Orbit Fit and Astrometric record for 15RC278

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: 15RC278   
# Created Sun Sep 25 01:17:58 2022
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     37 observations of     37
# Arc:   6.28y
# First observation: 2015/06/23
#  Last observation: 2021/10/03
# Chi-squared of fit:     5.89 DOF:     68 RMS:  0.07
# Min/Max residuals:    -0.19    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.497762E-05  2.222969E-02 -1.074914E-06 -1.720301E-03  2.315966E-02 -1.334315E-03
# Covariance matrix:
  1.9740E-13 -2.7129E-14 -2.8870E-15  1.3088E-15  1.2228E-13 -1.0897E-13
 -2.7129E-14  1.4162E-13  5.2056E-15 -1.1245E-14  7.5370E-14  1.0708E-12
 -2.8870E-15  5.2056E-15  5.9858E-14 -1.7669E-14  7.4448E-16  4.4034E-14
  1.3088E-15 -1.1245E-14 -1.7669E-14  1.4660E-14 -6.2158E-15 -9.4187E-14
  1.2228E-13  7.5370E-14  7.4448E-16 -6.2158E-15  1.6421E-13  6.0652E-13
 -1.0897E-13  1.0708E-12  4.4034E-14 -9.4187E-14  6.0652E-13  8.9656E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.225927    7.230870    1.011715   -0.001976    0.096731  2457197.064548
# Heliocentric elements and errors
Epoch:              2457196.5000  =  2015/06/23
Mean Anomaly:          282.20827 +/-     0.025
Argument of Peri:      251.91548 +/-     0.033
Long of Asc Node:      201.41945 +/-     0.001
Inclination:             4.57825 +/-     0.000
Eccentricity:         0.08512108 +/-    0.0001
Semi-Major Axis:     43.56617153 +/-    0.0028
Time of Perihelion: 2479892.7156 +/-      10.9
Perihelion:          39.85777187 +/-    0.0064
Aphelion:            47.27457118 +/-    0.0066
Period (y)              287.5625 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.85318962 +/-    0.0008
Ecliptic Y            4.41818253 +/-    0.0001
Ecliptic Z            0.92380900 +/-    0.0000
Ecliptic XDOT        -0.00048536 +/-    0.0000
Ecliptic YDOT         0.00258147 +/-    0.0000
Ecliptic ZDOT        -0.00020663 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.09030501 +/-    0.0007
Geocenter to KBO     43.17857786 +/-    0.0008
# Hcoef:  7.68

The following table shows the complete astrometric record for 15RC278. 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 (15RC278) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.56377  00 24 37.016  +03 59 45.27  23.6r 15RC278   568  C~2lVP      
2015 07  19.56270  00 24 41.497  +04 00 35.18  24.0r 15RC278   568  C~2lVP      
2015 08  11.47114  00 24 00.728  +03 56 25.58  24.0r 15RC278   568  C~2lVP      
2015 08  11.51611  00 24 00.614  +03 56 24.90  23.8r 15RC278   568  C~2lVP      
2015 09  08.38042  00 22 26.402  +03 46 17.50  24.0r 15RC278   568  C~2lVP      
2015 09  08.48459  00 22 25.978  +03 46 14.81  24.0r 15RC278   568  C~2lVP      
2015 09  08.52681  00 22 25.796  +03 46 13.62  23.8r 15RC278   568  C~2lVP      
2015 09  09.50371  00 22 21.874  +03 45 47.91  24.1w 15RC278   568  C~2lVP      
2015 09  10.44466  00 22 18.062  +03 45 22.90  24.1w 15RC278   568  C~2lVP      
2015 09  16.42677  00 21 53.250  +03 42 39.34  24.3w 15RC278   568  C~2lVP      
2015 10  03.34014  00 20 40.296  +03 34 32.17  24.0r 15RC278   568  C~2lVP      
2015 10  03.35351  00 20 40.239  +03 34 31.84  24.1w 15RC278   568  C~2lVP      
2015 10  07.32360  00 20 23.087  +03 32 35.90  23.9r 15RC278   568  C~2lVP      
2015 10  07.37570  00 20 22.861  +03 32 34.52  24.0r 15RC278   568  C~2lVP      
2015 11  07.21826  00 18 24.126  +03 18 49.30  24.2w 15RC278   568  C~2lVP      
2015 11  07.27072  00 18 23.959  +03 18 48.10  24.4w 15RC278   568  C~2lVP      
2015 11  08.31542  00 18 20.683  +03 18 24.60  24.2w 15RC278   568  C~2lVP      
2015 11  10.34786  00 18 14.496  +03 17 39.68  24.3w 15RC278   568  C~2lVP      
2015 12  07.29452  00 17 20.360  +03 10 37.82  24.4w 15RC278   568  C~2lVP      
2016 01  01.22390  00 17 24.294  +03 09 50.61  24.2w 15RC278   568  C~2lVP      
2016 09  05.51068  00 27 32.393  +04 12 33.50  24.0w 15RC278   568  C~2lVP      
2016 09  07.45091  00 27 24.775  +04 11 43.73  24.2w 15RC278   568  C~2lVP      
2016 09  07.49637  00 27 24.590  +04 11 42.61  24.2w 15RC278   568  C~2lVP      
2016 09  26.52564  00 26 04.566  +04 02 54.25  24.1w 15RC278   568  C~2lVP      
2016 10  26.32563  00 23 59.511  +03 48 45.03  24.2r 15RC278   568  C~2lVP      
2016 10  26.39142  00 23 59.271  +03 48 43.34  24.0r 15RC278   568  C~2lVP      
2016 10  30.34056  00 23 44.591  +03 47 00.97  24.5w 15RC278   568  C~2lVP      
2016 11  03.29270  00 23 30.656  +03 45 22.87  24.2w 15RC278   568  C~2lVP      
2016 11  03.34512  00 23 30.476  +03 45 21.47  24.3w 15RC278   568  C~2lVP      
2016 12  24.26183  00 22 08.241  +03 34 20.47  24.3w 15RC278   568  C~2lVP      
2017 01  26.21860  00 23 12.286  +03 39 44.97  24.2w 15RC278   568  C~2lVP      
2017 09  15.44482  00 31 52.408  +04 33 37.77  23.9w 15RC278   568  C~2lVP      
2017 09  22.50999  00 31 22.398  +04 30 20.25  24.1w 15RC278   568  C~2lVP      
2017 12  23.30656  00 27 00.145  +03 59 14.45  24.1w 15RC278   568  C~2lVP      
2021 10  03.289150 00 50 50.591  +06 06 34.38  24.5G 15RC278   G37  C~55Wp      
2021 10  03.325930 00 50 50.425  +06 06 33.23        15RC278   G37  C~55Wp      
2021 10  03.362560 00 50 50.268  +06 06 32.47        15RC278   G37  C~55Wp      

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     0.05       0.00    -0.00
     2   0.0712      0.00     0.04       0.00     0.02
     3   0.1339      0.00    -0.11       0.00    -0.02
     4   0.1340      0.00    -0.02       0.00     0.04
     5   0.2103      0.00     0.01       0.00    -0.00
     6   0.2106      0.00     0.03       0.00     0.04
     7   0.2107      0.00    -0.11       0.00    -0.04
     8   0.2134      0.00     0.01       0.00     0.02
     9   0.2160      0.00    -0.02       0.00     0.04
    10   0.2323      0.00     0.03       0.00    -0.04
    11   0.2786      0.00     0.08       0.00    -0.10
    12   0.2787      0.00     0.11       0.00    -0.04
    13   0.2896      0.00     0.06       0.00    -0.03
    14   0.2897      0.00     0.09       0.00     0.11
    15   0.3741      0.00    -0.03       0.00    -0.02
    16   0.3743      0.00     0.02       0.00    -0.03
    17   0.3771      0.00     0.03       0.00     0.07
    18   0.3827      0.00    -0.05       0.00    -0.07
    19   0.4565      0.00    -0.05       0.00    -0.02
    20   0.5247      0.00    -0.03       0.00     0.01
    21   1.2045      0.00    -0.00       0.00     0.04
    22   1.2098      0.00     0.06       0.00     0.06
    23   1.2099      0.00     0.04       0.00     0.12
    24   1.2620      0.00    -0.09       0.00    -0.04
    25   1.3436      0.00    -0.19       0.00    -0.04
    26   1.3438      0.00     0.04       0.00     0.01
    27   1.3546      0.00    -0.04       0.00     0.02
    28   1.3654      0.00     0.06       0.00     0.01
    29   1.3656      0.00     0.12       0.00    -0.12
    30   1.5050      0.00     0.02       0.00    -0.04
    31   1.5952      0.00     0.23       0.00     0.04
    32   2.2310      0.00    -0.05       0.00     0.01
    33   2.2504      0.00    -0.04       0.00     0.14
    34   2.5017      0.00    -0.06       0.00     0.00
    35   6.2799      0.00    -0.03       0.00    -0.06
    36   6.2800      0.00    -0.04       0.00    -0.15
    37   6.2801      0.00     0.07       0.00     0.15

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.

15RC278    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.994    43.994    43.994
ecceobj         0.086     0.086     0.086
incobj          4.556     4.556     4.556
qmin           38.396    38.442    38.388
qmax           49.571    49.415    49.378
amean          43.746    43.746    43.747
amin           43.322    43.328    43.306
amax           44.194    44.173    44.170
emean           0.092     0.091     0.092
emin            0.067     0.065     0.067
emax            0.122     0.120     0.119
imean           5.574     5.585     5.579
imin            4.754     4.777     4.770
imax            6.483     6.501     6.492
excite_mean     0.134     0.134     0.134
fracstop        1.000     1.000     1.000
cjmean          3.077     3.077     3.077

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       184.4     183.7     184.2
kozaiamp        180.0     179.9     180.0