Orbit Fit and Astrometric record for 15KQ174

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: 15KQ174   
# Created Thu Apr 18 01:10:33 2019
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   3.24y
# First observation: 2014/05/29
#  Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
   0.000129   0.014530   0.000065   0.006239   0.018806   0.000000
# Chi-squared of fit:    13.32 DOF:   60 RMS:  0.11
# Min/Max residuals:    -0.26    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.239375E-05  1.477190E-02  6.562909E-06  6.344125E-03  1.878976E-02  1.715815E-03
# Covariance matrix:
  1.7043E-13 -1.8330E-13  2.1128E-14 -5.0976E-14 -6.7101E-14 -2.8746E-12
 -1.8330E-13  3.8023E-13 -5.8429E-14  1.4055E-13  1.5729E-13  7.9796E-12
  2.1128E-14 -5.8429E-14  1.3769E-13 -9.0463E-14 -2.9806E-14 -1.4217E-12
 -5.0976E-14  1.4055E-13 -9.0463E-14  1.1245E-13  7.3717E-14  3.4215E-12
 -6.7101E-14  1.5729E-13 -2.9806E-14  7.3717E-14  2.1647E-13  3.9264E-12
 -2.8746E-12  7.9796E-12 -1.4217E-12  3.4215E-12  3.9264E-12  1.9406E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.824062 -129.039173   -0.294868    0.132209   -0.961743  2456806.867238
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           75.88602 +/-     0.086
Argument of Peri:      290.00237 +/-     0.034
Long of Asc Node:      213.96874 +/-     0.001
Inclination:            24.40035 +/-     0.001
Eccentricity:         0.11375048 +/-    0.0009
Semi-Major Axis:     55.01480909 +/-    0.0126
Time of Perihelion: 2425382.6038 +/-      34.1
Perihelion:          48.75684841 +/-    0.0491
Aphelion:            61.27276977 +/-    0.0498
Period (y)              408.0634 +/-      0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -33.59265892 +/-    0.0008
Ecliptic Y          -41.89065942 +/-    0.0010
Ecliptic Z            7.24539532 +/-    0.0002
Ecliptic XDOT         0.00158981 +/-    0.0000
Ecliptic YDOT        -0.00145397 +/-    0.0000
Ecliptic ZDOT         0.00094996 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   54.18292935 +/-    0.0009
Geocenter to KBO     53.22048236 +/-    0.0013
# Hcoef:  7.40

The following table shows the complete astrometric record for 15KQ174. 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 (15KQ174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  29.36646  15 22 28.287  -10 26 19.68  24.4r 15KQ174   568  C~2lVK      
2014 05  29.40531  15 22 28.161  -10 26 18.76  24.0r 15KQ174   568  C~2lVK      
2014 05  29.44414  15 22 28.001  -10 26 18.22  24.4r 15KQ174   568  C~2lVK      
2014 05  30.47406  15 22 24.343  -10 26 02.99  24.6r 15KQ174   568  C~2lVK      
2014 06  21.36960  15 21 13.558  -10 21 40.30  24.9r 15KQ174   568  C~2lVK      
2014 06  21.40848  15 21 13.432  -10 21 39.88  24.8r 15KQ174   568  C~2lVK      
2014 07  19.28605  15 20 15.258  -10 19 29.17  25.1r 15KQ174   568  C~2lVK      
2015 03  19.60818  15 29 55.493  -10 40 13.69  23.5r 15KQ174   568  C~2lVK      
2015 04  13.53954  15 28 54.027  -10 32 11.89  24.7r 15KQ174   568  C~2lVK      
2015 04  13.58065  15 28 53.910  -10 32 10.80  24.7r 15KQ174   568  C~2lVK      
2015 05  22.46905  15 26 36.158  -10 19 58.58  25.0r 15KQ174   568  C~2lVK      
2015 05  24.38151  15 26 29.127  -10 19 27.80  25.0r 15KQ174   568  C~2lVK      
2015 05  24.42760  15 26 28.948  -10 19 26.90  24.6r 15KQ174   568  C~2lVK      
2015 05  24.46857  15 26 28.803  -10 19 26.30  24.7r 15KQ174   568  C~2lVK      
2015 05  25.45951  15 26 25.165  -10 19 10.80  24.5r 15KQ174   568  C~2lVK      
2015 05  26.45643  15 26 21.545  -10 18 55.25  24.6r 15KQ174   568  C~2lVK      
2015 06  20.34904  15 24 58.428  -10 13 44.96  24.6r 15KQ174   568  C~2lVK      
2015 06  20.38989  15 24 58.297  -10 13 44.59  24.8r 15KQ174   568  C~2lVK      
2015 06  23.40938  15 24 49.683  -10 13 18.48  24.6r 15KQ174   568  C~2lVK      
2015 07  11.28306  15 24 08.065  -10 11 40.32  24.4r 15KQ174   568  C~2lVK      
2015 07  18.35221  15 23 56.613  -10 11 29.00  24.5r 15KQ174   568  C~2lVK      
2016 03  13.63308  15 33 42.770  -10 33 18.29  25.0w 15KQ174   568  C~2lVK      
2016 03  17.57650  15 33 36.894  -10 32 09.11  25.0w 15KQ174   568  C~2lVK      
2016 04  03.51819  15 33 00.779  -10 26 49.00  24.1w 15KQ174   568  C~2lVK      
2016 04  08.56382  15 32 46.972  -10 25 09.12  24.9w 15KQ174   568  C~2lVK      
2016 04  08.56786  15 32 46.975  -10 25 09.29  24.9w 15KQ174   568  C~2lVK      
2016 05  04.38456  15 31 21.497  -10 16 42.36  24.1w 15KQ174   568  C~2lVK      
2016 05  30.49842  15 29 45.432  -10 09 25.22  24.8w 15KQ174   568  C~2lVK      
2016 05  30.50246  15 29 45.420  -10 09 25.40  25.2w 15KQ174   568  C~2lVK      
2017 03  30.56791  15 36 50.417  -10 19 36.97        15KQ174   568  C~2lVK      
2017 08  20.27585  15 31 01.761  -09 57 50.65  24.4w 15KQ174   568  C~2lVK      
2017 08  23.26141  15 31 04.455  -09 58 20.15  25.8w 15KQ174   568  C~2lVK      
2017 08  24.24592  15 31 05.463  -09 58 30.30  25.1w 15KQ174   568  C~2lVK      

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     0.01       0.00    -0.25
  2   0.0001     -2.03     0.14       0.42     0.13
  3   0.0002     -4.45    -0.11       0.34     0.02
  4   0.0030    -60.51     0.14       1.32    -0.02
  5   0.0630  -1137.32     0.09     -11.27     0.06
  6   0.0631  -1139.23    -0.12     -11.34     0.07
  7   0.1394  -2002.56    -0.09    -104.82     0.27
  8   0.8056   6594.31    -0.07     854.26    -0.18
  9   0.8738   5595.67     0.09    1094.86    -0.24
 10   0.8740   5593.72     0.19    1095.48     0.06
 11   0.9804   3441.87     0.00    1294.75    -0.05
 12   0.9857   3333.67    -0.01    1298.42    -0.05
 13   0.9858   3330.89    -0.15    1298.63     0.08
 14   0.9859   3328.67    -0.02    1298.67     0.06
 15   0.9886   3272.79    -0.14    1300.15    -0.11
 16   0.9913   3217.16     0.08    1301.75    -0.03
 17   1.0595   1951.56     0.12    1292.39     0.04
 18   1.0596   1949.60    -0.01    1292.26    -0.00
 19   1.0679   1819.96    -0.03    1285.36    -0.06
 20   1.1168   1200.69     0.11    1224.71     0.05
 21   1.1362   1034.27    -0.26    1192.79     0.08
 22   1.7913   9743.28    -0.00    2087.72     0.04
 23   1.8021   9642.05    -0.04    2133.47    -0.09
 24   1.8485   9045.71     0.09    2312.50     0.08
 25   1.8623   8823.26    -0.17    2359.02     0.13
 26   1.8623   8823.34     0.10    2358.87    -0.06
 27   1.9330   7473.66    -0.01    2537.78     0.08
 28   2.0045   5989.70    -0.02    2608.35     0.00
 29   2.0045   5989.57     0.07    2608.13    -0.22
 30   2.8370  12233.72    -0.11    3565.37     0.15
 31   3.2277   6909.99     0.15    3562.46     0.00
 32   3.2359   6955.92     0.14    3543.76     0.00
 33   3.2385   6972.89    -0.16    3537.63    -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.

15KQ174    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        54.660    54.696    54.625
ecceobj         0.109     0.112     0.107
incobj         24.490    24.490    24.489
qmin           48.277    48.103    48.333
qmax           62.308    62.543    62.102
amean          55.078    55.115    55.042
amin           54.594    54.630    54.553
amax           55.599    55.648    55.543
emean           0.109     0.111     0.107
emin            0.099     0.101     0.096
emax            0.121     0.124     0.118
imean          24.964    24.966    24.961
imin           24.810    24.803    24.797
imax           25.142    25.152    25.139
excite_mean     0.436     0.437     0.435
fracstop        1.000     1.000     1.000
cjmean          2.984     2.984     2.984

libcent 0      -180.0    -180.0      51.8
libamp  0      -180.0    -180.0      38.5
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       191.2     191.1     191.3
kozaiamp        180.0     180.0     180.0