Orbit Fit and Astrometric record for 15VM166

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: 15VM166   
# Created Fri Mar 29 01:18:26 2024
# Orbit generated from Bernstein formalism
# Fitting     38 observations of     38
# Arc:   2.85y
# First observation: 2014/11/17
#  Last observation: 2017/09/23
Preliminary a, adot, b, bdot, g, gdot:
   0.000367   0.030519   0.000003   0.000270   0.026309   0.000000
# Chi-squared of fit:     6.49 DOF:     70 RMS:  0.07
# Min/Max residuals:    -0.21    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.870903E-05  3.132701E-02  2.060516E-07  2.775262E-04  2.678509E-02  6.982845E-03
# Covariance matrix:
  3.9620E-13 -4.6288E-13  1.6555E-15 -2.9380E-15 -1.3878E-13 -3.6926E-12
 -4.6288E-13  6.9741E-13 -2.9561E-15  5.2329E-15  2.5108E-13  6.5803E-12
  1.6555E-15 -2.9561E-15  2.0404E-13 -1.2106E-13 -1.6195E-15 -3.3001E-14
 -2.9380E-15  5.2329E-15 -1.2106E-13  8.9260E-14  2.3752E-15  5.7166E-14
 -1.3878E-13  2.5108E-13 -1.6195E-15  2.3752E-15  2.5863E-13  3.1121E-12
 -3.6926E-12  6.5803E-12 -3.3001E-14  5.7166E-14  3.1121E-12  7.2204E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.652522   49.037733   -0.097489   -0.011051   -0.984551  2456979.004798
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           15.56220 +/-     0.011
Argument of Peri:      266.26078 +/-     0.045
Long of Asc Node:      100.65404 +/-     0.029
Inclination:             0.81278 +/-     0.000
Eccentricity:         0.44090707 +/-    0.0003
Semi-Major Axis:     63.08277024 +/-    0.0183
Time of Perihelion: 2449059.4677 +/-       4.4
Perihelion:          35.26913068 +/-    0.0189
Aphelion:            90.89640981 +/-    0.0308
Period (y)              501.0422 +/-      0.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.04196771 +/-    0.0005
Ecliptic Y           28.99975317 +/-    0.0005
Ecliptic Z           -0.42519910 +/-    0.0000
Ecliptic XDOT        -0.00195422 +/-    0.0000
Ecliptic YDOT         0.00263341 +/-    0.0000
Ecliptic ZDOT         0.00002034 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.31796739 +/-    0.0005
Geocenter to KBO     37.33420782 +/-    0.0007
# Hcoef:  8.28

The following table shows the complete astrometric record for 15VM166. 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 (15VM166) followed by the observatory code and reference code for the source of the astrometry.

2014 11  17.50402  03 07 04.689  +16 51 09.22  23.9r 15VM166   568  C~2lVe      
2014 11  19.29385  03 06 55.394  +16 50 31.81  24.1r 15VM166   568  C~2lVf      
2014 11  23.39737  03 06 34.200  +16 49 07.17  24.0r 15VM166   568  C~2lVf      
2015 09  07.63311  03 18 54.060  +17 39 05.64  24.4w 15VM166   568  C~2lVf      
2015 09  12.49674  03 18 46.571  +17 38 33.25  24.5w 15VM166   568  C~2lVf      
2015 10  07.54436  03 17 33.991  +17 33 40.18  24.3w 15VM166   568  C~2lVf      
2015 10  07.60373  03 17 33.759  +17 33 39.28  24.3w 15VM166   568  C~2lVf      
2015 10  09.58362  03 17 25.897  +17 33 08.20  24.4w 15VM166   568  C~2lVf      
2015 11  07.33788  03 15 09.265  +17 24 14.67  24.1r 15VM166   568  C~2lVf      
2015 11  07.38006  03 15 09.037  +17 24 13.79  23.9r 15VM166   568  C~2lVf      
2015 11  07.42224  03 15 08.814  +17 24 13.01  24.1r 15VM166   568  C~2lVf      
2015 11  10.50536  03 14 52.659  +17 23 10.31  24.3w 15VM166   568  C~2lVf      
2015 11  17.35218  03 14 16.691  +17 20 51.30  24.2w 15VM166   568  C~2lVf      
2015 11  17.39878  03 14 16.445  +17 20 50.32  24.1w 15VM166   568  C~2lVf      
2015 12  06.36096  03 12 40.785  +17 14 43.18  24.3w 15VM166   568  C~2lVf      
2015 12  06.49848  03 12 40.126  +17 14 40.66  24.4w 15VM166   568  C~2lVf      
2016 01  01.34872  03 10 58.734  +17 08 20.04  24.4w 15VM166   568  C~2lVf      
2016 01  07.41130  03 10 42.519  +17 07 21.80  24.4w 15VM166   568  C~2lVf      
2016 01  07.42868  03 10 42.455  +17 07 21.50  24.6w 15VM166   568  C~2lVf      
2016 01  08.25624  03 10 40.531  +17 07 14.74  24.4w 15VM166   568  C~2lVf      
2016 02  05.28768  03 10 15.844  +17 06 08.41  24.5w 15VM166   568  C~2lVf      
2016 02  10.30807  03 10 20.271  +17 06 32.17  24.6w 15VM166   568  C~2lVf      
2016 09  07.57363  03 25 52.104  +18 06 03.89        15VM166   568  C~2lVf      
2016 09  07.62568  03 25 52.031  +18 06 03.57        15VM166   568  C~2lVf      
2016 09  26.58416  03 25 11.852  +18 03 23.61  24.4w 15VM166   568  C~2lVf      
2016 10  05.48792  03 24 42.112  +18 01 29.69  24.6w 15VM166   568  C~2lVf      
2016 10  07.49247  03 24 34.579  +18 01 01.08  24.4w 15VM166   568  C~2lVf      
2016 10  07.58817  03 24 34.185  +18 00 59.55  24.4w 15VM166   568  C~2lVf      
2016 10  09.49252  03 24 26.761  +18 00 31.39  24.4w 15VM166   568  C~2lVf      
2016 10  09.54522  03 24 26.545  +18 00 30.58  24.4w 15VM166   568  C~2lVf      
2016 10  09.56525  03 24 26.468  +18 00 30.25  24.2w 15VM166   568  C~2lVf      
2016 10  09.61729  03 24 26.245  +18 00 29.41  24.2w 15VM166   568  C~2lVf      
2016 11  02.49681  03 22 35.832  +17 53 35.02  24.5w 15VM166   568  C~2lVf      
2016 11  04.47292  03 22 25.700  +17 52 57.22  24.2w 15VM166   568  C~2lVf      
2016 12  25.28177  03 18 21.734  +17 38 00.44  24.3w 15VM166   568  C~2lVf      
2016 12  28.42845  03 18 10.726  +17 37 21.24  24.5w 15VM166   568  C~2lVf      
2017 09  16.60340  03 32 33.449  +18 30 53.20  24.5w 15VM166   568  C~2lVf      
2017 09  23.54254  03 32 17.972  +18 29 54.59  24.4w 15VM166   568  C~2lVf      

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    -0.04       0.00    -0.01
     2   0.0049   -138.59     0.10       0.38    -0.10
     3   0.0161   -454.43    -0.05       1.98    -0.02
     4   0.8053  10569.84    -0.03      79.04     0.07
     5   0.8186  10457.77     0.04      75.34     0.01
     6   0.8872   9377.06    -0.07      60.62    -0.00
     7   0.8873   9373.61     0.00      60.61     0.00
     8   0.8928   9256.72    -0.05      59.77    -0.01
     9   0.9715   7227.12     0.17      55.00     0.07
    10   0.9716   7223.74     0.10      55.01     0.05
    11   0.9717   7220.45     0.13      55.09     0.11
    12   0.9802   6980.57    -0.03      55.33    -0.04
    13   0.9989   6446.65    -0.05      56.74     0.00
    14   0.9990   6442.99    -0.03      56.72    -0.05
    15   1.0509   5023.56    -0.07      65.13     0.03
    16   1.0513   5013.78    -0.04      65.21     0.00
    17   1.1221   3511.32    -0.04      85.76    -0.03
    18   1.1387   3271.72     0.15      91.91     0.07
    19   1.1387   3270.75    -0.18      91.86     0.01
    20   1.1410   3242.36    -0.01      92.74     0.07
    21   1.2178   2883.55     0.08     123.80    -0.04
    22   1.2315   2951.08    -0.07     129.65     0.04
    23   1.8072  16780.63     0.09     133.58    -0.05
    24   1.8073  16779.54     0.01     133.52    -0.08
    25   1.8592  16181.02    -0.02     121.29    -0.07
    26   1.8836  15739.21     0.12     116.95    -0.01
    27   1.8891  15627.38     0.19     116.14     0.02
    28   1.8893  15621.52    -0.09     116.07    -0.04
    29   1.8946  15511.32    -0.06     115.33    -0.01
    30   1.8947  15508.11    -0.09     115.31    -0.02
    31   1.8948  15506.96    -0.03     115.27    -0.06
    32   1.8949  15503.65    -0.21     115.25    -0.06
    33   1.9603  13866.23    -0.05     110.83     0.00
    34   1.9657  13716.07    -0.03     110.86    -0.02
    35   2.1048  10105.42     0.16     135.36     0.04
    36   2.1134   9942.89    -0.03     138.17     0.05
    37   2.8312  22741.31     0.03     182.17     0.00
    38   2.8502  22510.78    -0.01     178.06     0.06

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.

15VM166    quality flag:3

Type:          3:1EE     3:1EE     3:1EE

axisobj        64.098    64.158    64.038
ecceobj         0.450     0.451     0.450
incobj          0.813     0.813     0.813
qmin           34.634    34.606    34.630
qmax           92.970    93.092    92.921
amean          62.633    62.634    62.631
amin           61.463    61.401    61.533
amax           64.106    64.158    64.067
emean           0.437     0.437     0.436
emin            0.424     0.424     0.425
emax            0.450     0.451     0.450
imean           0.786     0.780     0.775
imin            0.669     0.594     0.685
imax            0.895     0.933     0.865
excite_mean     0.437     0.437     0.437
fracstop        1.000     1.000     1.000
cjmean          3.075     3.075     3.076

libcent 0       180.0     179.5     180.3
libamp  0       167.2     171.2     160.7
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       174.7     162.3     294.3
kozaiamp        180.0     180.0      59.8