Orbit Fit and Astrometric record for 15VE173

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: 15VE173   
# Created Tue Apr  1 01:10:43 2025
# Orbit generated from Bernstein formalism
# Fitting     40 observations of     40
# Arc:   3.08y
# First observation: 2014/11/17
#  Last observation: 2017/12/16
Preliminary a, adot, b, bdot, g, gdot:
   0.000062   0.020726   0.000002   0.000540   0.022366   0.000000
# Chi-squared of fit:    12.25 DOF:     74 RMS:  0.10
# Min/Max residuals:    -0.23    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.441275E-05  2.093260E-02  1.098711E-06  5.449854E-04  2.260510E-02  1.775247E-03
# Covariance matrix:
  3.8122E-13 -4.0646E-13  5.2939E-15 -8.3670E-15 -2.0754E-13 -4.6164E-12
 -4.0646E-13  5.5053E-13 -8.0595E-15  1.2936E-14  2.8158E-13  7.1280E-12
  5.2939E-15 -8.0595E-15  1.6329E-13 -8.1524E-14 -4.6883E-15 -1.1515E-13
 -8.3670E-15  1.2936E-14 -8.1524E-14  5.2857E-14  6.9911E-15  1.8567E-13
 -2.0754E-13  2.8158E-13 -4.6883E-15  6.9911E-15  2.5634E-13  3.8775E-12
 -4.6164E-12  7.1280E-12 -1.1515E-13  1.8567E-13  3.8775E-12  1.0226E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.957894   48.953662   -0.095037   -0.016319   -0.984765  2456978.782278
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           92.22988 +/-     0.093
Argument of Peri:      225.98779 +/-     0.082
Long of Asc Node:       81.20415 +/-     0.010
Inclination:             1.76162 +/-     0.001
Eccentricity:         0.08473775 +/-    0.0005
Semi-Major Axis:     44.75462652 +/-    0.0043
Time of Perihelion: 2428953.3170 +/-      28.1
Perihelion:          40.96222010 +/-    0.0209
Aphelion:            48.54703295 +/-    0.0211
Period (y)              299.4092 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.61748570 +/-    0.0006
Ecliptic Y           34.16525076 +/-    0.0008
Ecliptic Z           -0.73951610 +/-    0.0000
Ecliptic XDOT        -0.00177443 +/-    0.0000
Ecliptic YDOT         0.00182284 +/-    0.0000
Ecliptic ZDOT         0.00006251 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.22175033 +/-    0.0007
Geocenter to KBO     44.23780425 +/-    0.0010
# Hcoef:  8.27

The following table shows the complete astrometric record for 15VE173. 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 (15VE173) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.28150  03 07 05.271  +16 32 09.02  24.6r 15VE173   568  C~2nwG      
2014 11  17.39021  03 07 04.756  +16 32 07.09  24.5r 15VE173   568  C~2nwG      
2014 11  17.50402  03 07 04.223  +16 32 05.12  24.5r 15VE173   568  C~2nwG      
2015 08  11.59273  03 16 09.002  +17 10 53.29  24.8w 15VE173   568  C~2nwG      
2015 09  06.62350  03 16 05.168  +17 10 14.23  25.1w 15VE173   568  C~2nwG      
2015 09  12.51312  03 15 56.177  +17 09 34.23  25.3w 15VE173   568  C~2nwG      
2015 10  07.43992  03 14 48.956  +17 04 56.12  24.7w 15VE173   568  C~2nwG      
2015 10  07.44703  03 14 48.911  +17 04 56.13  25.1w 15VE173   568  C~2nwG      
2015 10  08.45165  03 14 45.320  +17 04 41.77  24.8w 15VE173   568  C~2nwG      
2015 10  08.51072  03 14 45.116  +17 04 40.84  24.9w 15VE173   568  C~2nwG      
2015 11  07.35903  03 12 39.111  +16 56 22.05  25.5r 15VE173   568  C~2nwG      
2015 11  07.40112  03 12 38.920  +16 56 21.31  24.9r 15VE173   568  C~2nwG      
2015 11  07.44330  03 12 38.714  +16 56 20.61  24.9r 15VE173   568  C~2nwG      
2015 11  10.52886  03 12 24.389  +16 55 24.69  25.0w 15VE173   568  C~2nwG      
2015 11  17.37547  03 11 52.586  +16 53 21.33  24.7w 15VE173   568  C~2nwG      
2015 11  17.42215  03 11 52.356  +16 53 20.49  24.6w 15VE173   568  C~2nwG      
2015 12  06.36096  03 10 27.901  +16 47 56.61  25.4w 15VE173   568  C~2nwG      
2016 01  07.42868  03 08 42.076  +16 41 29.40  25.9w 15VE173   568  C~2nwG      
2016 01  08.25624  03 08 40.299  +16 41 23.71  25.3w 15VE173   568  C~2nwG      
2016 02  10.30807  03 08 17.797  +16 40 44.25  24.7w 15VE173   568  C~2nwG      
2016 09  06.60560  03 20 47.266  +17 30 08.68        15VE173   568  C~2nwG      
2016 09  26.59656  03 20 06.217  +17 27 18.94  25.0w 15VE173   568  C~2nwG      
2016 10  10.40230  03 19 21.085  +17 24 20.82  26.0w 15VE173   568  C~2nwG      
2016 10  10.46065  03 19 20.871  +17 24 20.07  25.1w 15VE173   568  C~2nwG      
2016 10  27.49100  03 18 11.345  +17 19 51.17  24.8w 15VE173   568  C~2nwG      
2016 11  02.52573  03 17 44.249  +17 18 07.52  25.0w 15VE173   568  C~2nwG      
2016 11  02.59707  03 17 43.916  +17 18 06.28  24.9w 15VE173   568  C~2nwG      
2016 11  03.51606  03 17 39.725  +17 17 50.29  25.0w 15VE173   568  C~2nwG      
2016 11  04.40084  03 17 35.685  +17 17 34.87  24.8w 15VE173   568  C~2nwG      
2016 12  24.29598  03 14 02.586  +17 04 22.76  25.1w 15VE173   568  C~2nwG      
2016 12  24.31334  03 14 02.540  +17 04 22.55  24.9w 15VE173   568  C~2nwG      
2017 01  02.39822  03 13 35.671  +17 02 48.53  25.6w 15VE173   568  C~2nwG      
2017 01  02.41556  03 13 35.636  +17 02 48.48  24.9w 15VE173   568  C~2nwG      
2017 01  26.32908  03 12 56.401  +17 00 48.88  24.9w 15VE173   568  C~2nwG      
2017 09  17.60038  03 25 12.795  +17 48 25.71  24.9w 15VE173   568  C~2nwG      
2017 09  23.57901  03 24 59.214  +17 47 32.06        15VE173   568  C~2nwG      
2017 09  24.59522  03 24 56.626  +17 47 21.65  24.0w 15VE173   568  C~2nwG      
2017 12  16.34929  03 19 16.230  +17 26 21.85  25.3w 15VE173   568  C~2nwG      
2017 12  16.36856  03 19 16.163  +17 26 21.48  24.8w 15VE173   568  C~2nwG      
2017 12  16.39181  03 19 16.081  +17 26 21.12  25.7w 15VE173   568  C~2nwG      

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     0.05       0.00    -0.15
     2   0.0003     -7.65    -0.02       0.16    -0.08
     3   0.0006    -15.56     0.02       0.35     0.03
     4   0.7319   8146.80    -0.23     155.99     0.04
     5   0.8031   8083.46     0.19     132.64     0.16
     6   0.8193   7948.42    -0.20     127.74     0.04
     7   0.8875   6944.27     0.31     112.19    -0.15
     8   0.8875   6943.65     0.07     112.37     0.03
     9   0.8903   6890.14    -0.10     112.07     0.13
    10   0.8904   6887.07     0.06     111.94     0.00
    11   0.9721   5010.53     0.06     108.87    -0.05
    12   0.9723   5007.69     0.15     108.88    -0.06
    13   0.9724   5004.65     0.06     108.99     0.02
    14   0.9808   4791.50    -0.18     109.74    -0.05
    15   0.9996   4318.47    -0.01     112.41     0.10
    16   0.9997   4315.07    -0.15     112.48     0.13
    17   1.0516   3059.74    -0.07     124.81    -0.04
    18   1.1393   1491.36    -0.09     161.54    -0.12
    19   1.1416   1465.24     0.02     162.97     0.18
    20   1.2321   1143.30    -0.01     212.54     0.10
    21   1.8051  12304.60    -0.11     242.31     0.02
    22   1.8599  11691.35     0.04     228.55    -0.05
    23   1.8977  11019.34    -0.04     222.34    -0.03
    24   1.8978  11016.18     0.05     222.40     0.03
    25   1.9444   9982.48     0.11     219.53    -0.05
    26   1.9610   9579.96    -0.00     219.96    -0.06
    27   1.9612   9575.02    -0.05     220.00    -0.03
    28   1.9637   9512.77    -0.04     220.13    -0.03
    29   1.9661   9452.76     0.04     220.26    -0.02
    30   2.1027   6293.43    -0.05     255.31     0.02
    31   2.1028   6292.74     0.11     255.28    -0.03
    32   2.1276   5895.95    -0.14     266.44    -0.10
    33   2.1277   5895.45     0.05     266.52    -0.04
    34   2.1931   5320.73     0.14     300.31     0.07
    35   2.8345  16273.06    -0.06     344.80    -0.03
    36   2.8509  16070.61     0.11     341.34     0.14
    37   2.8537  16031.99    -0.03     340.50    -0.12
    38   3.0803  10983.26    -0.12     357.37     0.14
    39   3.0803  10982.23    -0.03     357.25     0.00
    40   3.0804  10981.00     0.08     357.21    -0.07

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.

15VE173    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.115    45.129    45.101
ecceobj         0.089     0.090     0.088
incobj          1.760     1.760     1.760
qmin           40.213    40.175    40.230
qmax           49.587    49.636    49.504
amean          44.775    44.786    44.762
amin           44.416    44.429    44.405
amax           45.158    45.163    45.144
emean           0.084     0.085     0.083
emin            0.069     0.070     0.068
emax            0.099     0.099     0.097
imean           0.579     0.578     0.579
imin            0.345     0.346     0.345
imax            0.812     0.812     0.811
excite_mean     0.085     0.086     0.084
fracstop        1.000     1.000     1.000
cjmean          3.102     3.102     3.102

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       194.9     195.0     194.7
kozaiamp        180.0     179.9     180.0