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: 21LV44
# Created Wed Mar 26 01:11:28 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 1.37y
# First observation: 2021/06/09
# Last observation: 2022/10/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000018 0.036359 -0.000008 -0.004207 0.030965 0.000000
# Chi-squared of fit: 0.22 DOF: 24 RMS: 0.02
# Min/Max residuals: -0.03 0.04
# Exact a, adot, b, bdot, g, gdot:
1.865337E-05 3.681370E-02 -2.120468E-06 -4.351934E-03 3.130639E-02 -2.117418E-03
# Covariance matrix:
3.0953E-13 1.6044E-12 5.0164E-14 -7.5263E-13 1.2186E-12 1.1284E-10
1.6044E-12 6.1842E-11 1.9690E-12 -2.9740E-11 3.9335E-11 4.4419E-09
5.0164E-14 1.9690E-12 2.5012E-13 -1.1060E-12 1.2495E-12 1.4309E-10
-7.5263E-13 -2.9740E-11 -1.1060E-12 1.4734E-11 -1.8866E-11 -2.1622E-09
1.2186E-12 3.9335E-11 1.2495E-12 -1.8866E-11 2.5258E-11 2.8185E-09
1.1284E-10 4.4419E-09 1.4309E-10 -2.1622E-09 2.8185E-09 3.2287E-07
# lat0 lon0 xBary yBary zBary JD0
1.337177 -73.110810 0.488127 0.020470 -0.886166 2459374.942811
# Heliocentric elements and errors
Epoch: 2459370.5000 = 2021/06/05
Mean Anomaly: 341.86175 +/- 3.152
Argument of Peri: 195.80473 +/- 4.885
Long of Asc Node: 116.95720 +/- 0.004
Inclination: 6.84151 +/- 0.002
Eccentricity: 0.18978317 +/- 0.0076
Semi-Major Axis: 39.83724654 +/- 0.1094
Time of Perihelion: 2463997.7748 +/- 803.9
Perihelion: 32.27680764 +/- 0.3167
Aphelion: 47.39768543 +/- 0.3307
Period (y) 251.4445 +/- 1.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 9.07608292 +/- 0.0015
Ecliptic Y -31.55109290 +/- 0.0049
Ecliptic Z 0.74541683 +/- 0.0001
Ecliptic XDOT 0.00303499 +/- 0.0000
Ecliptic YDOT 0.00111110 +/- 0.0000
Ecliptic ZDOT -0.00038500 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.83903760 +/- 0.0047
Geocenter to KBO 31.94236179 +/- 0.0051
# Hcoef: 9.68
The following table shows the complete astrometric record for 21LV44. 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 (21LV44) followed by the observatory code and reference code for the source of the astrometry.
2021 06 09.44201 19 12 31.585 -21 02 43.17 24.8r 21LV44 266 C~6Ip3 2021 06 09.52741 19 12 31.121 -21 02 44.08 24.8r 21LV44 266 C~6Ip3 2021 06 09.61426 19 12 30.650 -21 02 44.97 24.8r 21LV44 266 C~6Ip3 2021 06 17.43605 19 11 47.208 -21 04 11.44 24.6r 21LV44 266 C~6Ip3 2021 06 17.50053 19 11 46.828 -21 04 12.19 24.6r 21LV44 266 C~6Ip3 2021 06 17.57953 19 11 46.364 -21 04 13.09 24.6r 21LV44 266 C~6Ip3 2021 09 06.23258 19 04 42.801 -21 20 08.61 25.0r 21LV44 266 C~6Ip3 2021 09 06.31281 19 04 42.595 -21 20 09.28 25.0r 21LV44 266 C~6Ip3 2021 09 06.39352 19 04 42.391 -21 20 09.93 25.0r 21LV44 266 C~6Ip3 2022 10 21.20926 19 13 49.176 -21 23 04.06 21LV44 266 C~8ebn 2022 10 21.25420 19 13 49.305 -21 23 04.00 21LV44 266 C~8ebn 2022 10 21.29846 19 13 49.434 -21 23 03.93 21LV44 266 C~8ebn 2022 10 23.20599 19 13 55.368 -21 23 01.54 21LV44 266 C~8ebn 2022 10 23.25093 19 13 55.508 -21 23 01.46 21LV44 266 C~8ebn 2022 10 23.29489 19 13 55.647 -21 23 01.37 21LV44 266 C~8ebn
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 -0.01 0.00 -0.02
2 0.0002 -6.56 -0.02 -0.10 -0.02
3 0.0005 -13.21 -0.01 -0.17 -0.01
4 0.0219 -627.35 0.02 -11.04 0.03
5 0.0221 -632.72 0.01 -11.13 0.03
6 0.0223 -639.27 0.02 -11.22 0.03
7 0.2431 -6636.02 -0.01 -266.45 -0.01
8 0.2433 -6638.96 -0.01 -266.80 -0.02
9 0.2435 -6641.87 0.01 -267.12 -0.02
10 1.3656 924.11 -0.01 -1346.81 0.03
11 1.3657 925.91 -0.02 -1346.98 0.03
12 1.3658 927.70 -0.01 -1347.13 0.04
13 1.3710 1010.23 0.02 -1355.20 -0.03
14 1.3711 1012.18 0.01 -1355.37 -0.03
15 1.3713 1014.12 0.01 -1355.52 -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.
21LV44 quality flag:2 Type: 3:2E SCATNEAR 3:2E axisobj 39.301 39.816 38.965 ecceobj 0.182 0.187 0.189 incobj 6.857 6.865 6.848 qmin 31.612 30.546 31.042 qmax 47.788 76.371 48.808 amean 39.456 47.215 39.458 amin 39.045 38.599 38.864 amax 39.927 54.246 40.116 emean 0.181 0.312 0.186 emin 0.164 0.177 0.144 emax 0.198 0.408 0.217 imean 5.522 5.275 6.514 imin 5.016 0.623 3.822 imax 6.205 10.945 9.453 excite_mean 0.205 0.329 0.221 fracstop 1.000 1.000 1.000 cjmean 3.004 3.003 2.995 libcent 0 180.4 -180.0 179.9 libamp 0 70.5 -180.0 142.4 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 177.2 181.7 174.9 kozaiamp 180.0 180.0 180.0