Orbit Fit and Astrometric record for 14YD50

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: 14YD50    
# Created Sun Feb 18 02:38:09 2018
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   3.01y
# First observation: 2014/12/18
#  Last observation: 2017/12/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000055   0.042593   0.000001  -0.001498   0.030247   0.000000
# Chi-squared of fit:     6.21 DOF:   24 RMS:  0.11
# Min/Max residuals:    -0.23    0.26
# Exact a, adot, b, bdot, g, gdot:
  2.211801E-05  4.200809E-02 -6.339188E-07 -1.470459E-03  3.030660E-02 -2.956962E-03
# Covariance matrix:
  4.8964E-13  3.7817E-12  9.7720E-16 -1.4258E-13  1.2176E-12  3.0960E-11
  3.7817E-12  5.1709E-10  1.0979E-12 -1.9084E-11  1.1229E-10  4.0714E-09
  9.7720E-16  1.0979E-12  1.3049E-13 -9.5516E-14  2.3019E-13  8.6305E-12
 -1.4258E-13 -1.9084E-11 -9.5516E-14  8.0543E-13 -4.1461E-12 -1.5030E-10
  1.2176E-12  1.1229E-10  2.3019E-13 -4.1461E-12  2.4831E-11  8.8515E-10
  3.0960E-11  4.0714E-09  8.6305E-12 -1.5030E-10  8.8515E-10  3.2065E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -10.485977  117.181389    0.506420   -0.153234   -0.828820  2457010.074588
# Heliocentric elements and errors
Epoch:              2457010.5000  =  2014/12/19
Mean Anomaly:          358.13791 +/-     0.091
Argument of Peri:      270.60254 +/-     0.616
Long of Asc Node:      218.23167 +/-     0.006
Inclination:            10.44476 +/-     0.000
Eccentricity:         0.66515661 +/-    0.0003
Semi-Major Axis:    100.10493470 +/-    0.0424
Time of Perihelion: 2458902.7582 +/-      92.5
Perihelion:          33.51947565 +/-    0.0373
Aphelion:           166.69039375 +/-    0.0786
Period (y)             1001.5933 +/-      0.64
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -14.75916777 +/-    0.0024
Ecliptic Y           29.84369644 +/-    0.0047
Ecliptic Z           -6.00517523 +/-    0.0010
Ecliptic XDOT        -0.00324888 +/-    0.0000
Ecliptic YDOT        -0.00199389 +/-    0.0000
Ecliptic ZDOT        -0.00008191 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.83107122 +/-    0.0043
Geocenter to KBO     32.99611719 +/-    0.0054
# Hcoef:  6.67

The following table shows the complete astrometric record for 14YD50. 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 (14YD50) followed by the observatory code and reference code for the source of the astrometry.

2014 12  18.57381  07 48 42.165  +10 25 32.89  22.0r 14YD50    F51  C~1vXz      
2014 12  18.58490  07 48 42.107  +10 25 33.01  21.8r 14YD50    F51  C~1vXz      
2014 12  18.59598  07 48 42.066  +10 25 32.70  22.1r 14YD50    F51  C~1vXz      
2015 02  18.23747  07 43 11.692  +10 39 52.24  22.0w 14YD50    F51  C~1vXz      
2015 02  18.24951  07 43 11.635  +10 39 52.24  22.2w 14YD50    F51  C~1vXz      
2015 02  18.26148  07 43 11.570  +10 39 52.30  22.3w 14YD50    F51  C~1vXz      
2015 02  19.25104  07 43 07.254  +10 40 13.99  22.2w 14YD50    F51  C~1vXz      
2015 02  19.26307  07 43 07.184  +10 40 14.05  21.9w 14YD50    F51  C~1vXz      
2015 02  19.27520  07 43 07.134  +10 40 14.39  22.1w 14YD50    F51  C~1vXz      
2015 03  18.29472  07 41 42.898  +10 49 59.02  21.7w 14YD50    F51  C~1vXz      
2015 03  18.30729  07 41 42.893  +10 49 59.30  21.9w 14YD50    F51  C~1vXz      
2015 03  18.31964  07 41 42.864  +10 49 59.39  21.9w 14YD50    F51  C~1vXz      
2015 03  18.33208  07 41 42.840  +10 49 59.70  22.0w 14YD50    F51  C~1vXz      
2017 12  20.47225  08 17 18.285  +08 45 08.49  21.9R 14YD50    G37              
2017 12  20.51363  08 17 18.081  +08 45 08.71        14YD50    G37              

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    -0.04       0.00    -0.03
  2   0.0000     -0.86    -0.11      -0.04     0.06
  3   0.0001     -1.40     0.15      -0.46    -0.23
  4   0.1688  -4949.30    -0.02     -45.01     0.26
  5   0.1689  -4950.13    -0.01     -45.16    -0.00
  6   0.1689  -4951.08    -0.14     -45.28    -0.23
  7   0.1716  -5017.61     0.18     -35.42     0.16
  8   0.1716  -5018.63    -0.03     -35.54    -0.09
  9   0.1717  -5019.42     0.01     -35.34    -0.00
 10   0.2456  -6346.68    -0.15     316.71     0.05
 11   0.2457  -6346.80     0.11     316.97     0.12
 12   0.2457  -6347.24     0.04     316.98    -0.06
 13   0.2457  -6347.64     0.01     317.23    -0.01
 14   3.0059  26208.38     0.13    -957.06    -0.03
 15   3.0060  26205.32    -0.13    -957.47     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.

14YD50    quality flag:2

Type:       SCATNEAR  6:1EEEEE  SCATNEAR

axisobj        99.323   100.413    98.384
ecceobj         0.662     0.665     0.659
incobj         10.426    10.427    10.425
qmin           32.684    32.671    32.550
qmax          172.600   172.066   168.733
amean          99.391    99.419    94.931
amin           96.730    97.050    89.666
amax          103.126   102.874   101.132
emean           0.658     0.662     0.643
emin            0.644     0.651     0.620
emax            0.674     0.673     0.668
imean          12.358    11.330    12.463
imin           11.040    11.044    10.850
imax           13.909    11.651    13.623
excite_mean     0.692     0.690     0.678
fracstop        1.000     1.000     1.000
cjmean          2.974     2.975     2.972

libcent 0      -180.0     181.7    -180.0
libamp  0      -180.0     171.5    -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       166.7     166.9     194.6
kozaiamp        180.0     180.0     180.0