Orbit Fit and Astrometric record for 15RE278

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: 15RE278   
# Created Thu Nov 14 02:10:31 2024
# Orbit generated from Bernstein formalism
# Fitting     38 observations of     38
# Arc:   2.50y
# First observation: 2015/06/23
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000031   0.025523  -0.000004  -0.003009   0.025091   0.000000
# Chi-squared of fit:    15.50 DOF:     70 RMS:  0.11
# Min/Max residuals:    -0.39    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.653021E-05  2.495743E-02 -1.898064E-06 -2.961397E-03  2.460048E-02  1.109404E-03
# Covariance matrix:
  1.5963E-13  2.6099E-14  5.2926E-16 -9.7462E-15  1.2593E-13  1.5418E-12
  2.6099E-14  3.3007E-13  1.0458E-14 -4.9641E-14  2.6486E-13  7.6558E-12
  5.2926E-16  1.0458E-14  9.1601E-14 -5.8470E-14  7.4451E-15  3.4239E-13
 -9.7462E-15 -4.9641E-14 -5.8470E-14  6.8425E-14 -4.2897E-14 -1.4956E-12
  1.2593E-13  2.6486E-13  7.4451E-15 -4.2897E-14  3.0613E-13  6.6562E-12
  1.5418E-12  7.6558E-12  3.4239E-13 -1.4956E-12  6.6562E-12  2.2997E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.404874   10.511080    1.004596   -0.003679    0.153939  2457197.094148
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:           13.85936 +/-     0.426
Argument of Peri:      152.13817 +/-     0.496
Long of Asc Node:      200.85550 +/-     0.001
Inclination:             6.88301 +/-     0.001
Eccentricity:         0.07092734 +/-    0.0002
Semi-Major Axis:     43.48489072 +/-    0.0026
Time of Perihelion: 2453158.2583 +/-     124.1
Perihelion:          40.40062320 +/-    0.0090
Aphelion:            46.56915824 +/-    0.0091
Period (y)              286.7582 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.98381816 +/-    0.0009
Ecliptic Y            6.39798375 +/-    0.0002
Ecliptic Z            0.99659392 +/-    0.0000
Ecliptic XDOT        -0.00037986 +/-    0.0000
Ecliptic YDOT         0.00274872 +/-    0.0000
Ecliptic ZDOT        -0.00032639 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.50472948 +/-    0.0009
Geocenter to KBO     40.64961294 +/-    0.0009
# Hcoef:  8.88

The following table shows the complete astrometric record for 15RE278. 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 (15RE278) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.59337  00 36 25.782  +05 27 12.43  24.7r 15RE278   568  C~2lVP      
2015 07  14.54596  00 36 41.834  +05 29 04.55  25.5r 15RE278   568  C~2lVP      
2015 07  19.51085  00 36 39.902  +05 28 54.16  24.5r 15RE278   568  C~2lVP      
2015 08  11.49932  00 36 03.862  +05 25 09.35  25.2r 15RE278   568  C~2lVP      
2015 08  11.55875  00 36 03.710  +05 25 08.37  25.6r 15RE278   568  C~2lVP      
2015 09  08.40498  00 34 29.976  +05 14 57.73  24.9r 15RE278   568  C~2lVP      
2015 09  08.50910  00 34 29.518  +05 14 55.02  24.8r 15RE278   568  C~2lVP      
2015 09  08.55273  00 34 29.354  +05 14 53.76  24.9r 15RE278   568  C~2lVP      
2015 09  09.52831  00 34 25.329  +05 14 27.25  25.1w 15RE278   568  C~2lVP      
2015 09  10.46917  00 34 21.425  +05 14 01.40  25.1w 15RE278   568  C~2lVP      
2015 09  16.45837  00 33 55.814  +05 11 11.11  25.0w 15RE278   568  C~2lVP      
2015 10  03.38583  00 32 39.451  +05 02 35.95  24.0w 15RE278   568  C~2lVP      
2015 10  07.35453  00 32 21.276  +05 00 31.97  24.3r 15RE278   568  C~2lVP      
2015 10  07.40769  00 32 21.035  +05 00 30.23  25.0r 15RE278   568  C~2lVP      
2015 11  07.24974  00 30 12.644  +04 45 24.39  25.4w 15RE278   568  C~2lVP      
2015 11  07.30254  00 30 12.452  +04 45 22.91  25.1w 15RE278   568  C~2lVP      
2015 11  10.38589  00 30 01.915  +04 44 05.58  25.0w 15RE278   568  C~2lVP      
2015 12  07.32615  00 28 59.292  +04 35 44.29  25.4w 15RE278   568  C~2lVP      
2016 01  01.25515  00 28 57.840  +04 33 54.33  25.5w 15RE278   568  C~2lVP      
2016 09  05.50258  00 40 19.729  +05 40 47.66  25.1w 15RE278   568  C~2lVP      
2016 09  06.45678  00 40 15.954  +05 40 22.63  25.2w 15RE278   568  C~2lVP      
2016 09  06.49805  00 40 15.792  +05 40 21.62  24.9w 15RE278   568  C~2lVP      
2016 09  26.43536  00 38 49.645  +05 30 48.30  25.4w 15RE278   568  C~2lVP      
2016 09  27.48878  00 38 44.853  +05 30 15.91  25.1w 15RE278   568  C~2lVP      
2016 11  03.48549  00 36 03.732  +05 11 42.97  25.0w 15RE278   568  C~2lVP      
2016 11  03.49709  00 36 03.691  +05 11 42.77  25.2w 15RE278   568  C~2lVP      
2016 11  04.26545  00 36 00.827  +05 11 21.97  25.2w 15RE278   568  C~2lVP      
2016 11  04.32471  00 36 00.608  +05 11 20.51  25.0w 15RE278   568  C~2lVP      
2016 12  29.24332  00 34 28.762  +04 58 20.75  25.5w 15RE278   568  C~2lVP      
2016 12  29.26796  00 34 28.776  +04 58 20.46  25.5w 15RE278   568  C~2lVP      
2017 01  03.21350  00 34 33.745  +04 58 33.29  25.9w 15RE278   568  C~2lVP      
2017 01  03.23891  00 34 33.776  +04 58 33.46  25.3w 15RE278   568  C~2lVP      
2017 09  16.50467  00 45 16.623  +06 00 33.61  25.2w 15RE278   568  C~2lVP      
2017 09  17.40380  00 45 12.752  +06 00 07.83  24.8w 15RE278   568  C~2lVP      
2017 09  22.45810  00 44 50.499  +05 57 40.11  25.1w 15RE278   568  C~2lVP      
2017 11  22.36083  00 40 42.824  +05 29 04.43  24.9w 15RE278   568  C~2lVP      
2017 12  23.28786  00 40 00.297  +05 22 49.95  25.7w 15RE278   568  C~2lVP      
2017 12  23.30180  00 40 00.317  +05 22 49.79  25.1w 15RE278   568  C~2lVP      

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    -0.10       0.00    -0.00
     2   0.0574    264.46     0.23       8.95     0.03
     3   0.0710    233.85    -0.01      10.73    -0.09
     4   0.1339   -349.36     0.04      15.44    -0.02
     5   0.1341   -351.83     0.03      15.43    -0.06
     6   0.2103  -1879.15     0.13       4.61    -0.16
     7   0.2106  -1886.50    -0.13       4.82     0.07
     8   0.2107  -1889.25     0.09       4.62    -0.11
     9   0.2134  -1954.96     0.01       3.92     0.01
    10   0.2160  -2018.75     0.04       3.11     0.04
    11   0.2323  -2437.52    -0.16      -2.79     0.02
    12   0.2787  -3689.37     0.07     -26.72    -0.11
    13   0.2896  -3987.94    -0.10     -33.57     0.17
    14   0.2897  -3991.93    -0.04     -33.75     0.07
    15   0.3741  -6113.84     0.03    -108.61     0.02
    16   0.3743  -6117.07    -0.06    -108.83    -0.08
    17   0.3827  -6292.48    -0.12    -117.64     0.27
    18   0.4565  -7351.78     0.09    -208.04     0.12
    19   0.5247  -7415.29     0.12    -300.51    -0.08
    20   1.2044   3532.96    -0.08    -619.69     0.12
    21   1.2070   3471.29    -0.04    -620.67    -0.01
    22   1.2071   3468.67     0.08    -620.65     0.02
    23   1.2617   2060.55    -0.06    -644.42     0.10
    24   1.2646   1982.02     0.08    -646.17    -0.08
    25   1.3659   -668.07    -0.09    -725.29     0.03
    26   1.3659   -668.71    -0.00    -725.24     0.12
    27   1.3680   -716.23    -0.19    -727.55    -0.01
    28   1.3682   -719.81    -0.05    -727.60     0.06
    29   1.5185  -2288.28     0.01    -904.81     0.14
    30   1.5186  -2288.20    -0.16    -905.16    -0.13
    31   1.5322  -2214.88     0.08    -922.59    -0.39
    32   1.5322  -2214.39     0.13    -922.62    -0.34
    33   2.2338   8078.55     0.01   -1257.79     0.07
    34   2.2363   8015.22     0.01   -1259.04     0.01
    35   2.2501   7651.40    -0.09   -1265.78     0.07
    36   2.4169   3575.12     0.04   -1401.89     0.11
    37   2.5016   2843.98    -0.03   -1497.93     0.10
    38   2.5016   2844.20     0.21   -1498.20    -0.13

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.

15RE278    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.936    43.947    43.926
ecceobj         0.081     0.081     0.080
incobj          6.852     6.853     6.852
qmin           39.547    38.230    39.524
qmax           48.221    49.533    48.280
amean          43.725    43.727    43.726
amin           43.346    43.345    43.342
amax           44.138    44.150    44.130
emean           0.073     0.091     0.078
emin            0.049     0.057     0.058
emax            0.093     0.123     0.095
imean           7.803     7.263     7.729
imin            7.034     6.453     7.037
imax            8.619     8.618     8.467
excite_mean     0.155     0.157     0.156
fracstop        1.000     1.000     1.000
cjmean          3.070     3.069     3.069

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       185.6     161.7     189.1
kozaiamp        180.0     180.0     180.0