Orbit Fit and Astrometric record for 15KH175

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: 15KH175   
# Created Tue Apr 23 01:10:42 2019
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   34
# Arc:   2.98y
# First observation: 2014/05/30
#  Last observation: 2017/05/21
Preliminary a, adot, b, bdot, g, gdot:
  -0.000038   0.025726  -0.000004   0.007653   0.025877   0.000000
# Chi-squared of fit:    16.73 DOF:   62 RMS:  0.12
# Min/Max residuals:    -0.37    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.593095E-05  2.586559E-02  4.037298E-06  7.711351E-03  2.637046E-02  1.534674E-03
# Covariance matrix:
  2.5451E-13 -2.8297E-13  2.0512E-14 -4.8403E-14 -7.1059E-14 -2.4679E-12
 -2.8297E-13  4.9305E-13 -4.6580E-14  1.0968E-13  1.5579E-13  5.5939E-12
  2.0512E-14 -4.6580E-14  1.7923E-13 -1.1232E-13 -1.9848E-14 -6.3371E-13
 -4.8403E-14  1.0968E-13 -1.1232E-13  1.0645E-13  5.4238E-14  1.5170E-12
 -7.1059E-14  1.5579E-13 -1.9848E-14  5.4238E-14  2.4560E-13  2.7114E-12
 -2.4679E-12  5.5939E-12 -6.3371E-13  1.5170E-12  2.7114E-12  7.7186E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.104209 -124.922594   -0.241648    0.104857   -0.980004  2456807.906448
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           58.16725 +/-     0.076
Argument of Peri:      314.46213 +/-     0.109
Long of Asc Node:      216.23786 +/-     0.001
Inclination:            17.58893 +/-     0.001
Eccentricity:         0.07260553 +/-    0.0003
Semi-Major Axis:     40.28080419 +/-    0.0034
Time of Perihelion: 2441712.8487 +/-      19.6
Perihelion:          37.35619514 +/-    0.0129
Aphelion:            43.20541323 +/-    0.0130
Period (y)              255.6557 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -21.95306238 +/-    0.0004
Ecliptic Y          -31.86127062 +/-    0.0006
Ecliptic Z            4.03264543 +/-    0.0001
Ecliptic XDOT         0.00215464 +/-    0.0000
Ecliptic YDOT        -0.00160107 +/-    0.0000
Ecliptic ZDOT         0.00081314 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.90166761 +/-    0.0005
Geocenter to KBO     37.92121382 +/-    0.0007
# Hcoef:  8.90

The following table shows the complete astrometric record for 15KH175. 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 (15KH175) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.40567  15 36 56.697  -13 06 18.00  24.1r 15KH175   568  C~2nvg      
2014 06  01.33220  15 36 47.130  -13 05 40.91  23.0r 15KH175   568  C~2nvg      
2014 06  01.37504  15 36 46.948  -13 05 39.89  24.5r 15KH175   568  C~2nvg      
2014 06  01.41793  15 36 46.740  -13 05 39.06  24.5r 15KH175   568  C~2nvg      
2014 07  19.34581  15 33 50.505  -12 56 30.74  24.2r 15KH175   568  C~2nvg      
2015 02  23.64017  15 48 34.381  -13 34 26.18  24.9r 15KH175   568  C~2nvg      
2015 04  12.55771  15 47 06.795  -13 19 08.14  25.0r 15KH175   568  C~2nvg      
2015 04  13.59705  15 47 02.728  -13 18 43.64  24.7r 15KH175   568  C~2nvg      
2015 05  21.32647  15 44 03.809  -13 04 11.04  24.8r 15KH175   568  C~2nvg      
2015 05  21.36772  15 44 03.590  -13 04 10.33  24.7r 15KH175   568  C~2nvg      
2015 05  21.40894  15 44 03.387  -13 04 09.48  24.7r 15KH175   568  C~2nvg      
2015 05  22.48541  15 43 57.858  -13 03 46.91  24.7r 15KH175   568  C~2nvg      
2015 05  25.47599  15 43 42.579  -13 02 45.11  24.8r 15KH175   568  C~2nvg      
2015 06  20.36530  15 41 39.564  -12 55 25.40  24.6r 15KH175   568  C~2nvg      
2015 06  20.40617  15 41 39.369  -12 55 24.95  24.7r 15KH175   568  C~2nvg      
2015 06  23.42643  15 41 26.896  -12 54 46.85  24.8r 15KH175   568  C~2nvg      
2015 07  11.29956  15 40 25.450  -12 52 09.32  24.5r 15KH175   568  C~2nvg      
2015 07  11.30916  15 40 25.414  -12 52 09.26  25.2r 15KH175   568  C~2nvg      
2015 07  18.36957  15 40 07.963  -12 51 40.40  25.0r 15KH175   568  C~2nvg      
2016 02  06.64935  15 54 16.753  -13 31 06.52  25.0w 15KH175   568  C~2nvg      
2016 03  17.61801  15 54 33.301  -13 22 01.73  24.8w 15KH175   568  C~2nvg      
2016 03  17.63019  15 54 33.299  -13 22 01.47  24.8w 15KH175   568  C~2nvg      
2016 03  17.64294  15 54 33.284  -13 22 01.16  25.4w 15KH175   568  C~2nvg      
2016 04  03.57496  15 53 52.123  -13 16 06.26  23.8w 15KH175   568  C~2nvg      
2016 04  08.62452  15 53 35.186  -13 14 12.01  25.1w 15KH175   568  C~2nvg      
2016 04  09.56848  15 53 31.809  -13 13 50.51  25.0w 15KH175   568  C~2nvg      
2016 04  29.50952  15 52 07.691  -13 06 05.98  24.5w 15KH175   568  C~2nvg      
2016 04  29.52172  15 52 07.636  -13 06 05.96  25.0w 15KH175   568  C~2nvg      
2016 05  04.48214  15 51 43.800  -13 04 11.28  25.5w 15KH175   568  C~2nvg      
2016 05  04.49428  15 51 43.744  -13 04 10.99  25.5w 15KH175   568  C~2nvg      
2016 07  04.31842  15 47 00.120  -12 47 20.19  25.0w 15KH175   568  C~2nvg      
2016 07  05.39078  15 46 56.544  -12 47 12.40  25.3w 15KH175   568  C~2nvh      
2017 03  28.61223  16 00 23.829  -13 11 38.46  24.9w 15KH175   568  C~2nvh      
2017 05  21.54276  15 56 36.388  -12 51 40.06  25.0w 15KH175   568  C~2nvh      

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    -0.09       0.00     0.12
  2   0.0053   -144.57    -0.37       3.37    -0.32
  3   0.0054   -147.39     0.05       3.74    -0.01
  4   0.0055   -150.54     0.16       3.84     0.02
  5   0.1367  -2782.99     0.29     -69.47     0.16
  6   0.7371  10308.02    -0.09     680.06    -0.02
  7   0.8683   8854.51    -0.04    1290.30    -0.14
  8   0.8712   8791.05    -0.21    1300.88    -0.02
  9   0.9745   6044.99    -0.07    1561.66     0.23
 10   0.9746   6041.71    -0.09    1561.63     0.06
 11   0.9747   6038.63     0.09    1561.78     0.08
 12   0.9776   5954.75    -0.00    1565.42    -0.02
 13   0.9858   5723.10    -0.07    1574.86     0.05
 14   1.0567   3871.09     0.12    1592.30     0.07
 15   1.0568   3868.21    -0.13    1592.08    -0.08
 16   1.0651   3681.91    -0.05    1587.32     0.05
 17   1.1140   2771.05     0.09    1533.92    -0.00
 18   1.1140   2770.52    -0.04    1533.86    -0.03
 19   1.1334   2515.50     0.21    1503.07    -0.02
 20   1.6899  15153.97     0.12    1974.85    -0.03
 21   1.7993  15272.46    -0.04    2560.73    -0.14
 22   1.7994  15272.37     0.23    2560.97    -0.05
 23   1.7994  15272.09     0.32    2561.23     0.03
 24   1.8458  14605.14    -0.01    2777.57    -0.16
 25   1.8596  14337.61     0.07    2835.32     0.07
 26   1.8622  14284.55     0.05    2845.57    -0.04
 27   1.9168  12978.42    -0.16    3030.31     0.05
 28   1.9168  12977.63    -0.05    3030.16    -0.20
 29   1.9304  12611.27    -0.00    3065.55     0.12
 30   1.9304  12610.40     0.06    3065.66     0.14
 31   2.0970   8331.39    -0.12    3129.57    -0.03
 32   2.0999   8278.57     0.00    3125.41     0.02
 33   2.8288  20176.12    -0.08    4274.30     0.04
 34   2.9764  16644.93    -0.12    4735.66     0.01

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.

15KH175    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.059    40.069    40.048
ecceobj         0.067     0.068     0.067
incobj         17.642    17.642    17.642
qmin           36.753    36.766    36.767
qmax           44.057    44.097    44.019
amean          40.324    40.335    40.309
amin           40.008    40.019    39.989
amax           40.658    40.663    40.638
emean           0.069     0.070     0.068
emin            0.055     0.055     0.055
emax            0.084     0.085     0.084
imean          18.840    18.837    18.842
imin           18.028    18.033    18.022
imax           19.561    19.565    19.570
excite_mean     0.330     0.330     0.330
fracstop        1.000     1.000     1.000
cjmean          2.931     2.931     2.931

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       176.8     176.2     176.8
kozaiamp        180.0     180.0     180.0