Orbit Fit and Astrometric record for 15RR278

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: 15RR278   
# Created Fri Dec  3 02:13:29 2021
# Orbit generated from Bernstein formalism
# Fitting     34 observations of     34
# Arc:   2.36y
# First observation: 2015/07/14
#  Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000120   0.031130   0.000008  -0.000523   0.029157   0.000000
# Chi-squared of fit:    16.82 DOF:     62 RMS:  0.12
# Min/Max residuals:    -0.32    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.711774E-05  3.070171E-02 -1.589637E-06 -5.152736E-04  2.897388E-02  3.994686E-03
# Covariance matrix:
  1.6440E-13 -3.3055E-14 -2.5175E-15 -4.6031E-16  1.0985E-13  5.7057E-13
 -3.3055E-14  4.4092E-13 -3.9688E-15 -2.4337E-15  2.5611E-13  9.3391E-12
 -2.5175E-15 -3.9688E-15  1.0076E-13 -7.4314E-14 -5.6893E-15 -8.8072E-14
 -4.6031E-16 -2.4337E-15 -7.4314E-14  9.4197E-14 -2.0275E-15 -6.3979E-14
  1.0985E-13  2.5611E-13 -5.6893E-15 -2.0275E-15  2.9618E-13  6.1677E-12
  5.7057E-13  9.3391E-12 -8.8072E-14 -6.3979E-14  6.1677E-12  2.5653E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.531660   12.046352    1.002909    0.007704   -0.171945  2457218.063999
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:           84.45192 +/-     0.070
Argument of Peri:       13.39541 +/-     0.052
Long of Asc Node:      261.09019 +/-     0.012
Inclination:             2.66804 +/-     0.000
Eccentricity:         0.09938125 +/-    0.0005
Semi-Major Axis:     34.68583928 +/-    0.0044
Time of Perihelion: 2439706.6426 +/-      14.2
Perihelion:          31.23871718 +/-    0.0181
Aphelion:            38.13296138 +/-    0.0183
Period (y)              204.2850 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.09492438 +/-    0.0006
Ecliptic Y            6.25150149 +/-    0.0001
Ecliptic Z            1.52452270 +/-    0.0000
Ecliptic XDOT        -0.00023685 +/-    0.0000
Ecliptic YDOT         0.00291010 +/-    0.0000
Ecliptic ZDOT        -0.00003191 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.69681986 +/-    0.0006
Geocenter to KBO     34.51384038 +/-    0.0006
# Hcoef:  9.67

The following table shows the complete astrometric record for 15RR278. 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 (15RR278) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.56321  00 40 19.762  +07 05 31.16  25.1r 15RR278   568  C~2lVR      
2015 07  19.54121  00 40 18.048  +07 05 41.85  25.3r 15RR278   568  C~2lVR      
2015 08  19.55891  00 39 12.461  +07 00 48.24  25.2r 15RR278   568  C~2lVR      
2015 08  20.43431  00 39 09.368  +07 00 30.85  24.9r 15RR278   568  C~2lVR      
2015 08  20.48358  00 39 09.196  +07 00 30.09  25.3r 15RR278   568  C~2lVR      
2015 09  07.58083  00 37 53.412  +06 53 15.48  25.3w 15RR278   568  C~2lVR      
2015 09  09.40852  00 37 44.703  +06 52 23.37  25.4r 15RR278   568  C~2lVR      
2015 09  09.44963  00 37 44.502  +06 52 22.22  24.9r 15RR278   568  C~2lVR      
2015 09  09.49055  00 37 44.299  +06 52 21.08  25.1r 15RR278   568  C~2lVR      
2015 09  10.51481  00 37 39.335  +06 51 51.27  25.3w 15RR278   568  C~2lVR      
2015 09  18.47788  00 36 59.288  +06 47 47.61  24.1w 15RR278   568  C~2lVR      
2015 10  08.36567  00 35 13.381  +06 36 35.76  24.7w 15RR278   568  C~2lVR      
2015 10  08.41827  00 35 13.089  +06 36 33.91  25.3w 15RR278   568  C~2lVR      
2015 10  09.33525  00 35 08.179  +06 36 01.64  25.3w 15RR278   568  C~2lVR      
2015 12  08.25463  00 31 17.821  +06 08 19.62  25.3w 15RR278   568  C~2lVR      
2016 01  01.31705  00 31 15.897  +06 06 03.59  25.5w 15RR278   568  C~2lVR      
2016 01  02.26815  00 31 17.157  +06 06 06.77  26.0w 15RR278   568  C~2lVR      
2016 09  05.48236  00 44 40.538  +07 34 12.62  25.5w 15RR278   568  C~2lVR      
2016 09  05.50664  00 44 40.428  +07 34 11.95  25.6w 15RR278   568  C~2lVR      
2016 09  05.57499  00 44 40.106  +07 34 09.95  25.2w 15RR278   568  C~2lVR      
2016 09  06.43656  00 44 36.175  +07 33 46.99  26.0w 15RR278   568  C~2lVR      
2016 09  06.46082  00 44 36.050  +07 33 46.17  25.2w 15RR278   568  C~2lVR      
2016 09  06.47701  00 44 35.970  +07 33 45.75  25.6w 15RR278   568  C~2lVR      
2016 09  06.50211  00 44 35.847  +07 33 45.14  25.2w 15RR278   568  C~2lVR      
2016 09  06.52410  00 44 35.755  +07 33 44.65  25.3w 15RR278   568  C~2lVR      
2016 09  06.56619  00 44 35.558  +07 33 43.40  25.0w 15RR278   568  C~2lVR      
2016 09  26.43941  00 42 55.524  +07 23 36.24  25.2w 15RR278   568  C~2lVR      
2016 09  27.47990  00 42 49.965  +07 23 01.64  25.4w 15RR278   568  C~2lVR      
2016 11  04.28877  00 39 36.437  +07 01 44.05        15RR278   568  C~2lVR      
2016 11  04.34801  00 39 36.172  +07 01 42.13        15RR278   568  C~2lVR      
2016 12  29.27436  00 37 44.070  +06 45 47.33  25.3w 15RR278   568  C~2lVR      
2017 09  16.52330  00 50 28.594  +08 08 51.35  24.8w 15RR278   568  C~2lVR      
2017 09  22.47675  00 49 58.231  +08 05 47.72  25.5w 15RR278   568  C~2lVR      
2017 11  22.34591  00 45 05.673  +07 33 25.59  24.6w 15RR278   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    -0.07       0.00     0.27
     2   0.0136    -19.28     0.19      19.84    -0.26
     3   0.0986  -1032.56     0.16     132.79     0.25
     4   0.1009  -1081.74    -0.26     134.87    -0.20
     5   0.1011  -1084.40    -0.07     135.18    -0.07
     6   0.1506  -2292.91     0.01     178.88     0.02
     7   0.1556  -2432.66    -0.05     181.97    -0.01
     8   0.1557  -2435.87    -0.03     182.09     0.02
     9   0.1559  -2439.09    -0.03     182.23     0.06
    10   0.1587  -2518.80    -0.05     183.90     0.03
    11   0.1805  -3163.12    -0.32     194.59     0.22
    12   0.2349  -4878.62     0.16     198.83     0.06
    13   0.2351  -4883.35     0.09     198.85     0.07
    14   0.2376  -4963.35    -0.09     198.06    -0.10
    15   0.4016  -8779.03     0.05      29.04    -0.14
    16   0.4675  -8859.42    -0.08     -84.59    -0.17
    17   0.4701  -8840.87     0.25     -89.12    -0.09
    18   1.1469   4244.48    -0.02      67.87     0.02
    19   1.1470   4242.71     0.02      67.89    -0.02
    20   1.1472   4237.52    -0.08      67.91    -0.16
    21   1.1496   4174.72     0.19      69.56    -0.03
    22   1.1496   4172.68    -0.02      69.53    -0.12
    23   1.1497   4171.42    -0.06      69.60    -0.08
    24   1.1497   4169.50    -0.09      69.75     0.01
    25   1.1498   4168.05     0.11      69.84     0.04
    26   1.1499   4164.86     0.10      69.83    -0.07
    27   1.2043   2557.70     0.12      91.44     0.12
    28   1.2072   2468.05     0.10      91.90     0.26
    29   1.3107   -682.35     0.03      44.03     0.06
    30   1.3108   -686.73     0.03      43.81    -0.04
    31   1.4612  -2597.11    -0.14    -178.47    -0.01
    32   2.1765   9824.44     0.04     -24.28     0.07
    33   2.1928   9336.58     0.01     -19.23    -0.04
    34   2.3594   4570.50    -0.20    -121.13     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.

15RR278    quality flag:3

Type:           5:4E      5:4E      5:4E

axisobj        34.979    34.995    34.963
ecceobj         0.101     0.102     0.100
incobj          2.669     2.669     2.669
qmin           30.454    30.451    30.512
qmax           39.850    39.686    39.803
amean          34.943    34.943    34.943
amin           34.603    34.610    34.580
amax           35.317    35.283    35.333
emean           0.107     0.108     0.107
emin            0.087     0.088     0.087
emax            0.129     0.126     0.127
imean           4.162     4.153     4.226
imin            2.415     2.296     2.473
imax            5.557     5.717     5.405
excite_mean     0.130     0.131     0.131
fracstop        1.000     1.000     1.000
cjmean          2.998     2.998     2.998

libcent 0       180.2     179.1     180.5
libamp  0        74.0      66.5      83.5
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       182.0     182.2     177.9
kozaiamp        179.9     180.0     180.0