Orbit Fit and Astrometric record for 15RX245

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: 15RX245   
# Created Wed Dec  8 02:13:29 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     38 observations of     38
# Arc:   6.37y
# First observation: 2015/06/23
#  Last observation: 2021/11/05
# Chi-squared of fit:     7.14 DOF:     70 RMS:  0.08
# Min/Max residuals:    -0.25    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.449027E-05  1.471411E-02  3.030766E-06  3.134471E-03  1.596401E-02 -8.499576E-03
# Covariance matrix:
  1.4472E-13 -3.8289E-14  5.0462E-15 -9.2824E-15  7.0338E-14 -4.2326E-13
 -3.8289E-14  1.6789E-13 -2.3615E-14  4.2301E-14  8.7803E-14  1.9932E-12
  5.0462E-15 -2.3615E-14  6.2080E-14 -2.1058E-14 -1.1594E-14 -3.0027E-13
 -9.2824E-15  4.2301E-14 -2.1058E-14  2.1353E-14  2.0523E-14  5.3823E-13
  7.0338E-14  8.7803E-14 -1.1594E-14  2.0523E-14  1.3306E-13  9.8132E-13
 -4.2326E-13  1.9932E-12 -3.0027E-13  5.3823E-13  9.8132E-13  2.5340E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.054658    9.782043    1.006483   -0.000038    0.141119  2457197.098238
# Heliocentric elements and errors
Epoch:              2457196.5000  =  2015/06/23
Mean Anomaly:          357.88184 +/-     0.011
Argument of Peri:       65.40484 +/-     0.015
Long of Asc Node:        8.60551 +/-     0.000
Inclination:            12.16666 +/-     0.000
Eccentricity:         0.89173156 +/-    0.0004
Semi-Major Axis:    419.56510433 +/-    1.5111
Time of Perihelion: 2475665.9325 +/-   16859.0
Perihelion:          45.42565988 +/-    0.2386
Aphelion:           793.70454878 +/-    2.8639
Period (y)             8594.2354 +/-     46.43
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           61.75853740 +/-    0.0014
Ecliptic Y            9.62764471 +/-    0.0002
Ecliptic Z            0.06000214 +/-    0.0000
Ecliptic XDOT        -0.00186821 +/-    0.0000
Ecliptic YDOT         0.00223282 +/-    0.0000
Ecliptic ZDOT         0.00053624 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   62.50503856 +/-    0.0014
Geocenter to KBO     62.64146661 +/-    0.0014
# Hcoef:  6.07

The following table shows the complete astrometric record for 15RX245. 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 (15RX245) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.59746  00 35 52.099  +03 55 31.49  24.5r 15RX245   568  C~2Gu0      
2015 07  14.54187  00 35 59.593  +03 57 01.13  24.4r 15RX245   568  C~2Gu0      
2015 07  19.50673  00 35 57.658  +03 56 58.93  24.6r 15RX245   568  C~2Gu0      
2015 08  11.49525  00 35 31.303  +03 54 56.60  24.5r 15RX245   568  C~2Gu0      
2015 08  11.53687  00 35 31.225  +03 54 56.19  24.3r 15RX245   568  C~2Gu0      
2015 09  08.40090  00 34 27.188  +03 49 02.71  24.1r 15RX245   568  C~2Gu0      
2015 09  08.50503  00 34 26.896  +03 49 00.99  23.9r 15RX245   568  C~2Gu0      
2015 09  08.54864  00 34 26.770  +03 49 00.41  24.4r 15RX245   568  C~2Gu0      
2015 09  09.52420  00 34 24.063  +03 48 44.97  24.3w 15RX245   568  C~2Gu0      
2015 09  16.45310  00 34 04.181  +03 46 51.66  24.7w 15RX245   568  C~2Gu0      
2015 10  03.37987  00 33 12.867  +03 41 56.23  23.5w 15RX245   568  C~2Gu0      
2015 10  07.34557  00 33 00.674  +03 40 45.72  22.2r 15RX245   568  C~2Gu0      
2015 10  07.36748  00 33 00.597  +03 40 45.48  23.2r 15RX245   568  C~2Gu0      
2015 10  07.40358  00 33 00.488  +03 40 45.06  23.8r 15RX245   568  C~2Gu0      
2015 11  07.24449  00 31 33.483  +03 32 26.21  24.5w 15RX245   568  C~2Gu0      
2015 11  07.29726  00 31 33.353  +03 32 25.54  24.3w 15RX245   568  C~2Gu0      
2015 11  10.38064  00 31 26.112  +03 31 44.85  24.4w 15RX245   568  C~2Gu0      
2015 12  07.32092  00 30 41.393  +03 27 47.60  24.0w 15RX245   568  C~2Gu0      
2016 01  01.24995  00 30 36.371  +03 28 00.13  24.2w 15RX245   568  C~2Gu0      
2016 07  07.57912  00 38 51.452  +04 26 58.20        15RX245   568  C~2Gu0      
2016 07  08.55858  00 38 51.583  +04 27 01.13        15RX245   568  C~2Gu0      
2016 09  05.54486  00 37 26.033  +04 20 05.72        15RX245   568  C~2Gu0      
2016 09  07.48422  00 37 20.727  +04 19 35.99        15RX245   568  C~2Gu0      
2016 09  07.53054  00 37 20.597  +04 19 35.30        15RX245   568  C~2Gu0      
2016 09  26.55688  00 36 24.388  +04 14 15.91        15RX245   568  C~2Gu0      
2016 11  03.39726  00 34 32.579  +04 03 33.91        15RX245   568  C~2Gu0      
2016 11  03.46220  00 34 32.394  +04 03 33.01        15RX245   568  C~2Gu0      
2016 12  29.23783  00 33 23.985  +03 57 49.56        15RX245   568  C~2Gu0      
2017 01  03.20730  00 33 26.681  +03 58 14.79        15RX245   568  C~2Gu0      
2017 01  03.25288  00 33 26.705  +03 58 15.13        15RX245   568  C~2Gu0      
2017 01  27.23800  00 34 00.853  +04 02 32.51  23.5w 15RX245   568  C~2Gu0      
2017 01  28.23385  00 34 02.985  +04 02 47.71  24.1w 15RX245   568  C~2Gu0      
2017 01  30.24057  00 34 07.447  +04 03 19.64  24.2w 15RX245   568  C~2Gu0      
2020 10  20.124800 00 47 16.007  +06 14 29.18  23.7G 15RX245   G37  C~4Kz6      
2020 10  20.172910 00 47 15.870  +06 14 28.17        15RX245   G37  C~4Kz6      
2021 11  05.226610 00 49 39.560  +06 43 07.19  23.8G 15RX245   G37  C~5BZT      
2021 11  05.281400 00 49 39.406  +06 43 06.50        15RX245   G37  C~5BZT      
2021 11  05.336810 00 49 39.249  +06 43 05.56        15RX245   G37  C~5BZT      

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     0.02
     2   0.0573      0.00    -0.03       0.00    -0.06
     3   0.0709      0.00    -0.18       0.00     0.07
     4   0.1339      0.00     0.14       0.00     0.00
     5   0.1340      0.00     0.09       0.00    -0.03
     6   0.2103      0.00     0.05       0.00     0.04
     7   0.2106      0.00     0.07       0.00    -0.05
     8   0.2107      0.00     0.02       0.00     0.06
     9   0.2134      0.00     0.07       0.00     0.02
    10   0.2323      0.00    -0.13       0.00     0.06
    11   0.2787      0.00     0.04       0.00    -0.13
    12   0.2895      0.00     0.09       0.00    -0.25
    13   0.2896      0.00    -0.04       0.00    -0.10
    14   0.2897      0.00     0.02       0.00     0.12
    15   0.3741      0.00    -0.00       0.00    -0.07
    16   0.3743      0.00    -0.00       0.00    -0.03
    17   0.3827      0.00     0.12       0.00    -0.04
    18   0.4565      0.00     0.03       0.00    -0.01
    19   0.5247      0.00     0.03       0.00    -0.05
    20   1.0403      0.00     0.00       0.00     0.10
    21   1.0430      0.00    -0.01       0.00     0.01
    22   1.2045      0.00    -0.01       0.00     0.02
    23   1.2098      0.00    -0.04       0.00     0.03
    24   1.2099      0.00    -0.03       0.00     0.05
    25   1.2620      0.00     0.05       0.00    -0.01
    26   1.3656      0.00     0.17       0.00    -0.02
    27   1.3658      0.00    -0.06       0.00     0.03
    28   1.5185      0.00    -0.03       0.00     0.08
    29   1.5321      0.00     0.03       0.00     0.08
    30   1.5323      0.00    -0.05       0.00     0.14
    31   1.5979      0.00    -0.05       0.00     0.07
    32   1.6006      0.00    -0.08       0.00    -0.02
    33   1.6061      0.00    -0.09       0.00     0.06
    34   5.3266      0.00    -0.17       0.00     0.09
    35   5.3267      0.00     0.04       0.00    -0.07
    36   6.3700      0.00     0.05       0.00    -0.14
    37   6.3701      0.00     0.05       0.00     0.04
    38   6.3703      0.00     0.03       0.00    -0.02

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.

15RX245    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       464.355   464.321   464.389
ecceobj         0.902     0.902     0.902
incobj         12.097    12.097    12.097
qmin           41.274    41.302    41.210
qmax          904.575   900.388   901.580
amean         420.272   421.934   423.323
amin          393.140   396.600   395.051
amax          475.059   472.985   473.569
emean           0.891     0.892     0.892
emin            0.880     0.881     0.881
emax            0.904     0.904     0.904
imean          12.434    12.450    12.438
imin           12.249    12.248    12.246
imax           12.719    12.719    12.719
excite_mean     0.917     0.918     0.918
fracstop        1.000     1.000     1.000
cjmean          3.377     3.377     3.377

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        72.8      71.9      72.1
kozaiamp         10.1       8.6       8.9