Orbit Fit and Astrometric record for 15RX279

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: 15RX279   
# Created Fri Dec  3 02:13:30 2021
# Orbit generated from Bernstein formalism
# Fitting     28 observations of     28
# Arc:   1.53y
# First observation: 2015/06/23
#  Last observation: 2017/01/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000086   0.023570   0.000015   0.006706   0.024488   0.000000
# Chi-squared of fit:     7.39 DOF:     50 RMS:  0.09
# Min/Max residuals:    -0.20    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.544355E-05  2.304292E-02  4.385644E-06  6.588647E-03  2.405409E-02  2.426059E-04
# Covariance matrix:
  2.7156E-13  9.2123E-14 -3.0809E-14  1.4070E-13  3.2571E-13  1.2967E-11
  9.2123E-14  4.4958E-13 -4.7683E-14  2.2064E-13  4.7733E-13  2.0321E-11
 -3.0809E-14 -4.7683E-14  1.4105E-13 -1.6356E-13 -8.1413E-14 -4.8181E-12
  1.4070E-13  2.2064E-13 -1.6356E-13  4.1267E-13  3.8072E-13  2.3718E-11
  3.2571E-13  4.7733E-13 -8.1413E-14  3.8072E-13  7.7790E-13  3.5045E-11
  1.2967E-11  2.0321E-11 -4.8181E-12  2.3718E-11  3.5045E-11  2.1778E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.133344   10.809893    1.003779   -0.003053    0.159190  2457197.094148
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:          339.83055 +/-     2.472
Argument of Peri:       25.93018 +/-     2.696
Long of Asc Node:        5.46669 +/-     0.000
Inclination:            16.06019 +/-     0.001
Eccentricity:         0.04026765 +/-    0.0007
Semi-Major Axis:     43.04088709 +/-    0.0034
Time of Perihelion: 2462968.9569 +/-     708.2
Perihelion:          41.30773162 +/-    0.0308
Aphelion:            44.77404256 +/-    0.0308
Period (y)              282.3775 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.85559973 +/-    0.0015
Ecliptic Y            6.78017281 +/-    0.0003
Ecliptic Z            0.82252185 +/-    0.0000
Ecliptic XDOT        -0.00048182 +/-    0.0000
Ecliptic YDOT         0.00257238 +/-    0.0000
Ecliptic ZDOT         0.00075039 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.42254597 +/-    0.0015
Geocenter to KBO     41.57297484 +/-    0.0015
# Hcoef:  8.63

The following table shows the complete astrometric record for 15RX279. 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 (15RX279) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.59337  00 37 57.715  +05 19 15.70  24.8r 15RX279   568  C~2nvo      
2015 07  14.54596  00 38 10.205  +05 22 38.84  24.3r 15RX279   568  C~2nvo      
2015 07  19.51085  00 38 07.571  +05 22 51.29  25.0r 15RX279   568  C~2nvo      
2015 08  11.49932  00 37 28.654  +05 20 57.02  24.6r 15RX279   568  C~2nvo      
2015 09  08.40498  00 35 52.085  +05 13 10.76  24.4r 15RX279   568  C~2nvo      
2015 09  08.50910  00 35 51.637  +05 13 08.59  24.7r 15RX279   568  C~2nvo      
2015 09  08.55273  00 35 51.438  +05 13 07.51  24.7r 15RX279   568  C~2nvo      
2015 09  09.52831  00 35 47.355  +05 12 46.23  24.7w 15RX279   568  C~2nvo      
2015 09  10.46916  00 35 43.355  +05 12 25.40  25.1w 15RX279   568  C~2nvo      
2015 09  16.45837  00 35 17.249  +05 10 07.46  25.1w 15RX279   568  C~2nvo      
2015 10  03.38583  00 33 59.352  +05 03 04.81  25.3w 15RX279   568  C~2nvo      
2015 10  07.40769  00 33 40.580  +05 01 21.20  24.5r 15RX279   568  C~2nvo      
2015 11  07.24974  00 31 28.655  +04 49 01.96  25.0w 15RX279   568  C~2nvo      
2015 11  07.30254  00 31 28.458  +04 49 00.87  25.2w 15RX279   568  C~2nvo      
2015 11  10.38589  00 31 17.505  +04 47 59.64  24.8w 15RX279   568  C~2nvo      
2016 01  01.25515  00 30 03.463  +04 41 57.73  25.1w 15RX279   568  C~2nvo      
2016 09  06.45678  00 40 20.313  +06 06 48.76  25.4w 15RX279   568  C~2nvo      
2016 09  06.49805  00 40 20.144  +06 06 47.86  25.2w 15RX279   568  C~2nvo      
2016 09  26.43536  00 38 51.960  +05 59 05.80  25.0w 15RX279   568  C~2nvo      
2016 10  26.40787  00 36 35.012  +05 46 26.33  24.9r 15RX279   568  C~2nvo      
2016 10  26.47363  00 36 34.718  +05 46 24.77  24.4r 15RX279   568  C~2nvo      
2016 11  03.42622  00 36 02.380  +05 43 21.04  25.3w 15RX279   568  C~2nvo      
2016 11  03.49128  00 36 02.104  +05 43 19.65  25.1w 15RX279   568  C~2nvo      
2016 11  04.27124  00 35 59.121  +05 43 02.56  25.0w 15RX279   568  C~2nvo      
2016 11  04.33051  00 35 58.902  +05 43 01.24  25.0w 15RX279   568  C~2nvo      
2016 12  29.24332  00 34 18.518  +05 33 56.20  25.2w 15RX279   568  C~2nvo      
2016 12  29.26796  00 34 18.546  +05 33 56.36  24.9w 15RX279   568  C~2nvo      
2017 01  03.23891  00 34 22.499  +05 34 27.70  25.1w 15RX279   568  C~2nvo      

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    -0.01
     2   0.0574    251.28     0.02     113.66     0.09
     3   0.0710    219.98     0.16     140.54    -0.03
     4   0.1339   -359.43    -0.11     263.55     0.01
     5   0.2103  -1869.06     0.04     401.48    -0.01
     6   0.2106  -1876.07     0.03     402.12     0.09
     7   0.2107  -1879.23    -0.20     402.29     0.04
     8   0.2134  -1943.68     0.09     406.71    -0.02
     9   0.2160  -2006.81    -0.08     411.05     0.06
    10   0.2323  -2419.67     0.07     437.62    -0.16
    11   0.2787  -3656.17    -0.08     507.22    -0.18
    12   0.2897  -3954.90     0.16     522.49    -0.10
    13   0.3741  -6059.50    -0.08     620.72    -0.01
    14   0.3743  -6062.64    -0.09     620.88    -0.02
    15   0.3827  -6237.38    -0.01     629.26     0.19
    16   0.5247  -7398.44     0.15     734.06     0.05
    17   1.2070   3076.57     0.01    1790.78     0.05
    18   1.2071   3073.90     0.04    1790.94    -0.02
    19   1.2617   1682.39    -0.09    1881.07     0.07
    20   1.3438   -495.27     0.17    1984.57    -0.01
    21   1.3440   -499.91     0.04    1984.86     0.07
    22   1.3657  -1015.95     0.06    2005.62    -0.09
    23   1.3659  -1020.28    -0.19    2005.96     0.07
    24   1.3680  -1067.94    -0.07    2007.76     0.04
    25   1.3682  -1071.47     0.10    2007.83    -0.06
    26   1.5185  -2663.74    -0.16    2096.47     0.01
    27   1.5186  -2663.29     0.08    2096.45    -0.05
    28   1.5322  -2596.69     0.01    2102.02    -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.

15RX279    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.459    43.470    43.450
ecceobj         0.049     0.049     0.049
incobj         15.982    15.983    15.981
qmin           40.668    40.696    40.664
qmax           45.971    45.961    45.977
amean          43.227    43.238    43.218
amin           42.897    42.896    42.900
amax           43.574    43.576    43.551
emean           0.044     0.044     0.045
emin            0.033     0.033     0.033
emax            0.056     0.055     0.056
imean          16.055    16.056    16.054
imin           15.623    15.622    15.618
imax           16.512    16.506    16.504
excite_mean     0.280     0.280     0.280
fracstop        1.000     1.000     1.000
cjmean          2.997     2.997     2.997

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       172.6     172.1     172.8
kozaiamp        180.0     180.0     179.8