Orbit Fit and Astrometric record for 15VV165

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: 15VV165   
# Created Sat Dec  4 02:13:38 2021
# Orbit generated from Bernstein formalism
# Fitting     35 observations of     36
# Arc:   2.35y
# First observation: 2015/08/11
#  Last observation: 2017/12/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000193   0.041061   0.000014  -0.012375   0.035525   0.000000
# Chi-squared of fit:     2.35 DOF:     64 RMS:  0.05
# Min/Max residuals:    -0.11    0.10
# Exact a, adot, b, bdot, g, gdot:
  1.813127E-05  3.983476E-02 -5.021036E-06 -1.200768E-02  3.475212E-02 -1.654715E-03
# Covariance matrix:
  1.8807E-13  4.9289E-15  9.5014E-15 -2.8180E-14  1.3246E-13  1.0525E-12
  4.9289E-15  3.6504E-13  3.9459E-14 -1.3251E-13  2.2665E-13  4.8378E-12
  9.5014E-15  3.9459E-14  1.0231E-13 -8.0895E-14  3.0704E-14  6.4594E-13
 -2.8180E-14 -1.3251E-13 -8.0895E-14  1.2919E-13 -9.9141E-14 -2.1724E-12
  1.3246E-13  2.2665E-13  3.0704E-14 -9.9141E-14  2.5929E-13  3.6447E-12
  1.0525E-12  4.8378E-12  6.4594E-13 -2.1724E-12  3.6447E-12  7.9290E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.801999   49.818904    1.015638    0.000438    0.022363  2457246.106449
# Heliocentric elements and errors
Epoch:              2457240.5000  =  2015/08/06
Mean Anomaly:          305.03051 +/-     0.050
Argument of Peri:      246.42687 +/-     0.071
Long of Asc Node:      225.15395 +/-     0.000
Inclination:            16.86903 +/-     0.000
Eccentricity:         0.08752820 +/-    0.0002
Semi-Major Axis:     30.11600207 +/-    0.0017
Time of Perihelion: 2466458.0097 +/-       8.3
Perihelion:          27.48000247 +/-    0.0061
Aphelion:            32.75200167 +/-    0.0062
Period (y)              165.2739 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           19.32172327 +/-    0.0003
Ecliptic Y           21.30986577 +/-    0.0003
Ecliptic Z           -0.40288346 +/-    0.0000
Ecliptic XDOT        -0.00249237 +/-    0.0000
Ecliptic YDOT         0.00190878 +/-    0.0000
Ecliptic ZDOT        -0.00094402 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   28.76806709 +/-    0.0003
Geocenter to KBO     28.77522565 +/-    0.0004
# Hcoef:  8.76

The following table shows the complete astrometric record for 15VV165. 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 (15VV165) followed by the observatory code and reference code for the source of the astrometry.

2015 08  11.60566  03 10 23.442  +16 55 11.42  23.6w 15VV165   568  C~2lVc      
2015 09  06.63576  03 10 23.448  +16 51 20.23  23.4w 15VV165   568  C~2lVc      
2015 09  12.52541  03 10 10.777  +16 49 37.07  23.5w 15VV165   568  C~2lVc      
2015 10  07.47166  03 08 31.127  +16 39 18.76  23.5w 15VV165   568  C~2lVc      
2015 10  08.47583  03 08 25.763  +16 38 48.61  23.6w 15VV165   568  C~2lVc      
2015 10  08.53403  03 08 25.444  +16 38 46.93  23.3w 15VV165   568  C~2lVc      
2015 11  06.29151  03 05 23.768  +16 22 35.77  23.3r 15VV165   568  C~2lVc      
2015 11  06.35485  03 05 23.326  +16 22 33.50  23.4r 15VV165   568  C~2lVc      
2015 11  06.42547  03 05 22.844  +16 22 30.89  23.3r 15VV165   568  C~2lVc      
2015 11  06.49480  03 05 22.350  +16 22 28.46  23.4r 15VV165   568  C~2lVc      
2015 11  07.51356  03 05 15.312  +16 21 51.89  23.4w 15VV165   568  C~2lVc      
2015 11  17.27960  03 04 07.723  +16 16 02.11  23.5w 15VV165   568  C~2lVc      
2015 11  17.32888  03 04 07.377  +16 16 00.38  23.4w 15VV165   568  C~2lVc      
2015 12  06.40765  03 02 02.431  +16 05 14.20  23.5w 15VV165   568  C~2lVc      
2015 12  13.34220  03 01 22.272  +16 01 43.86  23.7w 15VV165   568  C~2lVc      
2016 01  01.39556  02 59 55.310  +15 53 51.49  23.7w 15VV165   568  C~2lVc      
2016 02  04.27190  02 59 13.743  +15 48 12.49  23.6w 15VV165   568  C~2lVc      
2016 02  10.26162  02 59 23.330  +15 48 26.20  23.8w 15VV165   568  C~2lVc      
2016 09  06.60560  03 20 29.780  +16 47 06.12        15VV165   568  C~2lVc      
2016 09  26.59656  03 19 33.228  +16 40 07.48        15VV165   568  C~2lVc      
2016 10  10.40230  03 18 27.281  +16 33 42.11  23.6w 15VV165   568  C~2lVc      
2016 10  10.46065  03 18 26.958  +16 33 40.32  23.6w 15VV165   568  C~2lVc      
2016 10  27.49679  03 16 43.396  +16 24 29.47  23.6w 15VV165   568  C~2lVc      
2016 11  02.60285  03 16 02.309  +16 20 59.87  23.5w 15VV165   568  C~2lVc      
2016 11  03.52184  03 15 56.030  +16 20 28.16  23.5w 15VV165   568  C~2lVc      
2016 12  29.36878  03 10 12.200  +15 52 14.25  23.7w 15VV165   568  C~2lVc      
2017 01  01.26608  03 10 00.828  +15 51 16.80  23.7w 15VV165   568  C~2lVc      
2017 01  02.37586  03 09 56.725  +15 50 55.93  23.6w 15VV165   568  C~2lVc      
2017 01  26.26424  03 09 07.891  +15 46 16.30  23.8w 15VV165   568  C~2lVc      
2017 01  26.27054  03 09 07.891  +15 46 16.29  23.7w 15VV165   568  C~2lVc      
2017 09  15.58250  03 30 23.621  +16 38 32.93  23.5w 15VV165   568  C~2lVc      
2017 09  16.63393  03 30 21.036  +16 38 11.47  23.6w 15VV165   568  C~2lVc      
2017 09  17.59434  03 30 18.559  +16 37 51.42  23.6w 15VV165   568  C~2lVc      
2017 09  23.57295  03 30 00.465  +16 35 37.88  23.3w 15VV165   568  C~2lVc      
2017 12  16.35926  03 21 32.058  +15 53 01.42  23.5w 15VV165   568  C~2lVc      
2017 12  16.37785  03 21 31.955  +15 53 00.90  23.6w 15VV165   568  C~2lVc      

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    -0.09
     2   0.0713    -61.94     0.02    -222.74     0.04
     3   0.0874   -264.86     0.09    -273.29     0.02
     4   0.1557  -1809.99    -0.00    -482.93    -0.04
     5   0.1584  -1892.36    -0.03    -491.10    -0.02
     6   0.1586  -1897.23     0.02    -491.48     0.05
     7   0.2373  -4676.51    -0.10    -714.11     0.10
     8   0.2375  -4683.25    -0.09    -714.55     0.07
     9   0.2377  -4690.64     0.08    -715.15    -0.07
    10   0.2379  -4698.15     0.00    -715.54     0.02
    11   0.2407  -4805.65     0.03    -722.92    -0.01
    12   0.2674  -5838.03     0.02    -791.60    -0.06
    13   0.2676  -5843.30    -0.00    -791.89    -0.05
    14   0.3198  -7753.95    -0.11    -914.39     0.01
    15   0.3388  -8369.47     0.03    -955.21     0.05
    16   0.3909  -9708.27     0.04   -1058.00     0.01
    17   0.4837 -10380.79     0.01   -1215.04    -0.09
    18   0.5001 -10243.82    -0.00   -1240.82    -0.02
    19   1.0732   8277.88    -0.02   -2751.29     0.05
    20   1.1280   7383.97 (   0.55)  -2947.48 (  -0.13)
    21   1.1658   6367.55    -0.00   -3075.31     0.05
    22   1.1659   6362.60     0.01   -3075.83     0.00
    23   1.2126   4779.78     0.00   -3220.94    -0.01
    24   1.2293   4153.91    -0.11   -3268.84    -0.04
    25   1.2318   4058.34    -0.02   -3275.80     0.01
    26   1.3847  -1169.66     0.06   -3595.59    -0.07
    27   1.3926  -1343.18     0.02   -3606.87     0.04
    28   1.3957  -1405.82     0.05   -3611.07     0.04
    29   1.4611  -2160.07    -0.03   -3690.68    -0.00
    30   1.4611  -2160.07     0.02   -3690.69     0.01
    31   2.0971  16443.69     0.03   -5391.09     0.01
    32   2.1000  16402.17     0.03   -5402.84     0.02
    33   2.1026  16362.50     0.00   -5413.60    -0.01
    34   2.1190  16075.89    -0.02   -5479.54    -0.03
    35   2.3484   8317.24    -0.05   -6121.71     0.02
    36   2.3485   8315.66     0.02   -6121.83    -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.

15VV165    quality flag:3

Type:            1:1       1:1       1:1

axisobj        30.337    30.341    30.333
ecceobj         0.087     0.087     0.087
incobj         16.812    16.812    16.812
qmin           27.104    27.147    27.056
qmax           33.331    33.285    33.298
amean          30.110    30.110    30.110
amin           29.777    29.767    29.794
amax           30.485    30.468    30.474
emean           0.074     0.074     0.075
emin            0.051     0.051     0.053
emax            0.096     0.095     0.095
imean          17.817    17.820    17.801
imin           17.517    17.516    17.517
imax           18.082    18.078    18.059
excite_mean     0.315     0.315     0.315
fracstop        1.000     1.000     1.000
cjmean          2.896     2.896     2.896

libcent 0        64.5      64.3      64.8
libamp  0        27.3      26.3      26.7
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       179.4     178.7     178.8
kozaiamp        180.0     180.0     180.0