Event between 13RU128 and star GA0880:19136587 with event index number of 2463818
Geocentric closest approach at 2021/10/20 08:17:40 UTC
J2000 position of star is 22:38:03.8 -01:14:06
Equinox of date position of star is 22:39:10.9 -01:07:17
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=23.6
[RECON map]
TNO is 40.2 AU from the Sun
and 39.5 AU from the Earth.
The TNO is moving 16.2
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 185 seconds.
The 1-sigma cross-track error in the shadow position is
4032 km.
The sky-plane scale is
28674.4 km/arcsec.
The TNO has an absolute magnitude Hv=7.5
Diameter=151.4 km assuming a 5% albedo -- 11.6 sec chord
Diameter=61.8 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 13RU128, (2021/10/20 08:17UT) Object RA Dec mag sep mel Fomalhaut 22:58:51.0 -29:30:22 1.2 28.77 52 Markab 23:05:50.9 +15:19:23 2.5 17.72 38 62Eta Aqr 22:36:28.6 -00:00:16 4.0 1.31 45 PPM 181489 22:36:13.5 -01:24:42 8.3 0.79 45 PPM 181500 22:38:40.4 -01:07:37 9.7 0.13 45 13RU128 22:39:11.0 -01:07:16 16.9 44 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
4.9 sigma about the mid-time.
The median site spacing is 28.6 km
RECON observability=1.0 and success probability=3.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 08:11:55 | -49.7 | Dark | Up | 21.5 | 239.3 | Low | 07:56:55 - 08:26:55 | 10094 |
| Kelowna | 08:11:52 | -50.1 | Dark | Up | 21.8 | 239.3 | Low | 07:56:52 - 08:26:52 | 10061 |
| Peachland | 08:11:55 | -50.3 | Dark | Up | 22.0 | 239.1 | Low | 07:56:55 - 08:26:55 | 10058 |
| Victoria | 08:12:04 | -51.8 | Dark | Up | 24.7 | 236.3 | Low | 07:57:04 - 08:27:04 | 10049 |
| Summerland | 08:11:56 | -50.4 | Dark | Up | 22.0 | 239.2 | Low | 07:56:56 - 08:26:56 | 10041 |
| Penticton | 08:11:55 | -50.5 | Dark | Up | 22.0 | 239.4 | Low | 07:56:55 - 08:26:55 | 10031 |
| Oliver | 08:11:55 | -50.8 | Dark | Up | 22.2 | 239.5 | Low | 07:56:55 - 08:26:55 | 9997 |
| Anarchist Mountain Observatory | 08:11:53 | -51.0 | Dark | Up | 22.2 | 239.7 | Low | 07:56:53 - 08:26:53 | 9975 |
| Tonasket | 08:11:55 | -51.3 | Dark | Up | 22.4 | 239.8 | Low | 07:56:55 - 08:26:55 | 9946 |
| Okanogan | 08:11:55 | -51.6 | Dark | Up | 22.6 | 239.7 | Low | 07:56:55 - 08:26:55 | 9918 |
| Brewster | 08:11:55 | -51.9 | Dark | Up | 22.9 | 239.7 | Low | 07:56:55 - 08:26:55 | 9897 |
| Manson/Chelan | 08:11:57 | -52.2 | Dark | Up | 23.2 | 239.4 | Low | 07:56:57 - 08:26:57 | 9888 |
| Wenatchee | 08:11:57 | -52.6 | Dark | Up | 23.5 | 239.4 | Low | 07:56:57 - 08:26:57 | 9846 |
| Ellensburg | 08:11:57 | -53.1 | Dark | Up | 23.9 | 239.4 | Low | 07:56:57 - 08:26:57 | 9812 |
| Yakima | 08:11:56 | -53.5 | Dark | Up | 24.1 | 239.5 | Low | 07:56:56 - 08:26:56 | 9773 |
| Toppenish/White Swan | 08:11:57 | -53.7 | Dark | Up | 24.1 | 239.8 | Low | 07:56:57 - 08:26:57 | 9746 |
| Goldendale | 08:11:58 | -54.3 | Dark | Up | 24.6 | 239.6 | Low | 07:56:58 - 08:26:58 | 9705 |
| Pasco | 08:11:52 | -53.6 | Dark | Up | 23.4 | 240.9 | Low | 07:56:52 - 08:26:52 | 9695 |
| The Dalles | 08:11:58 | -54.5 | Dark | Up | 25.0 | 239.4 | Low | 07:56:58 - 08:26:58 | 9694 |
| PNWRO | 08:11:52 | -53.8 | Dark | Up | 23.4 | 241.2 | Low | 07:56:52 - 08:26:52 | 9664 |
| Maupin | 08:11:58 | -54.9 | Dark | Up | 25.1 | 239.7 | Low | 07:56:58 - 08:26:58 | 9650 |
| Sisters | 08:12:00 | -55.9 | Dark | Up | 25.9 | 239.6 | Low | 07:57:00 - 08:27:00 | 9579 |
| Redmond | 08:11:59 | -55.8 | Dark | Up | 25.6 | 239.9 | Low | 07:56:59 - 08:26:59 | 9563 |
| Bend | 08:11:59 | -56.1 | Dark | Up | 25.8 | 239.9 | Low | 07:56:59 - 08:26:59 | 9547 |
| Oregon Observatory | 08:12:00 | -56.3 | Dark | Up | 26.0 | 239.9 | Low | 07:57:00 - 08:27:00 | 9534 |
| La Pine/Gilchrist | 08:11:56 | -56.5 | Dark | Up | 26.1 | 239.9 | Low | 07:56:56 - 08:26:56 | 9516 |
| North Lake | 08:11:58 | -56.8 | Dark | Up | 26.0 | 240.6 | Low | 07:56:58 - 08:26:58 | 9452 |
| Chiloquin | 08:12:01 | -57.6 | Dark | Up | 26.9 | 240.1 | Low | 07:57:01 - 08:27:01 | 9417 |
| Paisley | 08:11:57 | -57.3 | Dark | Up | 26.0 | 241.1 | Low | 07:56:57 - 08:26:57 | 9386 |
| Klamath Falls | 08:12:01 | -57.9 | Dark | Up | 27.0 | 240.3 | Low | 07:57:01 - 08:27:01 | 9380 |
| Lakeview | 08:11:57 | -57.8 | Dark | Up | 26.1 | 241.5 | Low | 07:56:57 - 08:26:57 | 9329 |
| Cedarville | 08:11:57 | -58.4 | Dark | Up | 26.3 | 242.0 | Low | 07:56:57 - 08:26:57 | 9257 |
| Fall River/Burney | 08:12:01 | -59.0 | Dark | Up | 27.3 | 241.2 | Low | 07:57:01 - 08:27:01 | 9250 |
| Susanville | 08:11:59 | -59.6 | Dark | Up | 27.2 | 242.1 | Low | 07:56:59 - 08:26:59 | 9161 |
| Greenville | 08:11:59 | -59.9 | Dark | Up | 27.5 | 241.9 | Low | 07:56:59 - 08:26:59 | 9143 |
| Gimple | 08:12:00 | -59.9 | Dark | Up | 27.4 | 242.0 | Low | 07:57:00 - 08:27:00 | 9140 |
| Quincy | 08:11:59 | -60.1 | Dark | Up | 27.6 | 242.0 | Low | 07:56:59 - 08:26:59 | 9123 |
| Portola | 08:11:59 | -60.1 | Dark | Up | 27.3 | 242.5 | Low | 07:56:59 - 08:26:59 | 9094 |
| Reno | 08:11:57 | -60.3 | Dark | Up | 27.0 | 243.1 | Low | 07:56:57 - 08:26:57 | 9045 |
| Carson City | 08:11:57 | -60.6 | Dark | Up | 27.1 | 243.3 | Low | 07:56:57 - 08:26:57 | 9008 |
| Gardnerville | 08:11:57 | -60.8 | Dark | Up | 27.2 | 243.5 | Low | 07:56:57 - 08:26:57 | 8981 |
| Yerington | 08:11:55 | -60.7 | Dark | Up | 26.8 | 243.9 | Low | 07:56:55 - 08:26:55 | 8967 |
| Hawthorne | 08:11:55 | -61.0 | Dark | Up | 26.6 | 244.5 | Low | 07:56:55 - 08:26:55 | 8901 |
| Lee Vining | 08:11:56 | -61.6 | Dark | Up | 27.2 | 244.4 | Low | 07:56:56 - 08:26:56 | 8860 |
| Tonopah | 08:11:52 | -61.1 | Dark | Up | 25.8 | 245.9 | Low | 07:56:52 - 08:26:52 | 8806 |
| Bishop | 08:11:55 | -62.1 | Dark | Up | 26.9 | 245.3 | Low | 07:56:55 - 08:26:55 | 8774 |
| Dunrhomin | 08:11:24 | -54.6 | Dark | Up | 16.4 | 253.8 | Really Low | 07:56:24 - 08:26:24 | 8706 |
| Beatty | 08:11:52 | -62.1 | Dark | Up | 25.9 | 246.7 | Low | 07:56:52 - 08:26:52 | 8673 |
| CPSLO | 08:12:03 | -64.5 | Dark | Up | 29.4 | 244.5 | Low | 07:57:03 - 08:27:03 | 8645 |
| Indian Springs | 08:11:50 | -62.0 | Dark | Up | 25.3 | 247.7 | Low | 07:56:50 - 08:26:50 | 8604 |
| Henderson | 08:11:48 | -62.3 | Dark | Up | 25.0 | 248.4 | Low | 07:56:48 - 08:26:48 | 8526 |
| Wildwood | 08:11:59 | -65.2 | Dark | Up | 28.4 | 246.7 | Low | 07:56:59 - 08:26:59 | 8447 |
| Patrick | 08:11:41 | -62.4 | Dark | Up | 24.4 | 249.4 | Low | 07:56:41 - 08:26:41 | 8426 |
| Laughlin/Bullhead City | 08:11:47 | -62.9 | Dark | Up | 25.0 | 249.1 | Low | 07:56:47 - 08:26:47 | 8423 |
| Kingman/Dolan Springs | 08:11:47 | -62.7 | Dark | Up | 24.6 | 249.4 | Low | 07:56:47 - 08:26:47 | 8408 |
| Mohave Valley | 08:11:48 | -63.2 | Dark | Up | 25.1 | 249.2 | Low | 07:56:48 - 08:26:48 | 8394 |
| Lake Havasu City | 08:11:48 | -63.4 | Dark | Up | 25.0 | 249.5 | Low | 07:56:48 - 08:26:48 | 8345 |
| Idyllwild | 08:11:54 | -65.0 | Dark | Up | 27.1 | 248.2 | Low | 07:56:54 - 08:26:54 | 8344 |
| Parker | 08:11:48 | -63.7 | Dark | Up | 25.1 | 249.7 | Low | 07:56:48 - 08:26:48 | 8307 |
| Blythe | 08:11:49 | -64.3 | Dark | Up | 25.5 | 249.7 | Low | 07:56:49 - 08:26:49 | 8262 |
| Calipatria | 08:11:52 | -65.1 | Dark | Up | 26.4 | 249.3 | Low | 07:56:52 - 08:26:52 | 8242 |
| George/Scottsdale | 08:11:43 | -63.0 | Dark | Up | 23.4 | 251.5 | Low | 07:56:43 - 08:26:43 | 8187 |
| Yuma | 08:11:50 | -65.1 | Dark | Up | 25.9 | 250.1 | Low | 07:56:50 - 08:26:50 | 8167 |
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 13RU128, (2021/10/20 08:17UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 28.77 52 Markab 23:04:45.8 +15:12:18 2.5 17.72 38 62Eta Aqr 22:35:21.5 -00:07:04 4.0 1.31 45 PPM 181489 22:35:06.2 -01:31:29 8.3 0.79 45 PPM 181500 22:37:33.1 -01:14:26 9.7 0.13 45 13RU128 22:38:03.8 -01:14:06 16.9 44 Positions are for J2000
Event circumstances last updated at 2021/10/05 01:11:19 UT
Marc W. Buie, Southwest Research Institute