Event between (29981) 99TD10 and star GA1040:02995441 with event index number of 1806952
Geocentric closest approach at 2028/01/02 12:20:17 UTC
J2000 position of star is 07:50:08.5 +15:15:06
Equinox of date position of star is 07:51:30.5 +15:11:21
Stellar brightness G=14.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 133 degrees from the moon.
Moon is 27% illuminated.
Apparent brightness V=24.8
[RECON map]
Object is 39.8 AU from the Sun
and 38.9 AU from the Earth.
Apparent velocity is 25.7
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 330 seconds.
The 1-sigma cross-track error in the shadow position is
3382 km.
The sky-plane scale is
28178.2 km/arcsec.
The object has an absolute magnitude Hv=8.8
Diameter=109.7 km assuming a 5% albedo -- 4.1 sec chord
Diameter=44.8 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 29981, (2028/01/02 12:20UT) Object RA Dec mag sep mel Pollux 07:47:01.8 +27:57:22 1.1 12.82 129 5 Cnc 08:03:05.8 +16:22:34 5.9 2.99 136 PPM 124502 07:52:06.3 +14:46:07 7.6 0.42 133 PPM 124489 07:51:21.4 +15:02:04 8.7 0.17 133 29981 07:51:43.6 +15:10:45 14.6 134 Positions are for equinox of date
This table contains the target star visibility for the RECON
network. The observing range has been set to a maximum of
2.7 sigma about the mid-time.
The median site spacing is 20.5 km
RECON observability=1.0 and success probability=10.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 12:18:30 | -25.3 | Dark | Down | 28.6 | 257.8 | Low | 12:03:30 - 12:33:30 | -3025 |
| Kamloops | 12:18:46 | -34.3 | Dark | Down | 37.5 | 245.6 | Up | 12:03:46 - 12:33:46 | -3425 |
| Kelowna | 12:18:42 | -33.8 | Dark | Down | 37.3 | 247.0 | Up | 12:03:42 - 12:33:42 | -3465 |
| Peachland | 12:18:42 | -34.0 | Dark | Down | 37.5 | 246.8 | Up | 12:03:42 - 12:33:42 | -3479 |
| Summerland | 12:18:41 | -33.9 | Dark | Down | 37.5 | 247.0 | Up | 12:03:41 - 12:33:41 | -3488 |
| Penticton | 12:18:41 | -33.8 | Dark | Down | 37.5 | 247.1 | Up | 12:03:41 - 12:33:41 | -3490 |
| Oliver | 12:18:40 | -33.9 | Dark | Down | 37.6 | 247.4 | Up | 12:03:40 - 12:33:40 | -3516 |
| Anarchist Mountain Observatory | 12:18:39 | -33.8 | Dark | Down | 37.6 | 247.7 | Up | 12:03:39 - 12:33:39 | -3524 |
| Okanogan | 12:18:38 | -33.9 | Dark | Down | 38.0 | 247.9 | Up | 12:03:38 - 12:33:38 | -3577 |
| Brewster | 12:18:37 | -34.1 | Dark | Down | 38.2 | 247.9 | Up | 12:03:37 - 12:33:37 | -3602 |
| Manson/Chelan | 12:18:37 | -34.3 | Dark | Down | 38.5 | 247.7 | Up | 12:03:37 - 12:33:37 | -3626 |
| Victoria | 12:18:45 | -36.4 | Dark | Down | 40.2 | 244.1 | Up | 12:03:45 - 12:33:45 | -3650 |
| Wenatchee | 12:18:36 | -34.5 | Dark | Down | 38.8 | 247.9 | Up | 12:03:36 - 12:33:36 | -3666 |
| Ellensburg | 12:18:35 | -34.7 | Dark | Down | 39.1 | 248.0 | Up | 12:03:35 - 12:33:35 | -3702 |
| Yakima | 12:18:34 | -34.7 | Dark | Down | 39.3 | 248.3 | Up | 12:03:34 - 12:33:34 | -3734 |
| PNWRO | 12:18:29 | -33.6 | Dark | Down | 38.4 | 250.3 | Up | 12:03:29 - 12:33:29 | -3741 |
| Toppenish/White Swan | 12:18:34 | -34.6 | Dark | Down | 39.2 | 248.6 | Up | 12:03:34 - 12:33:34 | -3747 |
| The Dalles | 12:18:33 | -35.2 | Dark | Down | 40.0 | 248.5 | Up | 12:03:33 - 12:33:33 | -3826 |
| Dunrhomin | 12:17:50 | -23.2 | Dark | Down | 30.0 | 264.8 | Low | 12:02:50 - 12:32:50 | -3852 |
| Maupin | 12:18:31 | -35.1 | Dark | Down | 40.1 | 248.9 | Up | 12:03:31 - 12:33:31 | -3857 |
| Nikitin | 12:17:50 | -23.2 | Dark | Down | 30.0 | 264.9 | Low | 12:02:50 - 12:32:50 | -3867 |
| CU-SBO | 12:17:50 | -23.2 | Dark | Down | 30.1 | 264.9 | Up | 12:02:50 - 12:32:50 | -3874 |
| Sisters | 12:18:29 | -35.5 | Dark | Down | 40.8 | 249.1 | Up | 12:03:29 - 12:33:29 | -3938 |
| Bend | 12:18:29 | -35.3 | Dark | Down | 40.7 | 249.6 | Up | 12:03:29 - 12:33:29 | -3951 |
| Oregon Observatory | 12:18:28 | -35.4 | Dark | Down | 40.8 | 249.6 | Up | 12:03:28 - 12:33:28 | -3968 |
| Chiloquin | 12:18:26 | -35.7 | Dark | Down | 41.6 | 250.3 | Up | 12:03:26 - 12:33:26 | -4086 |
| Klamath Falls | 12:18:25 | -35.7 | Dark | Down | 41.6 | 250.6 | Up | 12:03:25 - 12:33:25 | -4113 |
| Cedarville | 12:18:19 | -34.5 | Dark | Down | 40.7 | 252.6 | Up | 12:03:19 - 12:33:19 | -4131 |
| Fall River/Burney | 12:18:21 | -35.4 | Dark | Down | 41.8 | 252.0 | Up | 12:03:21 - 12:33:21 | -4202 |
| Gimple | 12:18:17 | -35.0 | Dark | Down | 41.7 | 253.2 | Up | 12:03:17 - 12:33:17 | -4265 |
| Greenville | 12:18:18 | -35.1 | Dark | Down | 41.7 | 253.1 | Up | 12:03:18 - 12:33:18 | -4267 |
| Portola | 12:18:16 | -34.7 | Dark | Down | 41.5 | 253.8 | Up | 12:03:16 - 12:33:16 | -4283 |
| Quincy | 12:18:17 | -35.1 | Dark | Down | 41.8 | 253.3 | Up | 12:03:17 - 12:33:17 | -4284 |
| Reno | 12:18:14 | -34.2 | Dark | Down | 41.1 | 254.5 | Up | 12:03:14 - 12:33:14 | -4289 |
| Carson City | 12:18:12 | -34.1 | Dark | Down | 41.1 | 254.8 | Up | 12:03:12 - 12:33:12 | -4319 |
| Yerington | 12:18:11 | -33.6 | Dark | Down | 40.7 | 255.5 | Up | 12:03:11 - 12:33:11 | -4319 |
| Gardnerville | 12:18:12 | -34.1 | Dark | Down | 41.2 | 255.1 | Up | 12:03:12 - 12:33:12 | -4339 |
| Hawthorne | 12:18:09 | -33.2 | Dark | Down | 40.4 | 256.3 | Up | 12:03:09 - 12:33:09 | -4345 |
| Lee Vining | 12:18:08 | -33.6 | Dark | Down | 40.9 | 256.4 | Up | 12:03:08 - 12:33:08 | -4407 |
| Beatty | 12:18:01 | -31.6 | Dark | Down | 39.4 | 259.0 | Up | 12:03:01 - 12:33:01 | -4437 |
| Bishop | 12:18:05 | -32.9 | Dark | Down | 40.5 | 257.4 | Up | 12:03:05 - 12:33:05 | -4440 |
| Patrick | 12:17:51 | -29.1 | Dark | Down | 37.3 | 262.2 | Up | 12:02:51 - 12:32:51 | -4488 |
| Laughlin/Bullhead City | 12:17:52 | -29.7 | Dark | Down | 37.9 | 261.9 | Up | 12:02:52 - 12:32:52 | -4529 |
| George/Scottsdale | 12:17:43 | -27.2 | Dark | Down | 35.9 | 264.7 | Up | 12:02:43 - 12:32:43 | -4582 |
| Lake Havasu City | 12:17:50 | -29.4 | Dark | Down | 37.8 | 262.6 | Up | 12:02:50 - 12:32:50 | -4582 |
| Idyllwild | 12:17:52 | -31.2 | Dark | Down | 39.9 | 261.6 | Up | 12:02:52 - 12:32:52 | -4716 |
| Wildwood | 12:17:57 | -32.8 | Dark | Down | 41.4 | 260.1 | Up | 12:02:57 - 12:32:57 | -4736 |
| Calipatria | 12:17:49 | -30.1 | Dark | Down | 39.0 | 262.9 | Up | 12:02:49 - 12:32:49 | -4738 |
| Yuma | 12:17:46 | -29.3 | Dark | Down | 38.3 | 263.8 | Up | 12:02:46 - 12:32:46 | -4752 |
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 29981, (2028/01/02 12:20UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 12.82 129 5 Cnc 08:01:30.2 +16:27:19 5.9 2.99 136 PPM 124502 07:50:31.5 +14:50:29 7.6 0.42 133 PPM 124489 07:49:46.4 +15:06:24 8.7 0.17 133 29981 07:50:08.5 +15:15:06 14.6 133 Positions are for J2000
Event circumstances last updated at 2024/02/25 04:12:14 UT
Marc W. Buie, Southwest Research Institute