Orbit Fit and Astrometric record for 14SW349

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: 14SW349   
# Created Thu Dec 14 02:38:04 2017
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   11
# Arc:   1.07y
# First observation: 2014/09/19
#  Last observation: 2015/10/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000088   0.019565   0.000013   0.003872   0.019835   0.000000
# Chi-squared of fit:    26.73 DOF:   16 RMS:  0.28
# Min/Max residuals:    -0.58    0.56
# Exact a, adot, b, bdot, g, gdot:
  1.539373E-05  1.988010E-02  2.781483E-06  3.938578E-03  2.035200E-02  8.568009E-03
# Covariance matrix:
  4.3319E-13  1.8232E-12 -1.0184E-13  6.6459E-13  1.4141E-12  1.3056E-10
  1.8232E-12  2.5520E-11 -1.0929E-12  7.8086E-12  1.4835E-11  1.5239E-09
 -1.0184E-13 -1.0929E-12  2.6782E-13 -6.0961E-13 -6.9523E-13 -6.7923E-11
  6.6459E-13  7.8086E-12 -6.0961E-13  3.3249E-12  4.7133E-12  4.8259E-10
  1.4141E-12  1.4835E-11 -6.9523E-13  4.7133E-12  9.5648E-12  9.2330E-10
  1.3056E-10  1.5239E-09 -6.7923E-11  4.8259E-10  9.2330E-10  9.4219E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -10.547648  -22.737046   -0.319862   -0.174697   -0.938946  2456919.564708
# Heliocentric elements and errors
Epoch:              2456910.5000  =  2014/09/10
Mean Anomaly:           16.21769 +/-     0.743
Argument of Peri:      251.39573 +/-     0.775
Long of Asc Node:       19.75076 +/-     0.007
Inclination:            15.23111 +/-     0.002
Eccentricity:         0.58975456 +/-    0.0170
Semi-Major Axis:     95.57574910 +/-    2.9165
Time of Perihelion: 2441535.8021 +/-      31.1
Perihelion:          39.20951542 +/-    2.0201
Aphelion:           151.94198278 +/-    4.9139
Period (y)              934.3934 +/-     42.77
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           45.55352251 +/-    0.0068
Ecliptic Y          -18.74207171 +/-    0.0029
Ecliptic Z           -8.99422897 +/-    0.0014
Ecliptic XDOT         0.00216349 +/-    0.0000
Ecliptic YDOT         0.00198655 +/-    0.0000
Ecliptic ZDOT         0.00031001 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.07279521 +/-    0.0062
Geocenter to KBO     49.13522649 +/-    0.0075
# Hcoef:  7.58

The following table shows the complete astrometric record for 14SW349. 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 (14SW349) followed by the observatory code and reference code for the source of the astrometry.

2014 09  19.06393  22 52 19.488  -18 36 28.89  24.5r 14SW349   807  C~1x8l      
2014 09  19.13597  22 52 19.204  -18 36 30.07        14SW349   807  C~1x8l      
2014 09  19.21418  22 52 18.898  -18 36 31.40        14SW349   807  C~1x8l      
2014 10  22.13159  22 50 31.470  -18 41 21.17        14SW349   304  C~1x8l      
2014 10  23.08761  22 50 29.076  -18 41 21.24        14SW349   304  C~1x8l      
2014 10  25.03891  22 50 24.580  -18 41 21.71        14SW349   304  C~1x8l      
2014 11  19.06924  22 49 49.379  -18 38 27.53  24.4r 14SW349   304  C~1x8l      
2014 11  20.06789  22 49 48.958  -18 38 13.86        14SW349   304  C~1x8l      
2015 05  22.38678  23 00 24.689  -17 23 14.15        14SW349   304  C~1x8l      
2015 10  16.24153  22 54 47.779  -18 02 40.52        14SW349   304  C~1x8l      
2015 10  16.26745  22 54 47.725  -18 02 40.57        14SW349   304  C~1x8l      

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     0.01       0.00     0.06
  2   0.0002     -4.18    -0.03       0.47     0.04
  3   0.0004     -8.71    -0.07       0.93    -0.06
  4   0.0905  -1529.09     0.40     322.87    -0.58
  5   0.0932  -1560.52    -0.25     335.90     0.44
  6   0.0985  -1619.67     0.56     360.04    -0.33
  7   0.1670  -2014.61    -0.35     713.09     0.26
  8   0.1698  -2014.89    -0.31     728.01     0.30
  9   0.6717   8094.98    -0.05    1328.77    -0.22
 10   1.0737   2734.07    -0.11    1048.26     0.07
 11   1.0738   2733.35     0.18    1048.52     0.02

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.

14SW349    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        96.727   106.447    89.301
ecceobj         0.593     0.641     0.546
incobj         15.199    15.198    15.199
qmin           38.332    37.087    39.612
qmax          158.819   181.165   141.712
amean          96.638   106.389    89.189
amin           95.009   103.979    87.760
amax           99.093   109.634    91.223
emean           0.592     0.638     0.543
emin            0.582     0.626     0.531
emax            0.603     0.652     0.555
imean          15.455    15.866    15.590
imin           15.114    15.060    15.129
imax           15.763    16.666    16.260
excite_mean     0.649     0.694     0.606
fracstop        1.000     1.000     1.000
cjmean          3.095     3.067     3.121

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       213.2     196.4     173.2
kozaiamp        180.0     180.0     179.9