Orbit Fit and Astrometric record for 15RS278

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: 15RS278   
# Created Wed Feb 20 02:10:35 2019
# Orbit generated from Bernstein formalism
# Fitting   28 observations of   28
# Arc:   1.47y
# First observation: 2015/07/14
#  Last observation: 2017/01/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000056   0.040206  -0.000006  -0.009765   0.031605   0.000000
# Chi-squared of fit:     3.64 DOF:   50 RMS:  0.06
# Min/Max residuals:    -0.17    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.994817E-05  3.933026E-02 -4.875575E-06 -9.594323E-03  3.106668E-02 -3.157616E-03
# Covariance matrix:
  2.1965E-13  2.3204E-13  1.6895E-14 -1.4004E-13  3.0375E-13  1.0368E-11
  2.3204E-13  1.4798E-12  8.2408E-14 -6.3387E-13  1.0204E-12  4.6766E-11
  1.6895E-14  8.2408E-14  1.0581E-13 -1.4261E-13  6.0433E-14  3.2229E-12
 -1.4004E-13 -6.3387E-13 -1.4261E-13  5.2725E-13 -4.7673E-13 -2.4289E-11
  3.0375E-13  1.0204E-12  6.0433E-14 -4.7673E-13  8.5970E-13  3.5215E-11
  1.0368E-11  4.6766E-11  3.2229E-12 -2.4289E-11  3.5215E-11  1.7902E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.751636   12.065767    1.002967    0.005352   -0.171695  2457218.063999
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:          351.58207 +/-     0.071
Argument of Peri:      194.34819 +/-     0.192
Long of Asc Node:      197.38986 +/-     0.000
Inclination:            13.82259 +/-     0.001
Eccentricity:         0.40924835 +/-    0.0005
Semi-Major Axis:     53.67573531 +/-    0.0250
Time of Perihelion: 2460569.1778 +/-      28.2
Perihelion:          31.70902935 +/-    0.0298
Aphelion:            75.64244127 +/-    0.0437
Period (y)              393.2559 +/-      0.27
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.83706227 +/-    0.0009
Ecliptic Y            5.78086893 +/-    0.0002
Ecliptic Z            0.98381252 +/-    0.0000
Ecliptic XDOT        -0.00097355 +/-    0.0000
Ecliptic YDOT         0.00333051 +/-    0.0000
Ecliptic ZDOT        -0.00085358 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.37259438 +/-    0.0009
Geocenter to KBO     32.18883032 +/-    0.0010
# Hcoef:  8.76

The following table shows the complete astrometric record for 15RS278. 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 (15RS278) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.56321  00 41 37.917  +06 22 54.83  23.9r 15RS278   568  C~2lVR      
2015 07  19.54121  00 41 38.043  +06 22 43.81  24.0r 15RS278   568  C~2lVR      
2015 08  13.49630  00 40 58.858  +06 17 27.02  23.9r 15RS278   568  C~2lVR      
2015 08  19.55891  00 40 40.101  +06 15 08.19  23.9r 15RS278   568  C~2lVR      
2015 08  19.62908  00 40 39.864  +06 15 06.77  24.2r 15RS278   568  C~2lVR      
2015 08  20.43431  00 40 37.152  +06 14 46.54  23.7r 15RS278   568  C~2lVR      
2015 08  20.48358  00 40 36.978  +06 14 45.21  23.7r 15RS278   568  C~2lVR      
2015 09  07.58083  00 39 22.689  +06 05 42.41  24.1w 15RS278   568  C~2lVR      
2015 09  09.40852  00 39 14.042  +06 04 39.30  23.7r 15RS278   568  C~2lVR      
2015 09  09.44963  00 39 13.845  +06 04 37.87  23.9r 15RS278   568  C~2lVR      
2015 09  09.49055  00 39 13.644  +06 04 36.45  24.0r 15RS278   568  C~2lVR      
2015 09  10.51481  00 39 08.711  +06 04 00.33  23.9w 15RS278   568  C~2lVR      
2015 10  03.39699  00 37 09.137  +05 49 17.86  23.6w 15RS278   568  C~2lVR      
2015 10  07.36274  00 36 47.636  +05 46 36.42  23.2r 15RS278   568  C~2lVR      
2015 10  07.41585  00 36 47.345  +05 46 34.27  23.7r 15RS278   568  C~2lVR      
2015 11  07.26021  00 34 14.911  +05 26 39.81  23.9w 15RS278   568  C~2lVR      
2015 11  07.31308  00 34 14.682  +05 26 38.04  23.4w 15RS278   568  C~2lVR      
2015 11  10.39917  00 34 02.254  +05 24 53.75  23.9w 15RS278   568  C~2lVR      
2015 12  07.33665  00 32 50.190  +05 13 21.14  24.1w 15RS278   568  C~2lVR      
2016 01  01.26556  00 32 54.075  +05 10 00.88  23.8w 15RS278   568  C~2lVR      
2016 09  05.59118  00 48 54.863  +06 29 16.83        15RS278   568  C~2lVR      
2016 09  06.54027  00 48 50.564  +06 28 45.21        15RS278   568  C~2lVR      
2016 09  06.58238  00 48 50.364  +06 28 43.75        15RS278   568  C~2lVR      
2016 09  27.49689  00 47 04.836  +06 15 47.36  23.8w 15RS278   568  C~2lVR      
2016 11  04.30057  00 43 48.345  +05 50 58.64        15RS278   568  C~2lVR      
2016 11  04.35961  00 43 48.065  +05 50 56.52        15RS278   568  C~2lVR      
2016 12  29.28720  00 42 00.386  +05 32 27.92  24.1w 15RS278   568  C~2lVR      
2017 01  02.32226  00 42 05.721  +05 32 29.82  23.9w 15RS278   568  C~2lVR      

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     0.01       0.00    -0.00
  2   0.0136     -2.58     0.14     -10.88    -0.03
  3   0.0820   -664.17     0.07     -73.63    -0.12
  4   0.0986   -975.88    -0.17     -91.79    -0.11
  5   0.0987   -979.69     0.04     -91.71     0.15
  6   0.1009  -1024.82     0.03     -94.48     0.04
  7   0.1011  -1027.73    -0.02     -94.69    -0.04
  8   0.1506  -2259.81    -0.13    -159.59    -0.02
  9   0.1556  -2403.22    -0.09    -167.02     0.11
 10   0.1557  -2406.48    -0.03    -167.18     0.09
 11   0.1559  -2409.80    -0.03    -167.31     0.11
 12   0.1587  -2491.66     0.02    -171.66     0.01
 13   0.2213  -4479.47     0.04    -282.24    -0.00
 14   0.2322  -4838.16     0.00    -304.45    -0.03
 15   0.2323  -4843.00     0.04    -304.72    -0.03
 16   0.3168  -7407.40     0.02    -506.22    -0.05
 17   0.3169  -7411.25    -0.02    -506.50     0.02
 18   0.3254  -7623.20     0.01    -529.14    -0.01
 19   0.3991  -8887.56     0.04    -740.86    -0.03
 20   0.4674  -8913.40     0.01    -947.96    -0.06
 21   1.1472   6148.72     0.05   -2187.54    -0.04
 22   1.1498   6077.33     0.02   -2191.80     0.04
 23   1.1499   6074.02    -0.05   -2191.99     0.02
 24   1.2072   4321.59    -0.02   -2295.86    -0.10
 25   1.3107   1041.40     0.11   -2524.33    -0.04
 26   1.3109   1036.73    -0.01   -2524.65    -0.00
 27   1.4613   -876.12    -0.06   -2916.90     0.04
 28   1.4723   -802.07    -0.04   -2946.32     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.

15RS278    quality flag:3

Type:     12:5EEEEEE12:5EEEEEE12:5EEEEEE

axisobj        54.494    54.508    54.479
ecceobj         0.418     0.418     0.417
incobj         13.772    13.772    13.772
qmin           31.247    31.260    31.278
qmax           77.806    77.808    77.705
amean          53.973    53.973    53.973
amin           53.354    53.335    53.307
amax           54.786    54.791    54.804
emean           0.406     0.406     0.406
emin            0.393     0.393     0.393
emax            0.421     0.421     0.419
imean          14.498    14.501    14.496
imin           13.824    13.825    13.823
imax           15.145    15.131    15.094
excite_mean     0.477     0.477     0.477
fracstop        1.000     1.000     1.000
cjmean          2.927     2.926     2.927

libcent 0       180.7     176.1     180.6
libamp  0        57.1      64.3      67.9
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       196.8     197.9     202.4
kozaiamp        180.0     179.9     179.9