Orbit Fit and Astrometric record for 15RH277

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: 15RH277   
# Created Sun Dec  5 02:13:23 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     23 observations of     23
# Arc:   5.55y
# First observation: 2015/06/23
#  Last observation: 2021/01/11
# Chi-squared of fit:     3.67 DOF:     40 RMS:  0.07
# Min/Max residuals:    -0.19    0.15
# Exact a, adot, b, bdot, g, gdot:
  2.867971E-05  1.349209E-01  5.064942E-06  2.203431E-02  7.302793E-02 -4.710743E-02
# Covariance matrix:
  1.5556E-13 -6.4688E-14 -2.4057E-15 -8.0530E-15  8.8388E-14 -6.1675E-14
 -6.4688E-14  3.2066E-13 -2.2724E-14  3.6402E-14  1.4066E-13  2.2791E-13
 -2.4057E-15 -2.2724E-14  6.5248E-14 -1.5657E-14 -1.8262E-14 -1.4657E-14
 -8.0530E-15  3.6402E-14 -1.5657E-14  9.8481E-15  1.3462E-14  2.6942E-14
  8.8388E-14  1.4066E-13 -1.8262E-14  1.3462E-14  2.1052E-13  6.9354E-14
 -6.1675E-14  2.2791E-13 -1.4657E-14  2.6942E-14  6.9354E-14  1.7196E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.662996    8.814091    1.008647   -0.005702    0.124610  2457197.060258
# Heliocentric elements and errors
Epoch:              2457196.5000  =  2015/06/23
Mean Anomaly:          334.50254 +/-     0.002
Argument of Peri:       89.62388 +/-     0.000
Long of Asc Node:      349.35500 +/-     0.000
Inclination:            10.12384 +/-     0.000
Eccentricity:         0.50849036 +/-    0.0000
Semi-Major Axis:     20.88826018 +/-    0.0000
Time of Perihelion: 2459666.2114 +/-       0.2
Perihelion:          10.26678129 +/-    0.0001
Aphelion:            31.50973906 +/-    0.0001
Period (y)               95.4688 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.54488222 +/-    0.0000
Ecliptic Y            1.08034296 +/-    0.0000
Ecliptic Z            0.63634078 +/-    0.0000
Ecliptic XDOT        -0.00255880 +/-    0.0000
Ecliptic YDOT         0.00471607 +/-    0.0000
Ecliptic ZDOT         0.00074320 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.60295781 +/-    0.0000
Geocenter to KBO     13.69354412 +/-    0.0000
# Hcoef: 13.19

The following table shows the complete astrometric record for 15RH277. 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 (15RH277) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.55948  00 28 10.266  +05 56 29.31  25.2r 15RH277   568  C~2jiA      
2015 07  14.60417  00 29 21.639  +06 13 38.03  24.3r 15RH277   568  C~2jiA      
2015 07  19.58329  00 29 21.575  +06 15 55.64  24.6r 15RH277   568  C~2jiA      
2015 08  20.41299  00 26 52.715  +06 14 19.61  24.4r 15RH277   568  C~2jiA      
2015 08  20.46234  00 26 52.296  +06 14 18.17  24.1r 15RH277   568  C~2jiA      
2015 09  07.55863  00 23 51.009  +06 02 01.67  24.5w 15RH277   568  C~2jiA      
2015 09  09.38473  00 23 29.992  +06 00 25.33  24.5r 15RH277   568  C~2jiA      
2015 09  09.42909  00 23 29.464  +06 00 22.91  24.6r 15RH277   568  C~2jiA      
2015 09  09.47005  00 23 28.980  +06 00 20.71  24.6r 15RH277   568  C~2jiA      
2015 09  10.48550  00 23 17.075  +05 59 25.63  24.6w 15RH277   568  C~2jiA      
2015 09  18.48843  00 21 39.778  +05 51 38.56  24.8w 15RH277   568  C~2jiA      
2015 10  08.32880  00 17 26.989  +05 29 40.45  24.6w 15RH277   568  C~2jiA      
2015 10  08.38143  00 17 26.322  +05 29 36.89  24.4w 15RH277   568  C~2jiA      
2015 10  09.29849  00 17 14.790  +05 28 33.66  24.5w 15RH277   568  C~2jiA      
2016 09  05.57095  00 54 58.415  +10 53 34.37  24.4w 15RH277   568  C~2jiA      
2016 09  06.52006  00 54 48.343  +10 53 00.21  24.6w 15RH277   568  C~2jiA      
2016 09  06.56215  00 54 47.889  +10 52 58.73  24.5w 15RH277   568  C~2jiA      
2016 11  04.29478  00 42 24.736  +09 52 07.53  24.4w 15RH277   568  C~2jiA      
2016 11  04.35380  00 42 24.073  +09 52 03.57  24.4w 15RH277   568  C~2jiA      
2016 12  29.28084  00 38 46.008  +09 23 44.39  24.6w 15RH277   568  C~2jiA      
2017 01  02.31554  00 39 05.196  +09 25 03.49  24.7w 15RH277   568  C~2jiA      
2021 01  11.149260 03 33 28.205  +29 47 59.59  23.4G 15RH277   G37  C~4UHY      
2021 01  11.206010 03 33 27.859  +29 47 56.29        15RH277   G37  C~4UHY      

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     0.13       0.00    -0.01
     2   0.0576      0.00     0.08       0.00    -0.05
     3   0.0712      0.00     0.09       0.00     0.00
     4   0.1584      0.00    -0.10       0.00    -0.00
     5   0.1585      0.00    -0.02       0.00    -0.05
     6   0.2081      0.00     0.04       0.00     0.05
     7   0.2131      0.00    -0.03       0.00    -0.04
     8   0.2132      0.00    -0.03       0.00    -0.08
     9   0.2133      0.00     0.03       0.00    -0.09
    10   0.2161      0.00    -0.08       0.00    -0.07
    11   0.2380      0.00    -0.08       0.00     0.06
    12   0.2923      0.00    -0.02       0.00     0.02
    13   0.2925      0.00     0.15       0.00     0.07
    14   0.2950      0.00     0.09       0.00    -0.02
    15   1.2047      0.00     0.01       0.00     0.08
    16   1.2073      0.00    -0.11       0.00     0.01
    17   1.2074      0.00     0.03       0.00     0.08
    18   1.3682      0.00    -0.02       0.00     0.08
    19   1.3684      0.00    -0.02       0.00     0.01
    20   1.5187      0.00    -0.01       0.00    -0.03
    21   1.5298      0.00    -0.00       0.00     0.07
    22   5.5540      0.00    -0.02       0.00    -0.19
    23   5.5541      0.00     0.05       0.00     0.14

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.

15RH277    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        20.969    20.969    20.970
ecceobj         0.510     0.510     0.510
incobj         10.092    10.092    10.092
qmin           10.211    10.216     9.688
qmax           36.312    33.582    32.825
amean          21.406    19.441    19.642
amin           20.269    16.708    18.060
amax           23.442    21.995    21.685
emean           0.515     0.463     0.476
emin            0.492     0.384     0.432
emax            0.549     0.527     0.514
imean          11.734    12.239    12.036
imin           10.925    10.925    10.925
imax           13.073    13.433    12.737
excite_mean     0.553     0.510     0.519
fracstop        0.001     0.003     0.004
cjmean          2.822     2.948     2.925

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       120.4     161.9     171.2
kozaiamp         30.4      71.0      79.6