Orbit Fit and Astrometric record for 15VH169

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: 15VH169   
# Created Tue Apr  1 01:10:40 2025
# Orbit generated from Bernstein formalism
# Fitting     34 observations of     35
# Arc:   2.19y
# First observation: 2014/11/17
#  Last observation: 2017/01/26
Preliminary a, adot, b, bdot, g, gdot:
   0.000014   0.022555   0.000001   0.000493   0.023683   0.000000
# Chi-squared of fit:    10.83 DOF:     62 RMS:  0.10
# Min/Max residuals:    -0.47    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.439058E-05  2.265696E-02  2.435098E-07  4.973942E-04  2.373840E-02 -6.797333E-04
# Covariance matrix:
  2.7141E-13 -3.6450E-13  2.7159E-15 -6.2358E-15 -1.7768E-13 -5.0248E-12
 -3.6450E-13  7.7967E-13 -7.3759E-15  1.7460E-14  4.2202E-13  1.3773E-11
  2.7159E-15 -7.3759E-15  1.7409E-13 -1.1193E-13 -4.4977E-15 -1.4869E-13
 -6.2358E-15  1.7460E-14 -1.1193E-13  9.6138E-14  9.5973E-15  3.5509E-13
 -1.7768E-13  4.2202E-13 -4.4977E-15  9.5973E-15  3.7852E-13  8.1452E-12
 -5.0248E-12  1.3773E-11 -1.4869E-13  3.5509E-13  8.1452E-12  2.7840E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.231375   46.667870   -0.134331   -0.038021   -0.979576  2456978.787348
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:          263.81758 +/-     0.251
Argument of Peri:       39.56738 +/-     0.242
Long of Asc Node:      106.76437 +/-     0.015
Inclination:             2.51984 +/-     0.000
Eccentricity:         0.02955000 +/-    0.0007
Semi-Major Axis:     42.93175855 +/-    0.0036
Time of Perihelion: 2484421.5924 +/-      71.6
Perihelion:          41.66312519 +/-    0.0313
Aphelion:            44.20039190 +/-    0.0313
Period (y)              281.3042 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.45784550 +/-    0.0007
Ecliptic Y           31.42534221 +/-    0.0008
Ecliptic Z           -1.64017369 +/-    0.0000
Ecliptic XDOT        -0.00195725 +/-    0.0000
Ecliptic YDOT         0.00173287 +/-    0.0000
Ecliptic ZDOT         0.00006048 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.10460490 +/-    0.0008
Geocenter to KBO     42.12583116 +/-    0.0011
# Hcoef:  8.45

The following table shows the complete astrometric record for 15VH169. 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 (15VH169) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.28657  02 59 26.236  +14 40 42.99  24.1r 15VH169   568  C~2nw1      
2014 11  17.39535  02 59 25.704  +14 40 40.94  24.6r 15VH169   568  C~2nw1      
2014 11  17.50914  02 59 25.146  +14 40 38.47  24.9r 15VH169   568  C~2nw1      
2014 11  19.30032  02 59 16.713  +14 40 04.09  24.8r 15VH169   568  C~2nw1      
2014 11  23.40372  02 58 57.554  +14 38 46.53  25.1r 15VH169   568  C~2nw1      
2015 09  07.53691  03 08 59.741  +15 23 42.85  24.7w 15VH169   568  C~2nw1      
2015 09  12.53366  03 08 51.012  +15 22 54.68  25.3w 15VH169   568  C~2nw1      
2015 10  07.47747  03 07 38.522  +15 17 07.52  24.9w 15VH169   568  C~2nw1      
2015 10  08.53987  03 07 34.491  +15 16 49.48  24.0w 15VH169   568  C~2nw1      
2015 10  08.55151  03 07 34.460  +15 16 49.27  24.3w 15VH169   568  C~2nw1      
2015 10  08.56473  03 07 34.408  +15 16 49.13  24.6w 15VH169   568  C~2nw1      
2015 11  06.29678  03 05 27.716  +15 07 46.16  24.7r 15VH169   568  C~2nw1      
2015 11  06.36009  03 05 27.394  +15 07 45.00  24.9r 15VH169   568  C~2nw1      
2015 11  06.43072  03 05 27.091  +15 07 43.78  24.3r 15VH169   568  C~2nw1      
2015 11  06.50005  03 05 26.715  +15 07 42.03  24.3r 15VH169   568  C~2nw1      
2015 11  07.51946  03 05 21.834  +15 07 22.12  25.2w 15VH169   568  C~2nw1      
2015 11  17.28542  03 04 34.960  +15 04 11.90  25.1w 15VH169   568  C~2nw1      
2015 11  17.33469  03 04 34.720  +15 04 10.95  25.0w 15VH169   568  C~2nw1      
2015 12  06.41351  03 03 07.612  +14 58 32.07  25.2w 15VH169   568  C~2nw1      
2015 12  13.34802  03 02 39.267  +14 56 47.34  25.4w 15VH169   568  C~2nw1      
2015 12  13.40657  03 02 39.070  +14 56 46.48  24.8w 15VH169   568  C~2nw1      
2016 01  01.40134  03 01 36.605  +14 53 12.94  25.0w 15VH169   568  C~2nw1      
2016 01  07.34755  03 01 22.542  +14 52 32.00  24.9w 15VH169   568  C~2nw1      
2016 02  04.27768  03 00 59.053  +14 52 28.32  25.3w 15VH169   568  C~2nw1      
2016 09  06.61716  03 14 05.744  +15 46 02.69        15VH169   568  C~2nw1      
2016 09  26.60468  03 13 20.868  +15 42 18.71  24.9w 15VH169   568  C~2nw1      
2016 10  10.41386  03 12 32.757  +15 38 43.76  25.4w 15VH169   568  C~2nw1      
2016 10  10.47261  03 12 32.520  +15 38 42.83  25.1w 15VH169   568  C~2nw1      
2016 10  27.50838  03 11 19.315  +15 33 33.79  25.4w 15VH169   568  C~2nw1      
2016 11  03.53341  03 10 46.288  +15 31 19.11  24.9w 15VH169   568  C~2nw1      
2016 12  28.40571  03 06 51.030  +15 16 42.11  25.6w 15VH169   568  C~2nw1      
2016 12  29.36323  03 06 48.227  +15 16 33.41  25.7w 15VH169   568  C~2nw1      
2017 01  01.26044  03 06 40.183  +15 16 08.76  25.1w 15VH169   568  C~2nw1      
2017 01  02.37026  03 06 37.274  +15 15 59.90  24.8w 15VH169   568  C~2nw1      
2017 01  26.26424  03 06 00.554  +15 14 46.85  24.9w 15VH169   568  C~2nw1      

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     0.14       0.00     0.02
     2   0.0003     -7.98     0.04       0.21     0.10
     3   0.0006    -16.45    -0.17       0.13    -0.10
     4   0.0055   -143.55     0.00       1.69     0.00
     5   0.0167   -432.17     0.10       5.83    -0.06
     6   0.8056   8702.60     0.01     177.51    -0.04
     7   0.8193   8567.79    -0.02     165.46     0.01
     8   0.8876   7462.55     0.08     117.27    -0.01
     9   0.8905   7401.44    -0.06     115.85     0.05
    10   0.8905   7400.95     0.13     115.78    -0.02
    11   0.8906   7400.18     0.15     115.85     0.06
    12   0.9692   5485.85     0.08      97.15    -0.05
    13   0.9694   5481.04    -0.10      97.32     0.09
    14   0.9696   5476.48 (   0.51)     97.35 (   0.08)
    15   0.9698   5470.76    -0.13      97.17    -0.13
    16   0.9726   5397.29    -0.01      97.52     0.04
    17   0.9993   4691.89     0.09     102.21     0.04
    18   0.9994   4688.28     0.07     102.26     0.03
    19   1.0517   3381.33    -0.01     126.79    -0.04
    20   1.0707   2957.56    -0.47     140.59     0.16
    21   1.0708   2954.57     0.03     140.56    -0.01
    22   1.1228   2025.43     0.03     188.39    -0.13
    23   1.1391   1818.23    -0.24     206.16     0.01
    24   1.2156   1490.30     0.14     298.09     0.03
    25   1.8051  13334.77    -0.17     279.33    -0.03
    26   1.8599  12647.88    -0.06     235.97     0.02
    27   1.8977  11918.30    -0.01     214.53    -0.02
    28   1.8978  11914.74    -0.03     214.55     0.05
    29   1.9445  10809.64     0.13     200.76    -0.02
    30   1.9637  10312.41     0.01     199.67     0.05
    31   2.1139   6793.85    -0.01     281.01    -0.10
    32   2.1166   6752.42     0.00     283.76     0.02
    33   2.1245   6633.60     0.05     291.98     0.10
    34   2.1275   6590.64     0.14     295.01    -0.10
    35   2.1930   6059.13     0.06     370.79     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.

15VH169    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.245    43.254    43.236
ecceobj         0.025     0.026     0.024
incobj          2.521     2.521     2.521
qmin           40.518    40.541    40.541
qmax           45.492    45.530    45.477
amean          42.934    42.943    42.926
amin           42.615    42.630    42.594
amax           43.270    43.288    43.265
emean           0.032     0.033     0.031
emin            0.012     0.013     0.012
emax            0.052     0.053     0.052
imean           1.365     1.363     1.367
imin            0.270     0.269     0.268
imax            2.190     2.187     2.194
excite_mean     0.040     0.041     0.040
fracstop        1.000     1.000     1.000
cjmean          3.087     3.087     3.087

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       192.3     192.3     192.4
kozaiamp        180.0     179.9     180.0