Orbit Fit and Astrometric record for 60620

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: 60620     
# Created Sat Oct 21 01:36:23 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   42 observations of   44
# Arc:  15.98y
# First observation: 2000/02/12
#  Last observation: 2016/02/04
# Chi-squared of fit:   276.58 DOF:   78 RMS:  0.45
# Min/Max residuals:    -1.03    1.76
# Exact a, adot, b, bdot, g, gdot:
  2.629565E-05  2.407316E-02  6.305012E-06  8.499927E-03  2.528352E-02 -4.989298E-03
# 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
   -0.061209 -174.392890    0.666135   -0.001009   -0.733452  2451586.894378
# Heliocentric elements and errors
Epoch:              2451586.5000  =  2000/02/12
Mean Anomaly:          301.59071 +/-     0.000
Argument of Peri:       82.31406 +/-     0.000
Long of Asc Node:      184.82566 +/-     0.000
Inclination:            19.56586 +/-     0.000
Eccentricity:         0.21823600 +/-    0.0000
Semi-Major Axis:     43.50387906 +/-    0.0000
Time of Perihelion: 2468591.2330 +/-       0.0
Perihelion:          34.00976642 +/-    0.0000
Aphelion:            52.99799170 +/-    0.0000
Period (y)              286.9460 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.15021816 +/-    0.0000
Ecliptic Y           -3.27107921 +/-    0.0000
Ecliptic Z           -0.04198019 +/-    0.0000
Ecliptic XDOT         0.00078568 +/-    0.0000
Ecliptic YDOT        -0.00253454 +/-    0.0000
Ecliptic ZDOT         0.00092110 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.28340039 +/-    0.0000
Geocenter to KBO     39.55160699 +/-    0.0000
# Hcoef:  6.59

The following table shows the complete astrometric record for 60620. 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 (60620) followed by the observatory code and reference code for the source of the astrometry.

2000 02  12.393635 12 20 29.46   -02 17 00.9   21.5V 60620     645  C~1Rpj      
2000 02  12.394465 12 20 29.45   -02 17 00.9   21.5V 60620     645  C~1Rpj      
2000 02  12.396952 12 20 29.44   -02 17 00.8   23.6V 60620     645  C~1Rpj      
2000 03  27.32295  12 17 29.28   -01 53 44.0         60620     568  Cb2555      
2000 03  27.36872  12 17 29.07   -01 53 42.7         60620     568  Cb2555      
2000 03  29.37286  12 17 19.89   -01 52 32.7   22.2R 60620     568  Cb2555      
2000 03  29.41648  12 17 19.69   -01 52 31.2   22.2R 60620     568  Cb2555      
2000 03  29.45762  12 17 19.50   -01 52 29.8   22.1R 60620     568  Cb2555      
2000 03  30.35311  12 17 15.40   -01 51 59.3   22.3R 60620     568  Cb2555      
2000 03  30.37477  12 17 15.30   -01 51 58.6   22.3R 60620     568  Cb2555      
2000 03  30.49429  12 17 14.74   -01 51 54.5   23.1R 60620     568  Cb2555      
2000 05  26.19104  12 13 58.05   -01 25 43.7   22.2R 60620     695  Cb5712      
2000 05  26.23332  12 13 57.97   -01 25 43.3   22.2R 60620     695  Cb5712      
2000 05  26.27743  12 13 57.91   -01 25 42.7   22.4R 60620     695  Cb5712      
2000 05  27.18759  12 13 56.44   -01 25 28.1   22.2R 60620     695  Cb5712      
2000 05  27.23363  12 13 56.38   -01 25 27.7   22.4R 60620     695  Cb5712      
2000 05  27.27246  12 13 56.30   -01 25 26.9   22.6R 60620     695  Cb5712      
2000 08  07.98068  12 15 47.93   -01 31 30.2   23.1R 60620     809  Cc2338      
2000 08  07.99956  12 15 48.00   -01 31 30.6   22.7R 60620     809  Cc2338      
2000 08  08.01402  12 15 48.04   -01 31 30.7   23.3R 60620     809  Cc2338      
2000 12  16.47003  12 26 52.87   -02 31 49.8   22.6R 60620     695  Cc3761      
2000 12  16.49417  12 26 52.94   -02 31 50.2   22.2R 60620     695  Cc3761      
2000 12  16.51089  12 26 52.96   -02 31 50.7   22.6R 60620     695  Cc3761      
2000 12  17.46311  12 26 54.92   -02 31 57.6         60620     695  Cc3761      
2001 01  30.24915  12 26 52.78   -02 27 28.9   22.5R 60620     809  Cc6643      
2001 01  31.26365  12 26 50.65   -02 27 09.3   22.2R 60620     809  Cc6643      
2002 02  10.22544  12 32 21.83   -02 29 27.1   22.2R 60620     304  Ce8748      
2002 02  10.31037  12 32 21.58   -02 29 24.9         60620     304  Ce8748      
2002 04  08.03727  12 28 28.91   -01 58 57.3   21.8R 60620     807  Cf4461      
2002 04  08.10459  12 28 28.59   -01 58 55.2         60620     807  Cf4461      
2003 04  30.25815  12 32 56.51   -01 53 06.4   22.3R 60620     688  Ch7885      
2003 04  30.31887  12 32 56.38   -01 53 04.4         60620     688  Ch7885      
2003 05  31.04367  12 31 27.57   -01 41 46.1   21.3R 60620     807   i2204      
2003 05  31.12818  12 31 27.42   -01 41 44.6         60620     807   i2204      
2003 06  01.01230  12 31 25.92   -01 41 32.4         60620     807   i2204      
2004 03  29.34549  12 41 19.46   -02 16 05.3   22.5V 60620     291  Ck3736      
2004 03  29.36855  12 41 19.34   -02 16 05.5   22.3V 60620     291  Ck3736      
2004 03  29.39161  12 41 19.26   -02 16 03.0   22.7V 60620     291  Ck3736      
2006 06  21.03881  12 49 15.22   -01 55 48.1   22.5R 60620     304  Cr5012      
2006 06  21.11567  12 49 15.20   -01 55 47.9         60620     304  Cr5012      
2016 02  04.47254  14 02 09.00   -03 48 43.7   22.1R 60620     G37  C~1mvE      
2016 02  04.53400  14 02 08.97   -03 48 42.3         60620     G37  C~1mvE      
2016 03  13.27492  14 00 55.49   -03 30 51.0   22.4R 60620     G37  C~1pgf      
2016 03  13.32815  14 00 55.32   -03 30 49.1         60620     G37  C~1pgg      

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    -0.15       0.00     1.43
  2   0.0000      0.00 (  -2.29)      0.00 (   0.69)
  3   0.0000      0.00 (  -2.32)      0.00 (   0.73)
  4   0.1203      0.00    -0.01       0.00     0.58
  5   0.1204      0.00     0.04       0.00     0.28
  6   0.1259      0.00    -0.04       0.00     0.29
  7   0.1260      0.00     0.00       0.00     0.27
  8   0.1261      0.00     0.03       0.00     0.24
  9   0.1286      0.00    -0.25       0.00    -0.48
 10   0.1286      0.00    -0.24       0.00    -0.53
 11   0.1290      0.00    -0.30       0.00    -0.59
 12   0.2842      0.00    -0.32       0.00    -0.12
 13   0.2843      0.00    -0.41       0.00    -0.40
 14   0.2844      0.00    -0.16       0.00    -0.50
 15   0.2869      0.00     0.09       0.00    -0.22
 16   0.2870      0.00     0.34       0.00    -0.53
 17   0.2871      0.00     0.11       0.00    -0.33
 18   0.4862      0.00     0.23       0.00    -0.18
 19   0.4863      0.00     0.03       0.00    -0.13
 20   0.4863      0.00    -0.32       0.00     0.11
 21   0.8435      0.00     0.07       0.00     0.42
 22   0.8435      0.00     0.38       0.00     0.21
 23   0.8436      0.00     0.17       0.00    -0.16
 24   0.8462      0.00     0.09       0.00     0.14
 25   0.9661      0.00     0.23       0.00    -0.13
 26   0.9688      0.00     0.15       0.00    -0.14
 27   1.9954      0.00     0.10       0.00     1.63
 28   1.9957      0.00    -0.01       0.00     1.76
 29   2.1510      0.00     0.61       0.00    -0.31
 30   2.1512      0.00     0.45       0.00    -0.52
 31   3.2111      0.00    -0.16       0.00    -0.26
 32   3.2113      0.00     1.46       0.00    -0.01
 33   3.2954      0.00    -0.37       0.00    -0.19
 34   3.2956      0.00    -0.30       0.00     0.10
 35   3.2981      0.00    -0.20       0.00    -0.14
 36   4.1258      0.00    -0.02       0.00    -0.02
 37   4.1259      0.00    -0.18       0.00    -1.03
 38   4.1259      0.00     0.26       0.00     0.65
 39   6.3536      0.00    -0.43       0.00    -0.13
 40   6.3538      0.00    -0.25       0.00    -0.13
 41  15.9783      0.00     0.23       0.00    -0.06
 42  15.9785      0.00    -0.04       0.00     0.10
 43  16.0818      0.00    -0.20       0.00    -0.10
 44  16.0820      0.00     0.14       0.00    -0.03

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.

60620    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        43.496    43.496    43.497
ecceobj         0.218     0.218     0.218
incobj         19.568    19.568    19.568
qmin           30.318    30.946    33.621
qmax           57.893    57.214    54.322
amean          43.725    43.726    43.726
amin           43.265    43.285    43.300
amax           44.295    44.263    44.207
emean           0.229     0.222     0.186
emin            0.128     0.125     0.121
emax            0.307     0.293     0.229
imean          18.978    19.307    20.664
imin           16.012    16.734    19.167
imax           22.146    22.363    22.145
excite_mean     0.402     0.401     0.400
fracstop        1.000     1.000     1.000
cjmean          2.902     2.903     2.904

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       181.6     125.7      88.8
kozaiamp        111.5      82.8      26.2