Orbit Fit and Astrometric record for 15RS277

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: 15RS277   
# Created Sun Apr 21 01:10:09 2019
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:   2.35y
# First observation: 2015/07/19
#  Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000088   0.028264  -0.000005  -0.001870   0.027270   0.000000
# Chi-squared of fit:     5.94 DOF:   40 RMS:  0.09
# Min/Max residuals:    -0.19    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.718263E-05  2.796693E-02 -1.101281E-06 -1.869020E-03  2.706034E-02  5.798634E-03
# Covariance matrix:
  2.8868E-13  6.6086E-14  1.4662E-15 -1.7081E-14  2.6864E-13  5.3140E-12
  6.6086E-14  6.6695E-13  1.4185E-14 -7.8239E-14  4.7455E-13  2.3905E-11
  1.4662E-15  1.4185E-14  1.3117E-13 -1.0890E-13  9.7945E-15  7.7796E-13
 -1.7081E-14 -7.8239E-14 -1.0890E-13  1.7929E-13 -6.3618E-14 -4.0252E-12
  2.6864E-13  4.7455E-13  9.7945E-15 -6.3618E-14  5.6193E-13  1.9539E-11
  5.3140E-12  2.3905E-11  7.7796E-13 -4.0252E-12  1.9539E-11  1.2271E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.069459    9.572984    0.973521    0.005626   -0.296035  2457222.999319
# Heliocentric elements and errors
Epoch:              2457220.5000  =  2015/07/17
Mean Anomaly:           63.64753 +/-     0.084
Argument of Peri:       80.14762 +/-     0.029
Long of Asc Node:      203.72851 +/-     0.003
Inclination:             3.92597 +/-     0.001
Eccentricity:         0.18343629 +/-    0.0013
Semi-Major Axis:     39.27605758 +/-    0.0203
Time of Perihelion: 2441325.1782 +/-      17.0
Perihelion:          32.07140321 +/-    0.0524
Aphelion:            46.48071196 +/-    0.0552
Period (y)              246.1501 +/-      0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.88377881 +/-    0.0010
Ecliptic Y            5.23418246 +/-    0.0002
Ecliptic Z            0.68974891 +/-    0.0000
Ecliptic XDOT         0.00010908 +/-    0.0000
Ecliptic YDOT         0.00288201 +/-    0.0000
Ecliptic ZDOT        -0.00017806 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.25970423 +/-    0.0010
Geocenter to KBO     36.95444491 +/-    0.0010
# Hcoef:  9.19

The following table shows the complete astrometric record for 15RS277. 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 (15RS277) followed by the observatory code and reference code for the source of the astrometry.

2015 07  19.49853  00 33 29.781  +04 46 34.48  25.2r 15RS277   568  C~2lVN      
2015 08  11.49021  00 32 48.793  +04 42 24.49  24.7r 15RS277   568  C~2lVN      
2015 09  08.39679  00 31 05.151  +04 31 20.25  24.5r 15RS277   568  C~2lVN      
2015 09  08.50096  00 31 04.663  +04 31 17.38  24.5r 15RS277   568  C~2lVN      
2015 09  08.54456  00 31 04.467  +04 31 16.02  24.9r 15RS277   568  C~2lVN      
2015 09  09.52009  00 31 00.053  +04 30 47.30  25.0w 15RS277   568  C~2lVN      
2015 09  10.46103  00 30 55.772  +04 30 19.40  25.1w 15RS277   568  C~2lVN      
2015 09  16.44783  00 30 27.764  +04 27 16.39  24.8w 15RS277   568  C~2lVN      
2015 10  07.35040  00 28 44.828  +04 15 54.16  24.7r 15RS277   568  C~2lVN      
2015 10  07.39951  00 28 44.582  +04 15 52.52  25.1r 15RS277   568  C~2lVN      
2015 11  07.23924  00 26 26.358  +04 00 05.57  24.9w 15RS277   568  C~2lVN      
2015 11  07.29177  00 26 26.154  +04 00 04.20  25.0w 15RS277   568  C~2lVN      
2015 11  10.36966  00 26 14.968  +03 58 45.06  25.3w 15RS277   568  C~2lVN      
2015 12  07.31568  00 25 09.392  +03 50 29.96  24.8w 15RS277   568  C~2lVN      
2016 09  05.58308  00 37 23.104  +05 04 34.48  25.4w 15RS277   568  C~2lVN      
2016 09  06.53219  00 37 18.984  +05 04 07.83  24.8w 15RS277   568  C~2lVN      
2016 09  06.57428  00 37 18.783  +05 04 06.78  25.3w 15RS277   568  C~2lVN      
2016 09  26.55688  00 35 44.744  +04 53 52.87  24.7w 15RS277   568  C~2lVN      
2016 09  27.48878  00 35 40.156  +04 53 22.35  24.9w 15RS277   568  C~2lVN      
2016 11  03.39726  00 32 46.940  +04 33 56.53  24.8w 15RS277   568  C~2lVN      
2016 11  03.46220  00 32 46.689  +04 33 54.79  25.2w 15RS277   568  C~2lVN      
2017 01  03.20730  00 31 14.137  +04 21 24.58        15RS277   568  C~2lVN      
2017 11  22.37200  00 37 47.042  +04 58 15.37  24.6w 15RS277   568  C~2lVN      

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    -0.17       0.00     0.00
  2   0.0629   -661.66     0.01      11.44    -0.04
  3   0.1394  -2347.71     0.18      11.67    -0.11
  4   0.1396  -2355.55     0.10      11.91     0.11
  5   0.1398  -2358.78     0.13      11.82     0.01
  6   0.1424  -2430.77    -0.05      11.46     0.01
  7   0.1450  -2500.61    -0.07      11.07     0.02
  8   0.1614  -2957.75    -0.19       8.14     0.01
  9   0.2186  -4642.19    -0.06     -10.77    -0.00
 10   0.2188  -4646.22    -0.05     -10.82    -0.02
 11   0.3032  -6921.90     0.02     -62.85    -0.00
 12   0.3033  -6925.25    -0.02     -62.90     0.03
 13   0.3118  -7110.50     0.10     -69.33     0.15
 14   0.3855  -8209.20     0.01    -135.43     0.01
 15   1.1337   3631.19     0.17    -377.06    -0.13
 16   1.1363   3564.09     0.07    -377.43    -0.12
 17   1.1364   3560.92    -0.07    -377.22     0.09
 18   1.1911   2027.18    -0.08    -390.17     0.07
 19   1.1937   1952.13     0.04    -391.30    -0.16
 20   1.2947   -887.18    -0.10    -444.56    -0.02
 21   1.2949   -891.31     0.14    -444.68    -0.04
 22   1.4612  -2459.14    -0.06    -588.76     0.03
 23   2.3460   3811.61    -0.06    -866.18     0.11

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.

15RS277    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.645    39.709    39.582
ecceobj         0.186     0.190     0.183
incobj          3.910     3.910     3.910
qmin           31.353    31.289    31.445
qmax           48.255    48.351    48.176
amean          39.457    39.457    39.457
amin           38.968    38.944    38.958
amax           40.000    40.047    40.025
emean           0.189     0.190     0.187
emin            0.171     0.173     0.170
emax            0.206     0.208     0.204
imean           4.784     4.893     4.803
imin            4.245     4.307     4.238
imax            5.364     5.394     5.398
excite_mean     0.206     0.209     0.205
fracstop        1.000     1.000     1.000
cjmean          3.003     3.002     3.004

libcent 0       180.4     179.9     180.1
libamp  0       103.4     110.7     104.6
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       166.3     190.3     167.7
kozaiamp        180.0     180.0     180.0