"Pseudo-MPEC" for 2026 ED138
Created 2026 Oct 28 20:46:34 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
Astrometry:
K26ED8D CK100318:084510420251.0256946 -45.4879897 W W91
K26ED8D CK100318:084717320251.0257039 -45.4880080 W W91
K26ED8D CK100318:090147320251.0256591 -45.4880851 W W91
K26ED8D CK100318:090400270251.0256492 -45.4881054 W W91
K26ED8D CK100325:071950820250.9917020 -45.5390767 W W91
K26ED8D CK100325:072052770250.9916987 -45.5390739 W W91
K26ED8D CK100325:072156070250.9917016 -45.5390791 W W91
K26ED8D CK100802:043405630248.3773578 -45.3203746 W W91
K26ED8D CK100802:043512890248.3773698 -45.3203656 W W91
K26ED8D CK100802:044125510248.3773051 -45.3203369 W W91
K26ED8D CK100802:044232260248.3772913 -45.3203278 W W91
K26ED8D CK110701:034625950250.5679946 -45.5694997 W W91
K26ED8D CK110701:034735690250.5679788 -45.5694844 W W91
K26ED8D CK110701:035349000250.5678840 -45.5694662 W W91
K26ED8D CK110701:035457860250.5678485 -45.5694573 W W91
K26ED8D UCK160225:074948737260.3187519 -44.7826230 19.75VWEU085W84
K26ED8D UCK160225:075131778260.3187745 -44.7826351 19.76VWEU085W84
K26ED8D UCK160225:075314899260.3187903 -44.7826461 19.74VWEU085W84
K26ED8D UCK160225:075459036260.3187980 -44.7826574 19.73VWEU085W84
K26ED8D UCK160811:023759639257.8336367 -44.9161799 19.38iWEU085W84
K26ED8D UCK160811:023858597257.8336257 -44.9161732 19.26zWEU085W84
K26ED8D UCK160811:023957784257.8336280 -44.9161708 19.21YWEU085W84
K26ED8D UCK160824:035021409257.7360115 -44.8086511 20.27gWEU085W84
K26ED8D UCK160824:035152354257.7359814 -44.8086388 19.64rWEU085W84
K26ED8D UCK160824:035856880257.7359532 -44.8085991 19.67rWEU085W84
K26ED8D UCK160824:040029424257.7359842 -44.8085970 20.25gWEU085W84
K26ED8D UCK160825:042849826257.7317654 -44.8000678 20.23gWEU085W84
K26ED8D UCK160826:043740399257.7280846 -44.7916420 19.63rWEU085W84
K26ED8D UCK160826:043911457257.7281019 -44.7916334 20.28gWEU085W84
K26ED8D UCK170504:055710328261.5597919 -45.0599636 19.12YWEU085W84
K26ED8D UCK170504:055808801261.5597833 -45.0599611 19.20zWEU085W84
K26ED8D UCK170504:055907451261.5597653 -45.0599684 19.29iWEU085W84
K26ED8D UCK170504:060601663261.5596721 -45.0599819 19.29iWEU085W84
K26ED8D UCK170504:060659680261.5596548 -45.0599803 19.18zWEU085W84
K26ED8D UCK170504:060758400261.5596465 -45.0599880 19.03YWEU085W84
K26ED8D UCK170504:074447998261.5583237 -45.0602510 19.59rWEU085W84
K26ED8D UCK170504:074618803261.5582925 -45.0602640 20.21gWEU085W84
K26ED8D UCK170504:075431170261.5581905 -45.0602605 20.21gWEU085W84
K26ED8D UCK170504:075602493261.5581644 -45.0602680 19.57rWEU085W84
K26ED8D UCK170702:014744650260.1349406 -45.0432077 19.55VWEU085W84
K26ED8D UCK170702:014927878260.1349088 -45.0432022 19.56VWEU085W84
K26ED8D UCK170702:015111497260.1348795 -45.0431965 19.55VWEU085W84
K26ED8D UCK170702:015256058260.1348521 -45.0431889 19.57VWEU085W84
K26ED8D UCK170703:021418016260.1104213 -45.0387656 19.61VWEU085W84
K26ED8D UCK170703:021600596260.1103923 -45.0387557 19.61VWEU085W84
K26ED8D UCK170703:021744091260.1103632 -45.0387480 19.63VWEU085W84
K26ED8D UCK170703:021927940260.1103360 -45.0387467 19.61VWEU085W84
K26ED8D UCK180512:093018503262.9473439 -44.9080449 19.19zWEU085W84
K26ED8D UCK180512:093118127262.9473351 -44.9080449 19.32iWEU085W84
K26ED8D UCK180519:081641797262.7943405 -44.9255037 20.22gWEU085W84
K26ED8D UCK180519:081813377262.7943040 -44.9255042 19.55rWEU085W84
K26ED8D UCK190428:100453716264.7398643 -44.6549333 19.12YWEU085W84
K26ED8D UCK190430:081909205264.7089166 -44.6639005 19.15YWEU085W84
K26ED8D UCK190430:082007297264.7088969 -44.6639087 19.25zWEU085W84
K26ED8D UCK190430:082106626264.7088858 -44.6639064 19.34iWEU085W84
K26ED8D UCK190501:091348837264.6916101 -44.6685837 19.14YWEU085W84
K26ED8D UCK190501:091447980264.6916117 -44.6685946 19.24zWEU085W84
K26ED8D UCK190501:091546639264.6916290 -44.6685956 x19.36iWEU085W84
K26ED8D UCK230407:061102982270.8309540 -43.5573462 19.41zWEU085W84
K26ED8D*2CK260304:093314740274.7906291 -42.4543647 19.31LWEU085X05
K26ED8D 2CK260304:093507430274.7906470 -42.4543812 19.28LWEU085X05
K26ED8D 2CK260331:082806437275.0026189 -42.6096994 19.41LWEU085X05
K26ED8D 2CK260331:090012636275.0026441 -42.6098348 19.41LWEU085X05
K26ED8D 2CK260416:075643520274.9631508 -42.7055538 21.94LWEU085X05
K26ED8D 2CK260501:061330864274.8202383 -42.7885683 19.32LWEU085X05
K26ED8D 2CK260502:060312753274.8074060 -42.7936882 19.35LWEU085X05
K26ED8D 2CK260512:100013800274.6542322 -42.8423077 19.45LWEU085X05
K26ED8D 2CK260513:084409855274.6380746 -42.8464499 19.28LWEU085X05
K26ED8D 2CK260513:084449694274.6380717 -42.8464509 19.28LWEU085X05
K26ED8D 2CK260517:091523458274.5661101 -42.8631783 21.92LWEU085X05
K26ED8D 2CK260518:091925007274.5473351 -42.8671390 21.77LWEU085X05
K26ED8D 2CK260522:085935799274.4698391 -42.8819353 20.26LWEU085X05
K26ED8D 2CK260522:090022411274.4698273 -42.8819401 20.23LWEU085X05
K26ED8D 2CK260523:072907215274.4509893 -42.8852067 x19.58LWEU085X05
K26ED8D 2CK260523:081034593274.4504135 -42.8852918 19.36LWEU085X05
K26ED8D 2CK260525:081142945274.4093250 -42.8919531 19.43LWEU085X05
K26ED8D 2CK260525:081621493274.4092572 -42.8919625 19.67LWEU085X05
K26ED8D 2CK260527:054828054274.3694115 -42.8979098 19.24LWEU085X05
K26ED8D 2CK260527:054920707274.3694008 -42.8979164 19.25LWEU085X05
K26ED8D 2CK260530:043131162274.3058211 -42.9064128 19.05LWEU085X05
K26ED8D 2CK260531:050915433274.2831986 -42.9091496 19.26LWEU085X05
K26ED8D 2CK260605:040917783274.1710311 -42.9207871 19.23LWEU085X05
K26ED8D 2CK260605:040959858274.1710207 -42.9207888 19.23LWEU085X05
K26ED8D 2CK260612:070352137274.0027490 -42.9326467 19.37LWEU085X05
K26ED8D 2CK260627:052348332273.6353771 -42.9376950 19.31LWEU085X05
K26ED8D 2CK260709:040454331273.3429974 -42.9219206 19.39LWEU085X05
K26ED8D 2CK260709:044907024273.3422495 -42.9218574 19.63LWEU085X05
K26ED8D 2CK260711:064324161273.2926341 -42.9173097 19.68LWEU085X05
K26ED8D 2CK260711:072114542273.2920220 -42.9172443 20.35LWEU085X05
Station data:
(W84) Cerro Tololo-DECam (S30.169661 W70.806525) Chile. Measurer S. Deen. 4.0-m
reflector + CCD.
(W91) VHS-VISTA, Cerro Paranal (S24.615838 W70.397430) Chile. Measurer S.
Deen. 4.1-m f/3.26 reflector + CCD.
(X05) Simonyi Survey Telescope, Rubin Observatory (S30.244600 W70.749420)
Chile. 8.4-m f/1.234 Modified Paul-Baker + CCD.
Orbital elements: 2026 ED138
Perihelion 1926 Feb 17.953679 +/- 0.24903 TT = 22:53:17.8 (JD 2424564.453679)
Epoch 2026 Jul 11.0 TT = JDT 2461232.5 Gray
M 128.373013038 +/- 0.001256 (J2000.0)
n 0.003500950 +/- 1.8888e-8 Peri. 168.018112 +/- 0.001042
a 42.95483683 +/- 0.00015449 Node 322.499744 +/- 2.0703e-5
e 0.14169189 +/- 2.6808e-6 Incl. 24.471408 +/- 6.4126e-6
P 281.52574 H 2.92 G 0.15 U 1.5
q 36.86848477 +/- 0.00022527 Q 49.04118889 +/- 0.00013377
87 of 89 observations 2010 Mar. 18-2026 July 11; mean residual 0".024/0.65 sigmas
Residuals in arcseconds:
100318 W91 .013- .043+ 170504 W84 .007+ .028+ 260304 X05 .008+ .030-
100318 W91 .023+ .018+ 170504 W84 .005- .011+ 260331 X05 .005- .001-
100318 W91 .000 .019+ 170504 W84 .003- .027+ 260331 X05 .002+ .004+
100318 W91 .011- .011- 170504 W84 .013- .042+ 260416 X05 .079+ .071+
100325 W91 .005- .010- 170504 W84 .001- .023+ 260501 X05 .006- .014+
100325 W91 .001- .019+ 170504 W84 .012- .026- 260502 X05 .005+ .011+
100325 W91 .019+ .019+ 170504 W84 .039- .059- 260512 X05 .003+ .005-
100802 W91 .014- .005+ 170504 W84 .014- .029+ 260513 X05 .011- .003-
100802 W91 .037+ .012+ 170504 W84 .028- .016+ 260513 X05 .003+ .001+
100802 W91 .007- .025- 170702 W84 .019- .005+ 260517 X05 .061+ .016+
100802 W91 .021- .017- 170702 W84 .025- .007+ 260518 X05 .005+ .013-
110701 W91 .044- .024- 170702 W84 .024- .009+ 260522 X05 .009- .010-
110701 W91 .036- .013+ 170702 W84 .019- .018+ 260522 X05 .011- .020-
110701 W91 .021- .020- 170703 W84 .017- .005- 260523 X05(.019- .041-)
110701 W91 .064- .006- 170703 W84 .017- .012+ 260523 X05 .030+ .004+
160225 W84 .038- .007- 170703 W84 .017- .021+ 260525 X05 .003- .006+
160225 W84 .017- .017- 170703 W84 .011- .007+ 260525 X05 .002- .009+
160225 W84 .014- .024- 180512 W84 .004+ .007- 260527 X05 .005- .007+
160225 W84 .032- .031- 180512 W84 .019+ .000 260527 X05 .002+ .010-
160811 W84 .015- .004- 180519 W84 .013+ .009- 260530 X05 .019+ .029-
160811 W84 .024- .000 180519 W84 .017- .003- 260531 X05 .002+ .005+
160811 W84 .001+ .012- 190428 W84 .017- .033- 260605 X05 .004- .018+
160824 W84 .067+ .010+ 190430 W84 .019+ .012+ 260605 X05 .002- .015+
160824 W84 .003+ .022+ 190430 W84 .003- .007- 260612 X05 .003- .003+
160824 W84 .012- .014+ 190430 W84 .002- .013+ 260627 X05 .011- .000
160824 W84 .080+ .011- 190501 W84 .004- .007- 260709 X05 .006- .002+
160825 W84 .080+ .029- 190501 W84 .030+ .036- 260709 X05 .006- .001-
160826 W84 .031+ .027- 190501 W84(.104+ .029-) 260711 X05 .006- .008-
160826 W84 .085+ .029- 230407 W84 .028+ .015+ 260711 X05 .040+ .006-
170504 W84 .004- .010+ 260304 X05 .008+ .004+
Ephemerides (geocentric):
Date (UTC) RA Dec delta r elong SM mag " sig PA
---- ----- ------------ ------------ ------ ------ ----- -- --- --------
2026 10 29 18 11 06.297 -42 14 07.50 47.729 47.224 58.9 g 19.8 5.8m 106
2026 10 30 18 11 10.946 -42 13 43.83 47.743 47.224 58.0 g 19.8 5.7m 106
2026 10 31 18 11 15.689 -42 13 20.37 47.756 47.225 57.1 g 19.8 5.7m 106
2026 11 01 18 11 20.525 -42 12 57.13 47.770 47.225 56.2 g 19.8 5.7m 106
2026 11 02 18 11 25.452 -42 12 34.11 47.783 47.225 55.3 g 19.8 5.6m 107
2026 11 03 18 11 30.469 -42 12 11.32 47.796 47.225 54.4 gA 19.8 5.6m 107
2026 11 04 18 11 35.576 -42 11 48.76 47.809 47.226 53.5 gA 19.8 5.5m 107
2026 11 05 18 11 40.770 -42 11 26.44 47.822 47.226 52.6 gA 19.8 5.5m 108
2026 11 06 18 11 46.052 -42 11 04.36 47.834 47.226 51.7 gA 19.8 5.5m 108
2026 11 07 18 11 51.419 -42 10 42.53 47.847 47.226 50.8 gA 19.8 5.4m 108
2026 11 08 18 11 56.871 -42 10 20.95 47.859 47.227 49.9 gA 19.8 5.4m 109
2026 11 09 18 12 02.405 -42 09 59.63 47.871 47.227 49.0 gA 19.8 5.4m 109
2026 11 10 18 12 08.021 -42 09 38.58 47.883 47.227 48.1 gA 19.8 5.3m 109
2026 11 11 18 12 13.717 -42 09 17.79 47.894 47.227 47.2 gA 19.8 5.3m 110
2026 11 12 18 12 19.491 -42 08 57.27 47.906 47.228 46.3 gA 19.8 5.2m 110
2026 11 13 18 12 25.342 -42 08 37.04 47.917 47.228 45.4 gA 19.8 5.2m 110
2026 11 14 18 12 31.269 -42 08 17.08 47.928 47.228 44.6 gA 19.8 5.1m 111
2026 11 15 18 12 37.269 -42 07 57.41 47.939 47.228 43.7 gA 19.8 5.1m 111
2026 11 16 18 12 43.341 -42 07 38.03 47.949 47.228 42.8 gA 19.8 5.1m 111
2026 11 17 18 12 49.485 -42 07 18.94 47.960 47.229 41.9 gA 19.8 5.0m 112
RA/decs are astrometric J2000 coordinates (corrected for light
time lag, but in the inertial J2000 frame, i.e., not rotated
for precession or nutation, and differential light deflection is
not included.) Display can be turned on/off in the 'advanced
options' for ephemerides. When turning them on, you can select
from various format choices (base-60, decimal, different
precisions, etc.)
Distances are in kilometers for distances under one million km
(about 0.00668 AU), and in AUs for larger distances.
The "SM" (Sun-Moon) flags consist of one or two letters, extended
from a scheme used on JPL's Horizons system. Letters used are :
* Daytime (sun above horizon)
C Civil twilight (sun below horizon, but by less than 6 degrees)
N Nautical twilight (-12 < sun's altitude < -6 degrees)
A Astronomical twilight (-18 < sun's altitude < -12 degrees)
m Moon is in the sky, less than 50% illuminated
M Moon is in the sky, more than 50% illuminated
l Object transiting in front of moon
L Object occulted by moon
a Below altitude/horizon limits set for the observing site
d Outside declination limits for your site/mount
e Outside elongation limits for your site/mount
h Outside hour angle limits for your site/mount
g Some galactic confusion
G Lots of galactic confusion
B Object is below the horizon
Uncertainties are one-sigma values shown in arcseconds (unless they
are very large, in which case they are shown in arcminutes or degrees).
In theory, the object should be within this distance of the nominal
RA/dec 67% of the time, within twice that distance 95% of the time,
and within three times that distance 99.7% of the time. In practice,
astrometric errors are not actually Gaussian, which means these
uncertainties are sometimes over- or underestimated. So you may have
to look farther, or not nearly as far, as the uncertainties say.
The object will probably be offset from nominal somewhere along the
indicated position angle, especially if the orbit is well determined.