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461660 (2005 GR121)
Classification: Main-belt Asteroid          SPK-ID: 2461660
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .108412170816335 5.5435e-08  
a 2.37203919938535 2.1882e-08 au
q 2.114881280518543 1.3092e-07 au
i 6.916176903354818 9.0953e-06 deg
node 349.0269837642087 4.1548e-05 deg
peri 293.8484568493695 6.0455e-05 deg
M 322.0966441872563 4.501e-05 deg
tp 2459140.993548272119
(2020-Oct-18.49354827)
0.00016701 TDB
period 1334.38520926313
3.65
1.8464e-05
5.055e-08
d
yr
n .2697871630327782 3.7331e-09 deg/d
Q 2.629197118252158 2.4254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      110  
   data-arc span      5047 days (13.82 yr)  
   first obs. used      2005-03-16  
   last obs. used      2019-01-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67899  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 08:30:55  

Additional Information
 Earth MOID = 1.11002 au 
 Jupiter MOID = 2.52242 au 
 T_jup = 3.526 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.9   n/a MPO419228  

461660 (2005 GR121)          Discovered 2005-Apr-06 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2016-03-24

Alternate Designations
 2005 GR121 = 2006 QX178 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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