 269.4549234059917 2.3276e-05 deg
tp 2459586.260812714565
(2022-Jan-06.76081271)
0.00010146 TDB
period 1533.754211727433
4.20
1.8004e-05
4.929e-08
d
yr
n .2347181818620991 2.7552e-09 deg/d
Q 3.038814123901459 2.3781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      288  
   data-arc span      7637 days (20.91 yr)  
   first obs. used      2000-06-04  
   last obs. used      2021-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .68333  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:03:27  

Additional Information
 Earth MOID = 1.1589 au 
 Jupiter MOID = 2.25507 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457319.5 (2015-Oct-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671238126521816 6.111e-08  
q 2.169720725665725 1.6422e-07 au
tp 2458049.354557477485
(2017-Oct-22.85455748)
9.3315e-05 TDB
node 111.7762450453213 2.5706e-05 deg
peri 205.8965038185216 3.214e-05 deg
i 13.85651207495723 6.6295e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      288  
   data-arc span      7637 days (20.91 yr)  
   first obs. used      2000-06-04  
   last obs. used      2021-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .68333  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:03:27  

Additional Information
 Jupiter MOID = 2.25507 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.734387851206328E-15 -9.984624107527645E-15 -5.719209199837834E-13 -2.508643920024344E-14 -5.844046850771544E-14 5.292124291847374E-16
q -9.984624107527645E-15 2.696941233991464E-14 2.123964160508628E-12 6.811844286875307E-14 2.469728452218724E-13 -9.966893365698827E-16
tp -5.719209199837834E-13 2.123964160508628E-12 8.707746255641164E-9 -5.844851515288842E-12 1.830723294175261E-9 5.395064683905353E-12
node -2.508643920024344E-14 6.811844286875307E-14 -5.844851515288842E-12 6.608123708021057E-10 -6.423200880195277E-10 1.104578364400783E-11
peri -5.844046850771544E-14 2.469728452218724E-13 1.830723294175261E-9 -6.423200880195277E-10 1.032984971210766E-9 -9.537966532844462E-12
i 5.292124291847374E-16 -9.966893365698827E-16 5.395064683905353E-12 1.104578364400783E-11 -9.537966532844462E-12 4.395061309313564E-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 15.78   n/a E2021B55  

120261 (2004 GS27)          Discovered 2004-Apr-15 by NEAT at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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