Orbit Fit and Astrometric record for 15VY165

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: 15VY165   
# Created Thu Apr 18 01:10:38 2019
# Orbit generated from Bernstein formalism
# Fitting   47 observations of   47
# Arc:   3.08y
# First observation: 2014/11/17
#  Last observation: 2017/12/16
Preliminary a, adot, b, bdot, g, gdot:
   0.000294   0.031207   0.000003   0.000568   0.027769   0.000000
# Chi-squared of fit:     4.51 DOF:   88 RMS:  0.05
# Min/Max residuals:    -0.12    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.848646E-05  3.199158E-02  4.010547E-07  5.823308E-04  2.817219E-02  6.254536E-03
# Covariance matrix:
  2.4273E-13 -2.7278E-13  2.2034E-15 -3.8311E-15 -1.0154E-13 -2.0569E-12
 -2.7278E-13  4.1987E-13 -3.9632E-15  6.8906E-15  1.8267E-13  3.6996E-12
  2.2034E-15 -3.9632E-15  1.2592E-13 -6.2688E-14 -2.2059E-15 -3.8985E-14
 -3.8311E-15  6.8906E-15 -6.2688E-14  4.1996E-14  3.3977E-15  6.7486E-14
 -1.0154E-13  1.8267E-13 -2.2059E-15  3.3977E-15  1.7981E-13  1.8495E-12
 -2.0569E-12  3.6996E-12 -3.8985E-14  6.7486E-14  1.8495E-12  3.6251E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.777674   46.829227   -0.132014   -0.013160   -0.980539  2456978.812878
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           27.72010 +/-     0.011
Argument of Peri:      273.00657 +/-     0.028
Long of Asc Node:       83.01061 +/-     0.009
Inclination:             1.28835 +/-     0.000
Eccentricity:         0.30193789 +/-    0.0002
Semi-Major Axis:     47.75799459 +/-    0.0061
Time of Perihelion: 2447688.1086 +/-       3.0
Perihelion:          33.33804634 +/-    0.0095
Aphelion:            62.17794284 +/-    0.0116
Period (y)              330.0482 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.85474588 +/-    0.0004
Ecliptic Y           26.69251418 +/-    0.0004
Ecliptic Z           -0.48177421 +/-    0.0000
Ecliptic XDOT        -0.00185539 +/-    0.0000
Ecliptic YDOT         0.00256598 +/-    0.0000
Ecliptic ZDOT         0.00004844 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.47575650 +/-    0.0004
Geocenter to KBO     35.49599391 +/-    0.0005
# Hcoef:  7.83

The following table shows the complete astrometric record for 15VY165. 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 (15VY165) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.31210  02 58 22.440  +16 07 06.98  23.3r 15VY165   568  C~2lVc      
2014 11  17.42105  02 58 21.847  +16 07 04.60  23.2r 15VY165   568  C~2lVc      
2014 11  17.53510  02 58 21.205  +16 07 02.00  23.3r 15VY165   568  C~2lVc      
2014 11  19.33265  02 58 11.446  +16 06 21.35  23.4r 15VY165   568  C~2lVc      
2014 11  23.43547  02 57 49.376  +16 04 49.95  23.5r 15VY165   568  C~2lVc      
2015 08  11.60566  03 10 44.061  +17 00 52.34  23.6w 15VY165   568  C~2lVc      
2015 09  12.52541  03 10 30.243  +16 59 29.03  23.6w 15VY165   568  C~2lVc      
2015 10  07.46582  03 09 09.414  +16 53 49.70  23.6w 15VY165   568  C~2lVc      
2015 10  08.47003  03 09 05.094  +16 53 32.02  23.5w 15VY165   568  C~2lVc      
2015 10  08.52822  03 09 04.840  +16 53 30.97  23.6w 15VY165   568  C~2lVc      
2015 11  06.28626  03 06 39.717  +16 43 40.58  23.2r 15VY165   568  C~2lVc      
2015 11  06.34963  03 06 39.357  +16 43 39.21  23.2r 15VY165   568  C~2lVc      
2015 11  06.42017  03 06 38.968  +16 43 37.72  23.2r 15VY165   568  C~2lVc      
2015 11  06.48956  03 06 38.578  +16 43 36.13  23.2r 15VY165   568  C~2lVc      
2015 11  07.50772  03 06 32.967  +16 43 13.43  23.4w 15VY165   568  C~2lVc      
2015 11  17.32308  03 05 38.755  +16 39 35.49  23.5w 15VY165   568  C~2lVc      
2015 12  06.40182  03 03 58.659  +16 32 57.22  23.5w 15VY165   568  C~2lVd      
2015 12  13.33636  03 03 26.248  +16 30 49.94  23.5w 15VY165   568  C~2lVd      
2015 12  13.39494  03 03 25.977  +16 30 48.93  23.5w 15VY165   568  C~2lVd      
2016 01  01.38920  03 02 15.121  +16 26 17.96  23.6w 15VY165   568  C~2lVd      
2016 01  02.35555  03 02 12.353  +16 26 07.64  23.6w 15VY165   568  C~2lVd      
2016 01  07.33598  03 01 59.486  +16 25 21.10  23.7w 15VY165   568  C~2lVd      
2016 02  03.22261  03 01 35.615  +16 24 23.03  23.7w 15VY165   568  C~2lVd      
2016 02  03.22917  03 01 35.612  +16 24 23.10  23.7w 15VY165   568  C~2lVd      
2016 02  04.26610  03 01 36.312  +16 24 27.70  23.8w 15VY165   568  C~2lVd      
2016 02  10.25584  03 01 42.700  +16 25 04.03  23.7w 15VY165   568  C~2lVd      
2016 09  06.60560  03 17 44.563  +17 29 58.28  23.7w 15VY165   568  C~2lVd      
2016 09  26.59656  03 16 56.621  +17 26 40.51  23.6w 15VY165   568  C~2lVd      
2016 10  10.40230  03 16 03.031  +17 23 07.35  23.7w 15VY165   568  C~2lVd      
2016 10  10.43169  03 16 02.901  +17 23 06.87  23.6w 15VY165   568  C~2lVd      
2016 10  10.46065  03 16 02.768  +17 23 06.36  23.6w 15VY165   568  C~2lVd      
2016 10  10.49031  03 16 02.638  +17 23 05.89  23.4w 15VY165   568  C~2lVd      
2016 10  27.49100  03 14 39.872  +17 17 41.48  23.6w 15VY165   568  C~2lVd      
2016 11  02.59707  03 14 07.185  +17 15 34.32  23.6w 15VY165   568  C~2lVd      
2016 11  03.51606  03 14 02.205  +17 15 14.91  23.4w 15VY165   568  C~2lVd      
2016 12  29.37514  03 09 29.220  +16 57 55.30  23.7w 15VY165   568  C~2lVd      
2017 01  02.38235  03 09 16.769  +16 57 10.48  23.6w 15VY165   568  C~2lVd      
2017 01  26.25322  03 08 36.173  +16 55 01.58  23.7w 15VY165   568  C~2lVd      
2017 01  26.28489  03 08 36.157  +16 55 01.57  23.7w 15VY165   568  C~2lVd      
2017 09  17.60038  03 24 26.279  +17 57 05.93  23.6w 15VY165   568  C~2lVd      
2017 09  23.55460  03 24 10.743  +17 56 05.11        15VY165   568  C~2lVd      
2017 09  23.57901  03 24 10.668  +17 56 04.74  23.6w 15VY165   568  C~2lVd      
2017 09  23.58734  03 24 10.647  +17 56 04.72  23.6w 15VY165   568  C~2lVd      
2017 09  24.59522  03 24 07.687  +17 55 53.18  23.6w 15VY165   568  C~2lVd      
2017 12  13.37637  03 17 39.630  +17 31 46.18  23.5w 15VY165   568  C~2lVd      
2017 12  13.41395  03 17 39.455  +17 31 45.42  23.7w 15VY165   568  C~2lVd      
2017 12  16.39181  03 17 25.883  +17 30 56.21  23.6w 15VY165   568  C~2lVd      

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    -0.11       0.00    -0.02
  2   0.0003     -8.87     0.09       0.14     0.01
  3   0.0006    -18.48    -0.03       0.27     0.06
  4   0.0055   -164.87     0.04       1.14    -0.02
  5   0.0168   -495.81     0.01       3.74    -0.07
  6   0.7318  11149.18    -0.12     157.73    -0.03
  7   0.8192  10935.26    -0.06     130.69    -0.00
  8   0.8875   9723.89     0.16     116.59    -0.11
  9   0.8902   9659.27    -0.05     116.34    -0.01
 10   0.8904   9655.47    -0.01     116.31    -0.04
 11   0.9691   7485.87     0.03     114.95     0.03
 12   0.9693   7480.51    -0.06     115.05     0.07
 13   0.9695   7474.72     0.04     115.15     0.11
 14   0.9697   7468.89     0.01     115.15     0.07
 15   0.9725   7385.04     0.00     115.36    -0.01
 16   0.9993   6575.28    -0.00     119.30     0.01
 17   1.0516   5081.22     0.06     133.13     0.01
 18   1.0706   4597.86     0.02     139.93    -0.04
 19   1.0707   4593.84    -0.03     140.04    -0.01
 20   1.1227   3539.07    -0.08     163.12     0.14
 21   1.1254   3497.94    -0.05     164.31     0.02
 22   1.1390   3307.13    -0.09     171.25     0.06
 23   1.2126   2961.03     0.07     211.42    -0.07
 24   1.2126   2961.00    -0.01     211.50    -0.00
 25   1.2155   2971.96     0.14     213.10    -0.01
 26   1.2319   3070.39    -0.01     222.30     0.00
 27   1.8050  17450.59     0.03     250.98    -0.00
 28   1.8598  16731.90    -0.03     238.47    -0.02
 29   1.8976  15930.86     0.04     233.10    -0.04
 30   1.8977  15928.92     0.06     233.12    -0.02
 31   1.8977  15926.94     0.02     233.13    -0.03
 32   1.8978  15925.01     0.07     233.16     0.00
 33   1.9444  14689.57     0.00     231.49    -0.01
 34   1.9611  14202.05    -0.11     232.40     0.04
 35   1.9636  14127.77     0.06     232.54    -0.02
 36   2.1165  10064.68     0.02     276.44    -0.00
 37   2.1275   9880.14     0.02     281.55    -0.05
 38   2.1929   9283.18    -0.06     315.15    -0.05
 39   2.1929   9282.95    -0.06     315.21    -0.05
 40   2.8345  23474.71     0.01     359.28     0.02
 41   2.8508  23241.89    -0.02     356.09     0.04
 42   2.8508  23240.74    -0.07     356.00    -0.05
 43   2.8509  23240.44     0.00     356.05     0.01
 44   2.8536  23196.10     0.03     355.50    -0.05
 45   3.0720  17410.20     0.00     373.94     0.14
 46   3.0721  17407.57     0.02     373.86     0.01
 47   3.0803  17205.91    -0.02     376.80    -0.04

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.

15VY165    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.319    48.339    48.299
ecceobj         0.311     0.311     0.310
incobj          1.288     1.288     1.288
qmin           32.561    32.549    32.569
qmax           63.655    63.617    63.691
amean          47.797    47.798    47.798
amin           47.335    47.331    47.313
amax           48.380    48.391    48.381
emean           0.303     0.303     0.303
emin            0.290     0.291     0.291
emax            0.317     0.317     0.317
imean           1.343     1.329     1.315
imin            0.673     0.673     0.673
imax            1.890     1.842     1.793
excite_mean     0.304     0.304     0.304
fracstop        1.000     1.000     1.000
cjmean          3.030     3.030     3.030

libcent 0        71.4      71.4      71.5
libamp  0         7.5       8.4       9.4
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       198.9     198.0     196.8
kozaiamp        179.9     179.9     179.9