Orbit Fit and Astrometric record for 15FN494

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: 15FN494   
# Created Tue Apr  1 01:10:22 2025
# Orbit generated from Bernstein formalism
# Fitting     37 observations of     37
# Arc:  62.83d
# First observation: 2015/01/16
#  Last observation: 2015/03/20
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.030063  -0.000001  -0.017913   0.026745   0.000000
# Chi-squared of fit:    11.22 DOF:     68 RMS:  0.10
# Min/Max residuals:    -0.20    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.744836E-05  2.990430E-02 -1.149245E-05 -1.787252E-02  2.666895E-02  1.792287E-03
# Covariance matrix:
  1.1096E-13  5.5795E-12  2.0768E-14 -1.0311E-12  2.2550E-12  3.3514E-10
  5.5795E-12  5.0678E-08  5.2324E-11  4.0985E-11  9.0622E-09  1.8888E-07
  2.0768E-14  5.2324E-11  1.1326E-13 -6.3059E-13  9.6736E-12  2.7822E-10
 -1.0311E-12  4.0985E-11 -6.3059E-13  2.9622E-11 -1.5050E-11 -5.7507E-09
  2.2550E-12  9.0622E-09  9.6736E-12 -1.5050E-11  1.6464E-09  4.0541E-08
  3.3514E-10  1.8888E-07  2.7822E-10 -5.7507E-09  4.0541E-08  2.4869E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
  -10.257832  151.867170    0.578750   -0.141073   -0.780437  2457039.061148
# Heliocentric elements and errors
Epoch:              2457030.5000  =  2015/01/08
Mean Anomaly:            0.78567 +/-     0.954
Argument of Peri:      193.73654 +/-     6.324
Long of Asc Node:      314.77219 +/-     0.120
Inclination:            32.38575 +/-     0.185
Eccentricity:         0.66499450 +/-    0.0172
Semi-Major Axis:    114.08797813 +/-    5.3174
Time of Perihelion: 2456059.1016 +/-    1177.3
Perihelion:          38.22009985 +/-    2.6515
Aphelion:           189.95585642 +/-    9.0686
Period (y)             1218.6192 +/-     85.20
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.96791677 +/-    0.0495
Ecliptic Y           18.28227737 +/-    0.0265
Ecliptic Z           -6.67780221 +/-    0.0102
Ecliptic XDOT        -0.00132296 +/-    0.0001
Ecliptic YDOT        -0.00278133 +/-    0.0001
Ecliptic ZDOT        -0.00183815 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.28469988 +/-    0.0445
Geocenter to KBO     37.49679623 +/-    0.0571
# Hcoef:  8.35

The following table shows the complete astrometric record for 15FN494. 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 (15FN494) followed by the observatory code and reference code for the source of the astrometry.

2015 01  16.56037  10 00 53.28   +01 12 48.5   23.5z 15FN494   T09  C~8eRp      
2015 01  16.59524  10 00 53.12   +01 12 48.5   23.7z 15FN494   T09  C~8eRp      
2015 01  16.64776  10 00 52.90   +01 12 48.6   23.7z 15FN494   T09  C~8eRp      
2015 01  16.66214  10 00 52.83   +01 12 48.6   24.0z 15FN494   T09  C~8eRp      
2015 01  17.37763  10 00 49.78   +01 12 50.5   24.2i 15FN494   T09  C~8eRp      
2015 01  17.42357  10 00 49.58   +01 12 50.6   24.0i 15FN494   T09  C~8eRp      
2015 01  17.42812  10 00 49.56   +01 12 50.6   23.9i 15FN494   T09  C~8eRp      
2015 01  17.43268  10 00 49.54   +01 12 50.6   23.7i 15FN494   T09  C~8eRp      
2015 01  17.43723  10 00 49.53   +01 12 50.6   23.9i 15FN494   T09  C~8eRp      
2015 01  17.44180  10 00 49.52   +01 12 50.6   23.7i 15FN494   T09  C~8eRp      
2015 01  19.39214  10 00 40.98   +01 12 57.4   23.7z 15FN494   T09  C~8eRp      
2015 01  19.43808  10 00 40.78   +01 12 57.6   23.7z 15FN494   T09  C~8eRp      
2015 01  19.44263  10 00 40.76   +01 12 57.7   24.1z 15FN494   T09  C~8eRp      
2015 01  19.44721  10 00 40.74   +01 12 57.6   23.7z 15FN494   T09  C~8eRp      
2015 01  19.45179  10 00 40.71   +01 12 57.7   23.9z 15FN494   T09  C~8eRp      
2015 01  20.39453  10 00 36.52   +01 13 01.6   25.0g 15FN494   T09  C~8eRp      
2015 01  20.39935  10 00 36.50   +01 13 01.6   25.4g 15FN494   T09  C~8eRp      
2015 01  20.40897  10 00 36.47   +01 13 01.4   24.5g 15FN494   T09  C~8eRp      
2015 01  20.41375  10 00 36.42   +01 13 01.6   24.9g 15FN494   T09  C~8eRp      
2015 01  20.44268  10 00 36.30   +01 13 01.9   24.7g 15FN494   T09  C~8eRp      
2015 01  20.45227  10 00 36.25   +01 13 01.9   24.9g 15FN494   T09  C~8eRp      
2015 01  20.45704  10 00 36.23   +01 13 01.9   24.9g 15FN494   T09  C~8eRp      
2015 01  20.46183  10 00 36.22   +01 13 01.9   24.7g 15FN494   T09  C~8eRp      
2015 01  21.60626  10 00 31.03   +01 13 07.5   23.8i 15FN494   T09  C~8eRp      
2015 01  21.63572  10 00 30.90   +01 13 07.5   24.5i 15FN494   T09  C~8eRp      
2015 01  21.65807  10 00 30.80   +01 13 07.7   24.5i 15FN494   T09  C~8eRp      
2015 01  27.57640  10 00 03.13   +01 13 48.1   23.2y 15FN494   T09  C~8iai      
2015 01  27.60312  10 00 02.99   +01 13 48.4   23.7y 15FN494   T09  C~8iai      
2015 01  27.60667  10 00 02.99   +01 13 48.4   23.4y 15FN494   T09  C~8iai      
2015 01  27.63660  10 00 02.84   +01 13 48.7   24.2y 15FN494   T09  C~8iai      
2015 03  18.39734  09 55 55.01   +01 27 57.4   24.4r 15FN494   T09  C~8eRp      
2015 03  18.41671  09 55 54.92   +01 27 57.9   24.3r 15FN494   T09  C~8eRp      
2015 03  18.43485  09 55 54.84   +01 27 58.3   24.5r 15FN494   T09  C~8eRp      
2015 03  18.45301  09 55 54.76   +01 27 58.8   24.1r 15FN494   T09  C~8eRp      
2015 03  20.36143  09 55 46.52   +01 28 39.6   23.9i 15FN494   T09  C~8eRp      
2015 03  20.37600  09 55 46.46   +01 28 39.9   23.8i 15FN494   T09  C~8eRp      
2015 03  20.39052  09 55 46.39   +01 28 40.3   24.1i 15FN494   T09  C~8eRp      

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     0.06       0.00     0.18
     2   0.0001     -2.25    -0.03      -0.84     0.06
     3   0.0002     -5.37     0.09      -1.91     0.08
     4   0.0003     -6.35    -0.00      -2.27     0.01
     5   0.0022    -49.85    -0.06     -16.54     0.01
     6   0.0024    -52.70    -0.03     -17.50    -0.02
     7   0.0024    -52.98    -0.03     -17.61    -0.03
     8   0.0024    -53.26    -0.02     -17.71    -0.04
     9   0.0024    -53.40     0.12     -17.76    -0.00
    10   0.0024    -53.54     0.27     -17.82     0.04
    11   0.0078   -175.86    -0.07     -56.38     0.03
    12   0.0079   -178.73     0.01     -57.25     0.08
    13   0.0079   -179.05    -0.01     -57.26     0.16
    14   0.0079   -179.30     0.04     -57.46     0.05
    15   0.0079   -179.75    -0.12     -57.52     0.08
    16   0.0105   -239.96    -0.04     -75.92    -0.03
    17   0.0105   -240.24    -0.00     -76.02    -0.04
    18   0.0105   -240.59     0.28     -76.37    -0.20
    19   0.0105   -241.37    -0.18     -76.44    -0.18
    20   0.0106   -243.16    -0.07     -76.79     0.04
    21   0.0107   -243.86    -0.15     -77.06    -0.04
    22   0.0107   -244.14    -0.11     -77.16    -0.05
    23   0.0107   -244.28     0.06     -77.21    -0.00
    24   0.0138   -319.13    -0.17     -99.28    -0.09
    25   0.0139   -320.96    -0.03     -99.96    -0.20
    26   0.0140   -322.43    -0.02    -100.30    -0.11
    27   0.0302   -725.19     0.06    -208.04    -0.00
    28   0.0302   -727.26    -0.10    -208.49     0.02
    29   0.0302   -727.26     0.15    -208.49     0.08
    30   0.0303   -729.47     0.07    -209.00     0.11
    31   0.1666  -4508.28     0.13    -717.23    -0.13
    32   0.1666  -4509.72     0.05    -717.24    -0.07
    33   0.1667  -4510.99     0.06    -717.28    -0.05
    34   0.1667  -4512.29     0.03    -717.23     0.06
    35   0.1719  -4642.38    -0.08    -722.32     0.04
    36   0.1720  -4643.32    -0.02    -722.35     0.05
    37   0.1720  -4644.45    -0.15    -722.35     0.10

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.

15FN494    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0