Orbit Fit and Astrometric record for 07RH283

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: 07RH283   
# Created Wed Dec 13 02:37:31 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   64 observations of   64
# Arc:  32.43y
# First observation: 1983/05/08
#  Last observation: 2015/10/11
# Chi-squared of fit:   343.70 DOF:  122 RMS:  0.41
# Min/Max residuals:    -1.78    1.31
# Exact a, adot, b, bdot, g, gdot:
  2.703609E-05  1.202964E-01 -7.737484E-06 -2.617206E-02  7.422331E-02 -4.987528E-02
# Covariance matrix:
  3.1247E-13 -9.8471E-15 -6.3397E-14  3.2674E-15 -6.1861E-14  3.3512E-15
 -9.8471E-15  8.5078E-16  2.8430E-15 -3.7461E-16  7.1186E-15  3.2431E-16
 -6.3397E-14  2.8430E-15  1.3581E-13 -8.1756E-15  4.5525E-14  7.0239E-16
  3.2674E-15 -3.7461E-16 -8.1756E-15  7.4006E-16 -6.1481E-15 -2.8919E-16
 -6.1861E-14  7.1186E-15  4.5525E-14 -6.1481E-15  1.1684E-13  5.5043E-15
  3.3512E-15  3.2431E-16  7.0239E-16 -2.8919E-16  5.5043E-15  4.8929E-16
#      lat0       lon0       xBary       yBary       zBary        JD0
  -19.332060  162.572220   -0.904422   -0.140818   -0.402231  2445462.882756
# Heliocentric elements and errors
Epoch:              2445462.5000  =  1983/05/08
Mean Anomaly:          310.57290 +/-     0.001
Argument of Peri:      329.00069 +/-     0.000
Long of Asc Node:      286.58665 +/-     0.000
Inclination:            21.36035 +/-     0.000
Eccentricity:         0.34163835 +/-    0.0000
Semi-Major Axis:     15.99901237 +/-    0.0000
Time of Perihelion: 2448671.7295 +/-       0.1
Perihelion:          10.53313614 +/-    0.0000
Aphelion:            21.46488860 +/-    0.0000
Period (y)               63.9953 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -12.81209294 +/-    0.0000
Ecliptic Y            3.06361089 +/-    0.0000
Ecliptic Z           -4.46024044 +/-    0.0000
Ecliptic XDOT         0.00063975 +/-    0.0000
Ecliptic YDOT        -0.00485355 +/-    0.0000
Ecliptic ZDOT        -0.00030208 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.90800256 +/-    0.0000
Geocenter to KBO     13.47304735 +/-    0.0000
# Hcoef:  8.45

The following table shows the complete astrometric record for 07RH283. 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 (07RH283) followed by the observatory code and reference code for the source of the astrometry.

1983 05  08.38214  10 26 06.23   -11 01 44.7   19.6  07RH283   260   w9865      
1984 03  29.51347  10 56 15.94   -16 18 18.0         07RH283   260   w9865      
1984 03  29.55514  10 56 15.42   -16 18 14.3         07RH283   260   w9865      
1991 04  13.70019  16 28 54.51   -36 52 17.0   18.5R 07RH283   260   w9865      
1991 04  13.73491  16 28 54.13   -36 52 17.5   18.5R 07RH283   260   w9865      
2001 08  23.305667 22 43 14.67   +13 33 54.9   20.0V 07RH283   645  C~1SgY      
2001 08  23.306496 22 43 14.66   +13 33 54.9   19.8V 07RH283   645  C~1SgY      
2001 08  23.308984 22 43 14.61   +13 33 54.8   20.6V 07RH283   645  C~1SgY      
2001 10  06.16824  22 34 36.09   +12 41 42.8   20.0R 07RH283   644  Cw9865      
2001 10  06.17878  22 34 35.97   +12 41 42.1   19.5R 07RH283   644  Cw9865      
2001 10  06.18924  22 34 35.87   +12 41 41.6         07RH283   644  Cw9865      
2002 08  14.44906  23 08 28.21   +17 14 10.0   19.6R 07RH283   644  Cw9865      
2002 08  14.45954  23 08 28.09   +17 14 09.9   19.7R 07RH283   644  Cw9865      
2002 08  14.46986  23 08 28.00   +17 14 09.8   19.7R 07RH283   644  Cw9865      
2002 08  15.39766  23 08 17.79   +17 14 00.2   19.9R 07RH283   644  Cw9865      
2002 08  15.40874  23 08 17.66   +17 14 00.3   19.9R 07RH283   644  Cw9865      
2002 08  15.42084  23 08 17.49   +17 13 59.9   20.1R 07RH283   644  Cw9865      
2002 08  22.36516  23 06 58.10   +17 11 49.7   19.9R 07RH283   644  Cw9865      
2002 08  22.37209  23 06 58.00   +17 11 50.0   19.6R 07RH283   644  Cw9865      
2002 08  22.37797  23 06 57.97   +17 11 49.7   20.0R 07RH283   644  Cw9865      
2002 08  22.38391  23 06 57.91   +17 11 49.5   19.6R 07RH283   644  Cw9865      
2002 08  22.38847  23 06 57.80   +17 11 48.9   19.8R 07RH283   644  Cw9865      
2002 08  22.39683  23 06 57.72   +17 11 49.3   20.0R 07RH283   644  Cw9865      
2002 09  03.26892  23 04 33.38   +17 04 17.3   19.5R 07RH283   644  Cw9865      
2002 09  03.29020  23 04 33.13   +17 04 16.0   19.6R 07RH283   644  Cw9865      
2002 09  03.31126  23 04 32.86   +17 04 15.0   19.4R 07RH283   644  Cw9865      
2002 09  11.35730  23 02 52.55   +16 56 38.0   19.8R 07RH283   644  Cw9865      
2002 09  11.37134  23 02 52.42   +16 56 37.3   19.9R 07RH283   644  Cw9865      
2002 09  11.38796  23 02 52.21   +16 56 35.8   19.5R 07RH283   644  Cw9865      
2002 10  03.14888  22 58 36.41   +16 28 03.5   19.4R 07RH283   644  Cw9865      
2002 10  03.16315  22 58 36.23   +16 28 02.1   19.5R 07RH283   644  Cw9865      
2002 10  03.17010  22 58 36.15   +16 28 01.7   19.6R 07RH283   644  Cw9865      
2002 10  03.18432  22 58 36.02   +16 27 59.7   19.9R 07RH283   644  Cw9865      
2002 10  03.20527  22 58 35.83   +16 27 58.5   20.0R 07RH283   644  Cw9865      
2004 09  07.23430  23 47 43.48   +23 03 50.6   20.1R 07RH283   644  Cw9865      
2004 09  07.29912  23 47 42.71   +23 03 48.5   21.1R 07RH283   644  Cw9865      
2004 09  07.36333  23 47 41.93   +23 03 46.1   21.0R 07RH283   644  Cw9865      
2007 09  15.26864  00 47 13.96   +29 29 21.5   21.5R 07RH283   675  Cw9865      
2007 09  15.34437  00 47 13.21   +29 29 19.4   21.3R 07RH283   675  Cw9865      
2007 09  16.22344  00 47 03.59   +29 28 57.9   21.4R 07RH283   675  Cw9865      
2007 09  16.26627  00 47 03.17   +29 28 56.8   21.1R 07RH283   675  Cw9865      
2007 10  04.15470  00 43 37.6    +29 16 25.3         07RH283   688 YCw9865      
2007 10  04.21506  00 43 36.8    +29 16 22.0         07RH283   688 YCw9865      
2007 10  04.27573  00 43 36.1    +29 16 18.3         07RH283   688 YCw9865      
2007 11  17.13895  00 36 04.2    +28 14 58.6         07RH283   688 YCw9865      
2007 11  17.19821  00 36 03.7    +28 14 52.7         07RH283   688 YCw9865      
2007 11  17.24912  00 36 03.4    +28 14 47.6         07RH283   688 YCw9865      
2008 08  30.97579  01 08 45.98   +31 05 19.0   21.4V 07RH283   A74  Cz5249      
2008 08  31.01910  01 08 45.60   +31 05 18.8   21.5V 07RH283   A74  Cz5249      
2008 08  31.06253  01 08 45.24   +31 05 19.3   21.3V 07RH283   A74  Cz5249      
2008 10  23.78720  00 59 04.42   +30 33 07.5   21.2V 07RH283   A74  C~00QX      
2008 10  23.81970  00 59 04.03   +30 33 05.7   21.1V 07RH283   A74  C~00QX      
2008 10  23.85761  00 59 03.50   +30 33 03.9   21.1V 07RH283   A74  C~00QX      
2009 01  29.161134 00 55 08.07   +28 28 57.7   21.3V 07RH283   645  C~1rRH      
2009 01  29.161956 00 55 08.07   +28 28 57.7         07RH283   645  C~1rRH      
2009 01  29.164444 00 55 08.09   +28 28 57.7         07RH283   645  C~1rRH      
2009 10  17.427894 01 19 21.03   +32 07 00.1   20.9V 07RH283   645  C~1rRH      
2009 10  17.428727 01 19 21.02   +32 07 00.1   20.9V 07RH283   645  C~1rRH      
2009 10  17.431215 01 19 21.00   +32 07 00.0   20.9V 07RH283   645  C~1rRH      
2011 01  09.08264  01 28 20.89   +31 27 41.5   21.4R 07RH283   695  C~0U4U      
2011 01  09.14807  01 28 20.98   +31 27 37.0         07RH283   695  C~0U4U      
2015 10  11.29528  03 07 19.44   +36 28 41.4   21.7R 07RH283   695  C~1hU6      
2015 10  11.34059  03 07 18.95   +36 28 41.0         07RH283   695  C~1hU6      
2015 10  11.39190  03 07 18.46   +36 28 41.1         07RH283   695  C~1hU6      

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    -0.41       0.00    -0.34
  2   0.8929      0.00     0.66       0.00     0.33
  3   0.8930      0.00     0.45       0.00     0.09
  4   7.9324      0.00     0.19       0.00     0.32
  5   7.9325      0.00    -0.22       0.00     0.25
  6  18.2941      0.00     0.49       0.00    -0.26
  7  18.2941      0.00     0.50       0.00    -0.23
  8  18.2941      0.00     0.23       0.00    -0.23
  9  18.4142      0.00     0.69       0.00    -0.62
 10  18.4142      0.00     0.41       0.00    -0.35
 11  18.4143      0.00     0.41       0.00     0.11
 12  19.2692      0.00     0.01       0.00     0.18
 13  19.2692      0.00    -0.03       0.00     0.18
 14  19.2692      0.00     0.34       0.00     0.18
 15  19.2718      0.00     0.13       0.00     0.11
 16  19.2718      0.00     0.05       0.00     0.33
 17  19.2718      0.00    -0.45       0.00     0.07
 18  19.2909      0.00    -0.33       0.00    -0.04
 19  19.2909      0.00    -0.58       0.00     0.44
 20  19.2909      0.00     0.03       0.00     0.30
 21  19.2909      0.00     0.20       0.00     0.25
 22  19.2909      0.00    -0.63       0.00    -0.23
 23  19.2909      0.00    -0.33       0.00     0.39
 24  19.3234      0.00    -0.23       0.00     0.04
 25  19.3235      0.00     0.06       0.00    -0.21
 26  19.3236      0.00     0.01       0.00    -0.17
 27  19.3456      0.00    -0.22       0.00     0.59
 28  19.3456      0.00     0.49       0.00     0.79
 29  19.3457      0.00     0.50       0.00     0.36
 30  19.4052      0.00     0.30       0.00     0.18
 31  19.4053      0.00    -0.08       0.00     0.06
 32  19.4053      0.00    -0.14       0.00     0.29
 33  19.4053      0.00     0.23       0.00    -0.43
 34  19.4054      0.00     0.80       0.00     0.26
 35  21.3357      0.00     0.36       0.00     0.17
 36  21.3358      0.00     0.42       0.00     0.53
 37  21.3360      0.00     0.26       0.00     0.61
 38  24.3556      0.00    -0.77       0.00     0.19
 39  24.3558      0.00     0.50       0.00    -0.16
 40  24.3582      0.00    -0.70       0.00     0.06
 41  24.3583      0.00     0.11       0.00     0.01
 42  24.4073      0.00     0.76       0.00     0.06
 43  24.4075      0.00    -0.41       0.00     0.19
 44  24.4076      0.00     0.02       0.00    -0.03
 45  24.5277      0.00     0.31       0.00    -0.15
 46  24.5279      0.00    -0.51       0.00    -0.24
 47  24.5280      0.00     0.71       0.00    -0.32
 48  25.3158      0.00     0.60       0.00     0.09
 49  25.3159      0.00     0.26       0.00    -0.68
 50  25.3160      0.00     0.25       0.00    -0.74
 51  25.4631      0.00     0.01       0.00    -0.56
 52  25.4632      0.00    -0.30       0.00     0.16
 53  25.4633      0.00    -1.78       0.00     1.31
 54  25.7297      0.00     0.59       0.00    -0.35
 55  25.7297      0.00     0.48       0.00    -0.33
 56  25.7297      0.00     0.47       0.00    -0.26
 57  26.4450      0.00     0.40       0.00    -0.05
 58  26.4450      0.00     0.40       0.00     0.00
 59  26.4450      0.00     0.54       0.00     0.06
 60  27.6734      0.00    -0.11       0.00     0.27
 61  27.6736      0.00    -0.04       0.00     0.22
 62  32.4269      0.00     0.49       0.00     0.29
 63  32.4270      0.00    -0.16       0.00     0.22
 64  32.4271      0.00     0.10       0.00     0.72

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.

07RH283    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        15.983    15.983    15.982
ecceobj         0.340     0.340     0.340
incobj         21.356    21.356    21.356
qmin            9.349     9.444    10.517
qmax           23.984    28.852    22.139
amean          16.021    16.674    16.131
amin           15.557    15.518    15.685
amax           17.101    19.504    16.500
emean           0.367     0.397     0.334
emin            0.323     0.307     0.320
emax            0.408     0.479     0.349
imean          22.097    21.114    23.341
imin           18.918    18.615    22.842
imax           23.655    23.493    23.580
excite_mean     0.527     0.539     0.518
fracstop        0.006     0.005     0.001
cjmean          3.139     3.085     3.135

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       119.4     128.3     190.2
kozaiamp        178.9     177.7     178.8