Orbit Fit and Astrometric record for 501105

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: 501105    
# Created Sat Dec 16 02:36:55 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   53 observations of   53
# Arc:   3.83y
# First observation: 2013/09/23
#  Last observation: 2017/07/25
# Chi-squared of fit:   208.37 DOF:  100 RMS:  0.35
# Min/Max residuals:    -0.96    1.08
# Exact a, adot, b, bdot, g, gdot:
  1.715739E-05  2.166566E-02 -3.957539E-06 -1.705289E-02  2.642088E-02  3.913732E-04
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   16.129183    8.757550    0.140061    0.276120   -0.954627  2456559.452558
# Heliocentric elements and errors
Epoch:              2456558.5000  =  2013/09/23
Mean Anomaly:           10.34445 +/-     0.000
Argument of Peri:      143.54004 +/-     0.000
Long of Asc Node:      207.60009 +/-     0.000
Inclination:            40.77145 +/-     0.000
Eccentricity:         0.07090282 +/-    0.0000
Semi-Major Axis:     41.70617473 +/-    0.0000
Time of Perihelion: 2453731.6433 +/-       0.0
Perihelion:          38.74908938 +/-    0.0000
Aphelion:            44.66326008 +/-    0.0000
Period (y)              269.3449 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.93820941 +/-    0.0000
Ecliptic Y            5.55177198 +/-    0.0000
Ecliptic Z           10.51444585 +/-    0.0000
Ecliptic XDOT         0.00017569 +/-    0.0000
Ecliptic YDOT         0.00229832 +/-    0.0000
Ecliptic ZDOT        -0.00168614 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.80472131 +/-    0.0000
Geocenter to KBO     37.84888555 +/-    0.0000
# Hcoef:  7.10

The following table shows the complete astrometric record for 501105. 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 (501105) followed by the observatory code and reference code for the source of the astrometry.

2013 09  23.95178  00 05 43.00   +18 14 37.3   22.5R 501105    G36  C~0x7u      
2013 09  24.09661  00 05 42.26   +18 14 32.8   21.8R 501105    G36  C~0x7u      
2013 09  24.11598  00 05 42.21   +18 14 31.9   21.8R 501105    G36  C~0x7u      
2013 09  24.12570  00 05 42.17   +18 14 32.0   22.3R 501105    G36  C~0x7u      
2013 09  24.17192  00 05 41.89   +18 14 30.2   22.0R 501105    G36  C~0x7u      
2013 09  24.83418  00 05 38.72   +18 14 03.8   22.0R 501105    G36  C~0x7u      
2013 09  24.85478  00 05 38.59   +18 14 02.5   22.9R 501105    G36  C~0x7u      
2013 09  24.86674  00 05 38.52   +18 14 03.3   22.3R 501105    G36  C~0x7u      
2013 09  24.93214  00 05 38.14   +18 14 00.5   22.5R 501105    G36  C~0x7u      
2013 09  24.95088  00 05 38.06   +18 13 59.8   22.7R 501105    G36  C~0x7u      
2013 09  25.00686  00 05 37.77   +18 13 57.3   22.7R 501105    G36  C~0x7u      
2013 09  25.02554  00 05 37.66   +18 13 56.6   22.6R 501105    G36  C~0x7u      
2013 09  25.86715  00 05 33.56   +18 13 23.2   22.7R 501105    G36  C~0x7u      
2013 09  25.88277  00 05 33.44   +18 13 22.4   22.9R 501105    G36  C~0x7u      
2013 09  25.89837  00 05 33.35   +18 13 21.6   22.5R 501105    G36  C~0x7u      
2013 09  25.91745  00 05 33.28   +18 13 20.9   22.7R 501105    G36  C~0x7u      
2013 09  25.93651  00 05 33.15   +18 13 19.8   23.1R 501105    G36  C~0x7u      
2013 09  25.99362  00 05 32.86   +18 13 17.8   22.8R 501105    G36  C~0x7u      
2013 09  26.01261  00 05 32.79   +18 13 17.3   23.2R 501105    G36  C~0x7u      
2013 09  26.05065  00 05 32.65   +18 13 15.0   22.4R 501105    G36  C~0x7u      
2013 09  26.06964  00 05 32.51   +18 13 13.9   23.0R 501105    G36  C~0x7u      
2013 09  30.83801  00 05 08.95   +18 09 57.5   23.4R 501105    G36  C~0x7u      
2013 09  30.86938  00 05 08.81   +18 09 55.9   23.7R 501105    G36  C~0x7u      
2013 10  01.11980  00 05 07.55   +18 09 45.3   22.8R 501105    G36  C~0x7u      
2013 11  06.77214  00 02 30.68   +17 40 51.9         501105    G36  C~0x7u      
2013 11  06.78653  00 02 30.66   +17 40 51.2         501105    G36  C~0x7u      
2013 11  06.80517  00 02 30.54   +17 40 50.1         501105    G36  C~0x7u      
2013 11  06.83485  00 02 30.47   +17 40 48.9         501105    G36  C~0x7u      
2014 08  25.01918  00 14 28.50   +18 06 47.1         501105    G36  C~1EHp      
2014 08  25.03165  00 14 28.42   +18 06 46.6         501105    G36  C~1EHp      
2014 08  25.06040  00 14 28.32   +18 06 46.1         501105    G36  C~1EHp      
2014 08  25.09370  00 14 28.16   +18 06 45.3         501105    G36  C~1EHp      
2014 08  25.12320  00 14 28.05   +18 06 44.7         501105    G36  C~1EHp      
2014 10  22.16928  00 09 56.20   +17 31 13.7   22.3R 501105    G37  C~1EHp      
2014 10  22.27617  00 09 55.72   +17 31 08.7         501105    G37  C~1EHp      
2014 11  17.78664  00 08 22.50   +17 10 00.0         501105    G36  C~1EHp      
2014 11  17.81216  00 08 22.42   +17 09 58.6         501105    G36  C~1EHp      
2014 11  17.87366  00 08 22.26   +17 09 55.6         501105    G36  C~1EHp      
2015 11  07.85156  00 15 14.16   +16 54 49.1         501105    G36  C~1ddc      
2015 11  07.86290  00 15 14.16   +16 54 48.8         501105    G36  C~1ddc      
2015 11  07.88528  00 15 14.06   +16 54 47.8         501105    G36  C~1ddc      
2015 11  07.89647  00 15 13.99   +16 54 47.4         501105    G36  C~1ddc      
2015 11  07.94231  00 15 13.84   +16 54 45.2         501105    G36  C~1ddc      
2015 11  09.82574  00 15 07.50   +16 53 16.4         501105    G36  C~1ddc      
2015 11  09.83761  00 15 07.40   +16 53 15.5         501105    G36  C~1ddc      
2016 10  29.91618  00 22 05.24   +16 37 12.8         501105    G36  C~20qm      
2016 10  29.94569  00 22 05.15   +16 37 12.1         501105    G36  C~20qm      
2017 07  24.10485  00 34 47.36   +16 57 40.1         501105    G36  C~2IXz      
2017 07  24.14587  00 34 47.32   +16 57 40.5         501105    G36  C~2IXz      
2017 07  25.02289  00 34 46.18   +16 57 42.5         501105    G36  C~2IXz      
2017 07  25.11438  00 34 46.09   +16 57 42.6         501105    G36  C~2IXz      
2017 07  25.13250  00 34 46.08   +16 57 42.3         501105    G36  C~2IXz      
2017 07  25.15065  00 34 46.10   +16 57 42.6         501105    G36  C~2IXz      

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     0.06
  2   0.0004      0.00    -0.37       0.00    -0.31
  3   0.0004      0.00     0.34       0.00    -0.44
  4   0.0005      0.00     0.47       0.00     0.04
  5   0.0006      0.00    -0.26       0.00     0.07
  6   0.0024      0.00     1.08       0.00    -0.17
  7   0.0025      0.00     0.68       0.00    -0.66
  8   0.0025      0.00     0.53       0.00     0.61
  9   0.0027      0.00    -0.25       0.00     0.39
 10   0.0027      0.00    -0.03       0.00     0.43
 11   0.0029      0.00    -0.15       0.00     0.15
 12   0.0029      0.00    -0.39       0.00     0.20
 13   0.0052      0.00     0.50       0.00     0.44
 14   0.0053      0.00    -0.13       0.00     0.27
 15   0.0053      0.00    -0.30       0.00     0.09
 16   0.0054      0.00     0.09       0.00     0.15
 17   0.0054      0.00    -0.43       0.00    -0.18
 18   0.0056      0.00    -0.46       0.00     0.11
 19   0.0056      0.00    -0.08       0.00     0.37
 20   0.0057      0.00     0.70       0.00    -0.39
 21   0.0058      0.00     0.03       0.00    -0.72
 22   0.0189      0.00    -0.13       0.00     0.18
 23   0.0189      0.00     0.11       0.00    -0.10
 24   0.0196      0.00    -0.03       0.00    -0.05
 25   0.1200      0.00     0.02       0.00     0.02
 26   0.1200      0.00     0.44       0.00     0.02
 27   0.1201      0.00    -0.43       0.00    -0.17
 28   0.1201      0.00     0.00       0.00     0.07
 29   0.9174      0.00     0.49       0.00     0.38
 30   0.9174      0.00     0.05       0.00     0.12
 31   0.9175      0.00     0.31       0.00     0.19
 32   0.9176      0.00    -0.04       0.00     0.06
 33   0.9176      0.00     0.12       0.00     0.05
 34   1.0766      0.00    -0.05       0.00     0.49
 35   1.0769      0.00    -0.16       0.00     0.59
 36   1.1494      0.00     0.09       0.00     0.41
 37   1.1495      0.00    -0.11       0.00     0.19
 38   1.1497      0.00    -0.10       0.00     0.03
 39   2.1216      0.00    -0.05       0.00    -0.06
 40   2.1216      0.00     0.56       0.00     0.18
 41   2.1217      0.00     0.25       0.00     0.23
 42   2.1217      0.00    -0.21       0.00     0.36
 43   2.1218      0.00    -0.03       0.00     0.33
 44   2.1270      0.00     0.57       0.00     0.38
 45   2.1270      0.00    -0.33       0.00     0.04
 46   3.0991      0.00    -0.22       0.00    -0.96
 47   3.0992      0.00     0.27       0.00    -0.28
 48   3.8307      0.00     0.41       0.00    -0.57
 49   3.8308      0.00     0.57       0.00    -0.26
 50   3.8332      0.00    -0.85       0.00     0.29
 51   3.8334      0.00    -0.42       0.00     0.25
 52   3.8335      0.00    -0.21       0.00    -0.08
 53   3.8335      0.00     0.45       0.00     0.19

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.

501105    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.900    41.900    41.900
ecceobj         0.076     0.076     0.076
incobj         40.707    40.707    40.707
qmin           38.116    38.116    38.116
qmax           45.585    45.585    45.584
amean          41.736    41.736    41.736
amin           41.417    41.416    41.419
amax           42.085    42.085    42.084
emean           0.071     0.071     0.071
emin            0.060     0.060     0.060
emax            0.084     0.084     0.084
imean          41.188    41.188    41.188
imin           40.948    40.948    40.948
imax           41.421    41.421    41.421
excite_mean     0.662     0.662     0.662
fracstop        1.000     1.000     1.000
cjmean          2.488     2.488     2.488

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       193.6     193.5     193.6
kozaiamp        180.0     180.0     179.9