Orbit Fit and Astrometric record for 15RV278

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: 15RV278   
# Created Fri Dec  3 02:13:29 2021
# Orbit generated from Bernstein formalism
# Fitting     28 observations of     28
# Arc:   2.36y
# First observation: 2015/07/14
#  Last observation: 2017/11/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000094   0.029183   0.000002  -0.004621   0.026391   0.000000
# Chi-squared of fit:     5.47 DOF:     50 RMS:  0.08
# Min/Max residuals:    -0.14    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.748653E-05  2.886259E-02 -3.358100E-06 -4.589675E-03  2.622132E-02  5.035943E-03
# Covariance matrix:
  1.7170E-13  4.2972E-14 -9.2081E-16 -1.6058E-14  1.5784E-13  1.8763E-12
  4.2972E-14  5.9342E-13  1.1839E-14 -1.0620E-13  4.1696E-13  1.2268E-11
 -9.2081E-16  1.1839E-14  9.9819E-14 -7.1250E-14  5.0939E-15  3.5750E-13
 -1.6058E-14 -1.0620E-13 -7.1250E-14  1.2064E-13 -7.8698E-14 -2.7634E-12
  1.5784E-13  4.1696E-13  5.0939E-15 -7.8698E-14  4.3763E-13  9.1201E-12
  1.8763E-12  1.2268E-11  3.5750E-13 -2.7634E-12  9.1201E-12  3.1883E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.915750   12.846492    1.005228    0.008138   -0.157803  2457218.059109
# Heliocentric elements and errors
Epoch:              2457210.5000  =  2015/07/07
Mean Anomaly:           22.53344 +/-     0.054
Argument of Peri:      122.13628 +/-     0.115
Long of Asc Node:      209.20265 +/-     0.001
Inclination:             9.38820 +/-     0.001
Eccentricity:         0.27428901 +/-    0.0005
Semi-Major Axis:     50.15231495 +/-    0.0152
Time of Perihelion: 2449090.4262 +/-      19.2
Perihelion:          36.39608624 +/-    0.0270
Aphelion:            63.90854365 +/-    0.0314
Period (y)              355.1769 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.50813260 +/-    0.0009
Ecliptic Y            7.52380442 +/-    0.0002
Ecliptic Z            1.93985288 +/-    0.0001
Ecliptic XDOT        -0.00013657 +/-    0.0000
Ecliptic YDOT         0.00305410 +/-    0.0000
Ecliptic ZDOT        -0.00045179 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.30444717 +/-    0.0009
Geocenter to KBO     38.13690630 +/-    0.0010
# Hcoef:  8.30

The following table shows the complete astrometric record for 15RV278. 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 (15RV278) followed by the observatory code and reference code for the source of the astrometry.

2015 07  14.55832  00 42 41.329  +07 45 30.44  25.1r 15RV278   568  C~2lVS      
2015 07  19.53712  00 42 40.554  +07 45 36.12  24.3r 15RV278   568  C~2lVS      
2015 08  13.50040  00 42 02.929  +07 42 21.64  23.8r 15RV278   568  C~2lVS      
2015 08  19.56300  00 41 45.985  +07 40 40.90  24.7r 15RV278   568  C~2lVS      
2015 08  20.43842  00 41 43.353  +07 40 24.65  23.9r 15RV278   568  C~2lVS      
2015 08  20.48764  00 41 43.195  +07 40 23.67  24.0r 15RV278   568  C~2lVS      
2015 09  07.58494  00 40 37.144  +07 33 29.07  24.4w 15RV278   568  C~2lVS      
2015 09  09.41265  00 40 29.505  +07 32 39.66  24.2r 15RV278   568  C~2lVS      
2015 09  09.45371  00 40 29.343  +07 32 38.51  24.3r 15RV278   568  C~2lVS      
2015 09  09.49464  00 40 29.162  +07 32 37.46  24.2r 15RV278   568  C~2lVS      
2015 09  10.51893  00 40 24.803  +07 32 09.03  24.4w 15RV278   568  C~2lVS      
2015 09  18.48318  00 39 49.576  +07 28 17.28  24.3w 15RV278   568  C~2lVS      
2015 10  08.37093  00 38 15.898  +07 17 36.72  21.8w 15RV278   568  C~2lVS      
2015 10  08.42353  00 38 15.625  +07 17 34.94  24.4w 15RV278   568  C~2lVS      
2015 10  09.34050  00 38 11.286  +07 17 04.21  24.5w 15RV278   568  C~2lVS      
2015 12  08.26533  00 34 45.667  +06 49 35.40  24.6w 15RV278   568  C~2lVS      
2016 01  02.27874  00 34 45.261  +06 46 21.12  24.7w 15RV278   568  C~2lVS      
2016 09  05.48236  00 47 21.564  +07 58 38.13        15RV278   568  C~2lVS      
2016 09  06.43656  00 47 17.732  +07 58 13.68        15RV278   568  C~2lVS      
2016 09  06.47701  00 47 17.563  +07 58 12.61        15RV278   568  C~2lVS      
2016 09  26.43941  00 45 49.268  +07 48 30.70  24.6w 15RV278   568  C~2lVS      
2016 11  04.28877  00 42 52.598  +07 27 32.24        15RV278   568  C~2lVS      
2016 11  04.34801  00 42 52.371  +07 27 30.38        15RV278   568  C~2lVS      
2016 12  29.29357  00 41 12.166  +07 10 55.70  24.4w 15RV278   568  C~2lVS      
2017 01  02.32887  00 41 15.919  +07 10 50.23  24.7w 15RV278   568  C~2lVS      
2017 09  16.52330  00 53 12.550  +08 17 43.85  24.4w 15RV278   568  C~2lVS      
2017 09  22.47675  00 52 45.886  +08 14 48.24  24.1w 15RV278   568  C~2lVS      
2017 11  22.34591  00 48 26.477  +07 43 45.25  24.3w 15RV278   568  C~2lVS      

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    -0.02       0.00     0.12
     2   0.0136     -8.38    -0.03       9.74    -0.01
     3   0.0820   -599.12    -0.04      49.77     0.11
     4   0.0986   -870.33    -0.14      55.78     0.16
     5   0.1010   -912.69     0.16      56.16    -0.07
     6   0.1011   -915.24     0.10      56.18    -0.12
     7   0.1507  -1981.24    -0.10      59.97     0.01
     8   0.1557  -2105.12    -0.11      59.12     0.11
     9   0.1558  -2107.79     0.09      59.01    -0.01
    10   0.1559  -2110.68     0.06      59.10     0.08
    11   0.1587  -2181.46    -0.01      58.40    -0.03
    12   0.1805  -2754.35    -0.14      51.04    -0.02
    13   0.2349  -4287.95     0.18      10.22    -0.10
    14   0.2351  -4292.39    -0.08      10.18    -0.02
    15   0.2376  -4363.87     0.06       7.35    -0.14
    16   0.4017  -7830.14     0.03    -299.95     0.02
    17   0.4701  -7912.65    -0.03    -476.13    -0.10
    18   1.1470   4141.89     0.03    -899.32    -0.11
    19   1.1496   4079.91     0.01    -899.70     0.04
    20   1.1497   4077.18    -0.02    -899.71     0.03
    21   1.2043   2641.85     0.04    -924.97     0.01
    22   1.3107   -267.78    -0.04   -1057.78     0.05
    23   1.3109   -271.61     0.09   -1058.17    -0.09
    24   1.4613  -2033.04    -0.07   -1389.38     0.00
    25   1.4723  -1983.80    -0.01   -1416.31     0.01
    26   2.1765   9396.95    -0.03   -1862.03     0.05
    27   2.1928   8963.17     0.03   -1871.35    -0.02
    28   2.3594   4684.08    -0.01   -2097.21     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.

15RV278    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        50.815    50.868    50.762
ecceobj         0.283     0.285     0.282
incobj          9.356     9.355     9.356
qmin           35.873    35.496    35.799
qmax           65.689    66.149    65.739
amean          50.416    50.445    50.416
amin           49.886    49.863    49.898
amax           51.075    51.104    51.048
emean           0.276     0.277     0.278
emin            0.266     0.261     0.268
emax            0.287     0.296     0.289
imean          10.079    10.652     9.907
imin            9.674     9.796     9.578
imax           10.434    11.457    10.274
excite_mean     0.327     0.333     0.327
fracstop        1.000     1.000     1.000
cjmean          3.046     3.041     3.046

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       186.0     186.4     186.4
kozaiamp        180.0     180.0     180.0