Orbit Fit and Astrometric record for 15RP278

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: 15RP278   
# Created Thu Feb 21 02:10:21 2019
# Orbit generated from Bernstein formalism
# Fitting   44 observations of   45
# Arc:   1.88y
# First observation: 2015/07/14
#  Last observation: 2017/05/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000167   0.031299   0.000024   0.003778   0.027906   0.000000
# Chi-squared of fit:    13.42 DOF:   82 RMS:  0.10
# Min/Max residuals:    -0.38    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.730293E-05  3.106177E-02  2.139295E-06  3.785575E-03  2.780046E-02 -5.190850E-04
# Covariance matrix:
  1.3246E-13  6.9215E-14 -5.5134E-15  2.1045E-14  1.5061E-13  3.2361E-12
  6.9215E-14  3.7083E-13 -1.2894E-14  5.6896E-14  2.9702E-13  8.9752E-12
 -5.5134E-15 -1.2894E-14  6.3059E-14 -5.7192E-14 -1.3693E-14 -4.4678E-13
  2.1045E-14  5.6896E-14 -5.7192E-14  1.1251E-13  5.6721E-14  2.1716E-12
  1.5061E-13  2.9702E-13 -1.3693E-14  5.6721E-14  3.4205E-13  8.8532E-12
  3.2361E-12  8.9752E-12 -4.4678E-13  2.1716E-12  8.8532E-12  3.4766E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.636874    9.402607    0.994014    0.006317   -0.217610  2457218.034449
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:          346.80668 +/-     0.161
Argument of Peri:       31.57903 +/-     0.231
Long of Asc Node:      354.83848 +/-     0.001
Inclination:             7.20022 +/-     0.001
Eccentricity:         0.16385003 +/-    0.0002
Semi-Major Axis:     42.97722419 +/-    0.0039
Time of Perihelion: 2460981.9438 +/-      46.1
Perihelion:          35.93540463 +/-    0.0095
Aphelion:            50.01904375 +/-    0.0100
Period (y)              281.7512 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.84648024 +/-    0.0007
Ecliptic Y            4.92939099 +/-    0.0001
Ecliptic Z            1.02763125 +/-    0.0000
Ecliptic XDOT        -0.00056296 +/-    0.0000
Ecliptic YDOT         0.00300156 +/-    0.0000
Ecliptic ZDOT         0.00037126 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.19841250 +/-    0.0007
Geocenter to KBO     35.97063202 +/-    0.0008
# Hcoef:  8.63

The following table shows the complete astrometric record for 15RP278. 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 (15RP278) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.53366  00 31 58.224  +05 13 50.59  24.2r 15RP278   568  C~2lVR      
2015 07  19.49854  00 31 55.394  +05 13 58.67  24.2r 15RP278   568  C~2lVR      
2015 08  11.49021  00 31 12.128  +05 11 17.27  24.2r 15RP278   568  C~2lVR      
2015 08  11.53270  00 31 12.031  +05 11 16.47  24.4r 15RP278   568  C~2lVR      
2015 08  11.55462  00 31 11.934  +05 11 16.42  24.4r 15RP278   568  C~2lVR      
2015 08  13.47989  00 31 06.252  +05 10 48.87  24.3r 15RP278   568  C~2lVR      
2015 08  13.51278  00 31 06.135  +05 10 48.45  24.3r 15RP278   568  C~2lVR      
2015 08  13.53335  00 31 06.045  +05 10 48.06  24.5r 15RP278   568  C~2lVR      
2015 08  19.54254  00 30 46.309  +05 09 09.02  24.2r 15RP278   568  C~2lVR      
2015 08  19.58390  00 30 46.156  +05 09 08.38  24.1r 15RP278   568  C~2lVR      
2015 08  19.61259  00 30 46.031  +05 09 07.99  24.0r 15RP278   568  C~2lVR      
2015 09  07.56274  00 29 28.147  +05 02 05.94  24.2w 15RP278   568  C~2lVR      
2015 09  08.50096  00 29 23.796  +05 01 41.37        15RP278   568  C~2lVR      
2015 09  08.54456  00 29 23.584  +05 01 40.33        15RP278   568  C~2lVR      
2015 09  09.39169  00 29 19.637  +05 01 17.79  24.2r 15RP278   568  C~2lVR      
2015 09  09.43322  00 29 19.442  +05 01 16.77  24.1r 15RP278   568  C~2lVR      
2015 09  09.47414  00 29 19.244  +05 01 15.63  24.2r 15RP278   568  C~2lVR      
2015 09  09.52009  00 29 19.020  +05 01 14.48  23.8w 15RP278   568  C~2lVR      
2015 09  10.46103  00 29 14.583  +05 00 49.33  24.3w 15RP278   568  C~2lVR      
2015 09  16.44783  00 28 45.567  +04 58 03.00  24.2w 15RP278   568  C~2lVR      
2015 09  18.45683  00 28 35.573  +04 57 05.38  24.5w 15RP278   568  C~2lVR      
2015 09  18.49367  00 28 35.391  +04 57 04.31  24.4w 15RP278   568  C~2lVR      
2015 10  03.37463  00 27 19.470  +04 49 36.19  24.1w 15RP278   568  C~2lVR      
2015 10  07.34146  00 26 59.120  +04 47 33.96  24.1r 15RP278   568  C~2lVR      
2015 10  07.35040  00 26 59.068  +04 47 33.61  24.3r 15RP278   568  C~2lVR      
2015 10  07.39952  00 26 58.815  +04 47 32.22  23.9r 15RP278   568  C~2lVR      
2015 11  07.23924  00 24 36.393  +04 32 51.22  24.3w 15RP278   568  C~2lVR      
2015 11  07.29177  00 24 36.182  +04 32 49.92  24.2w 15RP278   568  C~2lVR      
2015 11  10.36966  00 24 24.691  +04 31 36.79  24.1w 15RP278   568  C~2lVR      
2015 12  07.31568  00 23 17.805  +04 24 17.76  24.2w 15RP278   568  C~2lVR      
2016 01  01.24475  00 23 19.918  +04 24 09.60  24.2w 15RP278   568  C~2lVR      
2016 09  05.47427  00 35 54.965  +05 57 42.33        15RP278   568  C~2lVR      
2016 09  06.42847  00 35 50.659  +05 57 18.74        15RP278   568  C~2lVR      
2016 09  06.46893  00 35 50.470  +05 57 17.67        15RP278   568  C~2lVR      
2016 09  26.43130  00 34 12.678  +05 48 00.27  24.2w 15RP278   568  C~2lVR      
2016 09  26.44752  00 34 12.591  +05 47 59.81  24.3w 15RP278   568  C~2lVR      
2016 11  03.39147  00 31 07.486  +05 29 13.20        15RP278   568  C~2lVR      
2016 11  03.45641  00 31 07.201  +05 29 11.64        15RP278   568  C~2lVR      
2016 12  25.23477  00 29 23.787  +05 17 30.26  24.2w 15RP278   568  C~2lVR      
2016 12  25.25214  00 29 23.800  +05 17 30.41  24.3w 15RP278   568  C~2lVR      
2017 01  02.28151  00 29 31.765  +05 18 10.60        15RP278   568  C~2lVR      
2017 01  02.29442  00 29 31.787  +05 18 10.75  24.7w 15RP278   568  C~2lVR      
2017 01  29.24980  00 30 47.013  +05 25 41.60  23.7w 15RP278   568  C~2lVR      
2017 01  30.22034  00 30 51.019  +05 26 06.38  24.4w 15RP278   568  C~2lVR      
2017 05  30.60248  00 42 49.589  +06 46 46.88  24.1w 15RP278   568  C~2lVR      

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     0.08       0.00     0.00
  2   0.0136    -35.67    -0.02      24.09     0.10
  3   0.0765   -693.27    -0.07     130.55    -0.01
  4   0.0767   -694.91     0.25     130.38    -0.38
  5   0.0767   -696.26    -0.08     130.91     0.04
  6   0.0820   -785.13 (   0.45)    139.07 (  -0.16)
  7   0.0821   -786.90     0.29     139.37    -0.02
  8   0.0821   -788.29    -0.09     139.54     0.05
  9   0.0986  -1098.30     0.12     164.83    -0.17
 10   0.0987  -1100.65     0.11     165.14    -0.05
 11   0.0988  -1102.52    -0.14     165.52     0.19
 12   0.1507  -2338.36    -0.02     237.09     0.01
 13   0.1532  -2407.80    -0.07     240.20    -0.02
 14   0.1533  -2411.12    -0.09     240.50     0.10
 15   0.1557  -2474.22    -0.09     243.09    -0.05
 16   0.1558  -2477.30    -0.00     243.30     0.00
 17   0.1559  -2480.47    -0.05     243.42    -0.03
 18   0.1560  -2483.99    -0.06     243.69     0.05
 19   0.1586  -2554.85    -0.03     246.78     0.07
 20   0.1750  -3018.96    -0.02     265.31    -0.14
 21   0.1805  -3178.96    -0.10     271.42     0.05
 22   0.1806  -3181.88    -0.02     271.51     0.02
 23   0.2213  -4401.69     0.01     308.70    -0.08
 24   0.2322  -4729.56     0.01     316.84     0.04
 25   0.2322  -4730.42    -0.09     316.83    -0.00
 26   0.2324  -4734.44    -0.00     317.05     0.10
 27   0.3168  -7040.39     0.10     351.84    -0.01
 28   0.3169  -7043.80     0.02     351.90    -0.01
 29   0.3254  -7230.76    -0.05     352.92    -0.03
 30   0.3991  -8324.66     0.07     346.89     0.12
 31   0.4674  -8298.85     0.11     326.83     0.03
 32   1.1470   4285.08    -0.04    1029.73     0.02
 33   1.1496   4216.71     0.05    1033.25     0.12
 34   1.1497   4213.69     0.01    1033.37     0.08
 35   1.2044   2652.41     0.02    1094.02    -0.08
 36   1.2044   2651.03    -0.00    1094.11    -0.04
 37   1.3083   -332.66    -0.07    1146.63    -0.04
 38   1.3085   -337.18    -0.14    1146.87     0.16
 39   1.4502  -2033.07    -0.00    1112.03    -0.05
 40   1.4503  -2032.84     0.11    1112.09     0.02
 41   1.4723  -1907.66    -0.19    1102.02     0.03
 42   1.4723  -1907.30    -0.10    1102.03     0.05
 43   1.5461   -697.05     0.12    1072.77    -0.10
 44   1.5488   -632.30     0.20    1071.94    -0.17
 45   1.8784  11135.59     0.00    1323.69     0.01

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.

15RP278    quality flag:3

Type:      12:7EEEEE 12:7EEEEE 12:7EEEEE

axisobj        43.450    43.457    43.444
ecceobj         0.173     0.173     0.172
incobj          7.170     7.170     7.170
qmin           35.470    35.400    35.490
qmax           51.285    51.349    51.234
amean          43.129    43.129    43.129
amin           42.727    42.713    42.717
amax           43.581    43.597    43.580
emean           0.165     0.166     0.165
emin            0.154     0.154     0.154
emax            0.177     0.178     0.176
imean           7.180     7.011     7.187
imin            5.516     5.105     5.607
imax            8.333     8.387     8.295
excite_mean     0.208     0.207     0.207
fracstop        1.000     1.000     1.000
cjmean          3.039     3.039     3.039

libcent 0       176.2     180.1     180.1
libamp  0       121.4     151.1     119.2
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       179.9     179.3     183.1
kozaiamp        180.0     179.9     180.0