Orbit Fit and Astrometric record for 15VV164

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: 15VV164   
# Created Mon Dec  6 02:13:35 2021
# Orbit generated from Bernstein formalism
# Fitting     27 observations of     27
# Arc:   2.32y
# First observation: 2015/08/20
#  Last observation: 2017/12/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000146   0.030557  -0.000002   0.000941   0.027945   0.000000
# Chi-squared of fit:     5.58 DOF:     48 RMS:  0.08
# Min/Max residuals:    -0.24    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.766949E-05  2.994476E-02  7.968171E-08  9.188412E-04  2.760784E-02 -2.864215E-04
# Covariance matrix:
  1.9383E-13 -1.0003E-13  4.7311E-16 -2.3971E-15  9.3239E-14 -1.1514E-12
 -1.0003E-13  1.0997E-12 -1.5389E-14  5.8829E-14  4.7395E-13  2.9557E-11
  4.7311E-16 -1.5389E-14  1.0865E-13 -8.4990E-14 -7.2293E-15 -4.6888E-13
 -2.3971E-15  5.8829E-14 -8.4990E-14  1.2967E-13  2.6938E-14  1.7970E-12
  9.3239E-14  4.7395E-13 -7.2293E-15  2.6938E-14  3.5054E-13  1.3597E-11
 -1.1514E-12  2.9557E-11 -4.6888E-13  1.7970E-12  1.3597E-11  9.0246E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.106175   53.738186    1.012793    0.000245   -0.060434  2457255.068249
# Heliocentric elements and errors
Epoch:              2457250.5000  =  2015/08/16
Mean Anomaly:          336.37130 +/-     0.513
Argument of Peri:       31.66002 +/-     0.629
Long of Asc Node:       48.70690 +/-     0.002
Inclination:             1.76750 +/-     0.001
Eccentricity:         0.09022381 +/-    0.0004
Semi-Major Axis:     39.50040819 +/-    0.0027
Time of Perihelion: 2463202.1600 +/-     129.1
Perihelion:          35.93653089 +/-    0.0177
Aphelion:            43.06428549 +/-    0.0178
Period (y)              248.2622 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.27249396 +/-    0.0005
Ecliptic Y           28.65579272 +/-    0.0006
Ecliptic Z            0.06714737 +/-    0.0000
Ecliptic XDOT        -0.00241335 +/-    0.0000
Ecliptic YDOT         0.00172704 +/-    0.0000
Ecliptic ZDOT         0.00009112 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.29356627 +/-    0.0006
Geocenter to KBO     36.22159792 +/-    0.0008
# Hcoef:  8.61

The following table shows the complete astrometric record for 15VV164. 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 (15VV164) followed by the observatory code and reference code for the source of the astrometry.

2015 08  20.56746  03 25 18.965  +18 48 37.19  24.6w 15VV164   568  C~2lVY      
2015 09  07.61267  03 25 13.252  +18 48 29.37  24.3w 15VV164   568  C~2lVY      
2015 09  12.46374  03 25 05.647  +18 48 05.12  24.5w 15VV164   568  C~2lVY      
2015 10  07.51519  03 23 49.310  +18 43 43.13  23.3w 15VV164   568  C~2lVY      
2015 10  07.57457  03 23 49.031  +18 43 42.31  24.3w 15VV164   568  C~2lVY      
2015 10  09.55447  03 23 40.655  +18 43 12.81  24.3w 15VV164   568  C~2lVY      
2015 11  06.32832  03 21 18.916  +18 34 45.08  24.2r 15VV164   568  C~2lVY      
2015 11  06.39169  03 21 18.552  +18 34 43.74  24.3r 15VV164   568  C~2lVY      
2015 11  06.46246  03 21 18.154  +18 34 42.27  24.1r 15VV164   568  C~2lVY      
2015 11  07.48432  03 21 12.357  +18 34 21.25  24.2w 15VV164   568  C~2lVY      
2015 11  17.46555  03 20 15.225  +18 30 52.85  24.2w 15VV164   568  C~2lVY      
2015 12  06.33173  03 18 30.470  +18 24 26.75  24.5w 15VV164   568  C~2lVY      
2015 12  06.46917  03 18 29.746  +18 24 23.89  24.3w 15VV164   568  C~2lVY      
2015 12  31.35296  03 16 39.013  +18 17 31.97  24.2w 15VV164   568  C~2lVY      
2016 01  07.38230  03 16 16.875  +18 16 09.46  24.8w 15VV164   568  C~2lVY      
2016 02  04.34615  03 15 40.742  +18 13 59.45  24.9w 15VV164   568  C~2lVY      
2016 02  11.23523  03 15 45.574  +18 14 20.16  24.7w 15VV164   568  C~2lVY      
2016 09  07.61990  03 32 14.825  +19 16 50.33  24.7w 15VV164   568  C~2lVY      
2016 09  27.54346  03 31 29.922  +19 14 29.16  24.6w 15VV164   568  C~2lVY      
2016 10  09.53944  03 30 44.676  +19 11 59.43  24.5w 15VV164   568  C~2lVY      
2016 10  09.61149  03 30 44.367  +19 11 58.34  24.5w 15VV164   568  C~2lVY      
2016 10  31.51783  03 28 55.736  +19 05 48.71  24.5w 15VV164   568  C~2lVY      
2016 11  02.46775  03 28 44.921  +19 05 11.62  24.5w 15VV164   568  C~2lVY      
2016 11  04.44390  03 28 33.863  +19 04 33.47  24.4w 15VV164   568  C~2lVY      
2016 12  29.39711  03 23 46.587  +18 47 37.84        15VV164   568  C~2lVY      
2017 12  13.36234  03 32 07.494  +19 20 46.58  24.2w 15VV164   568  C~2lVY      
2017 12  13.40466  03 32 07.275  +19 20 45.93  24.6w 15VV164   568  C~2lVY      

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     0.09
     2   0.0494    -80.52     0.12      12.59    -0.02
     3   0.0627   -191.14    -0.01      15.97     0.02
     4   0.1313  -1306.42     0.26      33.02    -0.08
     5   0.1314  -1310.46    -0.09      33.22     0.06
     6   0.1369  -1433.06    -0.06      34.49     0.03
     7   0.2129  -3510.75    -0.01      51.60     0.10
     8   0.2131  -3516.10    -0.03      51.61     0.05
     9   0.2133  -3521.94     0.10      51.63    -0.01
    10   0.2161  -3607.03     0.00      52.24     0.01
    11   0.2434  -4446.12     0.00      57.70    -0.01
    12   0.2950  -5986.75    -0.09      66.92    -0.04
    13   0.2954  -5997.45    -0.00      66.82    -0.24
    14   0.3635  -7628.67    -0.10      77.23     0.00
    15   0.3828  -7955.05     0.04      79.69    -0.06
    16   0.4594  -8486.71     0.00      88.58     0.00
    17   0.4782  -8414.73     0.04      90.57     0.02
    18   1.0515   6133.06     0.01     204.63     0.11
    19   1.1060   5481.40    -0.05     219.85     0.01
    20   1.1389   4822.93    -0.07     228.67     0.04
    21   1.1391   4818.41    -0.01     228.67    -0.02
    22   1.1990   3234.80     0.15     243.07    -0.16
    23   1.2044   3077.04    -0.09     244.46     0.05
    24   1.2098   2915.68    -0.04     245.70     0.12
    25   1.3602  -1285.04     0.02     269.94    -0.10
    26   2.3157   6088.74    -0.00     458.95    -0.04
    27   2.3158   6085.57     0.04     459.06     0.05

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.

15VV164    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.868    39.881    39.855
ecceobj         0.095     0.095     0.096
incobj          1.762     1.762     1.761
qmin           35.477    35.570    35.362
qmax           43.908    43.858    43.878
amean          39.463    39.463    39.463
amin           39.059    39.042    39.058
amax           39.897    39.904    39.896
emean           0.079     0.077     0.080
emin            0.057     0.054     0.060
emax            0.102     0.101     0.101
imean           1.711     1.947     1.604
imin            0.727     0.852     0.594
imax            2.451     2.757     2.297
excite_mean     0.085     0.085     0.085
fracstop        1.000     1.000     1.000
cjmean          3.043     3.043     3.043

libcent 0       180.8     181.0     180.2
libamp  0        85.3      91.4      80.5
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       178.4     180.8     176.6
kozaiamp        180.0     180.0     180.0