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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04607293312367451 5.5011e-08  
a 2.252620130247056 1.1492e-08 au
q 2.14883531363314 1.2282e-07 au
i 8.419793633881101 6.0879e-06 deg
node 3.664744306719128 2.6795e-05 deg
peri 173.4279406363108 5.2038e-05 deg
M 201.7008394257439 4.3998e-05 deg
tp 2459543.508314120699
(2021-Nov-25.00831412)
0.00015143 TDB
period 1234.895955065744
3.38
9.4501e-06
2.587e-08
d
yr
n .2915225355814161 2.2309e-09 deg/d
Q 2.356404946860971 1.2022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      575  
   data-arc span      18116 days (49.60 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54159  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:14:57  

Additional Information
 Earth MOID = 1.15201 au 
 Jupiter MOID = 2.60294 au 
 T_jup = 3.610 
[ show covariance matrix ]

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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