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JPL Small-Body Database Browser
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117980 (1256 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2117980
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04575868044756575 6.9403e-08  
a 2.253617174907512 1.2628e-08 au
q 2.150494626749773 1.5747e-07 au
i 8.418440987347958 7.4109e-06 deg
node 3.68891169656631 2.7011e-05 deg
peri 173.9164929468917 5.472e-05 deg
M 84.60526260299271 4.5961e-05 deg
tp 2458310.088694217346
(2018-Jul-10.58869422)
0.00015787 TDB
period 1235.715921979271
3.38
1.0386e-05
2.844e-08
d
yr
n .2913290940068012 2.4487e-09 deg/d
Q 2.35673972306525 1.3206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      505  
   data-arc span      17156 days (46.97 yr)  
   first obs. used      1971-03-24  
   last obs. used      2018-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57827  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:46:08  

Additional Information
 Earth MOID = 1.15395 au 
 Jupiter MOID = 2.60382 au 
 T_jup = 3.610 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456785.5 (2014-May-08.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .045902601749563 6.9288e-08  
q 2.149826388406434 1.5719e-07 au
tp 2457073.284272483326
(2015-Feb-19.78427248)
0.00015866 TDB
node 3.748600425313906 2.7011e-05 deg
peri 173.4542312099204 5.4761e-05 deg
i 8.419294676887041 7.4107e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      505  
   data-arc span      17156 days (46.97 yr)  
   first obs. used      1971-03-24  
   last obs. used      2018-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57827  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:46:08  

Additional Information
 Jupiter MOID = 2.60382 au 
 T_jup = 3.610 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.800877103993417E-15 -1.085968460872233E-14 2.052788342242452E-12 5.247566003405992E-15 6.785154243957753E-13 -1.115565650907514E-14
q -1.085968460872233E-14 2.470766959491977E-14 -4.827698075316997E-12 -1.228817575668566E-14 -1.598822349534364E-12 2.518508705092985E-14
tp 2.052788342242452E-12 -4.827698075316997E-12 2.517159835377041E-8 7.015839365160908E-12 7.563165555931813E-9 1.20772721220362E-11
node 5.247566003405992E-15 -1.228817575668566E-14 7.015839365160908E-12 7.296097182416438E-10 -7.185824390158072E-10 -9.821772063647462E-12
peri 6.785154243957753E-13 -1.598822349534364E-12 7.563165555931813E-9 -7.185824390158072E-10 2.998728723346803E-9 1.31499472512079E-11
i -1.115565650907514E-14 2.518508705092985E-14 1.20772721220362E-11 -9.821772063647462E-12 1.31499472512079E-11 5.491872524729929E-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 16.3   n/a MPO436566  

117980 (1256 T-1)          Discovered 1971-Mar-25 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1256 T-1 = 2003 VL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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