Orbit Fit and Astrometric record for 52975

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: 52975     
# Created Mon Aug 10 01:06:43 2020
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   84 observations of   84
# Arc:  21.28y
# First observation: 1998/10/12
#  Last observation: 2020/01/23
# Chi-squared of fit:   177.82 DOF:  162 RMS:  0.26
# Min/Max residuals:    -0.79    1.43
# Exact a, adot, b, bdot, g, gdot:
  2.532023E-05  9.019639E-02  5.756527E-06  2.036520E-02  5.730469E-02  2.570234E-02
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.156251   48.575179    0.486855   -0.017634   -0.862333  2451098.935271
# Heliocentric elements and errors
Epoch:              2451098.5000  =  1998/10/12
Mean Anomaly:           23.84363 +/-     0.000
Argument of Peri:      301.49561 +/-     0.000
Long of Asc Node:       51.95508 +/-     0.000
Inclination:            12.62013 +/-     0.000
Eccentricity:         0.38417794 +/-    0.0000
Semi-Major Axis:     26.41429496 +/-    0.0000
Time of Perihelion: 2447814.3206 +/-       0.0
Perihelion:          16.26650561 +/-    0.0000
Aphelion:            36.56208431 +/-    0.0000
Period (y)              135.7584 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.48738862 +/-    0.0000
Ecliptic Y           13.40608320 +/-    0.0000
Ecliptic Z           -0.35202534 +/-    0.0000
Ecliptic XDOT        -0.00240608 +/-    0.0000
Ecliptic YDOT         0.00379560 +/-    0.0000
Ecliptic ZDOT         0.00094797 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   18.32423969 +/-    0.0000
Geocenter to KBO     17.45048896 +/-    0.0000
# Hcoef:  8.86

The following table shows the complete astrometric record for 52975. 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 (52975) followed by the observatory code and reference code for the source of the astrometry.

1998 10  12.43454  03 05 47.77   +16 14 29.8   22.5V 52975     691  Ca4828      
1998 10  12.45637  03 05 47.57   +16 14 28.9   22.5V 52975     691  Ca4828      
1998 10  12.47876  03 05 47.37   +16 14 27.9   22.1V 52975     691  Ca4828      
1998 10  18.36511  03 04 54.09   +16 11 49.3   21.9V 52975     691  Ca4828      
1998 10  18.38773  03 04 53.91   +16 11 48.7   21.9V 52975     691  Ca4828      
1998 10  18.41832  03 04 53.59   +16 11 47.5   21.8V 52975     691  Ca4828      
1998 10  28.39461  03 03 15.66   +16 06 49.2   22.3V 52975     691  C48547      
1998 10  28.41605  03 03 15.42   +16 06 48.3   22.3V 52975     691  C48547      
1998 10  28.43854  03 03 15.20   +16 06 47.4   22.4V 52975     691  C48547      
1999 10  16.37780  03 24 27.73   +18 38 35.7   22.1V 52975     691  Ca7321      
1999 10  16.41973  03 24 27.41   +18 38 35.7   21.6V 52975     691  Ca7321      
1999 10  16.44738  03 24 27.18   +18 38 34.8   22.1V 52975     691  Ca7321      
1999 10  17.36925  03 24 19.12   +18 38 16.4   22.4V 52975     691  Ca7321      
1999 10  17.39804  03 24 18.96   +18 38 15.6   22.4V 52975     691  Ca7321      
1999 10  17.42572  03 24 18.64   +18 38 15.0   22.5V 52975     691  Ca7321      
1999 12  05.14678  03 16 08.70   +18 16 46.8   21.1R 52975     829  Cd2213      
1999 12  05.16484  03 16 08.50   +18 16 47.0         52975     829  Cd2213      
2000 01  02.18515  03 12 32.07   +18 07 48.3   21.5R 52975     697  Ca8493      
2000 01  02.32828  03 12 31.27   +18 07 46.5   21.6R 52975     697  Ca8493      
2000 01  03.23405  03 12 26.45   +18 07 37.1   21.5R 52975     697  Ca8493      
2000 11  28.30228  03 36 02.44   +20 34 42.6   21.1R 52975     695  Cc2187      
2000 11  28.35573  03 36 01.88   +20 34 41.3   21.1R 52975     695  Cc2187      
2000 11  29.28721  03 35 52.30   +20 34 18.1   21.2R 52975     695  Cc2187      
2002 10  30.40597  04 17 32.57   +24 30 33.1         52975     695  Ch3055      
2002 10  30.41891  04 17 32.45   +24 30 33.1         52975     695  Ch3055      
2002 10  30.46756  04 17 32.01   +24 30 32.8         52975     695  Ch3055      
2008 09  25.65865  05 56 27.98   +30 45 02.6   24.6R 52975     250  S~06FL      
2008 09  25.66560  05 56 27.99   +30 45 02.7         52975     250  S~06FM      
2008 09  25.67879  05 56 28.01   +30 45 02.7         52975     250  S~06FM      
2010 01  07.352462 06 00 00.793  +31 45 21.71  22.0G 52975     F51  C~41k3      
2010 01  07.362189 06 00 00.703  +31 45 21.57  21.5G 52975     F51  C~41k3      
2013 09  14.608901 07 01 48.893  +32 13 20.75  22.7G 52975     F51  C~41k3      
2013 10  21.566665 07 03 27.458  +32 27 20.74  22.0G 52975     F51  C~41k3      
2013 11  27.585538 07 00 59.823  +32 45 18.33  22.2G 52975     F51  C~41k3      
2013 11  28.487981 07 00 53.568  +32 45 43.98  22.3G 52975     F51  C~41k3      
2013 12  26.373655 06 56 59.559  +32 56 51.50  22.1G 52975     F51  C~41k3      
2013 12  26.389073 06 56 59.383  +32 56 52.20  22.2G 52975     F51  C~41k3      
2013 12  26.404510 06 56 59.258  +32 56 52.23  22.2G 52975     F51  C~41k3      
2014 12  26.558051 07 09 35.374  +33 00 35.73  22.5G 52975     F51  C~41k3      
2015 01  18.291277 07 06 06.138  +33 06 48.00  22.1G 52975     F51  C~41k3      
2015 01  18.304570 07 06 06.031  +33 06 48.23  22.6G 52975     F51  C~41k3      
2015 01  18.317838 07 06 05.907  +33 06 48.46  23.0G 52975     F51  C~41k3      
2015 01  18.331206 07 06 05.769  +33 06 48.58  22.6G 52975     F51  C~41k3      
2015 01  20.323648 07 05 47.899  +33 07 08.43  22.5G 52975     F51  C~41k3      
2015 01  20.335582 07 05 47.808  +33 07 08.46  22.9G 52975     F51  C~41k3      
2015 01  20.347482 07 05 47.668  +33 07 08.53  23.1G 52975     F51  C~41k3      
2015 01  20.359426 07 05 47.580  +33 07 08.67  22.5G 52975     F51  C~41k3      
2015 01  22.287731 07 05 30.504  +33 07 25.60  23.2G 52975     F51  C~41k3      
2015 01  22.299639 07 05 30.383  +33 07 25.74  22.6G 52975     F51  C~41k3      
2015 01  22.311514 07 05 30.285  +33 07 25.75  23.0G 52975     F51  C~41k3      
2015 01  22.323414 07 05 30.163  +33 07 25.80  22.9G 52975     F51  C~41k3      
2015 12  04.649266 07 24 38.664  +32 49 22.69  22.4G 52975     F51  C~41k3      
2016 12  25.523587 07 33 28.024  +32 54 43.57  22.8G 52975     F51  C~41k3      
2016 12  25.533897 07 33 27.920  +32 54 43.80  22.6G 52975     F51  C~41k3      
2017 01  28.436986 07 28 29.761  +33 05 45.55  22.6G 52975     F51  C~41k3      
2017 10  03.631841 07 48 22.695  +32 05 51.65  22.8G 52975     F51  C~41k3      
2017 10  29.548569 07 49 12.666  +32 15 37.74  23.0G 52975     F51  C~41k3      
2018 01  15.335808 07 41 45.246  +32 54 58.73  22.8G 52975     F51  C~41k3      
2018 01  15.348314 07 41 45.155  +32 54 59.05  23.2G 52975     F51  C~41k3      
2018 01  15.360803 07 41 45.017  +32 54 59.31  23.0G 52975     F51  C~41k3      
2018 01  15.373296 07 41 44.906  +32 54 59.50  22.5G 52975     F51  C~41k3      
2018 12  17.575809 07 56 33.895  +32 29 55.90  23.5G 52975     F51  C~41k3      
2018 12  17.588106 07 56 33.796  +32 29 56.26  23.1G 52975     F51  C~41k3      
2018 12  17.600446 07 56 33.720  +32 29 56.83  23.7G 52975     F51  C~41k3      
2018 12  17.612723 07 56 33.614  +32 29 57.20  22.9G 52975     F51  C~41k3      
2019 01  02.527066 07 54 30.290  +32 38 19.48  23.0G 52975     F51  C~41k3      
2019 01  02.538102 07 54 30.174  +32 38 19.51  22.8G 52975     F51  C~41k3      
2019 01  02.549143 07 54 30.120  +32 38 19.92  23.0G 52975     F51  C~41k3      
2019 01  02.560125 07 54 30.010  +32 38 20.16  23.1G 52975     F51  C~41k3      
2019 01  09.363064 07 53 32.612  +32 41 28.88  22.2G 52975     F51  C~41k3      
2019 01  09.374956 07 53 32.512  +32 41 28.82  23.0G 52975     F51  C~41k3      
2019 01  09.386904 07 53 32.420  +32 41 29.01  23.2G 52975     F51  C~41k3      
2019 01  09.398878 07 53 32.298  +32 41 29.55  23.3G 52975     F51  C~41k3      
2019 12  30.570518 08 05 22.535  +32 22 15.21  23.3G 52975     F51  C~41k3      
2020 01  19.371308 08 02 38.909  +32 31 35.49  22.6G 52975     F51  C~41k3      
2020 01  19.383619 08 02 38.807  +32 31 35.75  23.0G 52975     F51  C~41k3      
2020 01  19.395923 08 02 38.705  +32 31 35.84  24.0G 52975     F51  C~41k3      
2020 01  19.408403 08 02 38.583  +32 31 36.18  23.2G 52975     F51  C~41k3      
2020 01  21.368860 08 02 21.926  +32 32 21.80  23.2G 52975     F51  C~41k3      
2020 01  21.382993 08 02 21.812  +32 32 22.03  23.3G 52975     F51  C~41k3      
2020 01  21.397153 08 02 21.687  +32 32 22.27  23.1G 52975     F51  C~41k3      
2020 01  21.411305 08 02 21.559  +32 32 22.86  23.2G 52975     F51  C~41k3      
2020 01  22.386801 08 02 13.278  +32 32 44.79  23.1G 52975     F51  C~41k3      
2020 01  23.545315 08 02 03.432  +32 33 09.77  23.4G 52975     F51  C~41k3      

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    -0.08       0.00    -0.05
  2   0.0001      0.00    -0.17       0.00    -0.38
  3   0.0001      0.00    -0.20       0.00    -0.79
  4   0.0162      0.00    -0.15       0.00     0.23
  5   0.0163      0.00     0.40       0.00     0.27
  6   0.0164      0.00    -0.02       0.00    -0.05
  7   0.0437      0.00    -0.42       0.00     0.02
  8   0.0438      0.00    -0.69       0.00    -0.21
  9   0.0438      0.00    -0.51       0.00    -0.39
 10   1.0101      0.00    -0.03       0.00    -0.50
 11   1.0102      0.00     0.71       0.00     0.35
 12   1.0103      0.00     0.91       0.00     0.02
 13   1.0128      0.00    -0.02       0.00     0.55
 14   1.0129      0.00     1.43       0.00     0.35
 15   1.0130      0.00     0.34       0.00     0.33
 16   1.1464      0.00     0.06       0.00     0.06
 17   1.1464      0.00    -0.30       0.00     0.72
 18   1.2231      0.00     0.05       0.00     0.19
 19   1.2235      0.00     0.04       0.00     0.01
 20   1.2260      0.00     0.06       0.00     0.04
 21   2.1297      0.00    -0.14       0.00    -0.26
 22   2.1298      0.00    -0.12       0.00    -0.21
 23   2.1324      0.00    -0.06       0.00    -0.22
 24   4.0492      0.00    -0.55       0.00    -0.05
 25   4.0492      0.00    -0.60       0.00     0.04
 26   4.0494      0.00    -0.64       0.00     0.09
 27   9.9554      0.00     0.06       0.00     0.22
 28   9.9555      0.00     0.07       0.00     0.15
 29   9.9555      0.00     0.09       0.00    -0.18
 30  11.2387      0.00    -0.24       0.00    -0.11
 31  11.2387      0.00    -0.18       0.00    -0.24
 32  14.9245      0.00     0.01       0.00     0.00
 33  15.0257      0.00    -0.17       0.00    -0.35
 34  15.1270      0.00     0.00       0.00    -0.16
 35  15.1295      0.00     0.08       0.00     0.16
 36  15.2059      0.00     0.07       0.00    -0.18
 37  15.2059      0.00    -0.39       0.00     0.22
 38  15.2059      0.00    -0.07       0.00    -0.04
 39  16.2057      0.00    -0.13       0.00    -0.03
 40  16.2679      0.00    -0.06       0.00    -0.20
 41  16.2680      0.00     0.16       0.00    -0.12
 42  16.2680      0.00     0.12       0.00    -0.03
 43  16.2680      0.00    -0.11       0.00    -0.06
 44  16.2735      0.00     0.04       0.00     0.09
 45  16.2735      0.00     0.30       0.00     0.00
 46  16.2735      0.00    -0.18       0.00    -0.04
 47  16.2736      0.00     0.12       0.00    -0.02
 48  16.2789      0.00     0.32       0.00     0.04
 49  16.2789      0.00     0.10       0.00     0.07
 50  16.2789      0.00     0.23       0.00    -0.02
 51  16.2790      0.00    -0.00       0.00    -0.08
 52  17.1450      0.00    -0.04       0.00    -0.03
 53  18.2042      0.00     0.11       0.00     0.05
 54  18.2042      0.00    -0.12       0.00     0.00
 55  18.2971      0.00     0.19       0.00    -0.05
 56  18.9766      0.00    -0.25       0.00     0.32
 57  19.0475      0.00     0.03       0.00    -0.02
 58  19.2605      0.00     0.01       0.00    -0.01
 59  19.2605      0.00     0.32       0.00     0.04
 60  19.2606      0.00    -0.07       0.00     0.04
 61  19.2606      0.00    -0.06       0.00    -0.04
 62  20.1811      0.00     0.04       0.00     0.00
 63  20.1811      0.00    -0.11       0.00    -0.05
 64  20.1812      0.00     0.08       0.00     0.12
 65  20.1812      0.00    -0.18       0.00     0.08
 66  20.2248      0.00     0.04       0.00     0.20
 67  20.2248      0.00    -0.30       0.00    -0.09
 68  20.2248      0.00     0.29       0.00     0.00
 69  20.2248      0.00     0.03       0.00    -0.07
 70  20.2435      0.00     0.02       0.00     0.35
 71  20.2435      0.00     0.07       0.00    -0.03
 72  20.2435      0.00     0.24       0.00    -0.15
 73  20.2436      0.00    -0.02       0.00     0.07
 74  21.2160      0.00    -0.21       0.00    -0.24
 75  21.2702      0.00     0.04       0.00     0.19
 76  21.2702      0.00     0.11       0.00     0.15
 77  21.2703      0.00     0.17       0.00    -0.05
 78  21.2703      0.00    -0.04       0.00    -0.01
 79  21.2757      0.00    -0.09       0.00     0.02
 80  21.2757      0.00     0.03       0.00    -0.07
 81  21.2757      0.00    -0.01       0.00    -0.16
 82  21.2758      0.00    -0.09       0.00     0.11
 83  21.2784      0.00    -0.12       0.00     0.14
 84  21.2816      0.00    -0.12       0.00    -0.18

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.

52975    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        26.440    26.440    26.439
ecceobj         0.384     0.384     0.384
incobj         12.613    12.613    12.613
qmin           16.231    15.874    16.231
qmax           36.731    36.744    36.719
amean          26.310    25.825    26.332
amin           25.972    25.194    26.132
amax           26.724    26.735    26.715
emean           0.373     0.366     0.374
emin            0.366     0.344     0.366
emax            0.384     0.384     0.384
imean          11.813    12.040    11.821
imin           11.760    10.992    11.779
imax           11.868    13.824    11.879
excite_mean     0.426     0.422     0.426
fracstop        0.002     0.016     0.001
cjmean          2.838     2.849     2.837

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       305.2     186.9     305.0
kozaiamp          3.7     179.2       3.1