Orbit Fit and Astrometric record for 21CP5

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: 21CP5     
# Created Mon Dec  6 02:14:06 2021
# Orbit generated from Bernstein formalism
# Fitting     33 observations of     34
# Arc:   1.12y
# First observation: 2019/12/28
#  Last observation: 2021/02/11
Preliminary a, adot, b, bdot, g, gdot:
  -0.001444   0.254759  -0.000112   0.021137   0.089181   0.000000
# Chi-squared of fit:    22.44 DOF:     60 RMS:  0.15
# Min/Max residuals:    -0.36    0.34
# Exact a, adot, b, bdot, g, gdot:
  4.030650E-05  2.405706E-01  3.357617E-06  1.971138E-02  9.502383E-02 -5.778790E-02
# Covariance matrix:
  1.3047E-13  8.2132E-13 -1.4453E-15  8.5770E-14  2.0965E-13  3.7369E-12
  8.2132E-13  2.5486E-10 -4.1125E-13  2.3465E-11  5.0984E-11  1.0206E-09
 -1.4453E-15 -4.1125E-13  1.2595E-13 -1.5708E-13 -8.1408E-14 -1.6494E-12
  8.5770E-14  2.3465E-11 -1.5708E-13  2.3291E-12  4.6862E-12  9.4047E-11
  2.0965E-13  5.0984E-11 -8.1408E-14  4.6862E-12  1.0473E-11  2.0391E-10
  3.7369E-12  1.0206E-09 -1.6494E-12  9.4047E-11  2.0391E-10  4.0906E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.707169  122.731130    0.441473   -0.134333   -0.877290  2458845.942788
# Heliocentric elements and errors
Epoch:              2458840.5000  =  2019/12/23
Mean Anomaly:          359.86856 +/-     0.001
Argument of Peri:      331.32080 +/-     0.029
Long of Asc Node:      180.66845 +/-     0.001
Inclination:             9.23860 +/-     0.000
Eccentricity:         0.96896378 +/-    0.0002
Semi-Major Axis:    340.21617509 +/-    1.8916
Time of Perihelion: 2459677.3666 +/-       0.6
Perihelion:          10.55902538 +/-    0.0839
Aphelion:           669.87332480 +/-    3.7249
Period (y)             6275.3888 +/-     52.34
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -5.72963883 +/-    0.0002
Ecliptic Y            9.72829358 +/-    0.0003
Ecliptic Z           -1.59313188 +/-    0.0001
Ecliptic XDOT        -0.00497904 +/-    0.0000
Ecliptic YDOT        -0.00505799 +/-    0.0000
Ecliptic ZDOT         0.00081321 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   11.40204045 +/-    0.0003
Geocenter to KBO     10.52367633 +/-    0.0004
# Hcoef: 12.21

The following table shows the complete astrometric record for 21CP5. 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 (21CP5) followed by the observatory code and reference code for the source of the astrometry.

2019 12  28.441987 08 11 59.095  +11 03 42.53  22.2G 21CP5     F51  C~4Zx1      
2019 12  28.454025 08 11 58.954  +11 03 42.91  22.5G 21CP5     F51  C~4Zx1      
2019 12  28.466013 08 11 58.808  +11 03 43.22  22.3G 21CP5     F51  C~4Zx1      
2019 12  28.478041 08 11 58.668  +11 03 43.56  22.7G 21CP5     F51  C~4Zx1      
2020 01  01.559819 08 11 10.090  +11 05 40.18  22.0G 21CP5     F51  C~4Zx1      
2020 01  01.573333 08 11 09.909  +11 05 40.50  22.3G 21CP5     F51  C~4Zx1      
2020 01  01.586916 08 11 09.749  +11 05 41.25  22.4G 21CP5     F51  C~4Zx1      
2020 01  01.600497 08 11 09.579  +11 05 41.57  22.3G 21CP5     F51  C~4Zx1      
2020 01  17.377697 08 07 41.963  +11 16 31.65  22.6G 21CP5     F51  C~4Zx1      
2020 01  23.370339 08 06 19.095  +11 21 48.90  22.7G 21CP5     F51  C~4Zx1      
2020 01  23.381127 08 06 18.940  +11 21 49.67  22.5G 21CP5     F51  C~4Zx1      
2020 01  23.391894 08 06 18.796  +11 21 50.56  23.2G 21CP5     F51  C~4Zx1      
2020 11  16.606203 09 11 15.805  +08 52 09.89  22.7G 21CP5     F51  C~4Zx1      
2020 11  16.615594 09 11 15.832  +08 52 09.80  22.2G 21CP5     F51  C~4Zx1      
2020 11  16.625046 09 11 15.910  +08 52 09.38  22.1G 21CP5     F51  C~4Zx1      
2020 12  11.504103 09 11 46.673  +08 39 51.71  22.6G 21CP5     F51  C~4Zx1      
2020 12  11.515074 09 11 46.648  +08 39 51.27  23.1G 21CP5     F51  C~4Zx1      
2020 12  11.526079 09 11 46.615  +08 39 51.40  23.7G 21CP5     F51  C~4Zx1      
2020 12  11.537075 09 11 46.582  +08 39 51.14  22.6G 21CP5     F51  C~4Zx1      
2021 01  16.441738 09 06 49.799  +08 55 41.39  22.3G 21CP5     F51  C~4Zx1      
2021 02  07.361973 09 01 59.638  +09 21 07.83  22.1w 21CP5     F51  C~4Zx1      
2021 02  07.373616 09 01 59.487  +09 21 08.85  22.7w 21CP5     F51  C~4Zx1      
2021 02  07.385248 09 01 59.316  +09 21 09.67  22.5w 21CP5     F51  C~4Zx1      
2021 02  07.396919 09 01 59.156  +09 21 10.70  22.6w 21CP5     F51  C~4Zx1      
2021 02  08.25057  09 01 47.59   +09 22 19.5   21.9G 21CP5     807  C~4Zx1      
2021 02  08.25527  09 01 47.53   +09 22 19.9   21.9G 21CP5     807  C~4Zx1      
2021 02  08.25938  09 01 47.47   +09 22 20.2   22.0G 21CP5     807  C~4Zx1      
2021 02  09.414671 09 01 31.93   +09 23 52.8   23.1G 21CP5     V06  C~4Zx1      
2021 02  09.424976 09 01 31.80   +09 23 53.3         21CP5     V06  C~4Zx1      
2021 02  09.435293 09 01 31.60   +09 23 54.1   21.9G 21CP5     V06  C~4Zx1      
2021 02  09.445599 09 01 31.48   +09 23 54.8         21CP5     V06  C~4Zx1      
2021 02  11.289951 09 01 06.892  +09 26 25.53  22.3G 21CP5     568  C~4Zx1      
2021 02  11.291162 09 01 06.876  +09 26 25.65  22.5G 21CP5     568  C~4Zx1      
2021 02  11.292375 09 01 06.858  +09 26 25.73  22.4G 21CP5     568  C~4Zx1      

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    -0.02
     2   0.0000     -2.11    -0.05      -0.08     0.05
     3   0.0001     -4.27    -0.11      -0.25     0.04
     4   0.0001     -6.36    -0.07      -0.37     0.07
     5   0.0113   -729.64     0.05     -43.05    -0.14
     6   0.0113   -732.31    -0.09     -43.32    -0.28
     7   0.0113   -734.77    -0.02     -43.10     0.08
     8   0.0114   -737.29     0.00     -43.34    -0.02
     9   0.0546  -3861.09    -0.00     -71.86    -0.05
    10   0.0710  -5120.23     0.14     -24.12    -0.13
    11   0.0710  -5122.63     0.07     -23.85     0.03
    12   0.0710  -5124.89     0.13     -23.44     0.33
    13   0.8875  54088.22     0.23    5164.08    -0.27
    14   0.8875  54088.66    -0.23    5164.10     0.03
    15   0.8876  54089.97     0.18    5164.00     0.21
    16   0.9557  54766.30    -0.29    4553.53     0.25
    17   0.9557  54766.04    -0.00    4552.99    -0.07
    18   0.9557  54765.49     0.01    4552.98     0.15
    19   0.9558  54765.06     0.13    4552.59    -0.02
    20   1.0541  49978.62     0.15    4300.71    -0.04
    21   1.1141  45190.82     0.02    4663.75     0.02
    22   1.1141  45188.28     0.16    4664.17     0.15
    23   1.1141  45185.49     0.04    4664.31     0.00
    24   1.1142  45182.82     0.04    4664.70     0.10
    25   1.1165  44990.97     0.01    4687.32    -0.15
    26   1.1165  44989.97     0.08    4687.48    -0.11
    27   1.1165  44988.99     0.04    4687.54    -0.15
    28   1.1197  44731.32     0.27    4718.12     0.34
    29   1.1197  44729.24 (   0.52)   4718.10 (   0.05)
    30   1.1198  44726.03    -0.36    4718.11    -0.21
    31   1.1198  44724.04    -0.02    4718.33    -0.25
    32   1.1248  44315.55    -0.14    4770.96     0.01
    33   1.1248  44315.28    -0.14    4771.02     0.03
    34   1.1248  44314.99    -0.16    4771.03     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.

21CP5    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj       400.895   400.824   400.967
ecceobj         0.973     0.973     0.973
incobj          9.206     9.206     9.206
qmin            8.159   -12.519   -13.273
qmax         1830.949  ********  ********
amean         341.549  3406.924  2526.359
amin           43.287   367.263   232.112
amax          920.760  ********  9552.841
emean           0.941     0.992     0.988
emin            0.762     0.967     0.951
emax            0.989     1.001     1.006
imean           9.400    12.224    12.141
imin            8.008     4.493     3.808
imax           11.454   153.222   160.479
excite_mean     0.955     1.018     1.013
fracstop        0.118     0.265     0.488
cjmean          1.797     0.000     0.000

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       263.1     339.5     135.2
kozaiamp        179.3      20.3     180.0