Orbit Fit and Astrometric record for 15RG279

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: 15RG279   
# Created Sat Apr 20 01:10:10 2019
# Orbit generated from Bernstein formalism
# Fitting   37 observations of   37
# Arc:   2.50y
# First observation: 2015/06/23
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000107   0.015938   0.000025   0.003919   0.019377   0.000000
# Chi-squared of fit:     3.45 DOF:   68 RMS:  0.05
# Min/Max residuals:    -0.15    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.283683E-05  1.577417E-02  3.254022E-06  3.924500E-03  1.926986E-02  7.596723E-03
# Covariance matrix:
  2.0206E-13  2.8757E-14 -9.7503E-15  3.1174E-14  1.7825E-13  3.5830E-12
  2.8757E-14  2.2961E-13 -2.2729E-14  7.4032E-14  2.3583E-13  8.4428E-12
 -9.7503E-15 -2.2729E-14  1.0773E-13 -7.9024E-14 -2.9918E-14 -1.3393E-12
  3.1174E-14  7.4032E-14 -7.9024E-14  1.0792E-13  9.6914E-14  4.3837E-12
  1.7825E-13  2.3583E-13 -2.9918E-14  9.6914E-14  3.8089E-13  1.1078E-11
  3.5830E-12  8.4428E-12 -1.3393E-12  4.3837E-12  1.1078E-11  4.9891E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.066887   10.776407    1.003924   -0.000087    0.158286  2457197.114678
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           48.94913 +/-     0.117
Argument of Peri:      262.71346 +/-     0.027
Long of Asc Node:        9.39360 +/-     0.000
Inclination:            13.88618 +/-     0.001
Eccentricity:         0.42312442 +/-    0.0013
Semi-Major Axis:     59.51463187 +/-    0.0776
Time of Perihelion: 2434388.3096 +/-      31.6
Perihelion:          34.33253776 +/-    0.0875
Aphelion:            84.69672598 +/-    0.1336
Period (y)              459.1386 +/-      0.90
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           51.00796609 +/-    0.0016
Ecliptic Y            8.68775097 +/-    0.0003
Ecliptic Z            0.06080396 +/-    0.0000
Ecliptic XDOT         0.00063815 +/-    0.0000
Ecliptic YDOT         0.00239711 +/-    0.0000
Ecliptic ZDOT         0.00055892 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   51.74256776 +/-    0.0016
Geocenter to KBO     51.89451591 +/-    0.0017
# Hcoef:  6.82

The following table shows the complete astrometric record for 15RG279. 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 (15RG279) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.61390  00 39 31.021  +04 19 36.68  24.3r 15RG279   568  C~2lVT      
2015 07  14.57141  00 39 40.055  +04 21 26.88  23.8r 15RG279   568  C~2lVT      
2015 08  11.50339  00 39 05.646  +04 18 58.62  23.8r 15RG279   568  C~2lVT      
2015 08  11.54506  00 39 05.557  +04 18 57.97  23.8r 15RG279   568  C~2lVT      
2015 09  08.40906  00 37 47.372  +04 11 50.07  23.9r 15RG279   568  C~2lVT      
2015 09  08.51318  00 37 47.016  +04 11 48.07  23.8r 15RG279   568  C~2lVT      
2015 09  08.55681  00 37 46.863  +04 11 47.29  23.7r 15RG279   568  C~2lVT      
2015 09  09.53240  00 37 43.554  +04 11 28.57  23.9w 15RG279   568  C~2lVT      
2015 09  10.47324  00 37 40.329  +04 11 10.34  24.1w 15RG279   568  C~2lVT      
2015 09  16.46364  00 37 19.234  +04 09 10.55  24.0w 15RG279   568  C~2lVT      
2015 10  03.39174  00 36 16.251  +04 03 10.29  23.8w 15RG279   568  C~2lVT      
2015 10  07.35863  00 36 01.257  +04 01 44.15  23.7r 15RG279   568  C~2lVT      
2015 10  07.41176  00 36 01.048  +04 01 43.05  24.2r 15RG279   568  C~2lVT      
2015 11  07.25497  00 34 13.627  +03 51 29.26  24.1w 15RG279   568  C~2lVT      
2015 11  07.30780  00 34 13.464  +03 51 28.37  24.1w 15RG279   568  C~2lVT      
2015 12  07.33142  00 33 08.054  +03 45 37.53  24.1w 15RG279   568  C~2lVT      
2016 01  01.26036  00 32 59.502  +03 45 37.10  24.1w 15RG279   568  C~2lVT      
2016 09  05.53675  00 40 55.662  +04 46 32.76  24.0w 15RG279   568  C~2lVT      
2016 09  07.47613  00 40 49.264  +04 45 57.15  24.1w 15RG279   568  C~2lVT      
2016 09  07.52244  00 40 49.108  +04 45 56.32  24.1w 15RG279   568  C~2lVT      
2016 09  26.57954  00 39 41.082  +04 39 31.81  24.2w 15RG279   568  C~2lVT      
2016 09  27.48878  00 39 37.695  +04 39 12.45  23.9w 15RG279   568  C~2lVT      
2016 11  03.42043  00 37 25.161  +04 26 32.94  23.9w 15RG279   568  C~2lVT      
2016 11  03.48549  00 37 24.943  +04 26 31.69  24.1w 15RG279   568  C~2lVT      
2016 11  03.49709  00 37 24.910  +04 26 31.50  24.1w 15RG279   568  C~2lVT      
2016 11  04.26545  00 37 22.533  +04 26 17.78  24.1w 15RG279   568  C~2lVT      
2016 11  04.28299  00 37 22.482  +04 26 17.51  24.1w 15RG279   568  C~2lVT      
2016 11  04.32471  00 37 22.342  +04 26 16.76  24.0w 15RG279   568  C~2lVT      
2016 11  04.34222  00 37 22.290  +04 26 16.48  24.0w 15RG279   568  C~2lVT      
2016 12  29.26158  00 35 57.945  +04 19 05.22  24.0w 15RG279   568  C~2lVT      
2017 01  03.23211  00 36 00.567  +04 19 31.09  23.8w 15RG279   568  C~2lVT      
2017 01  27.23800  00 36 38.125  +04 24 15.01        15RG279   568  C~2lVT      
2017 09  16.50467  00 43 18.125  +05 16 40.36        15RG279   568  C~2lVT      
2017 09  17.40380  00 43 14.942  +05 16 22.53        15RG279   568  C~2lVT      
2017 09  22.45810  00 42 56.707  +05 14 39.86  24.0w 15RG279   568  C~2lVT      
2017 11  22.37200  00 39 33.782  +04 55 20.18  24.1w 15RG279   568  C~2lVT      
2017 12  23.29716  00 38 54.954  +04 52 03.24  24.2w 15RG279   568  C~2lVT      

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     0.02       0.00    -0.01
  2   0.0574    167.50     0.03      48.44     0.02
  3   0.1339   -364.09     0.07     113.74     0.10
  4   0.1340   -365.57     0.02     113.67    -0.09
  5   0.2103  -1609.26    -0.08     178.75     0.03
  6   0.2105  -1614.95    -0.05     179.00    -0.00
  7   0.2107  -1617.36    -0.06     179.18     0.06
  8   0.2133  -1670.24     0.02     181.39     0.02
  9   0.2159  -1721.77    -0.01     183.55     0.02
 10   0.2323  -2059.08     0.17     197.24    -0.13
 11   0.2787  -3067.34    -0.01     235.96    -0.02
 12   0.2895  -3307.55     0.01     244.89    -0.03
 13   0.2897  -3310.86    -0.03     245.11     0.05
 14   0.3741  -5030.94     0.01     312.77    -0.03
 15   0.3742  -5033.53    -0.01     312.91    -0.02
 16   0.4564  -6072.35    -0.00     375.70     0.03
 17   0.5247  -6190.29     0.01     425.72     0.04
 18   1.2044   1797.51    -0.02     991.32    -0.02
 19   1.2098   1695.56    -0.03     995.99     0.01
 20   1.2099   1693.09    -0.00     996.14     0.03
 21   1.2621    606.74    -0.04    1040.61    -0.06
 22   1.2645    552.57     0.07    1042.64    -0.07
 23   1.3657  -1568.35     0.02    1121.21     0.07
 24   1.3658  -1571.84    -0.15    1121.34     0.06
 25   1.3659  -1572.37    -0.09    1121.36     0.05
 26   1.3680  -1610.45    -0.00    1122.69    -0.05
 27   1.3680  -1611.26     0.08    1122.74    -0.04
 28   1.3681  -1613.48    -0.03    1122.88    -0.01
 29   1.3682  -1614.30     0.03    1122.92    -0.00
 30   1.5185  -2943.99    -0.00    1221.81    -0.03
 31   1.5322  -2897.75     0.02    1230.19     0.00
 32   1.5979  -2269.53    -0.08    1270.58    -0.04
 33   2.2338   4464.32    -0.03    1822.90     0.01
 34   2.2362   4413.56    -0.02    1825.05     0.05
 35   2.2501   4122.59    -0.01    1836.93     0.02
 36   2.4169    877.99     0.05    1955.96    -0.03
 37   2.5015    266.90     0.15    2002.23    -0.00

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.

15RG279    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        60.236    60.459    60.016
ecceobj         0.425     0.428     0.422
incobj         13.812    13.812    13.812
qmin           33.926    33.692    33.901
qmax           88.023    87.959    87.419
amean          60.025    60.084    59.582
amin           59.027    58.992    58.256
amax           61.378    61.302    61.033
emean           0.414     0.421     0.413
emin            0.393     0.402     0.395
emax            0.435     0.437     0.432
imean          15.160    14.566    14.673
imin           14.108    13.500    13.534
imax           16.144    15.642    15.767
excite_mean     0.490     0.490     0.484
fracstop        1.000     1.000     1.000
cjmean          2.982     2.981     2.984

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       178.2     178.6     177.8
kozaiamp        180.0     180.0     180.0