Orbit Fit and Astrometric record for 15KX174

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: 15KX174   
# Created Tue Nov 30 02:13:26 2021
# Orbit generated from Bernstein formalism
# Fitting     38 observations of     38
# Arc:   3.16y
# First observation: 2014/05/30
#  Last observation: 2017/07/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000179   0.022580  -0.000036  -0.003769   0.023003   0.000000
# Chi-squared of fit:     9.85 DOF:     70 RMS:  0.09
# Min/Max residuals:    -0.38    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.584952E-05  2.307499E-02 -2.857699E-06 -3.858129E-03  2.342273E-02  5.255091E-03
# Covariance matrix:
  1.8116E-13 -2.0290E-13 -9.9831E-15  2.2730E-14 -6.7852E-14 -2.1584E-12
 -2.0290E-13  4.0149E-13  2.6341E-14 -6.0972E-14  1.5509E-13  5.7544E-12
 -9.9831E-15  2.6341E-14  1.3531E-13 -8.1315E-14  1.4010E-14  4.4989E-13
  2.2730E-14 -6.0972E-14 -8.1315E-14  7.3553E-14 -2.7947E-14 -1.0353E-12
 -6.7852E-14  1.5509E-13  1.4010E-14 -2.7947E-14  1.9026E-13  2.7940E-12
 -2.1584E-12  5.7544E-12  4.4989E-13 -1.0353E-12  2.7940E-12  9.7924E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.513395 -125.485257   -0.251172    0.128615   -0.974764  2456807.897968
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           41.85009 +/-     0.018
Argument of Peri:       73.17786 +/-     0.034
Long of Asc Node:       92.13280 +/-     0.002
Inclination:            12.01102 +/-     0.000
Eccentricity:         0.27488882 +/-    0.0004
Semi-Major Axis:     51.90861451 +/-    0.0140
Time of Perihelion: 2440920.4643 +/-       1.9
Perihelion:          37.63951649 +/-    0.0248
Aphelion:            66.17771253 +/-    0.0288
Period (y)              373.9963 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.93807853 +/-    0.0005
Ecliptic Y          -35.41039474 +/-    0.0006
Ecliptic Z            5.58246508 +/-    0.0001
Ecliptic XDOT         0.00180324 +/-    0.0000
Ecliptic YDOT        -0.00211324 +/-    0.0000
Ecliptic ZDOT        -0.00036665 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.66884167 +/-    0.0006
Geocenter to KBO     42.69357819 +/-    0.0008
# Hcoef:  7.33

The following table shows the complete astrometric record for 15KX174. 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 (15KX174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.39719  15 36 04.546  -11 36 14.55  23.6r 15KX174   568  C~2lVL      
2014 05  31.43578  15 35 59.874  -11 36 03.09  22.2r 15KX174   568  C~2lVL      
2014 06  01.32413  15 35 55.948  -11 35 53.64  23.9r 15KX174   568  C~2lVL      
2014 06  01.36716  15 35 55.764  -11 35 53.20  23.8r 15KX174   568  C~2lVL      
2014 06  01.41010  15 35 55.568  -11 35 52.80  23.9r 15KX174   568  C~2lVL      
2014 06  22.36436  15 34 30.152  -11 33 13.23  21.7r 15KX174   568  C~2lVL      
2014 07  19.33752  15 33 15.887  -11 33 24.48  24.0r 15KX174   568  C~2lVL      
2015 03  19.64496  15 45 39.172  -12 25 02.23  23.9r 15KX174   568  C~2lVL      
2015 03  22.54324  15 45 33.502  -12 24 23.69  24.1r 15KX174   568  C~2lVL      
2015 04  13.57652  15 44 29.989  -12 18 54.01  23.9r 15KX174   568  C~2lVL      
2015 04  13.61766  15 44 29.837  -12 18 53.41  23.9r 15KX174   568  C~2lVL      
2015 04  18.56046  15 44 11.412  -12 17 34.56  23.8r 15KX174   568  C~2lVL      
2015 05  21.32647  15 41 48.055  -12 09 22.67  23.6r 15KX174   568  C~2lVL      
2015 05  21.36772  15 41 47.855  -12 09 22.16  23.6r 15KX174   568  C~2lVL      
2015 05  21.40894  15 41 47.665  -12 09 21.62  23.6r 15KX174   568  C~2lVL      
2015 05  22.48541  15 41 42.695  -12 09 07.92  23.8r 15KX174   568  C~2lVL      
2015 05  25.47599  15 41 28.966  -12 08 30.70  23.8r 15KX174   568  C~2lVL      
2015 06  20.36530  15 39 38.519  -12 04 40.39  23.9r 15KX174   568  C~2lVL      
2015 06  20.40617  15 39 38.361  -12 04 40.27  24.0r 15KX174   568  C~2lVL      
2015 06  23.42643  15 39 27.148  -12 04 25.93  23.8r 15KX174   568  C~2lVL      
2015 07  11.29956  15 38 31.843  -12 04 03.12  23.9r 15KX174   568  C~2lVL      
2015 07  11.30916  15 38 31.820  -12 04 03.13  23.8r 15KX174   568  C~2lVL      
2015 07  18.36957  15 38 16.010  -12 04 24.64  23.8r 15KX174   568  C~2lVL      
2016 02  06.63317  15 50 29.402  -12 59 52.66  24.3w 15KX174   568  C~2lVL      
2016 02  12.61871  15 50 40.004  -12 59 40.45  24.2w 15KX174   568  C~2lVL      
2016 03  15.62688  15 50 39.984  -12 55 35.96  23.8w 15KX174   568  C~2lVL      
2016 04  03.57496  15 49 57.792  -12 51 25.82  24.2w 15KX174   568  C~2lVL      
2016 04  08.62452  15 49 42.077  -12 50 11.40  24.2w 15KX174   568  C~2lVL      
2016 04  09.56848  15 49 38.967  -12 49 57.33  23.9w 15KX174   568  C~2lVL      
2016 04  29.50952  15 48 22.173  -12 44 53.70  24.0w 15KX174   568  C~2lVL      
2016 05  04.48214  15 48 00.546  -12 43 39.57  24.1w 15KX174   568  C~2lVL      
2016 05  30.45796  15 46 02.236  -12 38 02.48  24.1w 15KX174   568  C~2lVL      
2016 07  04.31032  15 43 46.372  -12 34 33.52  23.9w 15KX174   568  C~2lVL      
2016 07  04.31842  15 43 46.342  -12 34 33.62  24.1w 15KX174   568  C~2lVL      
2016 07  05.38268  15 43 43.165  -12 34 32.98  24.1w 15KX174   568  C~2lVL      
2016 07  05.39078  15 43 43.145  -12 34 32.98  24.0w 15KX174   568  C~2lVL      
2017 03  28.60754  15 55 09.429  -13 22 16.06  23.6w 15KX174   568  C~2lVL      
2017 07  28.31662  15 47 48.997  -13 05 36.85        15KX174   568  C~2lVL      

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    -0.06       0.00     0.05
     2   0.0028    -69.41    -0.38      -5.05     0.01
     3   0.0053   -127.70    -0.06      -9.47    -0.02
     4   0.0054   -130.43     0.09      -9.68    -0.00
     5   0.0055   -133.33     0.08      -9.97    -0.06
     6   0.0629  -1390.67     0.30    -151.72     0.29
     7   0.1367  -2448.23     0.07    -421.98     0.06
     8   0.8029   8884.92    -0.01    -896.60    -0.11
     9   0.8108   8795.11    -0.03    -877.92    -0.12
    10   0.8711   7812.25    -0.07    -768.77    -0.05
    11   0.8712   7809.94    -0.07    -768.69    -0.10
    12   0.8848   7528.65     0.16    -753.59    -0.08
    13   0.9745   5368.12     0.08    -757.38     0.07
    14   0.9746   5365.15    -0.01    -757.56     0.03
    15   0.9747   5362.31     0.03    -757.68     0.05
    16   0.9777   5288.19    -0.03    -761.16    -0.08
    17   0.9858   5083.58    -0.04    -771.43    -0.00
    18   1.0567   3453.76    -0.00    -922.86     0.05
    19   1.0568   3451.48     0.02    -923.28    -0.05
    20   1.0651   3288.14    -0.07    -947.61    -0.03
    21   1.1140   2493.79    -0.06   -1114.59     0.04
    22   1.1141   2493.46    -0.03   -1114.68     0.06
    23   1.1334   2272.98     0.01   -1189.79    -0.01
    24   1.6899  13507.25    -0.01   -1980.51    -0.03
    25   1.7063  13656.24     0.05   -1934.06    -0.05
    26   1.7939  13601.23     0.01   -1695.21     0.12
    27   1.8458  12941.30     0.04   -1588.47    -0.08
    28   1.8596  12699.72    -0.04   -1567.17    -0.03
    29   1.8622  12652.06     0.04   -1563.60    -0.06
    30   1.9168  11485.23     0.00   -1519.12    -0.01
    31   1.9304  11159.26     0.09   -1517.98     0.02
    32   2.0015   9392.08    -0.03   -1580.55    -0.03
    33   2.0970   7404.62     0.02   -1830.17     0.07
    34   2.0970   7404.21    -0.03   -1830.36    -0.05
    35   2.0999   7358.73    -0.06   -1840.39     0.01
    36   2.0999   7358.45     0.00   -1840.45     0.02
    37   2.8288  17817.72    -0.05   -2392.30    -0.14
    38   3.1620  11291.97     0.03   -2841.61     0.24

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.

15KX174    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        51.456    51.495    51.417
ecceobj         0.269     0.270     0.267
incobj         12.006    12.006    12.006
qmin           37.162    37.078    37.152
qmax           67.403    67.573    67.242
amean          51.943    51.982    51.902
amin           51.427    51.462    51.376
amax           52.561    52.582    52.534
emean           0.270     0.271     0.269
emin            0.258     0.259     0.256
emax            0.283     0.285     0.282
imean          10.660    10.663    10.654
imin           10.307    10.312    10.271
imax           11.274    11.264    11.254
excite_mean     0.328     0.329     0.326
fracstop        1.000     1.000     1.000
cjmean          3.065     3.065     3.066

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       176.9     175.7     179.8
kozaiamp        180.0     180.0     179.9