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 Thu Oct 18 01:09:42 2018
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   27
# Arc:   3.01y
# First observation: 2014/12/15
#  Last observation: 2017/12/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000023   0.014352  -0.000010  -0.004375   0.019063   0.000000
# Chi-squared of fit:     9.06 DOF:   48 RMS:  0.10
# Min/Max residuals:    -0.31    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.295444E-05  1.423438E-02 -3.536732E-06 -4.345177E-03  1.870927E-02 -1.147379E-03
# Covariance matrix:
  2.0279E-13 -2.0956E-13 -1.3342E-14  4.3770E-14 -8.9488E-14 -3.1991E-12
 -2.0956E-13  5.6820E-13  4.4956E-14 -1.6526E-13  1.6418E-13  1.1397E-11
 -1.3342E-14  4.4956E-14  1.5750E-13 -8.1209E-14  1.8808E-14  9.8959E-13
  4.3770E-14 -1.6526E-13 -8.1209E-14  9.7519E-14 -4.6614E-14 -3.5896E-12
 -8.9488E-14  1.6418E-13  1.8808E-14 -4.6614E-14  2.4275E-13  3.9857E-12
 -3.1991E-12  1.1397E-11  9.8959E-13 -3.5896E-12  3.9857E-12  2.4920E-10
#      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:          207.70112 +/-     0.322
Argument of Peri:       36.85386 +/-     0.320
Long of Asc Node:      132.92207 +/-     0.002
Inclination:            29.10718 +/-     0.000
Eccentricity:         0.15083416 +/-    0.0004
Semi-Major Axis:     47.17036211 +/-    0.0059
Time of Perihelion: 2507061.1451 +/-     105.4
Perihelion:          40.05546039 +/-    0.0173
Aphelion:            54.28526383 +/-    0.0179
Period (y)              323.9754 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           48.54582841 +/-    0.0013
Ecliptic Y            5.99473149 +/-    0.0001
Ecliptic Z          -22.06517256 +/-    0.0006
Ecliptic XDOT        -0.00063198 +/-    0.0000
Ecliptic YDOT         0.00202397 +/-    0.0000
Ecliptic ZDOT        -0.00050974 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.66102963 +/-    0.0012
Geocenter to KBO     53.44945272 +/-    0.0014
# Hcoef:  5.51

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      
2017 10  21.143930 01 15 10.050  -19 36 41.22        14XY40    W84  C~2g4M      
2017 10  21.145295 01 15 10.049  -19 36 41.19        14XY40    W84  C~2g4M      
2017 11  22.193258 01 13 21.113  -19 40 02.17  22.1i 14XY40    W84  C~2g4M      
2017 11  23.063883 01 13 18.722  -19 39 58.00  21.9z 14XY40    W84  C~2g4M      
2017 11  27.177657 01 13 07.902  -19 39 31.86  22.0z 14XY40    W84  C~2g4M      
2017 12  20.10187  01 12 26.701  -19 33 47.81  22.2R 14XY40    G37  C~2Uxt      
2017 12  20.21751  01 12 26.575  -19 33 45.27        14XY40    G37  C~2Uxt      

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    -0.03
  2   0.0137    -19.84    -0.07     124.41    -0.04
  3   0.0190    -19.70    -0.07     172.96    -0.12
  4   0.0246    -14.52     0.23     224.68     0.11
  5   0.0246    -14.65     0.10     224.74     0.14
  6   0.0409     27.71     0.00     375.07     0.03
  7   0.0683    191.66     0.06     623.56    -0.01
  8   0.8925   4042.54     0.07   -1723.18    -0.07
  9   0.8925   4042.54     0.13   -1723.18    -0.09
 10   0.8925   4042.59     0.24   -1723.09    -0.02
 11   0.9608   3156.93    -0.31   -1242.87    -0.13
 12   0.9720   3069.12    -0.26   -1147.87    -0.07
 13   1.6707  11343.20    -0.03   -2365.54     0.07
 14   1.6707  11343.16    -0.02   -2365.63     0.01
 15   1.7063  10769.26    -0.06   -2609.17    -0.00
 16   1.7063  10769.30     0.05   -2609.08     0.11
 17   1.8673   7465.61     0.06   -2756.27     0.02
 18   1.9741   6000.44     0.07   -2033.17     0.07
 19   1.9741   6000.36     0.01   -2033.01     0.18
 20   1.9741   6000.32    -0.00   -2033.10     0.06
 21   2.8502  10786.30    -0.12   -3732.99    -0.05
 22   2.8502  10786.31    -0.04   -3732.95    -0.03
 23   2.9379   9310.64     0.01   -3238.86    -0.03
 24   2.9403   9282.01     0.12   -3220.34     0.02
 25   2.9515   9155.58     0.06   -3129.99    -0.03
 26   3.0143   8780.53     0.00   -2565.94    -0.05
 27   3.0146   8780.03    -0.03   -2562.87    -0.04

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        47.539    47.556    47.523
ecceobj         0.142     0.143     0.141
incobj         29.050    29.049    29.050
qmin           39.363    39.285    39.400
qmax           55.695    55.736    55.686
amean          47.323    47.340    47.307
amin           46.926    46.943    46.901
amax           47.783    47.797    47.759
emean           0.151     0.152     0.150
emin            0.135     0.136     0.135
emax            0.166     0.166     0.166
imean          27.654    27.650    27.659
imin           27.327    27.307    27.325
imax           27.983    27.984    27.998
excite_mean     0.488     0.488     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       170.4     170.0     170.8
kozaiamp        180.0     179.9     179.8