Orbit Fit and Astrometric record for 19GP186

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: 19GP186   
# Created Tue Apr  1 01:11:14 2025
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:  83.89d
# First observation: 2019/01/11
#  Last observation: 2019/04/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.018479   0.000001   0.009685   0.020786   0.000000
# Chi-squared of fit:     1.43 DOF:     16 RMS:  0.06
# Min/Max residuals:    -0.16    0.10
# Exact a, adot, b, bdot, g, gdot:
  1.331122E-05  1.762622E-02  7.502670E-06  9.595222E-03  2.049725E-02 -1.000865E-02
# Covariance matrix:
  4.0030E-13  4.1713E-11  6.2763E-14  2.5112E-12  1.0841E-11  8.1316E-10
  4.1713E-11  5.4407E-08  8.1912E-11  2.3743E-09  1.2159E-08  6.5637E-07
  6.2763E-14  8.1912E-11  3.7202E-13  2.2170E-12  1.8290E-11  9.8326E-10
  2.5112E-12  2.3743E-09  2.2170E-12  1.2265E-10  5.3732E-10  3.0229E-08
  1.0841E-11  1.2159E-08  1.8290E-11  5.3732E-10  2.7308E-09  1.4977E-07
  8.1316E-10  6.5637E-07  9.8326E-10  3.0229E-08  1.4977E-07  8.6536E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.871760  164.265763    0.797496   -0.060051   -0.584765  2458495.059341
# Heliocentric elements and errors
Epoch:              2458490.5000  =  2019/01/07
Mean Anomaly:          344.27507 +/-     7.809
Argument of Peri:       61.53207 +/-     6.202
Long of Asc Node:      173.80092 +/-     0.153
Inclination:            29.23988 +/-     0.361
Eccentricity:         0.63965223 +/-    0.1587
Semi-Major Axis:     98.77203004 +/-   32.5558
Time of Perihelion: 2474152.0805 +/-     730.6
Perihelion:          35.59228063 +/-   19.5819
Aphelion:           161.95177945 +/-   55.6351
Period (y)              981.6557 +/-    485.34
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -47.06152348 +/-    0.1191
Ecliptic Y           14.07940082 +/-    0.0336
Ecliptic Z           -4.99069087 +/-    0.0127
Ecliptic XDOT         0.00052329 +/-    0.0004
Ecliptic YDOT        -0.00259311 +/-    0.0001
Ecliptic ZDOT         0.00141149 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.37533306 +/-    0.1139
Geocenter to KBO     48.78703194 +/-    0.1244
# Hcoef:  7.66

The following table shows the complete astrometric record for 19GP186. 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 (19GP186) followed by the observatory code and reference code for the source of the astrometry.

2019 01  11.55854  10 52 59.76   +00 46 12.5   24.8z 19GP186   T09  C~870l      
2019 01  11.58440  10 52 59.70   +00 46 12.9   24.2z 19GP186   T09  C~870l      
2019 01  11.59806  10 52 59.67   +00 46 13.0   24.1z 19GP186   T09  C~870l      
2019 01  11.62511  10 52 59.61   +00 46 13.4   24.0z 19GP186   T09  C~870l      
2019 02  04.52284  10 51 53.39   +00 53 16.1   25.3g 19GP186   T09  C~870l      
2019 02  04.52563  10 51 53.38   +00 53 16.4   25.1g 19GP186   T09  C~870l      
2019 02  04.54623  10 51 53.31   +00 53 16.9   25.3g 19GP186   T09  C~870l      
2019 02  04.55689  10 51 53.27   +00 53 17.1   25.1g 19GP186   T09  C~870l      
2019 04  05.40376  10 48 18.24   +01 21 27.2   24.8r 19GP186   T09  C~870l      
2019 04  05.44374  10 48 18.12   +01 21 28.2   24.2r 19GP186   T09  C~870l      
2019 04  05.44583  10 48 18.11   +01 21 28.5   24.5r 19GP186   T09  C~870l      

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     0.06       0.00    -0.02
     2   0.0001     -0.98    -0.02       0.02     0.03
     3   0.0001     -1.44     0.00      -0.05    -0.03
     4   0.0002     -2.42    -0.04      -0.03     0.02
     5   0.0656  -1081.79     0.09      10.19    -0.16
     6   0.0656  -1082.04    -0.01      10.41     0.05
     7   0.0657  -1083.20    -0.02      10.47     0.09
     8   0.0657  -1083.83    -0.06      10.42     0.03
     9   0.2296  -4710.78    -0.02     337.75     0.01
    10   0.2297  -4712.82     0.08     337.99    -0.11
    11   0.2297  -4713.08    -0.06     338.21     0.10

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.

19GP186    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0