Orbit Fit and Astrometric record for 15RX278

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: 15RX278   
# Created Thu Feb 21 02:10:22 2019
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   34
# Arc:   2.50y
# First observation: 2015/06/23
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000083   0.024779  -0.000030  -0.010702   0.026651   0.000000
# Chi-squared of fit:     6.86 DOF:   62 RMS:  0.08
# Min/Max residuals:    -0.32    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.459661E-05  2.420788E-02 -6.164175E-06 -1.057682E-02  2.616785E-02  2.440249E-03
# Covariance matrix:
  1.3452E-13  2.7642E-14  6.3888E-15 -3.9857E-14  1.2485E-13  1.8951E-12
  2.7642E-14  3.1939E-13  3.3573E-14 -1.6945E-13  2.6555E-13  7.9391E-12
  6.3888E-15  3.3573E-14  8.7196E-14 -9.3698E-14  3.2406E-14  1.5671E-12
 -3.9857E-14 -1.6945E-13 -9.3698E-14  2.5371E-13 -1.7166E-13 -7.4671E-12
  1.2485E-13  2.6555E-13  3.2406E-14 -1.7166E-13  3.3537E-13  8.0721E-12
  1.8951E-12  7.9391E-12  1.5671E-12 -7.4671E-12  8.0721E-12  3.4823E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.738587    9.428486    1.007162   -0.004042    0.136160  2457197.020648
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           96.58114 +/-     0.181
Argument of Peri:       71.40548 +/-     0.168
Long of Asc Node:      191.90805 +/-     0.000
Inclination:            23.61313 +/-     0.001
Eccentricity:         0.06786573 +/-    0.0007
Semi-Major Axis:     37.62616583 +/-    0.0042
Time of Perihelion: 2434574.1142 +/-      42.2
Perihelion:          35.07263861 +/-    0.0253
Aphelion:            40.17969304 +/-    0.0254
Period (y)              230.8039 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.70833872 +/-    0.0008
Ecliptic Y            5.24186331 +/-    0.0001
Ecliptic Z            1.15924076 +/-    0.0000
Ecliptic XDOT        -0.00013251 +/-    0.0000
Ecliptic YDOT         0.00253964 +/-    0.0000
Ecliptic ZDOT        -0.00109829 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.08857807 +/-    0.0008
Geocenter to KBO     38.21482938 +/-    0.0008
# Hcoef:  8.08

The following table shows the complete astrometric record for 15RX278. 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 (15RX278) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.51987  00 31 54.293  +05 20 03.82  24.1r 15RX278   568  C~2lVS      
2015 07  14.61234  00 32 09.528  +05 20 27.04  24.0r 15RX278   568  C~2lVS      
2015 07  19.59146  00 32 07.008  +05 19 52.64  23.9r 15RX278   568  C~2lVS      
2015 08  13.47989  00 31 21.435  +05 13 20.90  24.3r 15RX278   568  C~2lVS      
2015 08  13.50863  00 31 21.375  +05 13 20.28  24.2r 15RX278   568  C~2lVS      
2015 08  13.51278  00 31 21.340  +05 13 20.40  24.3r 15RX278   568  C~2lVS      
2015 08  13.53335  00 31 21.275  +05 13 19.90  24.2r 15RX278   568  C~2lVS      
2015 08  19.61259  00 31 02.537  +05 10 52.72  23.9r 15RX278   568  C~2lVS      
2015 08  20.41706  00 30 59.888  +05 10 31.69  23.7r 15RX278   568  C~2lVS      
2015 08  20.46647  00 30 59.719  +05 10 30.39  23.7r 15RX278   568  C~2lVS      
2015 09  08.39679  00 29 45.819  +05 01 00.40  23.6r 15RX278   568  C~2lVS      
2015 09  08.50096  00 29 45.349  +05 00 56.99  23.8r 15RX278   568  C~2lVS      
2015 09  08.54456  00 29 45.157  +05 00 55.45  23.8r 15RX278   568  C~2lVS      
2015 09  09.52009  00 29 40.871  +05 00 22.49  23.9w 15RX278   568  C~2lVS      
2015 09  10.46103  00 29 36.700  +04 59 50.45  23.9w 15RX278   568  C~2lVS      
2015 10  03.37463  00 27 48.461  +04 45 53.06  23.6w 15RX278   568  C~2lVS      
2015 10  07.34146  00 27 29.337  +04 43 22.53  23.7r 15RX278   568  C~2lVS      
2015 10  07.35040  00 27 29.288  +04 43 22.30  23.6r 15RX278   568  C~2lVS      
2015 10  07.39951  00 27 29.040  +04 43 20.40  23.4r 15RX278   568  C~2lVS      
2015 11  07.23924  00 25 15.072  +04 25 00.25  23.8w 15RX278   568  C~2lVS      
2015 11  07.29177  00 25 14.878  +04 24 58.64  23.9w 15RX278   568  C~2lVS      
2015 11  10.36966  00 25 04.083  +04 23 23.26  23.9w 15RX278   568  C~2lVS      
2016 01  01.24474  00 24 03.910  +04 09 11.36  23.9w 15RX278   568  C~2lVS      
2016 09  05.58308  00 36 08.212  +05 01 26.78  23.8w 15RX278   568  C~2lVS      
2016 09  06.53219  00 36 04.194  +05 00 55.57  23.7w 15RX278   568  C~2lVS      
2016 09  06.57428  00 36 04.014  +05 00 54.20  24.0w 15RX278   568  C~2lVS      
2016 09  26.55688  00 34 32.253  +04 49 04.51  23.7w 15RX278   568  C~2lVS      
2016 11  03.39726  00 31 39.320  +04 26 10.07  24.0w 15RX278   568  C~2lVS      
2016 11  03.46220  00 31 39.054  +04 26 07.89  23.9w 15RX278   568  C~2lVS      
2016 12  29.23783  00 30 05.690  +04 08 48.26  23.7w 15RX278   568  C~2lVS      
2017 01  03.20730  00 30 11.689  +04 08 47.30  24.3w 15RX278   568  C~2lVS      
2017 01  03.25288  00 30 11.753  +04 08 47.26        15RX278   568  C~2lVS      
2017 09  22.47204  00 41 05.862  +04 50 53.30        15RX278   568  C~2lVS      
2017 12  23.31121  00 36 06.288  +04 08 34.71  23.8w 15RX278   568  C~2lVS      

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    -0.05
  2   0.0577    218.27    -0.04     -68.32     0.07
  3   0.0714    170.13    -0.01     -85.11     0.00
  4   0.1395   -609.87    -0.06    -176.82    -0.20
  5   0.1396   -610.94     0.29    -177.04    -0.32
  6   0.1396   -611.38     0.06    -176.72     0.01
  7   0.1397   -612.46    -0.02    -176.80     0.01
  8   0.1563   -927.74    -0.04    -201.66     0.19
  9   0.1585   -972.40    -0.03    -205.38    -0.01
 10   0.1586   -975.23    -0.03    -205.58    -0.02
 11   0.2105  -2214.76    -0.06    -293.55     0.02
 12   0.2108  -2222.56    -0.09    -293.91     0.12
 13   0.2109  -2225.80    -0.08    -294.19     0.04
 14   0.2136  -2297.67    -0.01    -299.18     0.01
 15   0.2161  -2367.59    -0.01    -304.00     0.03
 16   0.2789  -4185.01    -0.07    -433.86     0.06
 17   0.2897  -4507.27     0.08    -459.02    -0.14
 18   0.2897  -4508.03     0.05    -458.94    -0.01
 19   0.2899  -4512.19    -0.07    -459.22    -0.01
 20   0.3743  -6788.98     0.00    -676.31     0.02
 21   0.3745  -6792.28     0.02    -676.63     0.06
 22   0.3829  -6978.52     0.08    -700.23     0.04
 23   0.5249  -8144.26    -0.03   -1125.71     0.03
 24   1.2048   3048.48     0.04   -2519.32     0.03
 25   1.2074   2980.98     0.03   -2524.45     0.03
 26   1.2075   2977.97     0.08   -2524.66     0.03
 27   1.2623   1437.77     0.00   -2638.41     0.01
 28   1.3659  -1480.38     0.01   -2883.99     0.02
 29   1.3660  -1484.90    -0.13   -2884.43     0.01
 30   1.5187  -3178.73     0.05   -3289.15     0.02
 31   1.5323  -3096.62     0.05   -3325.46     0.06
 32   1.5325  -3095.75     0.02   -3325.88    -0.04
 33   2.2504   6896.58    -0.04   -4846.89    -0.13
 34   2.5018   1776.40    -0.04   -5426.54     0.01

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.

15RX278    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        37.924    37.940    37.909
ecceobj         0.068     0.069     0.066
incobj         23.506    23.507    23.506
qmin           34.576    34.605    34.404
qmax           41.223    41.229    41.316
amean          37.800    37.818    37.783
amin           37.501    37.527    37.486
amax           38.103    38.119    38.089
emean           0.059     0.061     0.057
emin            0.034     0.039     0.029
emax            0.083     0.083     0.086
imean          24.374    24.374    24.366
imin           23.303    23.302    23.274
imax           25.290    25.287    25.293
excite_mean     0.417     0.417     0.417
fracstop        1.000     1.000     1.000
cjmean          2.833     2.833     2.834

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       175.0     175.5     175.0
kozaiamp        180.0     180.0     179.9