Orbit Fit and Astrometric record for 19GV184

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: 19GV184   
# Created Tue Apr  1 01:11:13 2025
# Orbit generated from Bernstein formalism
# Fitting     19 observations of     19
# Arc:   1.05y
# First observation: 2018/03/18
#  Last observation: 2019/04/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.000012   0.026624  -0.000008   0.005253   0.024478   0.000000
# Chi-squared of fit:    12.27 DOF:     32 RMS:  0.14
# Min/Max residuals:    -0.30    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.701571E-05  2.637307E-02  3.257655E-06  5.203180E-03  2.452131E-02 -1.041835E-02
# Covariance matrix:
  1.3606E-12  3.3105E-12 -5.5721E-14  9.6051E-13  3.1747E-12  1.7802E-10
  3.3105E-12  1.6978E-11 -2.4907E-13  4.0703E-12  1.2010E-11  7.5356E-10
 -5.5721E-14 -2.4907E-13  3.4934E-13 -4.2839E-13 -1.8189E-13 -1.1397E-11
  9.6051E-13  4.0703E-12 -4.2839E-13  1.5195E-12  3.0993E-12  1.8878E-10
  3.1747E-12  1.2010E-11 -1.8189E-13  3.0993E-12  1.0011E-11  5.7429E-10
  1.7802E-10  7.5356E-10 -1.1397E-11  1.8878E-10  5.7429E-10  3.4960E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.458116  178.782630    0.025492    0.060036   -0.992213  2458196.100871
# Heliocentric elements and errors
Epoch:              2458190.5000  =  2018/03/13
Mean Anomaly:          343.96661 +/-     0.322
Argument of Peri:       78.08374 +/-     0.433
Long of Asc Node:      162.08070 +/-     0.003
Inclination:            11.61601 +/-     0.002
Eccentricity:         0.56790700 +/-    0.0079
Semi-Major Axis:     78.59634682 +/-    1.0523
Time of Perihelion: 2469525.5876 +/-      10.4
Perihelion:          33.96093096 +/-    0.7682
Aphelion:           123.23176268 +/-    1.7623
Period (y)              696.8058 +/-     13.99
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -41.69200717 +/-    0.0053
Ecliptic Y            0.90425030 +/-    0.0002
Ecliptic Z            2.46001860 +/-    0.0003
Ecliptic XDOT         0.00113969 +/-    0.0000
Ecliptic YDOT        -0.00297383 +/-    0.0000
Ecliptic ZDOT         0.00050957 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.77430815 +/-    0.0052
Geocenter to KBO     40.78084886 +/-    0.0053
# Hcoef:  8.16

The following table shows the complete astrometric record for 19GV184. 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 (19GV184) followed by the observatory code and reference code for the source of the astrometry.

2018 03  18.600070 12 01 02.51   +03 39 23.9         19GV184   T09  C~870j      
2018 04  22.424355 11 58 39.70   +03 55 51.9         19GV184   T09  C~870j      
2018 04  24.382594 11 58 32.86   +03 56 36.3         19GV184   T09  C~870j      
2018 04  24.409486 11 58 32.77   +03 56 36.9         19GV184   T09  C~870j      
2018 04  24.504079 11 58 32.44   +03 56 38.9         19GV184   T09  C~870j      
2019 02  05.55162  12 09 43.39   +02 58 36.3   24.2i 19GV184   T09  C~83GF      
2019 02  05.55500  12 09 43.38   +02 58 36.0   23.9i 19GV184   T09  C~83GF      
2019 02  05.59805  12 09 43.25   +02 58 37.2   24.1i 19GV184   T09  C~83GF      
2019 02  05.62497  12 09 43.19   +02 58 37.9   24.0i 19GV184   T09  C~83GF      
2019 03  03.51760  12 08 13.64   +03 11 08.8   24.1z 19GV184   T09  C~83GF      
2019 03  03.52564  12 08 13.61   +03 11 09.3   23.8z 19GV184   T09  C~83GF      
2019 03  03.53922  12 08 13.55   +03 11 09.6   23.8z 19GV184   T09  C~83GF      
2019 03  03.58217  12 08 13.37   +03 11 11.0   23.2z 19GV184   T09  C~83GF      
2019 03  03.61973  12 08 13.22   +03 11 12.0   24.2z 19GV184   T09  C~83GF      
2019 03  03.63313  12 08 13.15   +03 11 13.0   24.0z 19GV184   T09  C~83GF      
2019 04  04.44671  12 05 56.00   +03 27 58.2   25.0g 19GV184   T09  C~83GF      
2019 04  04.46785  12 05 55.91   +03 27 58.5   25.1g 19GV184   T09  C~83GG      
2019 04  04.46994  12 05 55.88   +03 27 59.0   25.0g 19GV184   T09  C~83GG      
2019 04  04.49094  12 05 55.80   +03 27 59.5   25.5g 19GV184   T09  C~83GG      

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    -0.00       0.00     0.02
     2   0.0953  -2354.21     0.31      55.19     0.11
     3   0.1007  -2465.79    -0.15      55.20    -0.03
     4   0.1008  -2467.27    -0.10      55.22     0.00
     5   0.1010  -2472.60    -0.06      55.09    -0.09
     6   0.8869   8132.62    -0.06     873.12     0.26
     7   0.8869   8132.60     0.09     872.79    -0.10
     8   0.8871   8130.33    -0.10     873.11    -0.05
     9   0.8871   8129.23     0.09     873.39     0.06
    10   0.9580   6597.52     0.08    1024.45    -0.24
    11   0.9580   6596.91     0.03    1024.73     0.01
    12   0.9581   6595.96     0.03    1024.64    -0.14
    13   0.9582   6592.93    -0.01    1024.85    -0.11
    14   0.9583   6590.47     0.13    1024.86    -0.26
    15   0.9583   6589.10    -0.30    1025.36     0.18
    16   1.0454   4303.06     0.07    1125.09     0.18
    17   1.0455   4301.71     0.23    1124.83    -0.11
    18   1.0455   4301.10    -0.24    1125.11     0.17
    19   1.0456   4299.80    -0.03    1125.09     0.13

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.

19GV184    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        76.776    79.370    74.468
ecceobj         0.558     0.578     0.538
incobj         11.656    11.653    11.659
qmin           33.133    32.635    33.722
qmax          128.529   130.762   119.211
amean          77.998    80.029    75.209
amin           75.430    78.785    74.071
amax           81.263    82.068    77.173
emean           0.561     0.582     0.534
emin            0.540     0.572     0.518
emax            0.583     0.593     0.551
imean          11.515    10.553    12.259
imin           10.550    10.143    10.525
imax           12.910    10.942    13.587
excite_mean     0.596     0.610     0.575
fracstop        1.000     1.000     1.000
cjmean          2.996     2.983     3.012

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       195.3     155.3     167.0
kozaiamp        179.9      79.1     179.9