Orbit Fit and Astrometric record for 15VO167

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: 15VO167   
# Created Sun Apr 21 01:10:13 2019
# Orbit generated from Bernstein formalism
# Fitting   45 observations of   45
# Arc:   3.07y
# First observation: 2014/11/17
#  Last observation: 2017/12/13
Preliminary a, adot, b, bdot, g, gdot:
   0.000308   0.026287   0.000094   0.008316   0.025232   0.000000
# Chi-squared of fit:     8.76 DOF:   84 RMS:  0.08
# Min/Max residuals:    -0.16    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.663340E-05  2.702511E-02  5.505960E-06  8.556309E-03  2.566495E-02  7.623085E-03
# Covariance matrix:
  2.3817E-13 -2.6120E-13  2.9359E-14 -5.8748E-14 -1.2053E-13 -2.3921E-12
 -2.6120E-13  3.9909E-13 -5.4116E-14  1.0846E-13  1.9199E-13  4.4170E-12
  2.9359E-14 -5.4116E-14  1.3901E-13 -8.6949E-14 -2.7976E-14 -6.8966E-13
 -5.8748E-14  1.0846E-13 -8.6949E-14  8.4564E-14  5.5538E-14  1.3833E-12
 -1.2053E-13  1.9199E-13 -2.7976E-14  5.5538E-14  1.9073E-13  2.2599E-12
 -2.3921E-12  4.4170E-12 -6.8966E-13  1.3833E-12  2.2599E-12  5.6340E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.386604   47.077959   -0.127399   -0.023597   -0.980955  2456978.792408
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           23.32379 +/-     0.011
Argument of Peri:      300.39153 +/-     0.025
Long of Asc Node:       51.52554 +/-     0.000
Inclination:            17.62972 +/-     0.000
Eccentricity:         0.40585420 +/-    0.0003
Semi-Major Axis:     58.91411890 +/-    0.0159
Time of Perihelion: 2446269.5075 +/-       2.2
Perihelion:          35.00357646 +/-    0.0186
Aphelion:            82.82466135 +/-    0.0275
Period (y)              452.2070 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           27.09837879 +/-    0.0004
Ecliptic Y           29.33080908 +/-    0.0005
Ecliptic Z           -0.94266024 +/-    0.0000
Ecliptic XDOT        -0.00154673 +/-    0.0000
Ecliptic YDOT         0.00256982 +/-    0.0000
Ecliptic ZDOT         0.00089291 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.94379930 +/-    0.0005
Geocenter to KBO     38.96364202 +/-    0.0007
# Hcoef:  8.33

The following table shows the complete astrometric record for 15VO167. 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 (15VO167) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.29163  03 00 04.849  +15 36 16.68  24.0r 15VO167   568  C~2lVj      
2014 11  17.40051  03 00 04.282  +15 36 14.94  24.2r 15VO167   568  C~2lVj      
2014 11  17.51464  03 00 03.679  +15 36 13.11  24.2r 15VO167   568  C~2lVj      
2014 11  19.30670  02 59 54.522  +15 35 43.90  24.2r 15VO167   568  C~2lVj      
2014 11  23.41007  02 59 33.717  +15 34 38.36  24.0r 15VO167   568  C~2lVj      
2015 08  11.62323  03 10 34.502  +16 43 20.28  24.6w 15VO167   568  C~2lVj      
2015 09  07.53281  03 10 25.832  +16 44 15.62  24.2w 15VO167   568  C~2lVj      
2015 09  12.52956  03 10 16.552  +16 43 56.07  24.8w 15VO167   568  C~2lVj      
2015 10  07.47166  03 08 58.811  +16 40 18.38  24.4w 15VO167   568  C~2lVj      
2015 10  08.47003  03 08 54.762  +16 40 06.11  24.6w 15VO167   568  C~2lVj      
2015 10  08.47583  03 08 54.731  +16 40 06.08  24.5w 15VO167   568  C~2lVj      
2015 10  08.52822  03 08 54.518  +16 40 05.43  24.3w 15VO167   568  C~2lVj      
2015 10  08.53403  03 08 54.497  +16 40 05.37  24.4w 15VO167   568  C~2lVj      
2015 11  06.28626  03 06 37.820  +16 32 58.96  24.0r 15VO167   568  C~2lVj      
2015 11  06.34963  03 06 37.481  +16 32 58.00  24.4r 15VO167   568  C~2lVj      
2015 11  06.42017  03 06 37.120  +16 32 56.79  24.4r 15VO167   568  C~2lVj      
2015 11  06.48956  03 06 36.757  +16 32 55.51  24.1r 15VO167   568  C~2lVj      
2015 11  07.50772  03 06 31.480  +16 32 39.00  24.4w 15VO167   568  C~2lVj      
2015 11  17.27378  03 05 40.847  +16 30 00.46  24.3w 15VO167   568  C~2lVj      
2015 11  17.32308  03 05 40.583  +16 29 59.67  24.5w 15VO167   568  C~2lVj      
2015 12  13.33636  03 03 35.777  +16 23 46.43  24.5w 15VO167   568  C~2lVj      
2015 12  13.39494  03 03 35.514  +16 23 45.79  24.3w 15VO167   568  C~2lVj      
2016 01  01.38920  03 02 27.871  +16 20 56.13  23.7w 15VO167   568  C~2lVj      
2016 01  02.35555  03 02 25.186  +16 20 50.47  24.6w 15VO167   568  C~2lVj      
2016 01  07.33598  03 02 12.627  +16 20 28.19  24.4w 15VO167   568  C~2lVj      
2016 02  10.25584  03 01 51.674  +16 22 27.21  24.5w 15VO167   568  C~2lVj      
2016 09  07.55628  03 15 52.025  +17 35 15.51        15VO167   568  C~2lVj      
2016 09  26.61685  03 15 05.809  +17 33 35.96  24.6w 15VO167   568  C~2lVj      
2016 10  27.50259  03 12 55.694  +17 27 25.91  24.5w 15VO167   568  C~2lVj      
2016 10  27.52577  03 12 55.576  +17 27 25.44  25.0w 15VO167   568  C~2lVj      
2016 11  02.60863  03 12 24.932  +17 25 53.63  24.1w 15VO167   568  C~2lVj      
2016 11  03.52763  03 12 20.243  +17 25 39.57  24.6w 15VO167   568  C~2lVj      
2016 11  03.55078  03 12 20.109  +17 25 39.19  24.5w 15VO167   568  C~2lVj      
2016 12  28.38756  03 08 06.849  +17 13 26.15  24.5w 15VO167   568  C~2lVj      
2016 12  29.35312  03 08 03.785  +17 13 18.93  24.8w 15VO167   568  C~2lVj      
2016 12  29.37514  03 08 03.711  +17 13 18.65  24.5w 15VO167   568  C~2lVj      
2017 01  01.25010  03 07 55.084  +17 12 58.97  24.3w 15VO167   568  C~2lVj      
2017 01  02.36014  03 07 51.918  +17 12 52.11  24.6w 15VO167   568  C~2lVj      
2017 01  02.38235  03 07 51.851  +17 12 51.90  24.6w 15VO167   568  C~2lVj      
2017 01  26.25322  03 07 11.844  +17 12 16.28  24.6w 15VO167   568  C~2lVj      
2017 01  26.27742  03 07 11.827  +17 12 16.39  24.5w 15VO167   568  C~2lVj      
2017 09  16.61554  03 21 00.621  +18 24 33.70  24.6w 15VO167   568  C~2lVj      
2017 09  23.55460  03 20 42.848  +18 23 59.83  24.7w 15VO167   568  C~2lVj      
2017 12  13.37637  03 14 32.958  +18 06 53.70  24.4w 15VO167   568  C~2lVj      
2017 12  13.41395  03 14 32.797  +18 06 53.49  24.4w 15VO167   568  C~2lVj      

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     0.00       0.00    -0.05
  2   0.0003     -8.35     0.04       0.63    -0.03
  3   0.0006    -17.22    -0.04       1.33     0.05
  4   0.0055   -152.39     0.08      10.52    -0.00
  5   0.0168   -459.28     0.00      32.30    -0.05
  6   0.7319   9835.84     0.03    1372.81     0.02
  7   0.8056   9730.56    -0.01    1459.71    -0.05
  8   0.8193   9596.62    -0.03    1476.77    -0.06
  9   0.8876   8460.22    -0.15    1568.77    -0.03
 10   0.8903   8400.79    -0.03    1572.72    -0.04
 11   0.8903   8400.36    -0.11    1572.81     0.03
 12   0.8904   8397.23    -0.02    1573.02     0.00
 13   0.8905   8396.92     0.03    1573.04    -0.00
 14   0.9692   6387.79     0.05    1697.53     0.07
 15   0.9694   6382.84    -0.03    1697.94     0.15
 16   0.9696   6377.51     0.08    1698.20     0.04
 17   0.9697   6372.13     0.07    1698.39    -0.11
 18   0.9725   6294.56    -0.02    1703.28    -0.03
 19   0.9993   5550.23     0.13    1750.45    -0.09
 20   0.9994   5546.36     0.04    1750.74    -0.08
 21   1.0706   3716.61     0.06    1887.38    -0.08
 22   1.0708   3712.80    -0.07    1887.81     0.02
 23   1.1228   2730.21     0.03    1995.27     0.22
 24   1.1254   2691.51    -0.03    2000.60    -0.02
 25   1.1391   2511.66    -0.16    2029.57     0.09
 26   1.2319   2255.23    -0.10    2228.03     0.10
 27   1.8077  15071.07    -0.04    3172.30     0.02
 28   1.8599  14403.83     0.31    3249.76    -0.10
 29   1.9445  12502.71    -0.05    3384.70     0.06
 30   1.9445  12500.95    -0.09    3384.69    -0.06
 31   1.9612  12052.18    -0.06    3412.78     0.05
 32   1.9637  11983.51     0.04    3417.09     0.10
 33   1.9637  11981.56    -0.15    3417.24     0.14
 34   2.1139   8282.14     0.08    3686.33    -0.04
 35   2.1165   8237.85     0.00    3691.30     0.02
 36   2.1166   8236.75    -0.08    3691.32    -0.08
 37   2.1245   8112.24     0.10    3705.96    -0.05
 38   2.1275   8066.65     0.05    3711.68    -0.01
 39   2.1276   8065.67    -0.02    3711.74    -0.06
 40   2.1929   7503.56     0.06    3833.57    -0.02
 41   2.1930   7503.35     0.03    3833.74     0.03
 42   2.8318  20128.47    -0.03    4900.86     0.03
 43   2.8508  19872.85     0.03    4932.67    -0.04
 44   3.0721  14479.47    -0.09    5306.48    -0.14
 45   3.0722  14477.19     0.06    5306.88     0.09

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.

15VO167    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        59.770    59.819    59.722
ecceobj         0.415     0.415     0.414
incobj         17.590    17.590    17.590
qmin           33.969    34.032    33.910
qmax           85.765    85.561    86.337
amean          59.097    59.108    59.473
amin           58.239    58.286    58.293
amax           60.202    60.137    60.489
emean           0.406     0.404     0.411
emin            0.384     0.384     0.387
emax            0.426     0.423     0.429
imean          16.868    16.990    16.674
imin           15.830    15.747    15.562
imax           18.005    17.940    17.822
excite_mean     0.499     0.499     0.501
fracstop        1.000     1.000     1.000
cjmean          2.960     2.961     2.961

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       177.9     174.1     175.1
kozaiamp        180.0     180.0     179.9