Event between (32532) Thereus and star GA0840:03831654 with event index number of 1007536
Geocentric closest approach at 2020/10/29 13:16:23 UTC
J2000 position of star is 09:42:46.7 -04:39:55
Equinox of date position of star is 09:43:48.9 -04:45:38
Stellar brightness G=15.8,
use SENSEUP=128
Star is 131 degrees from the moon.
Moon is 96% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 12.3 AU from the Sun
and 12.6 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
8.0 arcsec/hr.
The 1-sigma error in the time of the event is 31 seconds.
The 1-sigma cross-track error in the shadow position is
563 km.
The sky-plane scale is
9157.5 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=91.2 km assuming a 5% albedo -- 3.0 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 32532, (2020/10/29 13:16UT) Object RA Dec mag sep mel Regulus 10:09:28.7 +11:51:53 1.3 17.81 136 Alphard 09:28:36.7 -08:45:00 2.0 5.49 127 33 Hya 09:35:35.0 -06:00:32 5.6 2.40 129 PPM 192687 09:45:33.2 -04:45:14 8.2 0.43 131 PPM 192659 09:43:58.5 -05:01:24 9.0 0.26 131 32532 09:43:49.4 -04:45:40 15.8 131 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
5.0 sigma about the mid-time.
The median site spacing is 27.1 km
RECON observability=0.5 and success probability=32.8%
| 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 | 13:12:24 | -15.0 | AT | Down | 29.8 | 146.7 | Low | 13:09:19 - 13:15:29 | 1072 |
| Kelowna | 13:12:24 | -15.1 | AT | Down | 30.1 | 146.4 | Up | 13:09:19 - 13:15:29 | 1036 |
| Niwot | 13:13:14 | -3.4 | CT | Down | 43.4 | 160.3 | Up | 13:10:09 - 13:16:19 | 1016 |
| Peachland | 13:12:24 | -15.3 | AT | Down | 30.1 | 146.0 | Up | 13:09:19 - 13:15:29 | 1015 |
| Summerland | 13:12:24 | -15.2 | AT | Down | 30.2 | 146.1 | Up | 13:09:19 - 13:15:29 | 1007 |
| Penticton | 13:12:24 | -15.1 | AT | Down | 30.3 | 146.2 | Up | 13:09:19 - 13:15:29 | 1007 |
| SwRI | 13:13:15 | -3.4 | CT | Down | 43.4 | 160.2 | Up | 13:10:10 - 13:16:20 | 1002 |
| Oliver | 13:12:24 | -15.1 | AT | Down | 30.6 | 146.1 | Up | 13:09:19 - 13:15:29 | 980 |
| Anarchist Mountain Observatory | 13:12:25 | -15.0 | AT | Down | 30.8 | 146.2 | Up | 13:09:20 - 13:15:30 | 975 |
| Tonasket | 13:12:25 | -15.0 | AT | Down | 31.1 | 146.0 | Up | 13:09:20 - 13:15:30 | 948 |
| Okanogan | 13:12:25 | -15.1 | AT | Down | 31.3 | 145.8 | Up | 13:09:20 - 13:15:30 | 915 |
| Brewster | 13:12:24 | -15.2 | AT | Down | 31.4 | 145.4 | Up | 13:09:19 - 13:15:29 | 885 |
| Manson/Chelan | 13:12:24 | -15.4 | AT | Down | 31.5 | 145.0 | Up | 13:09:19 - 13:15:29 | 852 |
| Entiat | 13:12:24 | -15.5 | AT | Down | 31.6 | 144.8 | Up | 13:09:19 - 13:15:29 | 832 |
| Wenatchee | 13:12:23 | -15.5 | AT | Down | 31.8 | 144.6 | Up | 13:09:18 - 13:15:28 | 807 |
| Pasco | 13:12:27 | -14.6 | AT | Down | 33.2 | 145.5 | Up | 13:09:22 - 13:15:32 | 771 |
| Ellensburg | 13:12:23 | -15.6 | AT | Down | 32.0 | 144.2 | Up | 13:09:18 - 13:15:28 | 765 |
| PNWRO | 13:12:28 | -14.4 | AT | Down | 33.5 | 145.7 | Up | 13:09:23 - 13:15:33 | 762 |
| Victoria | 13:12:16 | -17.7 | AT | Down | 29.6 | 141.7 | Low | 13:09:11 - 13:15:21 | 762 |
| Yakima | 13:12:23 | -15.6 | AT | Down | 32.4 | 144.1 | Up | 13:09:18 - 13:15:28 | 732 |
| Toppenish/White Swan | 13:12:24 | -15.5 | AT | Down | 32.6 | 144.2 | Up | 13:09:19 - 13:15:29 | 722 |
| Goldendale | 13:12:23 | -15.8 | AT | Down | 32.9 | 143.5 | Up | 13:09:18 - 13:15:28 | 658 |
| The Dalles | 13:12:23 | -16.0 | AT | Down | 32.9 | 143.0 | Up | 13:09:18 - 13:15:28 | 623 |
| Maupin | 13:12:23 | -15.9 | AT | Down | 33.3 | 143.0 | Up | 13:09:18 - 13:15:28 | 594 |
| Redmond | 13:12:24 | -15.9 | AT | Down | 34.0 | 142.5 | Up | 13:09:19 - 13:15:29 | 516 |
| Sisters | 13:12:23 | -16.2 | AT | Down | 33.8 | 142.1 | Up | 13:09:18 - 13:15:28 | 499 |
| Bend | 13:12:24 | -16.0 | AT | Down | 34.1 | 142.3 | Up | 13:09:19 - 13:15:29 | 492 |
| Oregon Observatory | 13:12:23 | -16.1 | AT | Down | 34.1 | 142.0 | Up | 13:09:18 - 13:15:28 | 472 |
| La Pine/Gilchrist | 13:12:23 | -16.1 | AT | Down | 34.3 | 141.9 | Up | 13:09:18 - 13:15:28 | 452 |
| North Lake | 13:12:25 | -15.6 | AT | Down | 34.9 | 142.4 | Up | 13:09:20 - 13:15:30 | 445 |
| Paisley | 13:12:27 | -15.3 | AT | Down | 35.5 | 142.5 | Up | 13:09:22 - 13:15:32 | 417 |
| Lakeview | 13:12:28 | -15.1 | AT | Down | 36.0 | 142.5 | Up | 13:09:23 - 13:15:33 | 384 |
| Cedarville | 13:12:29 | -14.9 | AT | Down | 36.6 | 142.4 | Up | 13:09:24 - 13:15:34 | 339 |
| Klamath Falls | 13:12:24 | -16.2 | AT | Down | 35.3 | 141.0 | Up | 13:09:19 - 13:15:29 | 318 |
| Fall River/Burney | 13:12:26 | -15.8 | AT | Down | 36.4 | 140.9 | Up | 13:09:21 - 13:15:31 | 238 |
| Susanville | 13:12:29 | -15.2 | AT | Down | 37.2 | 141.4 | Up | 13:09:24 - 13:15:34 | 222 |
| Tonopah | 13:12:42 | -12.2 | AT | Down | 40.8 | 144.2 | Up | 13:09:37 - 13:15:47 | 204 |
| Reno | 13:12:32 | -14.5 | AT | Down | 38.3 | 141.9 | Up | 13:09:27 - 13:15:37 | 192 |
| Gimple | 13:12:29 | -15.3 | AT | Down | 37.4 | 141.0 | Up | 13:09:24 - 13:15:34 | 188 |
| DCO | 13:12:59 | -8.5 | NT | Down | 45.1 | 147.7 | Up | 13:09:54 - 13:16:04 | 186 |
| Greenville | 13:12:29 | -15.4 | AT | Down | 37.3 | 140.9 | Up | 13:09:24 - 13:15:34 | 184 |
| Portola | 13:12:30 | -15.0 | AT | Down | 37.8 | 141.3 | Up | 13:09:25 - 13:15:35 | 181 |
| Yerington | 13:12:35 | -13.9 | AT | Down | 39.1 | 142.4 | Up | 13:09:30 - 13:15:40 | 179 |
| Patrick | 13:12:56 | -9.1 | NT | Down | 44.5 | 146.9 | Up | 13:09:51 - 13:16:01 | 170 |
| Hawthorne | 13:12:37 | -13.4 | AT | Down | 39.7 | 142.8 | Up | 13:09:32 - 13:15:42 | 168 |
| Quincy | 13:12:29 | -15.4 | AT | Down | 37.5 | 140.8 | Up | 13:09:24 - 13:15:34 | 167 |
| Indian Springs | 13:12:49 | -10.8 | NT | Down | 42.7 | 145.3 | Up | 13:09:44 - 13:15:54 | 165 |
| Carson City | 13:12:33 | -14.4 | AT | Down | 38.6 | 141.8 | Up | 13:09:28 - 13:15:38 | 163 |
| Henderson | 13:12:52 | -10.1 | NT | Down | 43.4 | 145.9 | Up | 13:09:47 - 13:15:57 | 159 |
| George/Scottsdale | 13:13:06 | -7.1 | NT | Down | 46.8 | 148.6 | Up | 13:10:01 - 13:16:11 | 148 |
| Gardnerville | 13:12:33 | -14.4 | AT | Down | 38.8 | 141.7 | Up | 13:09:28 - 13:15:38 | 145 |
| Kingman/Dolan Springs | 13:12:56 | -9.2 | NT | Down | 44.6 | 146.6 | Up | 13:09:51 - 13:16:01 | 142 |
| Beatty | 13:12:45 | -11.7 | NT | Down | 41.9 | 144.1 | Up | 13:09:40 - 13:15:50 | 133 |
| Searchlight/Boulder City | 13:12:53 | -10.0 | NT | Down | 43.9 | 145.6 | Up | 13:09:48 - 13:15:58 | 116 |
| Laughlin/Bullhead City | 13:12:54 | -9.7 | NT | Down | 44.4 | 145.9 | Up | 13:09:49 - 13:15:59 | 110 |
| Lee Vining | 13:12:36 | -13.7 | AT | Down | 39.9 | 141.9 | Up | 13:09:31 - 13:15:41 | 95 |
| Mohave Valley | 13:12:55 | -9.6 | NT | Down | 44.6 | 145.8 | Up | 13:09:50 - 13:16:00 | 88 |
| Bishop | 13:12:39 | -13.1 | AT | Down | 40.7 | 142.5 | Up | 13:09:34 - 13:15:44 | 83 |
| Lake Havasu City | 13:12:56 | -9.3 | NT | Down | 45.0 | 145.9 | Up | 13:09:51 - 13:16:01 | 69 |
| Parker | 13:12:57 | -9.2 | NT | Down | 45.3 | 145.7 | Up | 13:09:52 - 13:16:02 | 42 |
| Blythe | 13:12:57 | -9.4 | NT | Down | 45.6 | 145.0 | Up | 13:09:52 - 13:16:02 | -18 |
| Yuma | 13:12:59 | -9.3 | NT | Down | 46.4 | 144.4 | Up | 13:09:54 - 13:16:04 | -97 |
| Calipatria | 13:12:55 | -10.1 | NT | Down | 45.6 | 143.6 | Up | 13:09:50 - 13:16:00 | -113 |
| Idyllwild | 13:12:50 | -11.2 | NT | Down | 44.5 | 142.5 | Up | 13:09:45 - 13:15:55 | -129 |
| Wildwood | 13:12:44 | -12.8 | AT | Down | 43.2 | 140.4 | Up | 13:09:39 - 13:15:49 | -204 |
| CPSLO | 13:12:36 | -14.7 | AT | Down | 41.2 | 138.7 | Up | 13:09:31 - 13:15:41 | -213 |
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 32532, (2020/10/29 13:16UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 17.81 136 Alphard 09:27:35.2 -08:39:30 2.0 5.49 127 33 Hya 09:34:32.7 -05:54:55 5.6 2.40 129 PPM 192687 09:44:30.4 -04:39:26 8.2 0.43 131 PPM 192659 09:42:55.8 -04:55:39 9.0 0.26 131 32532 09:42:46.7 -04:39:55 15.8 131 Positions are for J2000
Event circumstances last updated at 2020/08/28 21:48:08 UT
Marc W. Buie, Southwest Research Institute