Orbit Fit and Astrometric record for 15VV172

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: 15VV172   
# Created Sat Nov 27 02:13:50 2021
# Orbit generated from Bernstein formalism
# Fitting     40 observations of     40
# Arc:   2.85y
# First observation: 2014/11/17
#  Last observation: 2017/09/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000133   0.020922   0.000027  -0.007605   0.023687   0.000000
# Chi-squared of fit:     4.51 DOF:     74 RMS:  0.06
# Min/Max residuals:    -0.19    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.419054E-05  2.080885E-02 -5.009421E-06 -7.585336E-03  2.367167E-02 -3.738466E-03
# Covariance matrix:
  2.7959E-13 -2.9927E-13 -3.2956E-14  6.8478E-14 -1.4065E-13 -3.3225E-12
 -2.9927E-13  4.3425E-13  5.8486E-14 -1.2141E-13  2.2899E-13  5.8945E-12
 -3.2956E-14  5.8486E-14  1.7258E-13 -1.1446E-13  3.7130E-14  9.4980E-13
  6.8478E-14 -1.2141E-13 -1.1446E-13  1.1187E-13 -7.7648E-14 -1.9718E-12
 -1.4065E-13  2.2899E-13  3.7130E-14 -7.7648E-14  2.4433E-13  3.7504E-12
 -3.3225E-12  5.8945E-12  9.4980E-13 -1.9718E-12  3.7504E-12  9.5729E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.742756   47.901902   -0.115267   -0.012581   -0.982640  2456978.906378
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:          274.90603 +/-     0.060
Argument of Peri:      286.23893 +/-     0.037
Long of Asc Node:      226.06634 +/-     0.000
Inclination:            20.02772 +/-     0.001
Eccentricity:         0.16697865 +/-    0.0004
Semi-Major Axis:     42.65513556 +/-    0.0069
Time of Perihelion: 2481022.5267 +/-      15.9
Perihelion:          35.53263873 +/-    0.0186
Aphelion:            49.77763239 +/-    0.0195
Period (y)              278.5898 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.88866919 +/-    0.0006
Ecliptic Y           32.15071199 +/-    0.0007
Ecliptic Z           -0.54786109 +/-    0.0000
Ecliptic XDOT        -0.00208754 +/-    0.0000
Ecliptic YDOT         0.00127927 +/-    0.0000
Ecliptic ZDOT        -0.00087153 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.22642295 +/-    0.0006
Geocenter to KBO     42.24459797 +/-    0.0009
# Hcoef:  7.40

The following table shows the complete astrometric record for 15VV172. 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 (15VV172) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.40560  03 02 37.390  +16 27 11.42  23.6r 15VV172   568  C~2nwE      
2014 11  17.51968  03 02 36.834  +16 27 08.61  23.8r 15VV172   568  C~2nwE      
2014 11  19.31306  03 02 28.351  +16 26 25.54  23.7r 15VV172   568  C~2nwE      
2014 11  23.41643  03 02 09.073  +16 24 47.81  23.9r 15VV172   568  C~2nwE      
2015 08  11.59273  03 12 25.668  +16 48 40.28  23.9w 15VV172   568  C~2nwE      
2015 09  06.62350  03 12 20.710  +16 45 47.36        15VV172   568  C~2nwE      
2015 09  12.51312  03 12 11.153  +16 44 34.83  23.8w 15VV172   568  C~2nwE      
2015 10  07.43992  03 11 00.259  +16 37 32.02  23.9w 15VV172   568  C~2nwE      
2015 10  07.44703  03 11 00.222  +16 37 31.89  23.8w 15VV172   568  C~2nwE      
2015 10  08.45165  03 10 56.467  +16 37 11.41  23.9w 15VV172   568  C~2nwE      
2015 10  08.51072  03 10 56.240  +16 37 10.26  23.7w 15VV172   568  C~2nwE      
2015 11  07.35903  03 08 44.688  +16 25 51.63  23.7r 15VV172   568  C~2nwE      
2015 11  07.40112  03 08 44.478  +16 25 50.63  23.5r 15VV172   568  C~2nwE      
2015 11  07.44330  03 08 44.272  +16 25 49.60  23.4r 15VV172   568  C~2nwE      
2015 11  10.52886  03 08 29.404  +16 24 35.51  23.8w 15VV172   568  C~2nwE      
2015 11  17.37547  03 07 56.411  +16 21 51.60  24.3w 15VV172   568  C~2nwE      
2015 11  17.42215  03 07 56.186  +16 21 50.53  23.6w 15VV172   568  C~2nwE      
2015 12  06.38432  03 06 28.926  +16 14 39.62  23.7w 15VV172   568  C~2nwE      
2015 12  13.31874  03 06 00.247  +16 12 17.19  23.9w 15VV172   568  C~2nwE      
2015 12  13.37723  03 06 00.013  +16 12 16.12  23.9w 15VV172   568  C~2nwE      
2016 01  01.37186  03 04 56.361  +16 06 53.22  24.1w 15VV172   568  C~2nwE      
2016 01  07.31862  03 04 41.915  +16 05 36.31  24.0w 15VV172   568  C~2nwE      
2016 02  04.29505  03 04 16.612  +16 02 37.83  23.9w 15VV172   568  C~2nwE      
2016 02  04.30157  03 04 16.619  +16 02 37.78  23.8w 15VV172   568  C~2nwE      
2016 09  06.60560  03 17 36.038  +16 39 23.84  24.1w 15VV172   568  C~2nwE      
2016 09  26.58845  03 16 52.675  +16 34 29.72  23.9w 15VV172   568  C~2nwE      
2016 10  10.39070  03 16 05.282  +16 30 03.47  24.1w 15VV172   568  C~2nwE      
2016 10  10.42589  03 16 05.145  +16 30 02.74  23.7w 15VV172   568  C~2nwE      
2016 10  10.44903  03 16 05.045  +16 30 02.25  23.9w 15VV172   568  C~2nwF      
2016 10  10.48430  03 16 04.913  +16 30 01.54  24.2w 15VV172   568  C~2nwF      
2016 10  10.50790  03 16 04.816  +16 30 01.03  24.2w 15VV172   568  C~2nwF      
2016 11  02.60285  03 14 23.512  +16 21 21.78  23.9w 15VV172   568  C~2nwF      
2016 11  03.52184  03 14 19.151  +16 21 00.18  24.1w 15VV172   568  C~2nwF      
2016 12  29.36878  03 10 18.576  +16 01 40.12  23.8w 15VV172   568  C~2nwF      
2017 01  01.26608  03 10 10.337  +16 00 59.82  23.9w 15VV172   568  C~2nwF      
2017 01  02.37586  03 10 07.340  +16 00 44.88  24.2w 15VV172   568  C~2nwF      
2017 01  26.26424  03 09 28.998  +15 57 18.85  24.2w 15VV172   568  C~2nwF      
2017 01  26.27054  03 09 28.998  +15 57 18.79  24.1w 15VV172   568  C~2nwF      
2017 09  16.60944  03 22 37.924  +16 30 26.71  24.1w 15VV172   568  C~2nwF      
2017 09  23.54857  03 22 21.618  +16 28 37.82        15VV172   568  C~2nwF      

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    -0.06       0.00    -0.01
     2   0.0003     -8.46    -0.13      -0.48    -0.04
     3   0.0052   -137.67     0.06      -7.90    -0.03
     4   0.0165   -431.28     0.10     -24.54    -0.06
     5   0.7315   8491.36    -0.02   -1061.78    -0.01
     6   0.8028   8376.50    -0.10   -1209.61     0.17
     7   0.8189   8224.63    -0.02   -1242.94    -0.04
     8   0.8872   7128.51     0.17   -1378.04    -0.00
     9   0.8872   7127.96     0.04   -1378.02     0.05
    10   0.8899   7070.40     0.00   -1383.28    -0.00
    11   0.8901   7066.95     0.02   -1383.51     0.05
    12   0.9718   5060.50     0.04   -1527.15    -0.01
    13   0.9719   5057.32    -0.02   -1527.30     0.02
    14   0.9720   5054.19    -0.02   -1527.48    -0.00
    15   0.9805   4828.06    -0.01   -1540.83     0.05
    16   0.9992   4326.34    -0.00   -1569.68    -0.02
    17   0.9994   4322.93     0.05   -1569.83     0.00
    18   1.0513   2996.32     0.04   -1641.84     0.13
    19   1.0703   2559.97    -0.03   -1665.72    -0.03
    20   1.0704   2556.43     0.03   -1665.83     0.05
    21   1.1224   1585.82     0.00   -1724.35    -0.07
    22   1.1387   1364.48    -0.03   -1740.93    -0.06
    23   1.2153    964.66    -0.06   -1811.87     0.04
    24   1.2153    964.74    -0.01   -1811.95    -0.02
    25   1.8048  12657.79    -0.02   -2775.46     0.01
    26   1.8595  11976.96    -0.09   -2896.97    -0.01
    27   1.8973  11247.22     0.06   -2975.58    -0.05
    28   1.8974  11245.12     0.07   -2975.77    -0.06
    29   1.8974  11243.60    -0.05   -2975.87    -0.04
    30   1.8975  11241.57     0.06   -2976.05    -0.05
    31   1.8976  11240.09     0.00   -2976.18    -0.05
    32   1.9608   9693.20    -0.19   -3093.33    -0.05
    33   1.9634   9626.81     0.01   -3097.56    -0.04
    34   2.1163   5971.74    -0.01   -3290.78     0.01
    35   2.1242   5846.37     0.11   -3297.61     0.15
    36   2.1272   5800.69     0.03   -3300.35    -0.03
    37   2.1926   5212.24    -0.05   -3349.57     0.04
    38   2.1926   5212.22    -0.01   -3349.63    -0.01
    39   2.8315  16736.07    -0.03   -4417.73     0.02
    40   2.8505  16479.89     0.04   -4463.33     0.01

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.

15VV172    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.894    42.911    42.877
ecceobj         0.162     0.163     0.161
incobj         19.956    19.956    19.956
qmin           35.026    34.976    35.115
qmax           50.516    50.543    50.579
amean          42.609    42.623    42.592
amin           42.246    42.251    42.208
amax           43.022    43.025    43.007
emean           0.156     0.157     0.154
emin            0.137     0.139     0.133
emax            0.176     0.176     0.176
imean          21.371    21.368    21.372
imin           20.692    20.713    20.688
imax           22.023    22.017    22.033
excite_mean     0.396     0.397     0.396
fracstop        1.000     1.000     1.000
cjmean          2.894     2.894     2.895

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       176.2     176.5     176.0
kozaiamp        180.0     180.0     180.0