Orbit Fit and Astrometric record for 14SS349

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: 14SS349   
# Created Mon Oct 23 01:38:29 2017
# Orbit generated from Bernstein formalism
# Fitting   12 observations of   12
# Arc:   1.21y
# First observation: 2014/09/22
#  Last observation: 2015/12/09
Preliminary a, adot, b, bdot, g, gdot:
  -0.000028   0.013499  -0.000005  -0.014380   0.018943   0.000000
# Chi-squared of fit:    10.82 DOF:   18 RMS:  0.17
# Min/Max residuals:    -0.29    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.031321E-05  1.369824E-02 -1.150103E-05 -1.464309E-02  1.924812E-02  7.042032E-03
# Covariance matrix:
  3.4739E-13  3.8889E-13  2.4198E-14 -8.9210E-13  7.7452E-13  6.2290E-11
  3.8889E-13  4.1509E-12  1.5470E-13 -4.6423E-12  3.6050E-12  3.2726E-10
  2.4198E-14  1.5470E-13  2.1833E-13 -4.4010E-13  1.3953E-13  1.4091E-11
 -8.9210E-13 -4.6423E-12 -4.4010E-13  6.9984E-12 -5.0852E-12 -4.4402E-10
  7.7452E-13  3.6050E-12  1.3953E-13 -5.0852E-12  4.3915E-12  3.5525E-10
  6.2290E-11  3.2726E-10  1.4091E-11 -4.4402E-10  3.5525E-10  3.1225E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.748881  -24.807537   -0.401716   -0.203481   -0.899956  2456922.579788
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:            7.60449 +/-     0.277
Argument of Peri:      148.00839 +/-     0.710
Long of Asc Node:      144.23110 +/-     0.002
Inclination:            48.32843 +/-     0.005
Eccentricity:         0.67892557 +/-    0.0095
Semi-Major Axis:    141.82582997 +/-    3.3789
Time of Perihelion: 2443888.8676 +/-      91.2
Perihelion:          45.53664722 +/-    1.7315
Aphelion:           238.11501273 +/-    5.8312
Period (y)             1689.0449 +/-     60.36
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           47.00016077 +/-    0.0050
Ecliptic Y          -21.28124188 +/-    0.0023
Ecliptic Z          -11.46552451 +/-    0.0013
Ecliptic XDOT         0.00128243 +/-    0.0000
Ecliptic YDOT         0.00154702 +/-    0.0000
Ecliptic ZDOT        -0.00225241 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   52.85229059 +/-    0.0046
Geocenter to KBO     51.95312492 +/-    0.0057
# Hcoef:  7.63

The following table shows the complete astrometric record for 14SS349. 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 (14SS349) followed by the observatory code and reference code for the source of the astrometry.

2014 09  22.07901  22 47 59.824  -21 25 22.66  24.8r 14SS349   807  C~1x8l      
2014 09  22.14865  22 47 59.554  -21 25 24.11        14SS349   807  C~1x8l      
2014 09  22.22108  22 47 59.298  -21 25 25.67        14SS349   807  C~1x8l      
2014 10  22.10532  22 46 31.030  -21 33 24.07  24.7r 14SS349   304  C~1x8l      
2014 10  22.17444  22 46 30.868  -21 33 24.90        14SS349   304  C~1x8l      
2014 10  24.07754  22 46 26.778  -21 33 40.04        14SS349   304  C~1x8l      
2014 11  19.06337  22 45 55.040  -21 34 04.43        14SS349   304  C~1x8l      
2014 11  20.06106  22 45 54.803  -21 33 58.32        14SS349   304  C~1x8l      
2015 05  22.40111  22 56 30.376  -20 54 21.45        14SS349   304  C~1x8l      
2015 07  17.41452  22 56 11.368  -21 18 17.51  24.7r 14SS349   304  C~1x8l      
2015 10  16.26010  22 51 13.522  -22 00 04.88        14SS349   304  C~1x8l      
2015 12  09.07021  22 50 28.270  -21 58 03.57        14SS349   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     0.19       0.00    -0.11
  2   0.0002     -4.04    -0.01       0.13     0.14
  3   0.0004     -7.94     0.07       0.07     0.20
  4   0.0822  -1329.08     0.08      35.40    -0.04
  5   0.0824  -1331.49    -0.07      35.51    -0.24
  6   0.0876  -1389.97     0.23      43.54    -0.02
  7   0.1588  -1807.98    -0.29     191.58    -0.13
  8   0.1615  -1808.68    -0.20     198.49     0.11
  9   0.6634   7300.29    -0.17   -1104.16    -0.01
 10   0.8168   6481.28     0.14   -2314.56     0.25
 11   1.0655   1672.83    -0.26   -2970.81    -0.17
 12   1.2128   1141.29     0.28   -2612.32     0.01

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.

14SS349    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       143.782   154.919   134.726
ecceobj         0.683     0.710     0.656
incobj         48.198    48.214    48.183
qmin           44.422    43.590    45.231
qmax          248.872   274.136   229.051
amean         143.040   154.146   134.104
amin          140.031   150.799   131.449
amax          147.257   159.521   137.742
emean           0.679     0.707     0.652
emin            0.670     0.699     0.644
emax            0.690     0.718     0.663
imean          47.140    47.135    47.101
imin           46.466    46.443    46.494
imax           47.865    47.863    47.754
excite_mean     0.999     1.018     0.981
fracstop        1.000     1.000     1.000
cjmean          2.389     2.373     2.404

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       158.7     155.1     161.3
kozaiamp         11.3       9.6      11.8