Orbit Fit and Astrometric record for 13RG98

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: 13RG98    
# Created Sat Oct 21 01:38:17 2017
# Orbit generated from Bernstein formalism
# Fitting  101 observations of  101
# Arc:   2.28y
# First observation: 2013/09/03
#  Last observation: 2015/12/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000001   0.059185   0.000057  -0.012096   0.045849   0.000000
# Chi-squared of fit:    47.38 DOF:  196 RMS:  0.12
# Min/Max residuals:    -0.41    0.40
# Exact a, adot, b, bdot, g, gdot:
  2.237709E-05  5.753652E-02 -4.164364E-06 -1.178343E-02  4.460298E-02 -7.589373E-03
# Covariance matrix:
  4.9078E-14 -6.2351E-14 -1.6313E-15  7.0162E-15 -1.9341E-14 -3.4720E-13
 -6.2351E-14  8.3049E-13  4.8432E-14 -1.6313E-13  6.0835E-13  8.0093E-12
 -1.6313E-15  4.8432E-14  5.0625E-14 -4.5140E-14  3.7206E-14  4.8544E-13
  7.0162E-15 -1.6313E-13 -4.5140E-14  7.4977E-14 -1.2080E-13 -1.8663E-12
 -1.9341E-14  6.0835E-13  3.7206E-14 -1.2080E-13  4.7076E-13  5.9228E-12
 -3.4720E-13  8.0093E-12  4.8544E-13 -1.8663E-12  5.9228E-12  9.2044E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -45.361353   39.757910    0.866824   -0.368526   -0.364029  2456538.780558
# Heliocentric elements and errors
Epoch:              2456530.5000  =  2013/08/26
Mean Anomaly:          286.58896 +/-     0.016
Argument of Peri:      349.25597 +/-     0.005
Long of Asc Node:      145.92555 +/-     0.000
Inclination:            46.03263 +/-     0.000
Eccentricity:         0.17025168 +/-    0.0002
Semi-Major Axis:     23.28607937 +/-    0.0017
Time of Perihelion: 2464900.0457 +/-       1.5
Perihelion:          19.32158515 +/-    0.0041
Aphelion:            27.25057359 +/-    0.0043
Period (y)              112.3706 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.06218610 +/-    0.0002
Ecliptic Y            9.74252461 +/-    0.0002
Ecliptic Z          -15.95309849 +/-    0.0002
Ecliptic XDOT        -0.00291218 +/-    0.0000
Ecliptic YDOT         0.00217545 +/-    0.0000
Ecliptic ZDOT        -0.00017659 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   22.80436018 +/-    0.0002
Geocenter to KBO     22.42002871 +/-    0.0003
# Hcoef:  9.50

The following table shows the complete astrometric record for 13RG98. 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 (13RG98) followed by the observatory code and reference code for the source of the astrometry.

2013 09  03.279780 03 28 38.09   -28 18 00.2   22.9z 13RG98    W84  C~1Iuu      
2013 09  03.288090 03 28 38.14   -28 18 00.9   22.3z 13RG98    W84  C~1Iuu      
2013 09  03.292234 03 28 38.11   -28 18 01.5   22.5z 13RG98    W84  C~1Iuu      
2013 09  03.296400 03 28 38.10   -28 18 02.2   22.5z 13RG98    W84  C~1Iuu      
2013 09  03.300567 03 28 38.10   -28 18 02.5   22.4z 13RG98    W84  C~1Iuu      
2013 09  03.304711 03 28 38.09   -28 18 03.1   22.6z 13RG98    W84  C~1Iuu      
2013 09  03.308854 03 28 38.09   -28 18 03.3   21.9z 13RG98    W84  C~1Iuu      
2013 09  03.313021 03 28 38.09   -28 18 03.9   22.4z 13RG98    W84  C~1Iuu      
2013 09  03.317188 03 28 38.08   -28 18 04.3   22.1z 13RG98    W84  C~1Iuu      
2013 09  03.321354 03 28 38.08   -28 18 04.8   22.4z 13RG98    W84  C~1Iuu      
2013 09  03.341863 03 28 38.08   -28 18 07.1   22.6i 13RG98    W84  C~1Iuu      
2013 09  03.346377 03 28 38.05   -28 18 07.7   22.5i 13RG98    W84  C~1Iuu      
2013 09  03.350880 03 28 38.05   -28 18 08.1   22.6i 13RG98    W84  C~1Iuu      
2013 09  03.355394 03 28 38.04   -28 18 08.6   22.7i 13RG98    W84  C~1Iuu      
2013 09  03.359907 03 28 38.04   -28 18 09.2   22.5i 13RG98    W84  C~1Iuu      
2013 09  03.400394 03 28 37.99   -28 18 13.8   22.8r 13RG98    W84  C~1Iuu      
2013 09  03.405486 03 28 37.99   -28 18 14.3   22.6r 13RG98    W84  C~1Iuu      
2013 09  03.410567 03 28 37.99   -28 18 14.9   22.6r 13RG98    W84  C~1Iuu      
2013 09  10.228530 03 28 27.35   -28 31 00.6   22.4i 13RG98    W84  C~1Iuu      
2013 09  10.233044 03 28 27.34   -28 31 01.1   22.4i 13RG98    W84  C~1Iuu      
2013 09  10.237558 03 28 27.33   -28 31 01.7   22.8i 13RG98    W84  C~1Iuu      
2013 09  10.242037 03 28 27.31   -28 31 02.2   22.5i 13RG98    W84  C~1Iuu      
2013 09  10.246528 03 28 27.31   -28 31 02.7   22.5i 13RG98    W84  C~1Iuu      
2013 09  10.252442 03 28 27.29   -28 31 03.4   22.8r 13RG98    W84  C~1Iuu      
2013 09  10.257431 03 28 27.28   -28 31 03.9   22.7r 13RG98    W84  C~1Iuu      
2013 09  10.262384 03 28 27.27   -28 31 04.5   22.9r 13RG98    W84  C~1Iuu      
2013 09  17.361817 03 28 06.96   -28 44 08.0   22.3i 13RG98    W84  C~1Iuu      
2013 09  17.366354 03 28 06.93   -28 44 08.6   22.7i 13RG98    W84  C~1Iuu      
2013 09  17.370868 03 28 06.91   -28 44 08.8   23.2i 13RG98    W84  C~1Iuu      
2014 10  13.179080 03 41 18.13   -28 53 15.0   23.9g 13RG98    W84  C~1Iuu      
2014 10  13.181285 03 41 18.11   -28 53 15.3   22.9r 13RG98    W84  C~1Iuu      
2014 10  13.183623 03 41 18.09   -28 53 15.5   22.3i 13RG98    W84  C~1Iuu      
2014 10  13.187431 03 41 18.06   -28 53 15.8   22.6z 13RG98    W84  C~1Iuu      
2014 10  19.337807 03 40 32.38   -29 01 42.1   23.1g 13RG98    W84  C~1Iuu      
2014 10  19.340023 03 40 32.37   -29 01 42.3   22.6r 13RG98    W84  C~1Iuu      
2014 10  19.342373 03 40 32.35   -29 01 42.5   22.4i 13RG98    W84  C~1Iuu      
2014 10  19.346169 03 40 32.33   -29 01 42.8   22.4z 13RG98    W84  C~1Iuu      
2014 10  26.352483 03 39 34.94   -29 10 06.7   23.6g 13RG98    W84  C~1Iuu      
2014 10  26.354699 03 39 34.92   -29 10 06.9   22.7r 13RG98    W84  C~1Iuu      
2014 10  26.357060 03 39 34.91   -29 10 07.0   22.9i 13RG98    W84  C~1Iuu      
2014 10  26.360845 03 39 34.86   -29 10 07.2   22.2z 13RG98    W84  C~1Iuu      
2014 11  02.242830 03 38 34.14   -29 16 57.7   23.1g 13RG98    W84  C~1Iuu      
2014 11  02.245035 03 38 34.13   -29 16 57.8   22.9r 13RG98    W84  C~1Iuu      
2014 11  02.250023 03 38 34.08   -29 16 58.2   22.4z 13RG98    W84  C~1Iuu      
2014 11  12.169369 03 37 01.39   -29 24 06.2   23.2g 13RG98    W84  C~1Iuu      
2014 11  12.171562 03 37 01.38   -29 24 06.3   22.6r 13RG98    W84  C~1Iuu      
2014 11  12.173900 03 37 01.34   -29 24 06.3   22.3i 13RG98    W84  C~1Iuu      
2014 11  12.177697 03 37 01.31   -29 24 06.5   22.4z 13RG98    W84  C~1Iuu      
2014 11  19.304207 03 35 52.81   -29 27 06.9   22.9g 13RG98    W84  C~1Iuu      
2014 11  19.306412 03 35 52.78   -29 27 06.9   22.8r 13RG98    W84  C~1Iuu      
2014 11  19.308750 03 35 52.76   -29 27 07.0   22.5i 13RG98    W84  C~1Iuu      
2014 11  19.312546 03 35 52.72   -29 27 07.2   22.1z 13RG98    W84  C~1Iuu      
2014 11  26.304184 03 34 45.66   -29 28 14.9   23.2g 13RG98    W84  C~1Iuu      
2014 11  26.306400 03 34 45.64   -29 28 15.0   22.7r 13RG98    W84  C~1Iuu      
2014 11  26.308750 03 34 45.62   -29 28 14.9   22.5i 13RG98    W84  C~1Iuu      
2014 11  26.312546 03 34 45.57   -29 28 15.0   22.2z 13RG98    W84  C~1Iuu      
2014 12  01.123524 03 34 00.26   -29 27 58.2   23.4g 13RG98    W84  C~1Iuu      
2014 12  01.125729 03 34 00.25   -29 27 58.3   22.8r 13RG98    W84  C~1Iuu      
2014 12  01.128079 03 34 00.24   -29 27 58.4   22.7i 13RG98    W84  C~1Iuu      
2014 12  01.131875 03 34 00.19   -29 27 58.2   22.5z 13RG98    W84  C~1Iuu      
2015 01  03.142384 03 29 43.77   -29 03 46.3   22.8r 13RG98    W84  C~1Iuu      
2015 01  03.147361 03 29 43.75   -29 03 46.0   22.8r 13RG98    W84  C~1Iuu      
2015 01  03.152315 03 29 43.71   -29 03 45.7   22.9r 13RG98    W84  C~1Iuu      
2015 01  03.158333 03 29 43.66   -29 03 45.2   22.5i 13RG98    W84  C~1Iuu      
2015 01  03.162801 03 29 43.65   -29 03 44.7   22.5i 13RG98    W84  C~1Iuu      
2015 01  03.171794 03 29 43.60   -29 03 44.2   22.5i 13RG98    W84  C~1Iuu      
2015 01  03.176296 03 29 43.57   -29 03 43.8   22.4i 13RG98    W84  C~1Iuu      
2015 01  04.045868 03 29 38.78   -29 02 36.7   22.2z 13RG98    W84  C~1Iuu      
2015 01  04.050012 03 29 38.75   -29 02 36.3   22.6z 13RG98    W84  C~1Iuu      
2015 01  04.054120 03 29 38.72   -29 02 36.0   22.4z 13RG98    W84  C~1Iuu      
2015 01  04.058287 03 29 38.70   -29 02 35.8   22.4z 13RG98    W84  C~1Iuu      
2015 01  04.062431 03 29 38.69   -29 02 35.4   22.6z 13RG98    W84  C~1Iuu      
2015 01  04.066574 03 29 38.66   -29 02 35.1   22.3z 13RG98    W84  C~1Iuu      
2015 01  04.070729 03 29 38.64   -29 02 34.8   22.3z 13RG98    W84  C~1Iuu      
2015 01  04.074873 03 29 38.61   -29 02 34.4   22.3z 13RG98    W84  C~1Iuu      
2015 01  04.079016 03 29 38.59   -29 02 34.2   22.5z 13RG98    W84  C~1Iuu      
2015 01  04.083160 03 29 38.56   -29 02 33.8   22.3z 13RG98    W84  C~1Iuu      
2015 01  04.087303 03 29 38.53   -29 02 33.4   22.3z 13RG98    W84  C~1Iuu      
2015 01  17.074815 03 28 42.24   -28 43 30.2   22.7r 13RG98    W84  C~1Iuu      
2015 01  17.079769 03 28 42.22   -28 43 29.6   22.8r 13RG98    W84  C~1Iuu      
2015 01  17.084722 03 28 42.20   -28 43 29.2   22.8r 13RG98    W84  C~1Iuu      
2015 01  18.129653 03 28 39.01   -28 41 46.6   22.5z 13RG98    W84  C~1Iuu      
2015 01  18.133796 03 28 38.99   -28 41 46.2   22.4z 13RG98    W84  C~1Iuu      
2015 01  18.137940 03 28 38.98   -28 41 45.8   22.2z 13RG98    W84  C~1Iuu      
2015 01  18.142072 03 28 38.97   -28 41 45.4   22.3z 13RG98    W84  C~1Iuu      
2015 01  18.146215 03 28 38.95   -28 41 45.0   22.1z 13RG98    W84  C~1Iuu      
2015 01  18.150359 03 28 38.94   -28 41 44.5   22.2z 13RG98    W84  C~1Iuu      
2015 01  18.154491 03 28 38.93   -28 41 44.1   22.3z 13RG98    W84  C~1Iuu      
2015 01  18.158634 03 28 38.92   -28 41 43.8   22.4z 13RG98    W84  C~1Iuu      
2015 01  18.162778 03 28 38.90   -28 41 43.4   22.3z 13RG98    W84  C~1Iuu      
2015 01  18.166921 03 28 38.89   -28 41 42.9   22.1z 13RG98    W84  C~1Iuu      
2015 01  18.171065 03 28 38.88   -28 41 42.5   22.5z 13RG98    W84  C~1Iuu      
2015 01  19.069479 03 28 36.32   -28 40 13.2   23.4g 13RG98    W84  C~1Iuu      
2015 01  19.072106 03 28 36.31   -28 40 13.0   23.3g 13RG98    W84  C~1Iuu      
2015 01  19.074745 03 28 36.31   -28 40 12.7   23.2g 13RG98    W84  C~1Iuu      
2015 01  22.123738 03 28 28.73   -28 35 02.2   22.8r 13RG98    W84  C~1Iuu      
2015 01  22.152083 03 28 28.66   -28 34 59.2   22.5i 13RG98    W84  C~1Iuu      
2015 01  22.165532 03 28 28.63   -28 34 57.9   22.6i 13RG98    W84  C~1Iuu      
2015 12  16.253727 03 47 29.25   -28 46 38.1   22.5r 13RG98    W84  C~1h5k      
2015 12  16.255093 03 47 29.24   -28 46 38.0   22.0i 13RG98    W84  C~1h5k      
2015 12  16.256458 03 47 29.22   -28 46 37.9   23.4g 13RG98    W84  C~1h5k      

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    -0.41       0.00    -0.00
  2   0.0000      0.38     0.40      -0.89    -0.04
  3   0.0000     -0.20     0.04      -1.31    -0.05
  4   0.0000     -0.57    -0.11      -1.92    -0.24
  5   0.0001     -0.67    -0.00      -2.20    -0.09
  6   0.0001     -1.01    -0.12      -2.72    -0.19
  7   0.0001     -1.08     0.03      -2.91     0.04
  8   0.0001     -1.29     0.04      -3.47    -0.10
  9   0.0001     -1.55    -0.01      -3.80    -0.01
 10   0.0001     -1.72     0.04      -4.27    -0.05
 11   0.0002     -2.52     0.31      -6.42    -0.13
 12   0.0002     -3.10    -0.03      -6.85    -0.10
 13   0.0002     -3.24     0.06      -7.22    -0.02
 14   0.0002     -3.54     0.00      -7.65     0.01
 15   0.0002     -3.74     0.03      -8.21    -0.10
 16   0.0003     -5.96    -0.06     -12.29    -0.10
 17   0.0003     -6.14     0.03     -12.76    -0.05
 18   0.0004     -6.34     0.09     -13.33    -0.10
 19   0.0190   -403.79     0.02    -682.69     0.13
 20   0.0190   -404.09     0.02    -683.11     0.13
 21   0.0190   -404.42    -0.00    -683.63     0.05
 22   0.0191   -404.84    -0.12    -684.01     0.09
 23   0.0191   -405.01     0.01    -684.47     0.05
 24   0.0191   -405.50    -0.08    -685.04     0.05
 25   0.0191   -405.80    -0.04    -685.46     0.10
 26   0.0191   -406.13    -0.04    -685.98     0.05
 27   0.0386   -928.56    -0.00   -1328.24     0.11
 28   0.0386   -929.14    -0.21   -1328.67     0.07
 29   0.0386   -929.45    -0.15   -1328.76     0.36
 30   1.1086   8586.59    -0.02   -5577.62    -0.10
 31   1.1086   8586.23    -0.12   -5577.80    -0.18
 32   1.1086   8585.92    -0.15   -5577.89    -0.16
 33   1.1086   8585.44    -0.17   -5578.02    -0.12
 34   1.1254   7839.45     0.12   -5825.52     0.03
 35   1.1254   7839.26     0.20   -5825.65    -0.03
 36   1.1254   7838.94     0.18   -5825.74    -0.04
 37   1.1254   7838.58     0.30   -5825.92    -0.10
 38   1.1446   6951.99     0.09   -6015.90     0.28
 39   1.1446   6951.67     0.06   -6015.99     0.23
 40   1.1446   6951.51     0.20   -6016.03     0.23
 41   1.1446   6950.83     0.01   -6015.98     0.35
 42   1.1635   6059.48    -0.01   -6105.09     0.07
 43   1.1635   6059.32     0.12   -6105.13     0.04
 44   1.1635   6058.56     0.03   -6105.26    -0.07
 45   1.1907   4772.53    -0.02   -6060.38     0.16
 46   1.1907   4772.37     0.11   -6060.43     0.08
 47   1.1907   4771.89    -0.08   -6060.24     0.23
 48   1.1907   4771.45    -0.02   -6060.28     0.13
 49   1.2102   3871.20     0.01   -5903.37    -0.04
 50   1.2102   3870.83    -0.08   -5903.23     0.04
 51   1.2102   3870.55    -0.07   -5903.23    -0.03
 52   1.2102   3869.99    -0.16   -5903.22    -0.14
 53   1.2294   3028.02     0.28   -5650.22     0.12
 54   1.2294   3027.74     0.26   -5650.22     0.02
 55   1.2294   3027.53     0.33   -5650.03     0.10
 56   1.2294   3026.89     0.13   -5649.89     0.08
 57   1.2426   2480.22    -0.12   -5421.71     0.30
 58   1.2426   2480.06    -0.03   -5421.76     0.14
 59   1.2426   2479.91     0.07   -5421.81    -0.03
 60   1.2426   2479.37    -0.04   -5421.39     0.19
 61   1.3330   -146.51     0.11   -2875.36    -0.10
 62   1.3330   -146.65     0.18   -2874.99    -0.22
 63   1.3330   -147.04     0.01   -2874.52    -0.24
 64   1.3330   -147.48    -0.16   -2873.83    -0.14
 65   1.3330   -147.43     0.08   -2873.31    -0.06
 66   1.3330   -147.87     0.04   -2872.61    -0.25
 67   1.3331   -148.09     0.00   -2872.10    -0.18
 68   1.3354   -183.51     0.09   -2787.27    -0.07
 69   1.3354   -183.74     0.03   -2786.76     0.04
 70   1.3355   -184.00    -0.06   -2786.34     0.05
 71   1.3355   -184.17    -0.06   -2786.06    -0.08
 72   1.3355   -184.16     0.13   -2785.64    -0.07
 73   1.3355   -184.42     0.04   -2785.22    -0.06
 74   1.3355   -184.56     0.07   -2784.85    -0.10
 75   1.3355   -184.79     0.02   -2784.34     0.00
 76   1.3355   -184.97     0.02   -2784.06    -0.13
 77   1.3355   -185.20    -0.04   -2783.54    -0.02
 78   1.3355   -185.43    -0.10   -2783.03     0.08
 79   1.3711   -480.19    -0.10   -1453.75    -0.09
 80   1.3711   -480.23    -0.11   -1453.10     0.04
 81   1.3711   -480.34    -0.18   -1452.63    -0.02
 82   1.3740   -484.05    -0.02   -1341.84    -0.01
 83   1.3740   -484.16    -0.11   -1341.37     0.01
 84   1.3740   -484.14    -0.08   -1340.95    -0.02
 85   1.3740   -484.13    -0.05   -1340.53    -0.04
 86   1.3740   -484.23    -0.15   -1340.06    -0.02
 87   1.3740   -484.18    -0.08   -1339.55     0.05
 88   1.3741   -484.17    -0.05   -1339.13     0.03
 89   1.3741   -484.19    -0.06   -1338.80    -0.09
 90   1.3741   -484.30    -0.16   -1338.33    -0.07
 91   1.3741   -484.25    -0.09   -1337.82     0.00
 92   1.3741   -484.23    -0.07   -1337.40    -0.02
 93   1.3766   -484.81    -0.03   -1241.95     0.03
 94   1.3766   -484.86    -0.08   -1241.72    -0.01
 95   1.3766   -484.76     0.03   -1241.44    -0.02
 96   1.3849   -470.57     0.02    -915.59     0.04
 97   1.3850   -470.39    -0.03    -912.46     0.10
 98   1.3850   -470.31    -0.06    -911.10    -0.00
 99   2.2833  13268.24    -0.03   -7060.64    -0.05
100   2.2833  13268.15     0.01   -7060.50    -0.02
101   2.2833  13267.95    -0.07   -7060.30     0.07

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.

13RG98    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        23.322    23.323    23.321
ecceobj         0.167     0.167     0.167
incobj         45.986    45.986    45.986
qmin           18.741    19.154    18.920
qmax           27.642    27.642    27.900
amean          23.167    23.266    23.279
amin           22.748    23.032    23.060
amax           23.500    23.508    23.495
emean           0.168     0.169     0.173
emin            0.155     0.161     0.159
emax            0.179     0.178     0.189
imean          44.724    44.745    44.596
imin           44.481    44.556    44.286
imax           44.909    44.885    44.885
excite_mean     0.723     0.724     0.723
fracstop        0.013     0.004     0.020
cjmean          2.537     2.535     2.534

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       131.3     329.9      91.3
kozaiamp        179.9     179.8     179.8