Orbit Fit and Astrometric record for 19EA5

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: 19EA5     
# Created Thu Dec  9 02:14:04 2021
# Orbit generated from Bernstein formalism
# Fitting      9 observations of      9
# Arc:   1.87y
# First observation: 2019/03/06
#  Last observation: 2021/01/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000014   0.011239   0.000001   0.005584   0.016300   0.000000
# Chi-squared of fit:     6.79 DOF:     12 RMS:  0.15
# Min/Max residuals:    -0.20    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.182972E-05  1.134952E-02  5.610982E-06  5.652550E-03  1.652606E-02  6.060605E-03
# Covariance matrix:
  5.1888E-13 -1.9707E-12  9.3378E-14 -5.1867E-13 -1.4184E-14 -4.8812E-11
 -1.9707E-12  3.4529E-11 -1.6419E-12  9.8665E-12 -3.4720E-12  9.2962E-10
  9.3378E-14 -1.6419E-12  4.6070E-13 -7.6044E-13  1.2665E-13 -4.5283E-11
 -5.1867E-13  9.8665E-12 -7.6044E-13  3.2331E-12 -9.0213E-13  2.7000E-10
 -1.4184E-14 -3.4720E-12  1.2665E-13 -9.0213E-13  9.7085E-13 -8.5189E-11
 -4.8812E-11  9.2962E-10 -4.5283E-11  2.7000E-10 -8.5189E-11  2.5436E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
   -7.756011  144.107391   -0.348823   -0.125711   -0.923556  2458548.665621
# Heliocentric elements and errors
Epoch:              2458540.5000  =  2019/02/26
Mean Anomaly:           49.85688 +/-     1.204
Argument of Peri:      241.35628 +/-     0.409
Long of Asc Node:      159.33531 +/-     0.003
Inclination:            27.55592 +/-     0.005
Eccentricity:         0.44779832 +/-    0.0113
Semi-Major Axis:     69.71629263 +/-    0.9443
Time of Perihelion: 2429094.7598 +/-     384.9
Perihelion:          38.49745408 +/-    0.9427
Aphelion:           100.93513118 +/-    1.5767
Period (y)              582.1161 +/-     11.83
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -49.53091398 +/-    0.0029
Ecliptic Y           35.40658263 +/-    0.0021
Ecliptic Z           -8.16588195 +/-    0.0005
Ecliptic XDOT        -0.00200250 +/-    0.0000
Ecliptic YDOT        -0.00086724 +/-    0.0000
Ecliptic ZDOT         0.00079217 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   61.42979051 +/-    0.0026
Geocenter to KBO     60.51048596 +/-    0.0036
# Hcoef:  6.63

The following table shows the complete astrometric record for 19EA5. 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 (19EA5) followed by the observatory code and reference code for the source of the astrometry.

2019 03  06.16482  09 35 21.382  +06 09 24.92  24.6r 19EA5     807  C~4Za0      
2019 03  07.14937  09 35 18.454  +06 09 46.05  24.7r 19EA5     807  C~4Za0      
2019 04  04.99755  09 34 08.428  +06 19 38.40  24.7r 19EA5     807  C~4Za0      
2019 11  29.33013  09 42 13.817  +05 54 38.08  24.2r 19EA5     304  C~4Za0      
2019 11  30.33204  09 42 13.360  +05 54 36.00  24.2r 19EA5     304  C~4Za0      
2019 12  27.30457  09 41 38.430  +05 55 54.28        19EA5     304  C~4Za0      
2019 12  27.35427  09 41 38.325  +05 55 54.69        19EA5     304  C~4Za0      
2021 01  15.18390  09 43 39.042  +06 05 07.24        19EA5     304  C~4Za0      
2021 01  16.17039  09 43 36.265  +06 05 21.01        19EA5     304  C~4Za0      

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    -0.20       0.00    -0.04
     2   0.0027    -48.16    -0.17       5.84    -0.10
     3   0.0817  -1227.89     0.31     228.14     0.33
     4   0.7342   6107.58     0.09    1165.12    -0.00
     5   0.7369   6101.81     0.13    1160.92     0.05
     6   0.8108   5583.27    -0.05    1064.42    -0.19
     7   0.8109   5581.66    -0.07    1064.29    -0.17
     8   1.8645   7104.05    -0.10    2176.60     0.14
     9   1.8672   7060.35     0.05    2176.03    -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.

19EA5    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        70.589    73.589    67.990
ecceobj         0.455     0.487     0.424
incobj         27.587    27.574    27.601
qmin           37.546    36.839    38.255
qmax          104.462   111.241    98.592
amean          70.192    73.130    67.704
amin           69.249    72.123    66.895
amax           71.389    74.424    68.839
emean           0.448     0.480     0.418
emin            0.431     0.463     0.402
emax            0.464     0.495     0.433
imean          26.771    26.742    26.756
imin           26.219    26.203    26.253
imax           27.505    27.603    27.432
excite_mean     0.635     0.658     0.614
fracstop        1.000     1.000     1.000
cjmean          2.866     2.853     2.878

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       175.0     176.3     175.3
kozaiamp        180.0     180.0     180.0