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: 15RH280
# Created Sun Apr 27 01:10:34 2025
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 2.44y
# First observation: 2015/07/14
# Last observation: 2017/12/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000037 0.025696 0.000002 -0.000891 0.024920 0.000000
# Chi-squared of fit: 12.74 DOF: 54 RMS: 0.12
# Min/Max residuals: -0.35 0.27
# Exact a, adot, b, bdot, g, gdot:
1.767048E-05 2.523360E-02 -7.061924E-07 -8.777011E-04 2.458857E-02 -7.888703E-04
# Covariance matrix:
2.2057E-13 2.8126E-14 -1.3152E-15 -3.4541E-15 1.7522E-13 2.1483E-12
2.8126E-14 3.8853E-13 7.6814E-16 -1.4603E-14 2.7383E-13 8.9678E-12
-1.3152E-15 7.6814E-16 1.0635E-13 -6.7715E-14 -9.8597E-16 3.3477E-14
-3.4541E-15 -1.4603E-14 -6.7715E-14 7.8584E-14 -1.1749E-14 -4.2922E-13
1.7522E-13 2.7383E-13 -9.8597E-16 -1.1749E-14 3.3866E-13 7.2440E-12
2.1483E-12 8.9678E-12 3.3477E-14 -4.2922E-13 7.2440E-12 2.6338E-10
# lat0 lon0 xBary yBary zBary JD0
1.387056 11.606846 1.001546 0.004456 -0.179818 2457218.068079
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 330.41922 +/- 0.244
Argument of Peri: 181.06995 +/- 0.317
Long of Asc Node: 225.32850 +/- 0.008
Inclination: 2.39873 +/- 0.001
Eccentricity: 0.10475669 +/- 0.0004
Semi-Major Axis: 44.80266481 +/- 0.0047
Time of Perihelion: 2466210.8885 +/- 74.4
Perihelion: 40.10928590 +/- 0.0183
Aphelion: 49.49604373 +/- 0.0185
Period (y) 299.8914 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 40.20008272 +/- 0.0009
Ecliptic Y 7.23560473 +/- 0.0002
Ecliptic Z 0.98447723 +/- 0.0000
Ecliptic XDOT -0.00065128 +/- 0.0000
Ecliptic YDOT 0.00272874 +/- 0.0000
Ecliptic ZDOT -0.00009976 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.85792239 +/- 0.0009
Geocenter to KBO 40.66929662 +/- 0.0010
# Hcoef: 9.00
The following table shows the complete astrometric record for 15RH280. 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 (15RH280) followed by the observatory code and reference code for the source of the astrometry.
2015 07 14.56729 00 40 30.484 +05 52 00.49 25.5r 15RH280 568 C~2nvp 2015 07 19.54532 00 40 28.934 +05 51 59.01 25.2r 15RH280 568 C~2nvp 2015 08 11.54916 00 39 54.548 +05 48 54.94 26.0r 15RH280 568 C~2nvp 2015 09 08.41317 00 38 22.534 +05 39 34.73 24.9r 15RH280 568 C~2nvp 2015 09 08.51862 00 38 22.087 +05 39 32.07 24.9r 15RH280 568 C~2nvp 2015 09 08.56094 00 38 21.916 +05 39 30.97 25.1r 15RH280 568 C~2nvp 2015 09 09.53652 00 38 17.945 +05 39 06.03 25.0w 15RH280 568 C~2nvp 2015 09 10.47732 00 38 14.084 +05 38 41.63 24.8w 15RH280 568 C~2nvp 2015 09 16.46890 00 37 48.735 +05 36 01.88 25.7w 15RH280 568 C~2nvp 2015 10 07.36274 00 36 14.617 +05 25 56.12 25.5r 15RH280 568 C~2nvp 2015 10 07.41585 00 36 14.363 +05 25 54.39 25.2r 15RH280 568 C~2nvp 2015 11 07.26021 00 34 05.064 +05 11 27.74 25.2w 15RH280 568 C~2nvp 2015 11 07.31308 00 34 04.871 +05 11 26.43 25.4w 15RH280 568 C~2nvp 2015 11 10.39917 00 33 54.144 +05 10 11.87 24.9w 15RH280 568 C~2nvp 2015 12 07.33665 00 32 49.190 +05 02 12.55 15RH280 568 C~2nvp 2016 01 01.26556 00 32 44.752 +05 00 35.46 25.7w 15RH280 568 C~2nvp 2016 09 05.50258 00 44 02.318 +06 12 09.39 24.7w 15RH280 568 C~2nvp 2016 09 06.45678 00 43 58.592 +06 11 46.70 25.0w 15RH280 568 C~2nvp 2016 09 06.49805 00 43 58.430 +06 11 45.61 24.8w 15RH280 568 C~2nvp 2016 09 26.45968 00 42 32.774 +06 02 45.65 25.8w 15RH280 568 C~2nvp 2016 11 03.49128 00 39 46.130 +05 44 30.11 25.7w 15RH280 568 C~2nvp 2016 11 04.27124 00 39 43.204 +05 44 10.08 25.2w 15RH280 568 C~2nvp 2016 11 04.33051 00 39 42.981 +05 44 08.51 25.2w 15RH280 568 C~2nvp 2016 12 29.26796 00 38 06.003 +05 31 39.77 25.4w 15RH280 568 C~2nvp 2017 01 03.23891 00 38 10.401 +05 31 54.05 25.6w 15RH280 568 C~2nvp 2017 09 15.43089 00 48 55.687 +06 39 38.86 25.1w 15RH280 568 C~2nvp 2017 09 16.51398 00 48 51.060 +06 39 09.97 25.3w 15RH280 568 C~2nvp 2017 09 22.46739 00 48 25.044 +06 36 26.64 24.8w 15RH280 568 C~2nvp 2017 09 22.49605 00 48 24.926 +06 36 25.92 25.1w 15RH280 568 C~2nvp 2017 12 23.28322 00 43 29.595 +06 02 53.80 25.5w 15RH280 568 C~2nvp
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 -0.30 0.00 0.03
2 0.0136 -21.86 -0.03 7.70 0.07
3 0.0766 -566.07 -0.06 39.39 -0.01
4 0.1529 -2049.11 0.14 62.75 0.01
5 0.1532 -2056.30 -0.01 62.93 0.08
6 0.1533 -2059.08 0.03 62.92 0.03
7 0.1560 -2123.39 -0.01 63.25 -0.03
8 0.1585 -2185.98 -0.07 63.44 -0.17
9 0.1750 -2596.78 0.15 65.12 -0.07
10 0.2322 -4127.42 0.11 60.49 0.03
11 0.2323 -4131.59 -0.04 60.39 -0.06
12 0.3167 -6249.35 0.04 24.21 0.04
13 0.3169 -6252.51 0.03 24.14 0.04
14 0.3253 -6429.34 -0.02 18.79 0.04
15 0.3991 -7511.41 0.18 -38.92 -0.05
16 0.4673 -7610.79 -0.25 -102.01 0.12
17 1.1470 3381.33 -0.18 -122.71 -0.22
18 1.1496 3321.30 0.19 -121.92 0.17
19 1.1497 3318.65 0.22 -121.98 0.06
20 1.2044 1931.48 0.27 -120.13 -0.11
21 1.3085 -785.45 -0.35 -155.00 0.01
22 1.3106 -833.48 -0.05 -156.31 0.03
23 1.3108 -837.16 0.01 -156.45 -0.04
24 1.4612 -2462.61 -0.04 -277.20 0.01
25 1.4748 -2396.60 0.12 -289.85 -0.10
26 2.1735 8055.15 0.06 -304.92 0.04
27 2.1764 7980.30 -0.02 -304.80 -0.00
28 2.1927 7559.06 -0.17 -304.86 -0.00
29 2.1928 7557.16 0.03 -304.84 0.00
30 2.4441 2714.99 0.01 -443.76 0.05
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.
15RH280 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.292 45.303 45.282 ecceobj 0.113 0.113 0.112 incobj 2.392 2.392 2.392 qmin 39.203 39.188 39.241 qmax 51.147 51.159 51.059 amean 45.006 45.017 44.997 amin 44.633 44.653 44.634 amax 45.410 45.414 45.396 emean 0.111 0.112 0.111 emin 0.097 0.097 0.096 emax 0.126 0.127 0.125 imean 3.817 3.812 3.820 imin 3.166 3.160 3.175 imax 4.444 4.443 4.449 excite_mean 0.130 0.130 0.129 fracstop 1.000 1.000 1.000 cjmean 3.093 3.093 3.093 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 182.2 182.2 182.2 kozaiamp 180.0 180.0 180.0