Orbit Fit and Astrometric record for 13RV155

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: 13RV155   
# Created Tue Nov 30 02:11:53 2021
# Orbit generated from Bernstein formalism
# Fitting     22 observations of     22
# Arc:   4.15y
# First observation: 2013/09/02
#  Last observation: 2017/10/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000416   0.023818  -0.000098   0.012851   0.026657   0.000000
# Chi-squared of fit:     3.05 DOF:     38 RMS:  0.07
# Min/Max residuals:    -0.12    0.14
# Exact a, adot, b, bdot, g, gdot:
  1.368369E-05  2.378455E-02  8.304555E-06  1.279309E-02  2.623315E-02 -7.700365E-04
# Covariance matrix:
  5.4041E-13  6.9404E-14 -3.9174E-14  1.0360E-13  4.4361E-13  1.8869E-12
  6.9404E-14  2.9472E-13 -6.8754E-14  1.8243E-13  3.1092E-13  3.3359E-12
 -3.9174E-14 -6.8754E-14  2.3597E-13 -1.0724E-13 -8.5994E-14 -8.5447E-13
  1.0360E-13  1.8243E-13 -1.0724E-13  1.4814E-13  2.2779E-13  2.2669E-12
  4.4361E-13  3.1092E-13 -8.5994E-14  2.2779E-13  6.9089E-13  4.1567E-12
  1.8869E-12  3.3359E-12 -8.5447E-13  2.2669E-12  4.1567E-12  4.1443E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.722846    0.711752    0.363313   -0.011806   -0.942412  2456537.758808
# Heliocentric elements and errors
Epoch:              2456530.5000  =  2013/08/26
Mean Anomaly:          323.99150 +/-     0.141
Argument of Peri:       38.97851 +/-     0.165
Long of Asc Node:        1.49280 +/-     0.000
Inclination:            28.29623 +/-     0.000
Eccentricity:         0.06247487 +/-    0.0002
Semi-Major Axis:     41.08061664 +/-    0.0047
Time of Perihelion: 2466150.0854 +/-      37.7
Perihelion:          38.51411066 +/-    0.0089
Aphelion:            43.64712262 +/-    0.0092
Period (y)              263.3077 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.06040679 +/-    0.0012
Ecliptic Y            0.12491272 +/-    0.0000
Ecliptic Z           -0.48059814 +/-    0.0000
Ecliptic XDOT        -0.00010053 +/-    0.0000
Ecliptic YDOT         0.00248023 +/-    0.0000
Ecliptic ZDOT         0.00133621 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.06356303 +/-    0.0012
Geocenter to KBO     38.11970128 +/-    0.0012
# Hcoef:  7.06

The following table shows the complete astrometric record for 13RV155. 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 (13RV155) followed by the observatory code and reference code for the source of the astrometry.

2013 09  02.25803  00 03 45.729  -00 22 48.34  23.6g 13RV155   W84  C~52RL      
2013 10  12.11906  00 00 29.020  -00 38 53.63  22.9i 13RV155   W84  C~52RL      
2013 10  12.12044  00 00 29.010  -00 38 53.61  23.0z 13RV155   W84  C~52RL      
2013 11  22.06122  23 58 00.079  -00 49 13.75  23.4r 13RV155   W84  C~52RL      
2013 11  22.08831  23 58 00.022  -00 49 13.98  22.6i 13RV155   W84  C~52RL      
2013 11  23.08855  23 57 57.911  -00 49 19.03  22.9r 13RV155   W84  C~52RL      
2014 10  28.18397  00 03 08.148  +00 28 24.64  23.0r 13RV155   W84  C~52RL      
2014 11  15.10012  00 02 05.428  +00 23 54.41  22.8z 13RV155   W84  C~52RL      
2015 11  07.07175  00 06 20.225  +01 38 18.10  23.1r 13RV155   W84  C~52RL      
2016 09  11.22732  00 14 33.282  +03 12 44.58  22.6i 13RV155   W84  C~52RL      
2016 12  05.07480  00 08 57.764  +02 45 54.57  22.5i 13RV155   W84  C~52RL      
2016 12  05.07617  00 08 57.756  +02 45 54.53  22.2z 13RV155   W84  C~52RL      
2016 12  05.07754  00 08 57.768  +02 45 54.43  22.8r 13RV155   W84  C~52RL      
2017 08  22.31219  00 19 55.279  +04 32 23.13  22.9r 13RV155   W84  C~52RL      
2017 08  28.26478  00 19 30.677  +04 30 43.79  23.1i 13RV155   W84  C~52RL      
2017 08  28.26615  00 19 30.673  +04 30 43.69  23.8g 13RV155   W84  C~52RL      
2017 08  28.26753  00 19 30.675  +04 30 43.85  22.9r 13RV155   W84  C~52RL      
2017 09  27.17044  00 17 06.670  +04 19 40.68  22.5z 13RV155   W84  C~52RL      
2017 10  22.17470  00 15 03.672  +04 09 21.66  23.4r 13RV155   W84  C~52RL      
2017 10  22.17745  00 15 03.662  +04 09 21.64  23.9g 13RV155   W84  C~52RL      
2017 10  27.15476  00 14 41.533  +04 07 28.31  22.1z 13RV155   W84  C~52RL      
2017 10  28.16408  00 14 37.193  +04 07 06.06  22.1z 13RV155   W84  C~52RL      

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     0.13       0.00    -0.12
     2   0.1091  -3091.27    -0.02     287.78    -0.08
     3   0.1091  -3091.40    -0.05     287.86    -0.02
     4   0.2212  -5388.61     0.04     607.06     0.14
     5   0.2213  -5389.48     0.05     607.19     0.04
     6   0.2240  -5420.57    -0.04     615.14     0.07
     7   1.1524    705.14    -0.10    3043.89    -0.04
     8   1.2015   -265.61    -0.07    3170.17     0.02
     9   2.1788   5018.38    -0.05    5747.99     0.05
    10   3.0252  14077.98     0.02    8025.32    -0.11
    11   3.2575   8805.85     0.06    8538.82     0.04
    12   3.2575   8805.72    -0.04    8538.83     0.05
    13   3.2575   8805.85     0.11    8538.66    -0.12
    14   3.9700  20451.26    -0.00   10530.20     0.01
    15   3.9863  20070.09    -0.09   10583.89     0.03
    16   3.9863  20069.99    -0.09   10583.82    -0.05
    17   3.9863  20070.08     0.09   10583.95     0.07
    18   4.0682  17808.46     0.03   10823.43     0.01
    19   4.1367  15858.59     0.00   10980.61    -0.01
    20   4.1367  15858.45     0.06   10980.65     0.01
    21   4.1503  15507.12    -0.00   11007.25     0.02
    22   4.1531  15438.21    -0.05   11012.45    -0.00

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.

13RV155    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.263    41.276    41.251
ecceobj         0.065     0.066     0.065
incobj         28.218    28.217    28.218
qmin           37.778    37.721    37.907
qmax           44.611    44.638    44.523
amean          41.105    41.121    41.090
amin           40.788    40.786    40.782
amax           41.419    41.455    41.422
emean           0.063     0.064     0.062
emin            0.051     0.050     0.050
emax            0.078     0.077     0.075
imean          28.543    28.541    28.543
imin           28.183    28.179    28.186
imax           28.880    28.874    28.881
excite_mean     0.482     0.482     0.482
fracstop        1.000     1.000     1.000
cjmean          2.781     2.781     2.781

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       173.9     179.4     171.7
kozaiamp        180.0     180.0     179.9