Orbit Fit and Astrometric record for 15RK277

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: 15RK277   
# Created Sat Dec  4 02:13:29 2021
# Orbit generated from Bernstein formalism
# Fitting     50 observations of     50
# Arc:   1.53y
# First observation: 2015/06/23
#  Last observation: 2017/01/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000831   0.837536   0.006781  -0.135987   0.261048   0.000000
# Chi-squared of fit:   144.50 DOF:     94 RMS:  0.30
# Min/Max residuals:    -0.89    0.70
# Exact a, adot, b, bdot, g, gdot:
  4.826267E-05  4.744828E-01 -6.419875E-06 -7.601199E-02  1.522829E-01 -1.293943E-01
# Covariance matrix:
  2.6589E-13 -1.7175E-12 -7.2622E-14  3.3928E-13 -2.5726E-13 -1.7965E-12
 -1.7175E-12  1.4716E-11  6.2823E-13 -2.9543E-12  2.4549E-12  1.5762E-11
 -7.2622E-14  6.2823E-13  8.6390E-14 -1.7294E-13  1.0365E-13  6.7500E-13
  3.3928E-13 -2.9543E-12 -1.7294E-13  6.4030E-13 -4.9049E-13 -3.1740E-12
 -2.5726E-13  2.4549E-12  1.0365E-13 -4.9049E-13  4.4188E-13  2.6360E-12
 -1.7965E-12  1.5762E-11  6.7500E-13 -3.1740E-12  2.6360E-12  1.6934E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.422616    9.490568    1.007014   -0.005714    0.137193  2457197.020648
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:          355.86954 +/-     0.000
Argument of Peri:      219.27588 +/-     0.001
Long of Asc Node:      195.31074 +/-     0.000
Inclination:             9.53780 +/-     0.000
Eccentricity:         0.80254346 +/-    0.0000
Semi-Major Axis:     26.85382284 +/-    0.0009
Time of Perihelion: 2457773.6813 +/-       0.0
Perihelion:           5.30246282 +/-    0.0002
Aphelion:            48.40518286 +/-    0.0016
Period (y)              139.1609 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            6.49820592 +/-    0.0000
Ecliptic Y            0.06607796 +/-    0.0000
Ecliptic Z            0.27759469 +/-    0.0000
Ecliptic XDOT        -0.00364451 +/-    0.0000
Ecliptic YDOT         0.00803388 +/-    0.0000
Ecliptic ZDOT        -0.00146365 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    6.50446810 +/-    0.0000
Geocenter to KBO      6.56672730 +/-    0.0000
# Hcoef: 15.35

The following table shows the complete astrometric record for 15RK277. 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 (15RK277) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.51987  00 31 02.996  +05 59 14.89  24.1r 15RK277   568  C~2jiA      
2015 07  19.52115  00 37 52.516  +06 32 11.78  23.8r 15RK277   568  C~2jiA      
2015 08  13.54973  00 39 01.706  +06 26 21.35  23.0r 15RK277   568  C~2jiA      
2015 08  19.55891  00 38 29.010  +06 19 05.46  23.4r 15RK277   568  C~2jiA      
2015 08  19.62908  00 38 28.502  +06 18 59.65  23.3r 15RK277   568  C~2jiA      
2015 08  20.43431  00 38 22.827  +06 17 50.70  23.4r 15RK277   568  C~2jiA      
2015 08  20.48358  00 38 22.436  +06 17 46.54  23.2r 15RK277   568  C~2jiA      
2015 09  07.57262  00 34 54.515  +05 42 14.00  23.5w 15RK277   568  C~2jiA      
2015 09  09.40034  00 34 26.313  +05 37 41.93  23.3r 15RK277   568  C~2jiA      
2015 09  09.44140  00 34 25.640  +05 37 35.73  23.4r 15RK277   568  C~2jiA      
2015 09  09.48235  00 34 24.965  +05 37 29.56  23.4r 15RK277   568  C~2jiA      
2015 09  10.50662  00 34 08.582  +05 34 52.89  23.5w 15RK277   568  C~2jiA      
2015 09  16.45837  00 32 27.294  +05 18 51.70  23.3w 15RK277   568  C~2jiA      
2015 09  18.45683  00 31 51.232  +05 13 11.22  23.4w 15RK277   568  C~2jiA      
2015 09  18.49368  00 31 50.553  +05 13 05.05  23.0w 15RK277   568  C~2jiA      
2015 10  03.37463  00 27 03.471  +04 27 45.98  23.3w 15RK277   568  C~2jiA      
2015 10  07.34146  00 25 45.234  +04 15 13.13  22.7r 15RK277   568  C~2jiA      
2015 10  07.35041  00 25 45.055  +04 15 11.42  22.8r 15RK277   568  C~2jiA      
2015 10  07.39952  00 25 44.064  +04 15 02.11  22.9r 15RK277   568  C~2jiA      
2015 11  07.21826  00 17 29.020  +02 47 20.18  23.4w 15RK277   568  C~2jiA      
2015 11  07.27072  00 17 28.446  +02 47 13.12  23.5w 15RK277   568  C~2jiA      
2015 11  08.31542  00 17 17.874  +02 44 53.54  23.4w 15RK277   568  C~2jiA      
2015 11  10.34786  00 16 58.878  +02 40 32.02  23.4w 15RK277   568  C~2jiA      
2015 12  07.28927  00 16 28.624  +02 07 34.63  23.7w 15RK277   568  C~2jiA      
2016 01  01.22912  00 22 32.354  +02 21 52.80  24.0w 15RK277   568  C~2jiA      
2016 09  05.55814  03 13 07.252  +13 25 21.24        15RK277   568  C~2jiA      
2016 09  06.50690  03 13 16.089  +13 24 10.85        15RK277   568  C~2jiA      
2016 09  06.54949  03 13 16.439  +13 24 07.66        15RK277   568  C~2jiA      
2016 09  27.46148  03 13 52.978  +12 47 17.05  23.2w 15RK277   568  C~2jiA      
2016 10  26.50481  03 07 21.407  +11 30 43.85        15RK277   568  C~2jiA      
2016 10  26.50990  03 07 21.287  +11 30 42.82        15RK277   568  C~2jiA      
2016 10  26.51417  03 07 21.243  +11 30 42.30        15RK277   568  C~2jiA      
2016 10  26.51845  03 07 21.094  +11 30 41.17        15RK277   568  C~2jiA      
2016 10  26.52700  03 07 20.945  +11 30 40.12        15RK277   568  C~2jiA      
2016 10  26.53127  03 07 20.856  +11 30 39.18        15RK277   568  C~2jiA      
2016 10  26.53560  03 07 20.748  +11 30 38.58        15RK277   568  C~2jiA      
2016 10  26.53988  03 07 20.674  +11 30 37.21        15RK277   568  C~2jiA      
2016 10  26.54416  03 07 20.613  +11 30 37.18        15RK277   568  C~2jiA      
2016 10  26.54843  03 07 20.509  +11 30 36.42        15RK277   568  C~2jiA      
2016 10  26.55273  03 07 20.425  +11 30 35.74        15RK277   568  C~2jiA      
2016 10  26.56130  03 07 20.223  +11 30 33.86        15RK277   568  C~2jiA      
2016 10  26.56557  03 07 20.176  +11 30 33.45        15RK277   568  C~2jiA      
2016 10  26.57063  03 07 20.036  +11 30 32.36        15RK277   568  C~2jiA      
2016 11  03.50445  03 04 35.019  +11 07 56.80        15RK277   568  C~2jiA      
2016 11  03.56832  03 04 33.600  +11 07 46.01  22.8w 15RK277   568  C~2jiA      
2016 12  28.37745  02 50 26.331  +09 34 54.05        15RK277   568  C~2jiA      
2016 12  29.34301  02 50 25.079  +09 34 52.56        15RK277   568  C~2jiA      
2017 01  01.23830  02 50 25.263  +09 35 10.82        15RK277   568  C~2jiA      
2017 01  01.30511  02 50 25.287  +09 35 11.60        15RK277   568  C~2jiA      
2017 01  02.35003  02 50 26.804  +09 35 26.74        15RK277   568  C~2jiA      

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     0.21       0.00    -0.30
     2   0.0712   6393.79    -0.29    -582.16    -0.27
     3   0.1397   7206.62    -0.21   -1308.60    -0.26
     4   0.1562   6586.87    -0.72   -1519.16    -0.01
     5   0.1564   6577.62    -0.36   -1521.55    -0.06
     6   0.1586   6472.67    -0.43   -1551.89    -0.20
     7   0.1587   6465.67    -0.39   -1553.44    -0.11
     8   0.2082   2774.10    -0.08   -2298.77    -0.01
     9   0.2132   2279.98    -0.23   -2383.49     0.05
    10   0.2133   2268.30    -0.23   -2385.24     0.05
    11   0.2134   2256.61    -0.23   -2386.95     0.08
    12   0.2163   1970.09    -0.12   -2434.84    -0.00
    13   0.2325    201.21     0.01   -2723.16     0.05
    14   0.2380   -428.08    -0.01   -2823.86    -0.13
    15   0.2381   -439.83     0.31   -2825.53    -0.07
    16   0.2789  -5457.83     0.15   -3629.05    -0.05
    17   0.2897  -6832.01     0.23   -3857.28     0.01
    18   0.2897  -6835.15     0.25   -3857.79    -0.01
    19   0.2899  -6852.47     0.33   -3860.47    -0.03
    20   0.3743 -15776.83     0.24   -5751.78     0.17
    21   0.3744 -15787.60     0.27   -5754.85     0.19
    22   0.3773 -15989.86     0.55   -5820.17     0.21
    23   0.3828 -16357.68     0.50   -5947.42     0.18
    24   0.4566 -17572.86     0.36   -7589.01     0.21
    25   0.5249 -12199.21    -0.21   -8968.53     0.27
    26   1.2048 174145.85     0.39  -29332.46     0.25
    27   1.2074 174332.68     0.27  -29476.92     0.27
    28   1.2075 174339.92     0.18  -29483.15     0.27
    29   1.2647 174324.67     0.70  -32498.85     0.14
    30   1.3442 163075.57    -0.02  -35605.53     0.03
    31   1.3443 163072.34    -0.43  -35605.98    -0.06
    32   1.3443 163071.11     0.69  -35606.32    -0.09
    33   1.3443 163067.17    -0.89  -35606.71    -0.16
    34   1.3443 163063.26    -0.08  -35607.00     0.18
    35   1.3443 163060.80    -0.18  -35607.55    -0.06
    36   1.3443 163058.03    -0.56  -35607.56     0.25
    37   1.3443 163055.75    -0.49  -35608.74    -0.62
    38   1.3444 163054.31     0.43  -35608.37     0.07
    39   1.3444 163051.58     0.05  -35608.60     0.15
    40   1.3444 163049.34     0.18  -35608.87     0.20
    41   1.3444 163043.86    -0.59  -35609.82    -0.11
    42   1.3444 163042.59     0.49  -35610.01     0.02
    43   1.3444 163038.88    -0.44  -35610.40    -0.00
    44   1.3661 158674.07     0.64  -36153.65    -0.09
    45   1.3663 158637.23     0.65  -36157.18     0.00
    46   1.5164 137914.95    -0.39  -37055.91    -0.12
    47   1.5190 137888.28    -0.41  -37049.27    -0.12
    48   1.5269 137899.38    -0.15  -37029.49    -0.10
    49   1.5271 137900.19    -0.14  -37028.75    -0.15
    50   1.5300 137937.81     0.06  -37021.46    -0.17

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.

15RK277    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        27.038    27.044    27.032
ecceobj         0.805     0.805     0.805
incobj          9.542     9.542     9.542
qmin            4.966     5.285     5.284
qmax           67.931    58.879    75.538
amean          24.279    29.573    35.078
amin           15.983    27.044    27.032
amax           36.650    32.102    40.474
emean           0.770     0.819     0.843
emin            0.688     0.805     0.805
emax            0.854     0.834     0.866
imean           9.198     9.510     9.266
imin            8.134     9.404     9.076
imax           11.404     9.615     9.615
excite_mean     0.787     0.836     0.858
fracstop        0.002     0.000     0.000
cjmean          2.430     2.144     2.016

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       274.7     221.9     224.5
kozaiamp         61.5       2.9       4.5