Orbit Fit and Astrometric record for 14XY40

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: 14XY40    
# Created Tue Oct 17 01:38:31 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   1.97y
# First observation: 2014/12/15
#  Last observation: 2016/12/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000001   0.014319  -0.000020  -0.004360   0.019045   0.000000
# Chi-squared of fit:     8.02 DOF:   34 RMS:  0.11
# Min/Max residuals:    -0.33    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.290925E-05  1.423461E-02 -3.646883E-06 -4.345073E-03  1.870963E-02 -1.137986E-03
# Covariance matrix:
  2.1488E-13 -2.8262E-13 -1.6554E-15  4.5095E-14 -1.5967E-13 -5.7581E-12
 -2.8262E-13  1.1407E-12  1.3069E-14 -2.7968E-13  8.3685E-13  3.3965E-11
 -1.6554E-15  1.3069E-14  1.8731E-13 -1.2091E-13  8.0289E-16  3.3056E-13
  4.5095E-14 -2.7968E-13 -1.2091E-13  1.9701E-13 -2.2435E-13 -9.2564E-12
 -1.5967E-13  8.3685E-13  8.0289E-16 -2.2435E-13  1.2013E-12  3.3280E-11
 -5.7581E-12  3.3965E-11  3.3056E-13 -9.2564E-12  3.3280E-11  1.1877E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -24.382028    5.915629   -0.957572   -0.092877   -0.205400  2457006.626033
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:          207.43144 +/-     0.730
Argument of Peri:       37.05464 +/-     0.721
Long of Asc Node:      132.92139 +/-     0.003
Inclination:            29.10697 +/-     0.001
Eccentricity:         0.15068371 +/-    0.0006
Semi-Major Axis:     47.16474409 +/-    0.0170
Time of Perihelion: 2507140.8314 +/-     238.4
Perihelion:          40.05778550 +/-    0.0333
Aphelion:            54.27170268 +/-    0.0358
Period (y)              323.9175 +/-      0.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           48.54489161 +/-    0.0028
Ecliptic Y            5.99463198 +/-    0.0003
Ecliptic Z          -22.06475204 +/-    0.0013
Ecliptic XDOT        -0.00063072 +/-    0.0000
Ecliptic YDOT         0.00202409 +/-    0.0000
Ecliptic ZDOT        -0.00051028 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.65999811 +/-    0.0026
Geocenter to KBO     53.44842108 +/-    0.0031
# Hcoef:  5.54

The following table shows the complete astrometric record for 14XY40. 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 (14XY40) followed by the observatory code and reference code for the source of the astrometry.

2014 12  15.125255 01 01 47.17   -19 57 46.9   22.3i 14XY40    W84  C~1yT5      
2014 12  20.121667 01 01 42.18   -19 56 02.4   23.0g 14XY40    W84  C~1yT5      
2014 12  22.058611 01 01 40.74   -19 55 18.3   22.6r 14XY40    W84  C~1yT5      
2014 12  24.101412 01 01 39.53   -19 54 29.2   23.2g 14XY40    W84  C~1yT5      
2014 12  24.102778 01 01 39.52   -19 54 29.2   22.2i 14XY40    W84  C~1yT5      
2014 12  30.070174 01 01 37.76   -19 51 55.0   22.1z 14XY40    W84  C~1yT5      
2015 01  09.071898 01 01 40.89   -19 47 00.6   22.8r 14XY40    W84  C~1yT5      
2015 11  06.105046 01 06 58.58   -19 55 11.3   22.1i 14XY40    W84  C~1yT5      
2015 11  06.106424 01 06 58.58   -19 55 11.3   22.3r 14XY40    W84  C~1yT5      
2015 11  06.107789 01 06 58.58   -19 55 11.2   23.2g 14XY40    W84  C~1yT5      
2015 12  01.064572 01 05 47.28   -19 54 15.3   22.3z 14XY40    W84  C~1yT5      
2015 12  05.163426 01 05 38.78   -19 53 26.8   22.2z 14XY40    W84  C~1yT5      
2016 08  16.359340 01 15 03.02   -19 12 10.4   21.8z 14XY40    W84  C~2GtJ      
2016 08  16.360706 01 15 03.02   -19 12 10.5   22.0i 14XY40    W84  C~2GtJ      
2016 08  29.366562 01 14 34.22   -19 20 00.0   22.2r 14XY40    W84  C~2GtJ      
2016 08  29.367928 01 14 34.22   -19 19 59.9   23.2g 14XY40    W84  C~2GtJ      
2016 10  27.150532 01 11 08.84   -19 46 09.6   22.1r 14XY40    W84  C~2GtJ      
2016 12  05.153229 01 09 13.24   -19 45 50.7   22.1r 14XY40    W84  C~2GtJ      
2016 12  05.154606 01 09 13.23   -19 45 50.6   22.2i 14XY40    W84  C~2GtJ      
2016 12  05.155972 01 09 13.23   -19 45 50.7   22.9g 14XY40    W84  C~2GtJ      

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    -0.18       0.00    -0.01
  2   0.0137    -19.84    -0.06     124.41    -0.02
  3   0.0190    -19.70    -0.06     172.96    -0.11
  4   0.0246    -14.52     0.24     224.68     0.13
  5   0.0246    -14.65     0.11     224.74     0.16
  6   0.0409     27.71     0.01     375.07     0.04
  7   0.0683    191.66     0.07     623.56    -0.00
  8   0.8925   4042.54     0.04   -1723.18    -0.06
  9   0.8925   4042.54     0.10   -1723.18    -0.08
 10   0.8925   4042.59     0.21   -1723.09    -0.02
 11   0.9608   3156.93    -0.33   -1242.87    -0.14
 12   0.9720   3069.12    -0.28   -1147.87    -0.07
 13   1.6707  11343.20    -0.05   -2365.54     0.04
 14   1.6707  11343.16    -0.04   -2365.63    -0.02
 15   1.7063  10769.26    -0.07   -2609.17    -0.04
 16   1.7063  10769.30     0.04   -2609.08     0.07
 17   1.8673   7465.61     0.07   -2756.27    -0.02
 18   1.9741   6000.44     0.10   -2033.17     0.01
 19   1.9741   6000.36     0.04   -2033.01     0.13
 20   1.9741   6000.32     0.02   -2033.10     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.

14XY40    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        47.533    47.583    47.486
ecceobj         0.142     0.144     0.140
incobj         29.050    29.049    29.051
qmin           39.311    39.279    39.412
qmax           55.662    55.835    55.489
amean          47.317    47.368    47.269
amin           46.919    46.969    46.877
amax           47.774    47.832    47.725
emean           0.151     0.153     0.149
emin            0.135     0.137     0.134
emax            0.166     0.168     0.163
imean          27.655    27.644    27.666
imin           27.326    27.293    27.344
imax           27.991    27.996    27.998
excite_mean     0.488     0.489     0.488
fracstop        1.000     1.000     1.000
cjmean          2.831     2.831     2.831

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       170.7     169.2     172.1
kozaiamp        180.0     180.0     180.0