Orbit Fit and Astrometric record for 15VJ169

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: 15VJ169   
# Created Tue Apr  1 01:10:40 2025
# Orbit generated from Bernstein formalism
# Fitting     36 observations of     37
# Arc:   2.19y
# First observation: 2014/11/17
#  Last observation: 2017/01/26
Preliminary a, adot, b, bdot, g, gdot:
  -0.000045   0.025393  -0.000001  -0.000845   0.025136   0.000000
# Chi-squared of fit:    11.06 DOF:     66 RMS:  0.10
# Min/Max residuals:    -0.49    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.575814E-05  2.546445E-02 -2.253309E-07 -8.488675E-04  2.520358E-02 -8.738267E-04
# Covariance matrix:
  2.7344E-13 -3.7287E-13 -2.5096E-15  8.2171E-15 -1.6732E-13 -4.6418E-12
 -3.7287E-13  7.7397E-13  6.8276E-15 -2.1269E-14  3.7030E-13  1.2223E-11
 -2.5096E-15  6.8276E-15  1.6619E-13 -1.1032E-13  3.1126E-15  1.2598E-13
  8.2171E-15 -2.1269E-14 -1.1032E-13  9.7679E-14 -1.1464E-14 -3.8477E-13
 -1.6732E-13  3.7030E-13  3.1126E-15 -1.1464E-14  3.0698E-13  6.2324E-12
 -4.6418E-12  1.2223E-11  1.2598E-13 -3.8477E-13  6.2324E-12  2.2265E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.224454   46.710793   -0.133597   -0.037907   -0.979681  2456978.787348
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:          330.08251 +/-     0.406
Argument of Peri:      262.53359 +/-     0.473
Long of Asc Node:      178.16050 +/-     0.011
Inclination:             2.88668 +/-     0.000
Eccentricity:         0.06312800 +/-    0.0003
Semi-Major Axis:     42.96088322 +/-    0.0033
Time of Perihelion: 2465517.8369 +/-     116.0
Perihelion:          40.24884851 +/-    0.0147
Aphelion:            45.67291794 +/-    0.0148
Period (y)              281.5905 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           27.75710403 +/-    0.0006
Ecliptic Y           29.66589591 +/-    0.0006
Ecliptic Z           -1.54005447 +/-    0.0000
Ecliptic XDOT        -0.00208528 +/-    0.0000
Ecliptic YDOT         0.00182011 +/-    0.0000
Ecliptic ZDOT        -0.00008836 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.65579875 +/-    0.0006
Geocenter to KBO     39.67690642 +/-    0.0009
# Hcoef:  8.52

The following table shows the complete astrometric record for 15VJ169. 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 (15VJ169) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.28657  02 59 35.961  +14 41 50.45  24.6r 15VJ169   568  C~2nw1      
2014 11  17.39535  02 59 35.409  +14 41 48.28  24.5r 15VJ169   568  C~2nw1      
2014 11  17.50914  02 59 34.833  +14 41 45.74  24.5r 15VJ169   568  C~2nw1      
2014 11  19.30032  02 59 25.986  +14 41 08.20  24.3r 15VJ169   568  C~2nw1      
2014 11  23.40372  02 59 05.912  +14 39 43.67  24.3r 15VJ169   568  C~2nw1      
2015 08  12.57765  03 10 11.981  +15 26 58.51  25.0w 15VJ169   568  C~2nw1      
2015 09  07.53691  03 10 04.176  +15 24 47.55  24.6w 15VJ169   568  C~2nw1      
2015 09  12.53366  03 09 55.359  +15 23 53.95  24.8w 15VJ169   568  C~2nw1      
2015 10  07.47747  03 08 40.544  +15 17 33.99  24.8w 15VJ169   568  C~2nw1      
2015 10  08.48165  03 08 36.593  +15 17 15.53  24.7w 15VJ169   568  C~2nw1      
2015 10  08.53987  03 08 36.375  +15 17 14.49  25.7w 15VJ169   568  C~2nw1      
2015 10  08.55151  03 08 36.347  +15 17 14.33  25.5w 15VJ169   568  C~2nw1      
2015 10  08.56473  03 08 36.276  +15 17 13.81  24.7w 15VJ169   568  C~2nw1      
2015 11  06.29678  03 06 23.870  +15 07 24.60  24.6r 15VJ169   568  C~2nw1      
2015 11  06.36009  03 06 23.575  +15 07 23.24  24.1r 15VJ169   568  C~2nw1      
2015 11  06.43072  03 06 23.207  +15 07 21.54  24.6r 15VJ169   568  C~2nw1      
2015 11  06.50005  03 06 22.859  +15 07 20.16  24.6r 15VJ169   568  C~2nw1      
2015 11  07.51946  03 06 17.740  +15 06 58.34  24.8w 15VJ169   568  C~2nw1      
2015 11  17.28542  03 05 28.595  +15 03 32.00  24.7w 15VJ169   568  C~2nw1      
2015 11  17.33469  03 05 28.343  +15 03 30.93  24.6w 15VJ169   568  C~2nw1      
2015 12  06.41351  03 03 56.986  +14 57 22.71  24.8w 15VJ169   568  C~2nw1      
2015 12  13.34802  03 03 27.334  +14 55 28.13  24.8w 15VJ169   568  C~2nw1      
2015 12  13.40657  03 03 27.090  +14 55 27.19  25.0w 15VJ169   568  C~2nw1      
2016 01  01.40134  03 02 21.777  +14 51 32.11  24.9w 15VJ169   568  C~2nw1      
2016 01  07.34755  03 02 07.189  +14 50 45.89  24.5w 15VJ169   568  C~2nw1      
2016 02  04.27768  03 01 43.591  +14 50 28.97  24.8w 15VJ169   568  C~2nw1      
2016 02  10.26747  03 01 48.747  +14 51 09.33  24.8w 15VJ169   568  C~2nw1      
2016 09  26.60468  03 15 07.875  +15 41 00.64  24.6w 15VJ169   568  C~2nw1      
2016 10  10.41386  03 14 18.096  +15 37 06.25  24.8w 15VJ169   568  C~2nw1      
2016 10  10.47261  03 14 17.853  +15 37 05.15  24.9w 15VJ169   568  C~2nw1      
2016 10  27.50838  03 13 01.532  +15 31 29.85  24.6w 15VJ169   568  C~2nw1      
2016 11  03.53341  03 12 26.994  +15 29 03.98  24.6w 15VJ169   568  C~2nw1      
2016 12  28.40571  03 08 20.071  +15 13 11.75  25.3w 15VJ169   568  C~2nw1      
2016 12  29.36323  03 08 17.134  +15 13 01.98  24.8w 15VJ169   568  C~2nw1      
2017 01  01.26044  03 08 08.704  +15 12 34.62  24.9w 15VJ169   568  C~2nw1      
2017 01  02.37026  03 08 05.646  +15 12 25.00  24.9w 15VJ169   568  C~2nw1      
2017 01  26.26424  03 07 27.464  +15 10 57.87  24.6w 15VJ169   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     0.04       0.00    -0.06
     2   0.0003     -8.30     0.03       0.18     0.06
     3   0.0006    -17.03    -0.03       0.10    -0.06
     4   0.0055   -150.77    -0.06       0.29    -0.01
     5   0.0167   -454.08    -0.03       1.44    -0.12
     6   0.7345   9608.48    -0.49      57.92     0.03
     7   0.8056   9464.10     0.18     -37.73     0.06
     8   0.8193   9326.57     0.03     -54.84    -0.01
     9   0.8876   8179.78    -0.04    -126.84    -0.00
    10   0.8903   8119.66    -0.07    -129.05     0.12
    11   0.8905   8116.33     0.19    -129.19     0.09
    12   0.8905   8115.90 (   0.47)   -129.23 (   0.07)
    13   0.8906   8114.77     0.16    -129.45    -0.13
    14   0.9692   6107.74    -0.20    -172.17     0.15
    15   0.9694   6103.25     0.16    -172.30     0.03
    16   0.9696   6097.66     0.00    -172.48    -0.13
    17   0.9698   6092.43     0.11    -172.42    -0.05
    18   0.9726   6015.09     0.11    -173.03    -0.06
    19   0.9993   5273.47     0.08    -175.52     0.06
    20   0.9994   5269.66     0.04    -175.54     0.01
    21   1.0517   3895.16    -0.16    -163.43     0.22
    22   1.0707   3450.35     0.02    -154.22    -0.01
    23   1.0708   3446.69     0.01    -154.14    -0.04
    24   1.1228   2471.69    -0.11    -116.29     0.06
    25   1.1391   2255.65     0.07    -101.63    -0.01
    26   1.2156   1922.37    -0.04     -22.24    -0.03
    27   1.2320   2005.44     0.05      -4.40     0.02
    28   1.8599  13967.84     0.03    -275.69    -0.01
    29   1.8977  13209.14    -0.01    -310.92    -0.04
    30   1.8978  13205.45    -0.02    -311.05    -0.07
    31   1.9445  12048.85    -0.01    -340.25    -0.05
    32   1.9637  11527.11     0.02    -347.19    -0.03
    33   2.1139   7822.76    -0.06    -298.61     0.03
    34   2.1166   7779.14    -0.05    -296.42    -0.02
    35   2.1245   7654.10     0.01    -289.47    -0.02
    36   2.1275   7608.83     0.01    -286.65     0.02
    37   2.1930   7052.64     0.00    -219.45     0.00

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.

15VJ169    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.289    43.297    43.281
ecceobj         0.067     0.067     0.067
incobj          2.876     2.877     2.876
qmin           38.894    38.850    38.858
qmax           47.184    47.335    47.266
amean          42.948    42.956    42.940
amin           42.606    42.613    42.598
amax           43.298    43.325    43.313
emean           0.072     0.072     0.072
emin            0.051     0.051     0.051
emax            0.091     0.093     0.092
imean           3.897     3.894     3.899
imin            2.713     2.713     2.711
imax            4.859     4.854     4.868
excite_mean     0.099     0.099     0.099
fracstop        1.000     1.000     1.000
cjmean          3.077     3.077     3.077

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       184.9     185.1     184.7
kozaiamp        180.0     180.0     180.0