Orbit Fit and Astrometric record for 14SR350

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 14SR350   
# Created Mon Jan 22 02:38:13 2018
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   2.03y
# First observation: 2014/09/26
#  Last observation: 2016/10/08
Preliminary a, adot, b, bdot, g, gdot:
   0.000014   0.023121   0.000001   0.002088   0.021878   0.000000
# Chi-squared of fit:     4.33 DOF:   24 RMS:  0.09
# Min/Max residuals:    -0.22    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.677232E-05  2.356617E-02  1.618234E-06  2.132972E-03  2.207671E-02  9.359195E-03
# Covariance matrix:
  4.1093E-13 -2.0747E-12 -1.3069E-13 -1.2778E-13  7.9152E-13 -4.0895E-11
 -2.0747E-12  1.0372E-10 -4.3498E-12  1.2012E-11  2.6614E-11  2.2298E-09
 -1.3069E-13 -4.3498E-12  5.2894E-13 -6.7997E-13 -2.3450E-12 -9.5594E-11
 -1.2778E-13  1.2012E-11 -6.7997E-13  1.5766E-12  3.6798E-12  2.5951E-10
  7.9152E-13  2.6614E-11 -2.3450E-12  3.6798E-12  1.4302E-11  5.8482E-10
 -4.0895E-11  2.2298E-09 -9.5594E-11  2.5951E-10  5.8482E-10  4.8015E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -28.688164  -44.357618   -0.735167   -0.328911   -0.601362  2456926.598324
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:           12.43513 +/-     0.419
Argument of Peri:      219.97108 +/-     0.538
Long of Asc Node:       35.09450 +/-     0.005
Inclination:            28.77016 +/-     0.000
Eccentricity:         0.62840809 +/-    0.0108
Semi-Major Axis:     99.53561251 +/-    2.2331
Time of Perihelion: 2444391.5672 +/-       7.2
Perihelion:          36.98662789 +/-    1.3541
Aphelion:           162.08459713 +/-    3.7905
Period (y)              993.0610 +/-     33.42
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.41320845 +/-    0.0049
Ecliptic Y          -27.73270551 +/-    0.0048
Ecliptic Z          -21.74424180 +/-    0.0037
Ecliptic XDOT         0.00285742 +/-    0.0000
Ecliptic YDOT         0.00128437 +/-    0.0000
Ecliptic ZDOT        -0.00032501 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.90263432 +/-    0.0046
Geocenter to KBO     45.29661240 +/-    0.0078
# Hcoef:  7.03

The following table shows the complete astrometric record for 14SR350. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (14SR350) followed by the observatory code and reference code for the source of the astrometry.

2014 09  26.097546 21 57 22.76   -43 11 16.1   24.1g 14SR350   W84  C~2Bnm      
2014 09  26.098924 21 57 22.75   -43 11 16.1   22.7i 14SR350   W84  C~2Bnn      
2014 10  14.121690 21 56 17.81   -43 05 42.1   23.3r 14SR350   W84  C~2Bnn      
2014 10  14.123067 21 56 17.80   -43 05 42.0   22.6i 14SR350   W84  C~2Bnn      
2014 10  21.139931 21 56 00.44   -43 02 27.8   22.9i 14SR350   W84  C~2Bnn      
2014 10  23.158264 21 55 56.37   -43 01 25.6   23.1r 14SR350   W84  C~2Bnn      
2014 10  23.167639 21 55 56.37   -43 01 25.6   22.7i 14SR350   W84  C~2Bnn      
2014 10  26.073773 21 55 51.28   -42 59 51.5   24.0g 14SR350   W84  C~2Bnn      
2014 10  28.024664 21 55 48.37   -42 58 45.5   22.9z 14SR350   W84  C~2Bnn      
2014 10  28.102234 21 55 48.27   -42 58 42.7   22.9i 14SR350   W84  C~2Bnn      
2014 11  05.027639 21 55 40.81   -42 53 51.4   22.2z 14SR350   W84  C~2Bnn      
2016 09  24.089201 22 10 04.37   -41 53 38.3   22.9r 14SR350   W84  C~2Bnn      
2016 09  24.090556 22 10 04.37   -41 53 38.2   23.4i 14SR350   W84  C~2Bnn      
2016 09  24.091933 22 10 04.39   -41 53 38.4   23.9g 14SR350   W84  C~2Bnn      
2016 10  08.053437 22 09 08.41   -41 50 41.8   23.0i 14SR350   W84  C~2Bnn      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00     0.02       0.00    -0.02
  2   0.0000     -0.10    -0.02       0.04    -0.02
  3   0.0493   -525.23     0.04     583.99    -0.08
  4   0.0494   -525.29     0.01     584.12     0.00
  5   0.0686   -625.63    -0.13     836.78     0.08
  6   0.0741   -642.77    -0.11     911.40     0.23
  7   0.0741   -642.77    -0.04     911.40    -0.12
  8   0.0821   -657.95     0.02    1019.76     0.03
  9   0.0874   -661.95    -0.02    1092.97    -0.00
 10   0.0876   -661.88     0.17    1095.97     0.04
 11   0.1093   -625.15     0.06    1396.35    -0.13
 12   1.9959   9590.58    -0.13     825.55     0.04
 13   1.9959   9590.62    -0.03     825.64     0.10
 14   1.9959   9590.74     0.15     825.37    -0.22
 15   2.0341   9097.88     0.02    1250.29     0.07

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

14SR350    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       100.066   107.077    94.220
ecceobj         0.629     0.660     0.599
incobj         28.782    28.781    28.783
qmin           35.389    34.607    36.105
qmax          170.222   185.829   156.748
amean         100.670   107.531    94.601
amin           98.674   105.404    92.966
amax          103.879   110.795    97.033
emean           0.633     0.662     0.602
emin            0.618     0.644     0.586
emax            0.648     0.679     0.618
imean          28.109    28.157    28.189
imin           27.344    27.104    27.332
imax           29.426    29.694    29.247
excite_mean     0.789     0.813     0.765
fracstop        1.000     1.000     1.000
cjmean          2.795     2.777     2.813

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       283.5     289.7     251.4
kozaiamp        180.0      70.4     180.0