Orbit Fit and Astrometric record for 19GG185

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: 19GG185   
# Created Tue Apr  1 01:11:13 2025
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   2.23y
# First observation: 2017/03/06
#  Last observation: 2019/05/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000148   0.027329  -0.000006  -0.001542   0.025759   0.000000
# Chi-squared of fit:     5.82 DOF:     20 RMS:  0.12
# Min/Max residuals:    -0.24    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.698748E-05  2.702939E-02 -1.055212E-06 -1.531126E-03  2.529330E-02 -3.628493E-03
# Covariance matrix:
  1.2094E-12  1.9607E-12 -1.2568E-14 -1.4564E-13  2.1025E-12  4.6181E-11
  1.9607E-12  8.2188E-12 -3.2476E-14 -5.4881E-13  6.8631E-12  1.7300E-10
 -1.2568E-14 -3.2476E-14  5.2015E-13 -2.4379E-13 -3.7289E-14 -6.4840E-13
 -1.4564E-13 -5.4881E-13 -2.4379E-13  1.8534E-13 -4.5514E-13 -1.1821E-11
  2.1025E-12  6.8631E-12 -3.7289E-14 -4.5514E-13  6.4289E-12  1.4419E-10
  4.6181E-11  1.7300E-10 -6.4840E-13 -1.1821E-11  1.4419E-10  3.7229E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.919620 -161.242528    0.540271    0.114463   -0.821888  2457819.108116
# Heliocentric elements and errors
Epoch:              2457810.5000  =  2017/02/26
Mean Anomaly:          332.40681 +/-     0.224
Argument of Peri:      157.00086 +/-     0.442
Long of Asc Node:       85.75839 +/-     0.006
Inclination:             8.37002 +/-     0.000
Eccentricity:         0.24456766 +/-    0.0019
Semi-Major Axis:     50.36109791 +/-    0.0554
Time of Perihelion: 2467816.0409 +/-      79.4
Perihelion:          38.04440200 +/-    0.1041
Aphelion:            62.67779382 +/-    0.1177
Period (y)              357.3971 +/-      0.59
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.04173017 +/-    0.0037
Ecliptic Y          -12.35237753 +/-    0.0012
Ecliptic Z            5.44742064 +/-    0.0005
Ecliptic XDOT         0.00129083 +/-    0.0000
Ecliptic YDOT        -0.00265926 +/-    0.0000
Ecliptic ZDOT        -0.00021834 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.36618457 +/-    0.0035
Geocenter to KBO     39.53615851 +/-    0.0040
# Hcoef:  8.69

The following table shows the complete astrometric record for 19GG185. 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 (19GG185) followed by the observatory code and reference code for the source of the astrometry.

2017 03  06.607315 13 21 13.26   -00 00 57.0         19GG185   T09  C~85KE      
2017 04  01.496087 13 19 25.99   +00 11 35.7         19GG185   T09  C~85KE      
2017 04  29.341463 13 17 18.93   +00 23 27.9         19GG185   T09  C~85KE      
2019 03  30.629084 13 30 58.37   -01 10 14.4         19GG185   T09  C~85KE      
2019 04  06.542914 13 30 26.87   -01 06 58.0         19GG185   T09  C~85KE      
2019 04  06.574187 13 30 26.72   -01 06 57.2         19GG185   T09  C~85KE      
2019 04  07.42061  13 30 22.80   -01 06 33.1   24.1i 19GG185   T09  C~85KE      
2019 04  07.46130  13 30 22.61   -01 06 32.1   24.6i 19GG185   T09  C~85KE      
2019 04  07.52052  13 30 22.33   -01 06 30.5   24.6i 19GG185   T09  C~85KE      
2019 05  09.504048 13 27 57.19   -00 53 51.2         19GG185   T09  C~85KE      
2019 05  28.30153  13 26 47.89   -00 49 35.6   24.5z 19GG185   T09  C~85KE      
2019 05  28.34495  13 26 47.75   -00 49 35.1   24.4z 19GG185   T09  C~85KE      
2019 05  28.39613  13 26 47.59   -00 49 34.6   24.7z 19GG185   T09  C~85KE      

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     0.02
     2   0.0709  -1774.10     0.04      91.23     0.01
     3   0.1471  -3808.26    -0.02      33.19    -0.05
     4   2.0644   9702.70     0.18    -547.58    -0.05
     5   2.0833   9190.04     0.16    -543.33     0.00
     6   2.0834   9187.65     0.15    -543.43    -0.09
     7   2.0857   9123.98    -0.24    -543.22     0.24
     8   2.0858   9120.96    -0.16    -543.37     0.13
     9   2.0860   9116.46    -0.15    -543.46     0.08
    10   2.1736   6810.52     0.06    -659.21    -0.23
    11   2.2250   5750.39     0.01    -813.71    -0.12
    12   2.2252   5748.26    -0.03    -814.04    -0.01
    13   2.2253   5745.84     0.02    -814.48     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.

19GG185    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        49.583    49.692    49.479
ecceobj         0.235     0.239     0.230
incobj          8.374     8.375     8.374
qmin           37.378    37.288    37.525
qmax           62.987    63.403    62.536
amean          49.923    50.042    49.821
amin           49.445    49.546    49.345
amax           50.492    50.640    50.381
emean           0.236     0.240     0.232
emin            0.224     0.227     0.220
emax            0.249     0.253     0.243
imean           6.512     6.480     6.516
imin            6.024     5.980     6.023
imax            7.055     6.996     7.057
excite_mean     0.262     0.265     0.258
fracstop        1.000     1.000     1.000
cjmean          3.089     3.088     3.090

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       182.7     180.6     182.8
kozaiamp        180.0     180.0     180.0