Orbit Fit and Astrometric record for 15RV245

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: 15RV245   
# Created Fri Dec  3 02:13:27 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     34 observations of     34
# Arc:   5.25y
# First observation: 2015/06/23
#  Last observation: 2020/09/21
# Chi-squared of fit:     6.93 DOF:     62 RMS:  0.08
# Min/Max residuals:    -0.24    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.965374E-05  6.181708E-02  5.577504E-06  1.723567E-02  5.033300E-02  3.840570E-02
# Covariance matrix:
  1.1245E-13 -1.8288E-14 -1.8137E-15 -1.9451E-15  7.1507E-14 -1.0178E-14
 -1.8288E-14  3.4218E-13 -3.9587E-14  9.3821E-14  1.9064E-13  1.2421E-12
 -1.8137E-15 -3.9587E-14  6.4894E-14 -3.5874E-14 -2.5748E-14 -1.5789E-13
 -1.9451E-15  9.3821E-14 -3.5874E-14  6.0744E-14  5.2938E-14  3.7813E-13
  7.1507E-14  1.9064E-13 -2.5748E-14  5.2938E-14  2.0528E-13  7.2101E-13
 -1.0178E-14  1.2421E-12 -1.5789E-13  3.7813E-13  7.2101E-13  4.9963E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.136820   10.724183    1.004037   -0.005779    0.157473  2457197.102368
# Heliocentric elements and errors
Epoch:              2457196.5000  =  2015/06/23
Mean Anomaly:           51.09374 +/-     0.003
Argument of Peri:      260.65101 +/-     0.002
Long of Asc Node:      359.97636 +/-     0.000
Inclination:            15.41692 +/-     0.000
Eccentricity:         0.47905568 +/-    0.0000
Semi-Major Axis:     21.92672162 +/-    0.0008
Time of Perihelion: 2451873.8954 +/-       0.5
Perihelion:          11.42260105 +/-    0.0007
Aphelion:            32.43084219 +/-    0.0013
Period (y)              102.6760 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           19.53562293 +/-    0.0002
Ecliptic Y            2.67884059 +/-    0.0000
Ecliptic Z            0.74095008 +/-    0.0000
Ecliptic XDOT         0.00138864 +/-    0.0000
Ecliptic YDOT         0.00367952 +/-    0.0000
Ecliptic ZDOT         0.00101484 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   19.73213510 +/-    0.0002
Geocenter to KBO     19.86746375 +/-    0.0002
# Hcoef: 10.14

The following table shows the complete astrometric record for 15RV245. 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 (15RV245) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.60159  00 36 03.636  +06 12 36.77  22.6r 15RV245   568  C~2Gdr      
2015 07  14.55013  00 36 36.879  +06 22 24.67  22.9r 15RV245   568  C~2Gdr      
2015 07  19.52115  00 36 33.010  +06 23 30.24  22.8r 15RV245   568  C~2Gdr      
2015 08  13.48810  00 35 07.928  +06 21 51.70  23.6r 15RV245   568  C~2Gds      
2015 08  13.54153  00 35 07.612  +06 21 50.72  23.1r 15RV245   568  C~2Gds      
2015 08  13.56200  00 35 07.521  +06 21 50.32  23.1r 15RV245   568  C~2Gds      
2015 08  19.55072  00 34 32.079  +06 19 45.89  23.2r 15RV245   568  C~2Gds      
2015 08  19.59211  00 34 31.809  +06 19 44.68  23.8r 15RV245   568  C~2Gds      
2015 08  19.62083  00 34 31.640  +06 19 44.05  23.0r 15RV245   568  C~2Gds      
2015 08  20.42524  00 34 26.507  +06 19 24.45  22.7r 15RV245   568  C~2Gds      
2015 08  20.47472  00 34 26.177  +06 19 23.24  22.7r 15RV245   568  C~2Gds      
2015 09  07.56844  00 32 09.496  +06 09 33.42  23.5w 15RV245   568  C~2Gds      
2015 09  09.39585  00 31 53.871  +06 08 19.69  23.2r 15RV245   568  C~2Gds      
2015 09  09.43729  00 31 53.504  +06 08 18.06  23.2r 15RV245   568  C~2Gds      
2015 09  09.47825  00 31 53.143  +06 08 16.35  23.2r 15RV245   568  C~2Gds      
2015 09  10.50253  00 31 44.240  +06 07 34.02  23.5w 15RV245   568  C~2Gds      
2015 09  18.46210  00 30 32.702  +06 01 44.62  23.4w 15RV245   568  C~2Gds      
2015 10  08.34456  00 27 25.291  +05 45 31.35  23.3w 15RV245   568  C~2Gds      
2015 10  08.39722  00 27 24.794  +05 45 28.72  22.3w 15RV245   568  C~2Gds      
2015 10  09.31422  00 27 16.203  +05 44 42.46  22.7w 15RV245   568  C~2Gds      
2015 11  10.43470  00 22 52.237  +05 20 14.45  23.7w 15RV245   568  C~2Gds      
2015 12  08.23353  00 20 53.982  +05 09 00.93  23.4w 15RV245   568  C~2Gds      
2016 01  01.29622  00 21 05.747  +05 10 53.53  23.8w 15RV245   568  C~2Gds      
2016 09  05.57499  00 44 09.356  +08 29 28.60        15RV245   568  C~2Gds      
2016 09  06.52410  00 44 01.804  +08 28 55.95        15RV245   568  C~2Gds      
2016 09  06.56619  00 44 01.461  +08 28 54.42        15RV245   568  C~2Gds      
2016 09  27.47990  00 40 58.618  +08 14 25.77  23.5w 15RV245   568  C~2Gds      
2016 12  25.26669  00 32 24.738  +07 24 40.20        15RV245   568  C~2Gds      
2016 12  26.24341  00 32 25.707  +07 24 44.24        15RV245   568  C~2Gds      
2016 12  29.23147  00 32 29.778  +07 25 03.67        15RV245   568  C~2Gds      
2017 01  02.30911  00 32 37.994  +07 25 47.04        15RV245   568  C~2Gds      
2017 01  27.27188  00 34 32.121  +07 37 11.01  24.2w 15RV245   568  C~2Gds      
2020 09  21.344390 01 23 48.363  +16 02 52.10  24.4G 15RV245   G37  C~4AD9      
2020 09  21.401200 01 23 47.915  +16 02 50.44        15RV245   G37  C~4AD9      

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    -0.03       0.00    -0.05
     2   0.0574      0.00    -0.09       0.00    -0.08
     3   0.0710      0.00     0.03       0.00     0.01
     4   0.1393      0.00    -0.02       0.00     0.09
     5   0.1395      0.00    -0.24       0.00     0.05
     6   0.1395      0.00     0.13       0.00     0.01
     7   0.1559      0.00    -0.14       0.00     0.22
     8   0.1560      0.00    -0.14       0.00    -0.00
     9   0.1561      0.00     0.14       0.00     0.06
    10   0.1583      0.00    -0.03       0.00    -0.02
    11   0.1584      0.00    -0.07       0.00    -0.02
    12   0.2080      0.00     0.07       0.00     0.09
    13   0.2130      0.00     0.04       0.00     0.01
    14   0.2131      0.00     0.01       0.00     0.07
    15   0.2132      0.00     0.02       0.00     0.04
    16   0.2160      0.00     0.01       0.00     0.00
    17   0.2378      0.00     0.13       0.00    -0.04
    18   0.2922      0.00     0.00       0.00    -0.10
    19   0.2924      0.00     0.11       0.00    -0.08
    20   0.2949      0.00     0.10       0.00    -0.07
    21   0.3828      0.00    -0.05       0.00    -0.00
    22   0.4590      0.00     0.12       0.00    -0.07
    23   0.5248      0.00     0.04       0.00    -0.12
    24   1.2046      0.00     0.07       0.00    -0.01
    25   1.2072      0.00     0.04       0.00     0.06
    26   1.2073      0.00     0.06       0.00     0.00
    27   1.2646      0.00     0.13       0.00    -0.02
    28   1.5076      0.00    -0.10       0.00    -0.04
    29   1.5103      0.00    -0.11       0.00    -0.04
    30   1.5185      0.00     0.00       0.00     0.08
    31   1.5297      0.00     0.07       0.00     0.09
    32   1.5980      0.00    -0.07       0.00    -0.03
    33   5.2478      0.00    -0.04       0.00    -0.01
    34   5.2479      0.00     0.02       0.00     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.

15RV245    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.861    21.861    21.861
ecceobj         0.477     0.477     0.477
incobj         15.406    15.406    15.406
qmin           11.344    11.046    11.344
qmax           33.175    33.439    34.243
amean          21.987    21.894    22.158
amin           21.721    20.815    21.721
amax           22.358    22.479    22.962
emean           0.479     0.478     0.481
emin            0.471     0.461     0.471
emax            0.487     0.490     0.491
imean          16.097    17.318    16.145
imin           15.902    15.902    15.902
imax           16.376    19.303    16.350
excite_mean     0.553     0.563     0.555
fracstop        0.001     0.005     0.001
cjmean          2.806     2.802     2.799

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       266.4     308.6     267.6
kozaiamp          5.4      47.8       6.3