Orbit Fit and Astrometric record for 47171

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: 47171     
# Created Thu Oct  2 01:36:27 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  106 observations of  108
# Arc:  39.45y
# First observation: 1974/06/18
#  Last observation: 2013/12/01
# Chi-squared of fit:  1046.68 DOF:  206 RMS:  0.56
# Min/Max residuals:    -2.02    2.04
# Exact a, adot, b, bdot, g, gdot:
  1.494907E-05  2.914950E-02  4.395091E-09 -3.672383E-03  2.787913E-02 -5.874737E-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
   -4.344735  -51.654568    0.666964   -0.057969   -0.763002  2442217.203753
# Heliocentric elements and errors
Epoch:              2442216.5000  =  1974/06/18
Mean Anomaly:          301.87287 +/-     0.000
Argument of Peri:      293.76232 +/-     0.000
Long of Asc Node:       97.09985 +/-     0.000
Inclination:             8.40924 +/-     0.000
Eccentricity:         0.22747317 +/-    0.0000
Semi-Major Axis:     39.66729638 +/-    0.0000
Time of Perihelion: 2456950.6037 +/-       0.0
Perihelion:          30.64405091 +/-    0.0000
Aphelion:            48.69054186 +/-    0.0000
Period (y)              249.8372 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.14406281 +/-    0.0000
Ecliptic Y          -29.06554921 +/-    0.0000
Ecliptic Z           -2.71741610 +/-    0.0000
Ecliptic XDOT         0.00187270 +/-    0.0000
Ecliptic YDOT         0.00225508 +/-    0.0000
Ecliptic ZDOT        -0.00031593 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.64095543 +/-    0.0000
Geocenter to KBO     35.86927524 +/-    0.0000
# Hcoef:  4.83

The following table shows the complete astrometric record for 47171. 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 (47171) followed by the observatory code and reference code for the source of the astrometry.

1974 06  18.70323  20 47 56.82   -22 22 10.6         47171     260   x2955      
1976 05  30.76340  21 03 18.64   -21 44 05.7         47171     260   x2955      
1976 09  16.47271  20 55 00.55   -22 23 51.2         47171     260   x2955      
1999 09  30.34909  23 57 54.53   -09 31 19.7   20.0R 47171     695  Ca8580      
1999 09  30.35235  23 57 54.50   -09 31 19.7   20.0R 47171     695  Ca8580      
1999 10  01.32043  23 57 49.03   -09 31 52.2   20.0R 47171     695  Ca8580      
1999 10  01.32370  23 57 49.00   -09 31 52.1   20.0R 47171     695  Ca8580      
1999 10  02.26968  23 57 43.62   -09 32 23.4   20.0R 47171     695  Ca8580      
1999 10  03.36963  23 57 37.50   -09 33 01.9   20.0R 47171     695  Ca8580      
1999 10  03.37289  23 57 37.46   -09 33 00.7   20.0R 47171     695  Ca8580      
1999 12  25.08271  23 54 06.56   -09 37 35.4   20.0R 47171     684  Ca8580      
1999 12  25.10721  23 54 06.65   -09 37 35.0         47171     684  Ca8580      
1999 12  27.08697  23 54 10.63   -09 36 37.1         47171     684  Ca8580      
1999 12  27.11015  23 54 10.63   -09 36 35.0         47171     684  Ca8580      
2000 01  02.08506  23 54 25.78   -09 33 17.5   20.1R 47171     697  Ca8580      
2000 01  03.08646  23 54 28.72   -09 32 42.5   20.2R 47171     697  Ca8580      
2000 01  04.09209  23 54 31.79   -09 32 06.7   20.1R 47171     697  Ca8580      
2000 07  29.56422  00 11 20.22   -08 00 43.5   19.3R 47171     474  Cb7620      
2000 07  29.63991  00 11 20.06   -08 00 45.6   19.5R 47171     474  Cb7620      
2000 07  29.71156  00 11 19.84   -08 00 47.6   18.2R 47171     474  Cb7620      
2000 07  30.58074  00 11 17.66   -08 01 15.4   18.7R 47171     474  Cb7620      
2000 07  30.58770  00 11 17.63   -08 01 15.4   19.2R 47171     474  Cb7620      
2000 07  30.59387  00 11 17.55   -08 01 15.3   19.1R 47171     474  Cb7620      
2000 07  30.66667  00 11 17.39   -08 01 17.4   19.2R 47171     474  Cb7620      
2000 08  26.67578  00 09 34.24   -08 17 47.3   20.4V 47171     360  Cb7620      
2000 08  26.71120  00 09 33.98   -08 17 48.7         47171     360  Cb7620      
2000 08  26.72431  00 09 33.98   -08 17 49.3         47171     360  Cb7620      
2000 09  05.21961  00 08 45.42   -08 24 09.2   21.4  47171     309  Cc7555      
2000 09  05.22089  00 08 45.42   -08 24 09.3   20.4V 47171     309  Cc7555      
2000 09  05.22207  00 08 45.41   -08 24 09.4         47171     309  Cc7555      
2000 09  05.22324  00 08 45.41   -08 24 09.4         47171     309  Cc7555      
2000 09  05.25822  00 08 45.22   -08 24 10.8   21.4  47171     309  Cc7555      
2000 09  05.25951  00 08 45.22   -08 24 10.8   20.4V 47171     309  Cc7555      
2000 09  05.26069  00 08 45.21   -08 24 10.9   19.7R 47171     309  Cc7555      
2000 09  05.26186  00 08 45.20   -08 24 10.9   19.1I 47171     309  Cc7555      
2000 09  27.86381  00 06 37.88   -08 38 38.7   18.6R 47171     046  Cb9110      
2000 09  27.86878  00 06 37.77   -08 38 38.9         47171     046  Cb9110      
2000 09  27.87050  00 06 37.82   -08 38 39.2         47171     046  Cb9110      
2000 09  27.87416  00 06 37.79   -08 38 39.6         47171     046  Cb9110      
2000 09  27.87750  00 06 37.73   -08 38 40.1   18.5R 47171     046  Cb9110      
2000 09  29.94625  00 06 25.89   -08 39 51.6   19.2R 47171     621  Cb9110      
2000 09  29.94993  00 06 25.86   -08 39 52.3   19.4R 47171     621  Cb9110      
2000 09  29.95361  00 06 25.80   -08 39 52.6   19.3R 47171     621  Cb9110      
2000 09  30.02004  00 06 25.48   -08 39 54.4   18.8R 47171     621  Cb9110      
2000 09  30.02372  00 06 25.43   -08 39 54.6         47171     621  Cb9110      
2000 09  30.02742  00 06 25.48   -08 39 54.8         47171     621  Cb9110      
2000 10  04.00635  00 06 02.79   -08 42 08.7   19.0R 47171     621  Cb9110      
2000 10  04.01003  00 06 02.78   -08 42 08.8   19.1R 47171     621  Cb9110      
2000 10  04.01372  00 06 02.74   -08 42 09.1   19.0R 47171     621  Cb9110      
2000 10  04.01740  00 06 02.70   -08 42 09.0   19.1R 47171     621  Cb9110      
2000 10  04.02108  00 06 02.72   -08 42 08.9   19.2R 47171     621  Cb9110      
2000 10  04.02476  00 06 02.66   -08 42 09.4   18.7R 47171     621  Cb9110      
2000 10  22.89743  00 04 22.20   -08 50 52.1   18.5R 47171     046  Cc0862      
2000 10  22.90104  00 04 22.21   -08 50 52.5   18.7R 47171     046  Cc0862      
2001 05  25.48761  00 18 20.40   -06 59 04.2   20.3R 47171     675  Cd1216      
2001 05  26.48750  00 18 25.16   -06 58 49.1   20.3R 47171     675  Cd1216      
2001 09  25.30909  00 15 28.95   -07 44 11.2   20.   47171     644  Cj0804      
2001 09  25.33042  00 15 28.80   -07 44 11.6         47171     644  Cj0804      
2001 09  27.23985  00 15 17.72   -07 45 21.3         47171     644  Cj0804      
2001 09  27.26067  00 15 17.58   -07 45 21.9   20.5  47171     644  Cj0804      
2001 10  14.93668  00 13 37.65   -07 55 00.4   18.9R 47171     046  Cd7491      
2001 10  14.94172  00 13 37.64   -07 55 00.3   19.0R 47171     046  Cd7491      
2001 10  16.22311  00 13 30.79   -07 55 38.2   20.   47171     644  Cj0804      
2001 10  16.24360  00 13 30.67   -07 55 38.7         47171     644  Cj0804      
2001 10  16.26756  00 13 30.55   -07 55 39.8         47171     644  Cj0804      
2001 10  24.21931  00 12 49.49   -07 58 59.4   20.5  47171     644  Cj0804      
2001 12  18.27813  00 10 33.61   -07 59 55.4   21.   47171     608  Cj0804      
2002 08  11.53025  00 27 43.60   -06 21 20.6   20.5  47171     608  Cj0804      
2002 08  11.54059  00 27 43.57   -06 21 21.5         47171     608  Cj0804      
2002 08  11.55083  00 27 43.50   -06 21 21.6         47171     608  Cj0804      
2002 08  14.08809  00 27 34.89   -06 22 51.0   18.9R 47171     621  Cg0832      
2002 08  14.09962  00 27 34.85   -06 22 51.2   19.1R 47171     621  Cg0832      
2002 08  14.11115  00 27 34.82   -06 22 51.4   19.4R 47171     621  Cg0832      
2002 08  15.09596  00 27 31.31   -06 23 26.9   19.4R 47171     621  Cg0832      
2002 08  15.10750  00 27 31.27   -06 23 27.3   19.4R 47171     621  Cg0832      
2002 08  15.11903  00 27 31.21   -06 23 27.1   19.0R 47171     621  Cg0832      
2002 08  17.12576  00 27 23.75   -06 24 40.5   19.3R 47171     621  Cg0832      
2002 09  08.49284  00 25 40.64   -06 39 12.6   20.   47171     608  Cj0804      
2002 09  17.47266  00 24 51.54   -06 45 11.3   20.5  47171     608  Cj0804      
2002 10  07.31793  00 22 57.45   -06 57 23.7   20.   47171     608  Cj0805      
2002 11  06.07953  00 20 24.50   -07 09 49.1   20.5  47171     644  Cj0805      
2002 11  06.10057  00 20 24.42   -07 09 49.4         47171     644  Cj0805      
2002 11  06.12149  00 20 24.29   -07 09 49.1         47171     644  Cj0805      
2003 09  24.97975  00 32 48.09   -05 55 09.0         47171     621  Ci7510      
2003 09  24.99141  00 32 48.04   -05 55 09.6         47171     621  Ci7510      
2003 09  25.00696  00 32 47.93   -05 55 09.9   19.6R 47171     621  Ci7510      
2003 09  25.95374  00 32 42.51   -05 55 46.1         47171     621  Ci7510      
2003 09  26.01709  00 32 42.10   -05 55 48.7   20.0R 47171     621  Ci7510      
2005 08  31.40240  00 52 12.86   -03 47 33.5   19.2R 47171     644  Co1403      
2005 08  31.42520  00 52 12.75   -03 47 34.5   19.2R 47171     644  Co1403      
2005 08  31.44858  00 52 12.64   -03 47 35.6   19.2R 47171     644  Co1403      
2008 09  30.16121  01 15 50.08   -01 14 25.0         47171     807  C~00FF      
2008 09  30.26755  01 15 49.49   -01 14 28.9         47171     807  C~00FF      
2008 09  30.32799  01 15 49.13   -01 14 31.2         47171     807  C~00FF      
2008 10  01.31152  01 15 43.48   -01 15 08.5         47171     807  C~00FF      
2008 10  02.15411  01 15 38.62   -01 15 40.0         47171     807  C~00FF      
2008 10  06.97896  01 15 10.38   -01 18 38.4   19.8R 47171     130  Cz9797      
2013 10  25.59902  01 57 48.14   +03 24 09.3   19.8R 47171     D29  C~0wJt      
2013 10  25.62089  01 57 48.01   +03 24 08.0   20.4R 47171     D29  C~0wJt      
2013 10  25.64276  01 57 47.88   +03 24 06.8   20.2R 47171     D29  C~0wJt      
2013 11  26.60650  01 54 47.60   +03 11 19.9   19.4R 47171     D29  C~0xYN      
2013 11  26.62440  01 54 47.47   +03 11 19.5   20.1R 47171     D29  C~0xYN      
2013 11  26.64229  01 54 47.39   +03 11 19.0   20.5R 47171     D29  C~0xYN      
2013 12  01.47327  01 54 25.10   +03 10 14.9   19.9R 47171     D29  C~0xvU      
2013 12  01.49216  01 54 25.02   +03 10 15.5   19.2R 47171     D29  C~0xvU      
2013 12  01.51105  01 54 25.00   +03 10 15.1   19.8R 47171     D29  C~0xvU      
2013 12  23.51744  01 53 11.85   +03 09 03.0   19.9R 47171     D29  C~0yUG      
2013 12  23.53732  01 53 11.65   +03 09 01.7   21.2R 47171     D29  C~0yUG      

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    -0.09       0.00     0.21
  2   1.9495      0.00     0.06       0.00    -1.03
  3   2.2471      0.00     0.01       0.00    -0.76
  4  25.2831      0.00    -0.52       0.00    -0.16
  5  25.2831      0.00    -0.69       0.00    -0.05
  6  25.2857      0.00    -0.42       0.00    -0.07
  7  25.2858      0.00    -0.59       0.00     0.14
  8  25.2883      0.00    -1.13       0.00     0.18
  9  25.2914      0.00 (   0.17)      0.00 (  -2.40)
 10  25.2914      0.00    -0.15       0.00    -1.09
 11  25.5178      0.00    -0.84       0.00    -0.98
 12  25.5179      0.00    -0.16       0.00    -1.30
 13  25.5233      0.00 (  -1.01)      0.00 (  -2.82)
 14  25.5234      0.00    -1.73       0.00    -1.44
 15  25.5397      0.00     0.07       0.00     0.01
 16  25.5425      0.00     0.20       0.00    -0.21
 17  25.5452      0.00     0.34       0.00    -0.43
 18  26.1132      0.00    -0.50       0.00     0.02
 19  26.1134      0.00     0.05       0.00     0.29
 20  26.1136      0.00    -0.44       0.00     0.54
 21  26.1160      0.00     0.28       0.00     0.15
 22  26.1160      0.00     0.11       0.00     0.37
 23  26.1161      0.00    -0.84       0.00     0.66
 24  26.1163      0.00    -0.29       0.00     0.88
 25  26.1902      0.00     1.10       0.00    -0.25
 26  26.1903      0.00    -0.17       0.00    -0.24
 27  26.1903      0.00     0.80       0.00    -0.32
 28  26.2163      0.00     0.09       0.00     0.15
 29  26.2163      0.00     0.19       0.00     0.10
 30  26.2163      0.00     0.14       0.00     0.05
 31  26.2163      0.00     0.24       0.00     0.09
 32  26.2164      0.00     0.25       0.00     0.10
 33  26.2164      0.00     0.35       0.00     0.15
 34  26.2164      0.00     0.30       0.00     0.10
 35  26.2165      0.00     0.24       0.00     0.14
 36  26.2783      0.00     0.85       0.00     0.52
 37  26.2783      0.00    -0.36       0.00     0.49
 38  26.2784      0.00     0.54       0.00     0.26
 39  26.2784      0.00     0.41       0.00    -0.01
 40  26.2784      0.00    -0.20       0.00    -0.40
 41  26.2840      0.00     0.31       0.00     0.52
 42  26.2840      0.00     0.18       0.00    -0.05
 43  26.2841      0.00    -0.40       0.00    -0.22
 44  26.2842      0.00     0.59       0.00     0.27
 45  26.2842      0.00     0.16       0.00     0.20
 46  26.2843      0.00     1.23       0.00     0.13
 47  26.2951      0.00     0.71       0.00     0.33
 48  26.2952      0.00     0.87       0.00     0.35
 49  26.2952      0.00     0.59       0.00     0.17
 50  26.2952      0.00     0.31       0.00     0.39
 51  26.2952      0.00     0.92       0.00     0.61
 52  26.2952      0.00     0.34       0.00     0.23
 53  26.3469      0.00    -0.36       0.00     0.30
 54  26.3469      0.00     0.06       0.00    -0.02
 55  26.9344      0.00     0.03       0.00    -1.40
 56  26.9371      0.00    -0.76       0.00    -2.02
 57  27.2707      0.00     0.58       0.00    -0.44
 58  27.2707      0.00     0.21       0.00    -0.05
 59  27.2759      0.00    -0.81       0.00     0.49
 60  27.2760      0.00    -1.08       0.00     0.65
 61  27.3244      0.00    -1.18       0.00     1.80
 62  27.3244      0.00    -0.91       0.00     2.04
 63  27.3279      0.00    -0.15       0.00     0.04
 64  27.3280      0.00    -0.27       0.00     0.11
 65  27.3280      0.00    -0.11       0.00    -0.33
 66  27.3498      0.00     0.11       0.00     0.38
 67  27.5005      0.00     0.19       0.00     0.66
 68  28.1474      0.00     0.11       0.00     0.50
 69  28.1474      0.00     0.18       0.00    -0.04
 70  28.1474      0.00    -0.34       0.00     0.22
 71  28.1544      0.00     0.23       0.00     0.13
 72  28.1544      0.00     0.25       0.00     0.35
 73  28.1544      0.00     0.43       0.00     0.56
 74  28.1571      0.00     0.48       0.00     0.31
 75  28.1572      0.00     0.52       0.00     0.33
 76  28.1572      0.00     0.26       0.00     0.94
 77  28.1627      0.00    -0.20       0.00     0.40
 78  28.2239      0.00    -0.26       0.00     0.14
 79  28.2485      0.00     0.17       0.00    -0.49
 80  28.3028      0.00     0.05       0.00    -0.19
 81  28.3843      0.00     0.04       0.00    -0.08
 82  28.3844      0.00     0.21       0.00    -0.06
 83  28.3844      0.00    -0.39       0.00     0.56
 84  29.2684      0.00     0.31       0.00    -0.15
 85  29.2684      0.00     0.58       0.00    -0.30
 86  29.2685      0.00     0.29       0.00    -0.01
 87  29.2710      0.00     0.78       0.00     0.00
 88  29.2712      0.00     0.19       0.00    -0.18
 89  31.2025      0.00    -0.04       0.00     0.12
 90  31.2025      0.00    -0.14       0.00    -0.01
 91  31.2026      0.00    -0.20       0.00    -0.22
 92  34.2846      0.00    -0.27       0.00    -0.04
 93  34.2849      0.00     0.20       0.00     0.07
 94  34.2851      0.00     0.09       0.00     0.04
 95  34.2878      0.00     0.23       0.00    -0.29
 96  34.2901      0.00     0.16       0.00    -0.24
 97  34.3033      0.00    -0.43       0.00    -0.30
 98  39.3536      0.00     0.64       0.00     0.61
 99  39.3536      0.00     0.71       0.00     0.00
100  39.3537      0.00     0.79       0.00    -0.52
101  39.4412      0.00     0.48       0.00    -0.46
102  39.4413      0.00    -0.16       0.00    -0.59
103  39.4413      0.00    -0.04       0.00    -0.83
104  39.4545      0.00    -0.81       0.00    -1.08
105  39.4546      0.00    -0.73       0.00    -0.26
106  39.4546      0.00     0.25       0.00    -0.44
107  39.5149      0.00     1.50       0.00     1.03
108  39.5149      0.00    -0.84       0.00    -0.37

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.

47171    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.788    39.787    39.788
ecceobj         0.232     0.232     0.232
incobj          8.415     8.415     8.415
qmin           29.961    29.961    29.961
qmax           49.394    49.395    49.394
amean          39.455    39.455    39.455
amin           39.019    39.019    39.019
amax           39.952    39.952    39.952
emean           0.217     0.217     0.217
emin            0.194     0.194     0.194
emax            0.240     0.240     0.240
imean           6.658     6.657     6.658
imin            5.703     5.703     5.704
imax            7.721     7.721     7.721
excite_mean     0.246     0.246     0.246
fracstop        1.000     1.000     1.000
cjmean          2.983     2.983     2.983

libcent 0       180.3     180.3     180.3
libamp  0        74.9      74.9      74.9
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       184.1     184.1     184.1
kozaiamp        180.0     180.0     180.0