Orbit Fit and Astrometric record for 15RT245

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: 15RT245   
# Created Sat Dec 16 02:38:11 2017
# Orbit generated from Bernstein formalism
# Fitting   43 observations of   43
# Arc:   1.60y
# First observation: 2015/06/23
#  Last observation: 2017/01/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000131   0.024276   0.000004   0.000320   0.024211   0.000000
# Chi-squared of fit:     4.72 DOF:   80 RMS:  0.06
# Min/Max residuals:    -0.16    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.551082E-05  2.371146E-02  5.502508E-07  3.203184E-04  2.383575E-02  2.054773E-03
# Covariance matrix:
  2.5257E-13  8.7584E-14 -3.4077E-15  7.8851E-15  2.8283E-13  1.1901E-11
  8.7584E-14  2.7519E-13 -3.6294E-15  9.4112E-15  2.9139E-13  1.4544E-11
 -3.4077E-15 -3.6294E-15  8.5129E-14 -7.3827E-14 -6.1835E-15 -3.1130E-13
  7.8851E-15  9.4112E-15 -7.3827E-14  1.0500E-13  1.5553E-14  9.2060E-13
  2.8283E-13  2.9139E-13 -6.1835E-15  1.5553E-14  5.0113E-13  2.3892E-11
  1.1901E-11  1.4544E-11 -3.1130E-13  9.2060E-13  2.3892E-11  1.4567E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.547223    6.675453    1.012614   -0.000735    0.086825  2457197.071048
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           45.54399 +/-     0.535
Argument of Peri:      342.10957 +/-     0.707
Long of Asc Node:      330.50833 +/-     0.027
Inclination:             0.96118 +/-     0.001
Eccentricity:         0.08097382 +/-    0.0014
Semi-Major Axis:     44.22162692 +/-    0.0103
Time of Perihelion: 2443601.7633 +/-     159.7
Perihelion:          40.64083294 +/-    0.0609
Aphelion:            47.80242089 +/-    0.0612
Period (y)              294.0765 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.69544321 +/-    0.0012
Ecliptic Y            3.86135593 +/-    0.0001
Ecliptic Z            0.40076870 +/-    0.0000
Ecliptic XDOT        -0.00008501 +/-    0.0000
Ecliptic YDOT         0.00272627 +/-    0.0000
Ecliptic ZDOT         0.00003911 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.87577665 +/-    0.0012
Geocenter to KBO     41.95378293 +/-    0.0012
# Hcoef:  6.60

The following table shows the complete astrometric record for 15RT245. 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 (15RT245) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.57027  00 23 38.936  +03 09 10.33  22.3r 15RT245   568  C~2Gdr      
2015 07  14.58775  00 23 46.573  +03 10 22.10  23.1r 15RT245   568  C~2Gdr      
2015 07  19.56683  00 23 42.860  +03 10 03.34  23.2r 15RT245   568  C~2Gdr      
2015 08  11.46704  00 23 00.440  +03 05 51.56  22.9r 15RT245   568  C~2Gdr      
2015 08  11.51159  00 23 00.315  +03 05 50.85  22.4r 15RT245   568  C~2Gdr      
2015 09  08.37633  00 21 23.022  +02 55 42.29  22.9r 15RT245   568  C~2Gdr      
2015 09  08.48053  00 21 22.585  +02 55 39.56  22.8r 15RT245   568  C~2Gdr      
2015 09  08.52274  00 21 22.408  +02 55 38.43  22.9r 15RT245   568  C~2Gdr      
2015 09  09.49961  00 21 18.356  +02 55 12.71  23.2w 15RT245   568  C~2Gdr      
2015 09  10.44054  00 21 14.432  +02 54 47.78  22.4w 15RT245   568  C~2Gdr      
2015 09  16.42148  00 20 48.886  +02 52 05.40  23.1w 15RT245   568  C~2Gdr      
2015 10  03.33607  00 19 33.849  +02 44 04.67  22.1r 15RT245   568  C~2Gdr      
2015 10  03.34821  00 19 33.795  +02 44 04.26  23.0w 15RT245   568  C~2Gdr      
2015 10  03.40228  00 19 33.548  +02 44 02.69  22.5w 15RT245   568  C~2Gdr      
2015 10  07.28650  00 19 16.334  +02 42 11.63  22.8r 15RT245   568  C~2Gdr      
2015 10  07.31809  00 19 16.186  +02 42 10.78  22.8r 15RT245   568  C~2Gdr      
2015 10  07.37159  00 19 15.946  +02 42 09.24  22.0r 15RT245   568  C~2Gdr      
2015 11  05.24319  00 17 20.830  +02 29 39.24  22.6w 15RT245   568  C~2Gdr      
2015 11  07.21299  00 17 14.340  +02 28 56.56  22.2w 15RT245   568  C~2Gdr      
2015 11  07.26547  00 17 14.164  +02 28 55.46  22.4w 15RT245   568  C~2Gdr      
2015 11  08.31016  00 17 10.814  +02 28 33.55  23.1w 15RT245   568  C~2Gdr      
2015 11  08.37107  00 17 10.629  +02 28 32.10  23.4w 15RT245   568  C~2Gdr      
2015 11  10.33048  00 17 04.542  +02 27 51.91  22.8w 15RT245   568  C~2Gdr      
2015 11  10.34252  00 17 04.506  +02 27 51.69  22.5w 15RT245   568  C~2Gdr      
2015 12  07.28927  00 16 09.609  +02 21 40.81  21.8w 15RT245   568  C~2Gdr      
2016 01  01.21869  00 16 14.402  +02 21 54.37  22.8w 15RT245   568  C~2Gdr      
2016 09  05.54890  00 26 35.982  +03 30 33.47        15RT245   568  C~2Gdr      
2016 09  05.55294  00 26 35.962  +03 30 33.39        15RT245   568  C~2Gdr      
2016 09  07.48826  00 26 28.143  +03 29 44.14        15RT245   568  C~2Gdr      
2016 09  07.49232  00 26 28.142  +03 29 43.99        15RT245   568  C~2Gdr      
2016 09  07.53459  00 26 27.955  +03 29 42.98        15RT245   568  C~2Gdr      
2016 09  07.53863  00 26 27.934  +03 29 42.84        15RT245   568  C~2Gdr      
2016 09  26.56094  00 25 05.822  +03 21 01.21  23.3w 15RT245   568  C~2Gdr      
2016 09  26.57548  00 25 05.750  +03 21 00.83  23.2w 15RT245   568  C~2Gdr      
2016 11  03.22971  00 22 28.757  +03 04 05.37        15RT245   568  C~2Gdr      
2016 12  24.23886  00 21 05.243  +02 54 34.82  23.3w 15RT245   568  C~2Gdr      
2016 12  24.25172  00 21 05.254  +02 54 34.90  23.3w 15RT245   568  C~2Gdr      
2017 01  02.23941  00 21 13.839  +02 55 23.69  23.4w 15RT245   568  C~2Gdr      
2017 01  26.22433  00 22 11.532  +03 01 19.98  23.2w 15RT245   568  C~2Gdr      
2017 01  27.25017  00 22 15.043  +03 01 42.07  23.1w 15RT245   568  C~2Gdr      
2017 01  27.25763  00 22 15.074  +03 01 42.21  23.1w 15RT245   568  C~2Gdr      
2017 01  28.24596  00 22 18.538  +03 02 04.04  23.2w 15RT245   568  C~2Gdr      
2017 01  28.25342  00 22 18.554  +03 02 04.19  23.3w 15RT245   568  C~2Gdr      

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     0.05       0.00    -0.07
  2   0.0575    133.44     0.05      20.66     0.02
  3   0.0712     74.95    -0.00      25.43     0.02
  4   0.1339   -608.17    -0.07      45.64    -0.02
  5   0.1340   -610.17    -0.08      45.73     0.01
  6   0.2103  -2189.48    -0.02      64.03     0.09
  7   0.2106  -2196.57    -0.00      64.11     0.07
  8   0.2107  -2199.46     0.00      64.13     0.04
  9   0.2134  -2265.39    -0.05      64.56     0.02
 10   0.2159  -2329.25    -0.02      64.96     0.01
 11   0.2323  -2745.03     0.07      67.51     0.04
 12   0.2786  -3968.03     0.00      71.80     0.06
 13   0.2787  -3968.93    -0.01      71.75     0.00
 14   0.2788  -3972.96    -0.04      71.77    -0.01
 15   0.2894  -4253.88     0.11      72.10    -0.03
 16   0.2895  -4256.26     0.04      72.20     0.05
 17   0.2897  -4260.17     0.04      72.21     0.04
 18   0.3687  -6142.33     0.09      68.15    -0.16
 19   0.3741  -6248.64     0.02      67.58    -0.06
 20   0.3743  -6251.50    -0.00      67.62    -0.03
 21   0.3771  -6306.32    -0.01      67.44     0.13
 22   0.3773  -6309.45     0.09      67.21    -0.10
 23   0.3826  -6409.22    -0.12      66.53    -0.04
 24   0.3827  -6409.80    -0.09      66.55    -0.03
 25   0.4565  -7313.15    -0.05      52.81    -0.06
 26   0.5247  -7241.75    -0.02      36.72    -0.07
 27   1.2046   2942.70     0.00     130.49     0.00
 28   1.2046   2942.39    -0.04     130.53     0.04
 29   1.2099   2815.36    -0.05     131.53     0.07
 30   1.2099   2815.29     0.15     131.40    -0.06
 31   1.2100   2812.32     0.02     131.57     0.08
 32   1.2100   2811.97    -0.05     131.57     0.07
 33   1.2621   1476.28    -0.02     138.27    -0.09
 34   1.2622   1475.14    -0.09     138.35    -0.02
 35   1.3653  -1086.01     0.08     135.99     0.01
 36   1.5049  -2460.79    -0.09     107.60    -0.01
 37   1.5049  -2460.61     0.00     107.61    -0.00
 38   1.5296  -2323.18     0.03     101.45    -0.00
 39   1.5952  -1388.43     0.07      86.28    -0.02
 40   1.5980  -1331.39    -0.01      85.74     0.01
 41   1.5980  -1330.90     0.05      85.69    -0.04
 42   1.6008  -1274.61     0.04      85.19     0.00
 43   1.6008  -1274.33    -0.10      85.23     0.05

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.

15RT245    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.672    44.710    44.636
ecceobj         0.088     0.092     0.085
incobj          0.959     0.959     0.959
qmin           40.029    39.846    40.144
qmax           49.104    49.320    48.916
amean          44.441    44.479    44.405
amin           44.090    44.122    44.036
amax           44.811    44.857    44.785
emean           0.081     0.085     0.078
emin            0.066     0.069     0.062
emax            0.096     0.100     0.093
imean           2.451     2.442     2.450
imin            1.769     1.765     1.769
imax            3.002     2.997     2.997
excite_mean     0.092     0.095     0.089
fracstop        1.000     1.000     1.000
cjmean          3.096     3.096     3.097

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       181.3     181.3     181.2
kozaiamp        180.0     180.0     179.9