Orbit Fit and Astrometric record for 15RJ278

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: 15RJ278   
# Created Tue Apr 23 01:10:44 2019
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   31
# Arc:   2.50y
# First observation: 2015/06/23
#  Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000062   0.017207   0.000005   0.001536   0.020783   0.000000
# Chi-squared of fit:     6.79 DOF:   56 RMS:  0.08
# Min/Max residuals:    -0.20    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.313149E-05  1.686729E-02  1.186275E-06  1.516585E-03  2.047504E-02  6.159019E-04
# Covariance matrix:
  1.9862E-13  4.1651E-14 -5.7345E-15  1.3973E-14  1.9668E-13  4.0544E-12
  4.1651E-14  3.0271E-13 -1.2545E-14  3.6483E-14  3.1425E-13  1.0576E-11
 -5.7345E-15 -1.2545E-14  1.0964E-13 -7.6263E-14 -1.7254E-14 -6.7099E-13
  1.3973E-14  3.6483E-14 -7.6263E-14  9.4045E-14  4.7416E-14  2.1073E-12
  1.9668E-13  3.1425E-13 -1.7254E-14  4.7416E-14  4.8636E-13  1.3749E-11
  4.0544E-12  1.0576E-11 -6.7099E-13  2.1073E-12  1.3749E-11  6.1061E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.773602    8.089056    1.010119   -0.001422    0.112194  2457197.046308
# Heliocentric elements and errors
Epoch:              2457190.5000  =  2015/06/17
Mean Anomaly:          174.06093 +/-     0.436
Argument of Peri:      192.89265 +/-     0.441
Long of Asc Node:      358.39116 +/-     0.002
Inclination:             5.22489 +/-     0.001
Eccentricity:         0.15935280 +/-    0.0001
Semi-Major Axis:     42.05913187 +/-    0.0026
Time of Perihelion: 2409019.2768 +/-     120.6
Perihelion:          35.35689163 +/-    0.0041
Aphelion:            48.76137210 +/-    0.0045
Period (y)              272.7713 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           48.37715454 +/-    0.0016
Ecliptic Y            5.85637185 +/-    0.0002
Ecliptic Z            0.65952987 +/-    0.0000
Ecliptic XDOT        -0.00024101 +/-    0.0000
Ecliptic YDOT         0.00223796 +/-    0.0000
Ecliptic ZDOT         0.00020395 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.73480432 +/-    0.0016
Geocenter to KBO     48.83994584 +/-    0.0017
# Hcoef:  7.77

The following table shows the complete astrometric record for 15RJ278. 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 (15RJ278) followed by the observatory code and reference code for the source of the astrometry.

2015 06  23.54553  00 28 29.641  +03 55 10.10  24.5r 15RJ278   568  C~2lVQ      
2015 07  14.59595  00 28 35.381  +03 56 29.02  24.5r 15RJ278   568  C~2lVQ      
2015 07  19.57506  00 28 31.970  +03 56 16.85  25.4r 15RJ278   568  C~2lVQ      
2015 08  11.48002  00 27 54.288  +03 52 57.77  24.3r 15RJ278   568  C~2lVQ      
2015 08  11.52446  00 27 54.192  +03 52 57.35  25.1r 15RJ278   568  C~2lVQ      
2015 09  08.38855  00 26 28.374  +03 44 29.33  25.1r 15RJ278   568  C~2lVQ      
2015 09  08.49278  00 26 27.995  +03 44 27.02  24.1r 15RJ278   568  C~2lVQ      
2015 09  08.53500  00 26 27.833  +03 44 26.13  24.1r 15RJ278   568  C~2lVQ      
2015 09  09.51188  00 26 24.260  +03 44 04.36  24.4w 15RJ278   568  C~2lVQ      
2015 09  10.45287  00 26 20.790  +03 43 43.25  25.0w 15RJ278   568  C~2lVQ      
2015 09  16.43732  00 25 58.179  +03 41 25.27  24.9w 15RJ278   568  C~2lVQ      
2015 10  03.36404  00 24 51.482  +03 34 33.27  24.5w 15RJ278   568  C~2lVQ      
2015 10  07.33325  00 24 35.751  +03 32 55.34  24.1r 15RJ278   568  C~2lVQ      
2015 10  07.39133  00 24 35.512  +03 32 54.05  24.3r 15RJ278   568  C~2lVQ      
2015 11  10.35840  00 22 36.147  +03 20 20.40  24.7w 15RJ278   568  C~2lVQ      
2015 12  07.30512  00 21 42.487  +03 14 33.77  24.6w 15RJ278   568  C~2lVQ      
2016 09  05.47023  00 30 05.341  +04 13 29.12  24.5w 15RJ278   568  C~2lVQ      
2016 09  06.42437  00 30 01.934  +04 13 08.50  25.1w 15RJ278   568  C~2lVQ      
2016 09  06.46487  00 30 01.794  +04 13 07.51  25.2w 15RJ278   568  C~2lVQ      
2016 09  25.34339  00 28 49.852  +04 05 49.21  24.7w 15RJ278   568  C~2lVQ      
2016 09  25.44037  00 28 49.456  +04 05 46.99  24.5w 15RJ278   568  C~2lVQ      
2016 09  26.42319  00 28 45.559  +04 05 22.83  24.7w 15RJ278   568  C~2lVQ      
2016 10  30.34865  00 26 36.576  +03 51 55.80  24.0w 15RJ278   568  C~2lVQ      
2016 11  03.30427  00 26 23.583  +03 50 33.18  25.5w 15RJ278   568  C~2lVQ      
2016 11  03.35669  00 26 23.422  +03 50 32.07  24.2w 15RJ278   568  C~2lVQ      
2016 12  24.26183  00 25 01.064  +03 41 34.75  24.7w 15RJ278   568  C~2lVQ      
2017 01  02.24972  00 25 06.449  +03 42 06.39  24.9w 15RJ278   568  C~2lVQ      
2017 01  29.22410  00 25 59.504  +03 47 40.96  24.6w 15RJ278   568  C~2lVQ      
2017 09  15.44482  00 32 58.916  +04 38 02.06  24.8w 15RJ278   568  C~2lVQ      
2017 09  22.50999  00 32 31.570  +04 35 15.83  24.4w 15RJ278   568  C~2lVQ      
2017 12  23.30656  00 28 26.372  +04 09 18.78        15RJ278   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    -0.02       0.00    -0.00
  2   0.0576    110.07     0.02      38.61     0.08
  3   0.0713     58.37    -0.01      47.57     0.01
  4   0.1340   -538.33    -0.04      87.31     0.04
  5   0.1341   -539.82     0.21      87.49     0.13
  6   0.2104  -1920.51    -0.06     128.27     0.04
  7   0.2107  -1926.63     0.05     128.39    -0.02
  8   0.2108  -1929.21    -0.00     128.54     0.05
  9   0.2135  -1986.95     0.03     129.68    -0.02
 10   0.2160  -2043.01     0.01     130.82    -0.03
 11   0.2324  -2408.48    -0.01     137.90    -0.06
 12   0.2788  -3488.69    -0.01     154.45    -0.16
 13   0.2896  -3743.80    -0.07     157.71    -0.06
 14   0.2898  -3747.60    -0.09     157.94     0.11
 15   0.3828  -5688.21    -0.12     173.68     0.14
 16   0.4566  -6564.13     0.16     173.93    -0.06
 17   1.2044   1749.36     0.06     444.99     0.13
 18   1.2071   1694.39    -0.11     446.13     0.02
 19   1.2072   1692.07    -0.05     446.05    -0.14
 20   1.2589    530.13     0.01     467.86    -0.10
 21   1.2591    523.81    -0.00     468.16     0.07
 22   1.2618    460.70    -0.02     468.97    -0.06
 23   1.3547  -1631.25     0.08     489.88     0.03
 24   1.3655  -1842.54    -0.07     490.85     0.04
 25   1.3657  -1845.20     0.06     490.78    -0.07
 26   1.5050  -3190.11     0.06     484.81    -0.12
 27   1.5296  -3103.54    -0.01     481.98    -0.11
 28   1.6035  -2241.69    -0.07     475.15    -0.20
 29   2.2311   4716.31    -0.02     776.62     0.14
 30   2.2504   4274.81     0.04     784.65     0.17
 31   2.5017    290.08     0.02     799.07     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.

15RJ278    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.407    42.416    42.399
ecceobj         0.150     0.150     0.150
incobj          5.195     5.195     5.195
qmin           34.883    34.616    35.103
qmax           50.479    50.672    50.363
amean          42.328    42.328    42.328
amin           41.818    41.797    41.798
amax           42.906    42.903    42.928
emean           0.157     0.158     0.155
emin            0.136     0.137     0.137
emax            0.177     0.183     0.174
imean           5.576     5.322     5.195
imin            3.963     4.091     2.899
imax            7.163     6.785     6.788
excite_mean     0.185     0.184     0.181
fracstop        1.000     1.000     1.000
cjmean          3.040     3.041     3.043

libcent 0       179.0     180.5     181.6
libamp  0       142.5     137.9     144.2
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       176.4     190.1     189.4
kozaiamp        180.0     180.0     180.0