Orbit Fit and Astrometric record for 15KP166

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: 15KP166   
# Created Fri Jan 24 02:10:49 2025
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:  55.94d
# First observation: 2015/05/17
#  Last observation: 2015/07/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000018   0.173014  -0.000048   0.011151   0.079806   0.000000
# Chi-squared of fit:     2.83 DOF:     28 RMS:  0.07
# Min/Max residuals:    -0.16    0.17
# Exact a, adot, b, bdot, g, gdot:
  3.015369E-05  1.447147E-01  5.185709E-07  2.875896E-03  7.555240E-02  5.442015E-02
# Covariance matrix:
  2.6964E-13  1.9821E-11 -8.1402E-15  4.0542E-12  6.1986E-12  1.8713E-10
  1.9821E-11  4.5013E-08 -6.6004E-11  1.2630E-08  7.4836E-09 -4.7086E-07
 -8.1402E-15 -6.6004E-11  2.5132E-13 -1.9973E-11 -1.0421E-11  7.7374E-10
  4.0542E-12  1.2630E-08 -1.9973E-11  3.5945E-09  2.0559E-09 -1.3885E-07
  6.1986E-12  7.4836E-09 -1.0421E-11  2.0559E-09  1.3121E-09 -6.8272E-08
  1.8713E-10 -4.7086E-07  7.7374E-10 -1.3885E-07 -6.8272E-08  6.4239E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
   14.546532 -139.889206   -0.278728    0.243790   -0.939146  2457159.910491
# Heliocentric elements and errors
Epoch:              2457150.5000  =  2015/05/08
Mean Anomaly:           13.82087 +/-     0.669
Argument of Peri:       24.97565 +/-     1.313
Long of Asc Node:      136.51683 +/-     0.038
Inclination:            13.61195 +/-     0.001
Eccentricity:         0.59957074 +/-    0.0181
Semi-Major Axis:     28.79660185 +/-    0.9210
Time of Perihelion: 2454983.5783 +/-      14.3
Perihelion:          11.53100206 +/-    0.6383
Aphelion:            46.06220165 +/-    1.5626
Period (y)              154.5326 +/-      7.41
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -10.36382332 +/-    0.0047
Ecliptic Y           -9.09258727 +/-    0.0040
Ecliptic Z            3.32446018 +/-    0.0016
Ecliptic XDOT         0.00193593 +/-    0.0001
Ecliptic YDOT        -0.00522979 +/-    0.0001
Ecliptic ZDOT         0.00059627 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   14.18224286 +/-    0.0043
Geocenter to KBO     13.23584751 +/-    0.0063
# Hcoef: 12.24

The following table shows the complete astrometric record for 15KP166. 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 (15KP166) followed by the observatory code and reference code for the source of the astrometry.

2015 05  17.409713 14 48 56.310  -01 00 34.44  24.2g 15KP166   568  C~2TuP      
2015 05  17.473611 14 48 55.563  -01 00 31.99  24.3g 15KP166   568  C~2TuP      
2015 05  17.475730 14 48 55.541  -01 00 31.99  24.3g 15KP166   568  C~2TuP      
2015 05  17.482101 14 48 55.457  -01 00 31.60  24.2g 15KP166   568  C~2TuP      
2015 05  17.496936 14 48 55.293  -01 00 31.16  24.2g 15KP166   568  C~2TuP      
2015 05  21.378768 14 48 11.714  -00 58 15.55  23.5i 15KP166   568  C~2TuP      
2015 05  21.395625 14 48 11.525  -00 58 15.03  23.7i 15KP166   568  C~2TuP      
2015 05  21.403709 14 48 11.431  -00 58 14.75  23.5i 15KP166   568  C~2TuP      
2015 05  21.422549 14 48 11.218  -00 58 14.18  23.5i 15KP166   568  C~2TuP      
2015 05  26.29897  14 47 18.41   -00 55 56.6   23.1y 15KP166   T09  C~8WiZ      
2015 05  26.36079  14 47 17.75   -00 55 54.9   23.2y 15KP166   T09  C~8WiZ      
2015 07  12.25545  14 42 13.41   -01 06 44.8   24.4z 15KP166   T09  C~8WiZ      
2015 07  12.29403  14 42 13.36   -01 06 46.8   23.7z 15KP166   T09  C~8WiZ      
2015 07  12.31035  14 42 13.32   -01 06 47.7   24.0z 15KP166   T09  C~8WiZ      
2015 07  12.33192  14 42 13.28   -01 06 48.8   23.8z 15KP166   T09  C~8WiZ      
2015 07  12.33461  14 42 13.28   -01 06 48.8   23.7z 15KP166   T09  C~8WiZ      
2015 07  12.34809  14 42 13.27   -01 06 49.5   23.5z 15KP166   T09  C~8WiZ      

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     0.03       0.00     0.02
     2   0.0002    -11.42    -0.03      -1.07     0.03
     3   0.0002    -11.73     0.03      -1.18    -0.04
     4   0.0002    -13.05    -0.16      -1.19     0.06
     5   0.0002    -15.53    -0.01      -1.52    -0.02
     6   0.0109   -679.39     0.06     -71.22    -0.00
     7   0.0109   -682.25     0.09     -71.59    -0.01
     8   0.0109   -683.67     0.05     -71.75    -0.00
     9   0.0110   -686.89     0.07     -72.18    -0.03
    10   0.0243  -1483.23    -0.10    -182.18    -0.11
    11   0.0245  -1493.17    -0.03    -183.57     0.12
    12   0.1529  -5644.32     0.00   -2193.46     0.04
    13   0.1530  -5644.42     0.17   -2195.59     0.05
    14   0.1530  -5644.72    -0.02   -2196.63    -0.08
    15   0.1531  -5644.96    -0.11   -2197.87    -0.11
    16   0.1531  -5644.96    -0.10   -2197.87     0.04
    17   0.1532  -5644.89     0.06   -2198.58     0.07

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.

15KP166    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0