Orbit Fit and Astrometric record for 14SB349

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: 14SB349   
# Created Fri Dec 15 02:38:01 2017
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   29
# Arc:   2.28y
# First observation: 2014/09/24
#  Last observation: 2017/01/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000225   0.055712   0.000029   0.001948   0.043294   0.000000
# Chi-squared of fit:    22.60 DOF:   52 RMS:  0.16
# Min/Max residuals:    -0.56    0.33
# Exact a, adot, b, bdot, g, gdot:
  2.002702E-05  5.447974E-02  9.212122E-07  1.970666E-03  4.224183E-02 -8.117009E-03
# Covariance matrix:
  2.4748E-13 -3.4613E-13  4.5300E-15 -1.2828E-14 -1.0938E-13 -2.2806E-12
 -3.4613E-13  1.0491E-12 -1.8728E-14  5.2286E-14  4.3405E-13  9.2466E-12
  4.5300E-15 -1.8728E-14  1.8935E-13 -1.0844E-13  7.1271E-15 -2.7290E-13
 -1.2828E-14  5.2286E-14 -1.0844E-13  8.5579E-14  5.3039E-15  6.0943E-13
 -1.0938E-13  4.3405E-13  7.1271E-15  5.3039E-15  4.4765E-13  2.6172E-12
 -2.2806E-12  9.2466E-12 -2.7290E-13  6.0943E-13  2.6172E-12  9.7617E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.958077   35.266550    0.567942   -0.228032   -0.798016  2456924.791368
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:          297.73882 +/-     0.009
Argument of Peri:      358.56947 +/-     0.019
Long of Asc Node:      117.27064 +/-     0.001
Inclination:            15.51904 +/-     0.000
Eccentricity:         0.17996313 +/-    0.0002
Semi-Major Axis:     25.91593740 +/-    0.0018
Time of Perihelion: 2465254.6946 +/-       0.8
Perihelion:          21.25202430 +/-    0.0049
Aphelion:            30.57985050 +/-    0.0052
Period (y)              131.9346 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           19.58659369 +/-    0.0003
Ecliptic Y           13.15894813 +/-    0.0002
Ecliptic Z           -6.50857970 +/-    0.0001
Ecliptic XDOT        -0.00242772 +/-    0.0000
Ecliptic YDOT         0.00260664 +/-    0.0000
Ecliptic ZDOT         0.00026756 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   24.47762607 +/-    0.0003
Geocenter to KBO     23.67321486 +/-    0.0004
# Hcoef:  9.84

The following table shows the complete astrometric record for 14SB349. 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 (14SB349) followed by the observatory code and reference code for the source of the astrometry.

2014 09  24.290590 02 32 58.19   -01 48 03.7         14SB349   W84  C~1bR3      
2014 09  24.291991 02 32 58.18   -01 48 03.9         14SB349   W84  C~1bR3      
2014 10  01.374641 02 32 16.87   -01 54 01.9         14SB349   W84  C~1bR3      
2014 10  23.308565 02 29 43.85   -02 11 01.2         14SB349   W84  C~1bR3      
2014 10  29.294468 02 28 58.20   -02 14 57.6         14SB349   W84  C~1bR3      
2015 08  31.295440 02 46 11.70   -00 20 56.6   23.1z 14SB349   W84  C~1bR3      
2015 09  19.327002 02 45 09.18   -00 35 56.9   24.3r 14SB349   W84  C~1bR3      
2015 09  19.329363 02 45 09.18   -00 35 57.2   23.1i 14SB349   W84  C~1bR3      
2015 09  26.227500 02 44 34.75   -00 41 39.1   23.8i 14SB349   W84  C~1bR3      
2015 09  26.231285 02 44 34.75   -00 41 39.6   22.7z 14SB349   W84  C~1bR3      
2015 10  09.208461 02 43 16.09   -00 52 13.7   22.9r 14SB349   W84  C~1bR3      
2015 10  09.210810 02 43 16.09   -00 52 13.8   22.9i 14SB349   W84  C~1bR3      
2015 10  16.294670 02 42 26.93   -00 57 42.8   23.8g 14SB349   W84  C~1bR3      
2015 10  16.296875 02 42 26.93   -00 57 42.9   22.7r 14SB349   W84  C~1bR3      
2015 10  16.299225 02 42 26.91   -00 57 43.0   23.0i 14SB349   W84  C~1bR3      
2015 10  16.303032 02 42 26.89   -00 57 43.2   22.9z 14SB349   W84  C~1bR3      
2015 10  20.211296 02 41 58.39   -01 00 36.0   22.8i 14SB349   W84  C~1bR3      
2015 10  20.215104 02 41 58.37   -01 00 36.2   23.6z 14SB349   W84  C~1bR3      
2016 10  20.272743 02 53 54.17   +00 08 11.4   23.0i 14SB349   W84  C~2Azv      
2016 10  20.279363 02 53 54.17   +00 08 11.4   22.7z 14SB349   W84  C~2Azv      
2016 10  27.115301 02 53 02.55   +00 03 31.5   23.0r 14SB349   W84  C~2Azv      
2016 11  10.109769 02 51 12.58   -00 04 30.4   22.8i 14SB349   W84  C~2Azv      
2016 11  10.116400 02 51 12.55   -00 04 30.5   22.6z 14SB349   W84  C~2Azv      
2016 12  17.173704 02 46 53.32   -00 11 52.0   22.8i 14SB349   W84  C~2Azv      
2016 12  17.180336 02 46 53.31   -00 11 51.9   22.5z 14SB349   W84  C~2Azv      
2016 12  24.046597 02 46 19.09   -00 10 37.9   22.8r 14SB349   W84  C~2Azv      
2017 01  03.081250 02 45 40.52   -00 07 20.4   23.2r 14SB349   W84  C~2Azv      
2017 01  03.083611 02 45 40.50   -00 07 20.1   22.9i 14SB349   W84  C~2Azv      
2017 01  03.087593 02 45 40.48   -00 07 20.1   22.6z 14SB349   W84  C~2Azv      

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     0.08       0.00    -0.04
  2   0.0000     -0.21     0.00      -0.14    -0.15
  3   0.0194   -702.25     0.30    -137.51    -0.08
  4   0.0794  -3203.02    -0.12    -356.90     0.33
  5   0.0958  -3927.16    -0.21    -358.55    -0.18
  6   0.9336  12970.84    -0.03    1069.47     0.18
  7   0.9857  11786.49    -0.18     522.91     0.22
  8   0.9857  11786.39    -0.08     522.62    -0.01
  9   1.0046  11184.86    -0.14     367.47     0.09
 10   1.0046  11184.70     0.05     366.99    -0.31
 11   1.0402   9859.20    -0.03     151.76     0.05
 12   1.0402   9859.17     0.20     151.66    -0.01
 13   1.0596   9053.20    -0.15      80.83     0.09
 14   1.0596   9053.17     0.07      80.74     0.01
 15   1.0596   9052.85     0.04      80.74     0.03
 16   1.0596   9052.50     0.14      80.65    -0.04
 17   1.0703   8591.25    -0.04      56.54     0.02
 18   1.0703   8590.90     0.07      56.45    -0.06
 19   2.0725  20145.27    -0.56     458.80    -0.10
 20   2.0725  20145.27     0.25     458.80    -0.07
 21   2.0912  19314.48     0.14     446.64    -0.17
 22   2.1296  17584.22    -0.11     529.30    -0.06
 23   2.1296  17583.76     0.25     529.36    -0.08
 24   2.2310  13741.84    -0.13    1381.65     0.06
 25   2.2310  13741.73     0.26    1381.80    -0.02
 26   2.2498  13278.64     0.07    1619.46     0.10
 27   2.2773  12794.19     0.06    1995.34    -0.10
 28   2.2773  12794.00    -0.04    1995.72     0.19
 29   2.2773  12793.71    -0.17    1995.82     0.13

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.

14SB349    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        26.041    26.045    26.037
ecceobj         0.177     0.177     0.177
incobj         15.521    15.521    15.521
qmin           18.833    21.324    20.683
qmax           31.664    30.737    31.016
amean          25.351    25.943    25.940
amin           24.169    25.644    25.634
amax           26.353    26.290    26.303
emean           0.203     0.168     0.177
emin            0.153     0.160     0.163
emax            0.234     0.177     0.195
imean          12.197    13.964    13.934
imin           10.553    13.926    13.750
imax           13.995    13.991    14.023
excite_mean     0.295     0.294     0.299
fracstop        0.015     0.002     0.004
cjmean          2.942     2.937     2.934

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        78.5      26.6      21.3
kozaiamp        178.2     178.2     178.2