Orbit Fit and Astrometric record for 15RH278

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: 15RH278   
# Created Sat Nov 27 02:13:34 2021
# Orbit generated from Bernstein formalism
# Fitting     31 observations of     31
# Arc:   2.42y
# First observation: 2015/06/23
#  Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000050   0.010985   0.000002  -0.000959   0.015957   0.000000
# Chi-squared of fit:    17.00 DOF:     56 RMS:  0.13
# Min/Max residuals:    -0.27    0.37
# Exact a, adot, b, bdot, g, gdot:
  1.107645E-05  1.078402E-02 -1.130842E-06 -9.420557E-04  1.576922E-02 -4.008644E-03
# Covariance matrix:
  2.3976E-13  2.1704E-14  2.2008E-15 -1.3435E-14  2.1905E-13  6.8940E-12
  2.1704E-14  1.5122E-13  2.4356E-15 -1.2751E-14  1.5411E-13  6.4959E-12
  2.2008E-15  2.4356E-15  1.0000E-13 -6.9052E-14  5.4323E-15  4.1608E-13
 -1.3435E-14 -1.2751E-14 -6.9052E-14  9.0331E-14 -2.9042E-14 -1.9023E-12
  2.1905E-13  1.5411E-13  5.4323E-15 -2.9042E-14  3.6882E-13  1.4811E-11
  6.8940E-12  6.4959E-12  4.1608E-13 -1.9023E-12  1.4811E-11  9.6189E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.476212    6.637491    1.012672   -0.000622    0.086156  2457197.071038
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:          268.87142 +/-     0.385
Argument of Peri:      306.16355 +/-     0.208
Long of Asc Node:      191.12528 +/-     0.002
Inclination:             5.05068 +/-     0.002
Eccentricity:         0.38839994 +/-    0.0016
Semi-Major Axis:     55.35625218 +/-    0.0821
Time of Perihelion: 2495270.8145 +/-     136.7
Perihelion:          33.85588692 +/-    0.1033
Aphelion:            76.85661744 +/-    0.1454
Period (y)              411.8682 +/-      0.92
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           63.01544159 +/-    0.0024
Ecliptic Y            6.31437098 +/-    0.0003
Ecliptic Z            0.52704888 +/-    0.0000
Ecliptic XDOT        -0.00090882 +/-    0.0000
Ecliptic YDOT         0.00177325 +/-    0.0000
Ecliptic ZDOT        -0.00016927 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   63.33320567 +/-    0.0024
Geocenter to KBO     63.41468427 +/-    0.0024
# Hcoef:  7.14

The following table shows the complete astrometric record for 15RH278. 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 (15RH278) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.57026  00 23 37.310  +03 04 21.48  26.0r 15RH278   568  C~2lVQ      
2015 07  14.58775  00 23 39.132  +03 04 31.22  25.8r 15RH278   568  C~2lVQ      
2015 07  19.56683  00 23 35.900  +03 04 09.85  24.9r 15RH278   568  C~2lVQ      
2015 08  11.46704  00 23 04.413  +03 00 43.38  25.3r 15RH278   568  C~2lVQ      
2015 09  08.37633  00 21 56.097  +02 53 13.64  25.2r 15RH278   568  C~2lVQ      
2015 09  08.48053  00 21 55.786  +02 53 11.62  24.8r 15RH278   568  C~2lVQ      
2015 09  08.52274  00 21 55.672  +02 53 10.85  25.0r 15RH278   568  C~2lVQ      
2015 09  09.49961  00 21 52.866  +02 52 52.24  25.5w 15RH278   568  C~2lVQ      
2015 09  10.44054  00 21 50.139  +02 52 34.21  25.3w 15RH278   568  C~2lVQ      
2015 09  16.42148  00 21 32.413  +02 50 37.34  24.9w 15RH278   568  C~2lVQ      
2015 10  03.33607  00 20 40.499  +02 44 51.94  25.0r 15RH278   568  C~2lVQ      
2015 10  03.34821  00 20 40.456  +02 44 51.76  24.9w 15RH278   568  C~2lVQ      
2015 10  03.40227  00 20 40.307  +02 44 50.60  25.6w 15RH278   568  C~2lVQ      
2015 10  07.31809  00 20 28.275  +02 43 30.35  25.7r 15RH278   568  C~2lVQ      
2015 11  05.24318  00 19 07.504  +02 34 25.18  25.2w 15RH278   568  C~2lVQ      
2015 11  07.21298  00 19 02.892  +02 33 53.47  25.6w 15RH278   568  C~2lVQ      
2015 11  07.26546  00 19 02.771  +02 33 52.92  25.5w 15RH278   568  C~2lVQ      
2015 12  07.29979  00 18 14.598  +02 28 11.38  25.6w 15RH278   568  C~2lVQ      
2016 01  01.21869  00 18 13.009  +02 27 34.57  25.2w 15RH278   568  C~2lVQ      
2016 09  05.55294  00 24 25.633  +03 05 43.73  25.1w 15RH278   568  C~2lVQ      
2016 09  07.49232  00 24 20.146  +03 05 07.21  25.3w 15RH278   568  C~2lVQ      
2016 09  07.53863  00 24 20.011  +03 05 06.52  25.0w 15RH278   568  C~2lVQ      
2016 11  03.22971  00 21 33.233  +02 46 32.81  24.7r 15RH278   568  C~2lVQ      
2016 12  24.23886  00 20 30.304  +02 38 56.99  25.6w 15RH278   568  C~2lVQ      
2016 12  24.25172  00 20 30.344  +02 38 57.06  25.2w 15RH278   568  C~2lVQ      
2017 01  02.23941  00 20 34.729  +02 39 16.77  25.6w 15RH278   568  C~2lVQ      
2017 01  26.22433  00 21 09.882  +02 42 40.22  25.0w 15RH278   568  C~2lVQ      
2017 01  27.25763  00 21 12.096  +02 42 53.75  25.3w 15RH278   568  C~2lVQ      
2017 09  15.45412  00 26 22.462  +03 14 33.89  24.9w 15RH278   568  C~2lVQ      
2017 09  22.51940  00 26 00.880  +03 12 11.08  24.9w 15RH278   568  C~2lVQ      
2017 11  22.37572  00 23 17.327  +02 53 50.96  25.6w 15RH278   568  C~2lVQ      

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     0.04
     2   0.0575     28.92     0.11      -1.85    -0.18
     3   0.0712    -24.00    -0.07      -2.32    -0.18
     4   0.1339   -538.84    -0.00      -5.29     0.15
     5   0.2103  -1656.70    -0.01     -13.11     0.13
     6   0.2106  -1661.77    -0.12     -13.12     0.13
     7   0.2107  -1663.65     0.02     -13.15     0.10
     8   0.2134  -1709.62     0.06     -13.59     0.03
     9   0.2159  -1754.28     0.00     -13.97     0.04
    10   0.2323  -2044.43    -0.21     -16.10     0.37
    11   0.2786  -2895.54    -0.06     -25.08    -0.05
    12   0.2787  -2896.20    -0.10     -24.99     0.04
    13   0.2788  -2898.71     0.16     -25.17    -0.13
    14   0.2895  -3096.07     0.28     -27.41    -0.04
    15   0.3687  -4423.74    -0.12     -48.11    -0.12
    16   0.3741  -4499.79    -0.03     -49.81    -0.20
    17   0.3743  -4501.68     0.11     -49.59     0.04
    18   0.4565  -5300.28    -0.01     -76.79    -0.08
    19   0.5247  -5336.77    -0.04    -101.14    -0.06
    20   1.2046    697.29    -0.07    -210.79     0.11
    21   1.2099    607.36     0.03    -211.83    -0.15
    22   1.2100    605.23     0.10    -211.66     0.02
    23   1.3653  -2130.02     0.22    -245.50    -0.11
    24   1.5049  -3176.51    -0.27    -290.46    -0.09
    25   1.5049  -3175.93     0.28    -290.63    -0.26
    26   1.5296  -3107.78     0.03    -298.58     0.20
    27   1.5952  -2543.45    -0.00    -320.48     0.04
    28   1.5980  -2507.63    -0.15    -321.20     0.22
    29   2.2310   2514.23     0.06    -415.49     0.01
    30   2.2504   2160.84    -0.05    -418.97    -0.06
    31   2.4170   -524.41    -0.08    -460.60     0.06

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.

15RH278    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        55.882    56.128    55.645
ecceobj         0.383     0.388     0.378
incobj          5.012     5.012     5.012
qmin           33.366    33.451    33.492
qmax           78.725    79.245    78.745
amean          55.462    55.464    55.462
amin           54.787    54.574    54.749
amax           56.336    56.622    56.387
emean           0.386     0.386     0.384
emin            0.375     0.375     0.372
emax            0.398     0.400     0.397
imean           4.531     5.246     4.493
imin            4.082     5.046     4.104
imax            5.133     5.484     5.122
excite_mean     0.394     0.397     0.392
fracstop        1.000     1.000     1.000
cjmean          3.039     3.036     3.041

libcent 0       180.1     180.3     180.3
libamp  0        76.2     147.6      82.4
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       264.2     154.5     252.8
kozaiamp        180.0     180.0     180.0