RECON: TNO occultation with 13XU33

Event between 13XU33 and star GA0980:00218154 with event index number of 2677260

Geocentric closest approach at 2024/02/09 02:40:53 UTC

J2000 position of star is 02:33:22.4 +08:38:48
Equinox of date position of star is 02:34:36.0 +08:44:48
Stellar brightness G=13.5, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 90 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=23.3

[RECON map]
Object is 37.5 AU from the Sun and 37.7 AU from the Earth.
Apparent velocity is 11.2 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 169 seconds.
The 1-sigma cross-track error in the shadow position is 1900 km.
The sky-plane scale is 27355.7 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=201.4 km assuming a 5% albedo -- 17.9 sec chord
Diameter=82.2 km assuming a 30% albedo -- 7.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 13XU33, (2024/02/09 02:48UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.4 +16:33:21  0.8 30.88 121
Menkar         03:03:32.6 +04:10:59  2.5  8.50  95
PPM 145746     02:37:51.9 +07:50:01  6.3  1.21  91
PPM 145710     02:35:30.5 +09:05:36  7.8  0.40  91
PPM 145696     02:34:32.6 +08:28:57  9.3  0.27  90
PPM 145699     02:34:37.0 +08:45:37 10.4  0.01  90
13XU33         02:34:39.6 +08:45:06 13.5        91
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 30.2 km RECON observability=0.8 and success probability=25.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 02:46:59 -16.4 AT Down 44.3 210.8 Up 02:32:22 - 03:01:36 1859
Victoria 02:46:37 -14.2 AT Down 47.2 207.6 Up 02:32:00 - 03:01:14 1831
Peachland 02:46:58 -16.7 AT Down 44.9 212.0 Up 02:32:21 - 03:01:35 1759
Kelowna 02:46:59 -16.9 AT Down 44.7 212.4 Up 02:32:22 - 03:01:36 1754
Summerland 02:46:57 -16.8 AT Down 45.0 212.2 Up 02:32:20 - 03:01:34 1742
Penticton 02:46:59 -16.8 AT Down 45.0 212.4 Up 02:32:22 - 03:01:36 1732
Oliver 02:46:57 -16.8 AT Down 45.3 212.6 Up 02:32:20 - 03:01:34 1703
Anarchist Mountain Observatory 02:46:58 -16.9 AT Down 45.4 213.0 Up 02:32:21 - 03:01:35 1681
Okanogan 02:46:54 -16.7 AT Down 46.0 213.0 Up 02:32:17 - 03:01:31 1638
Manson/Chelan 02:46:50 -16.3 AT Down 46.6 212.5 Up 02:32:13 - 03:01:27 1626
Brewster 02:46:52 -16.6 AT Down 46.3 212.9 Up 02:32:15 - 03:01:29 1625
Wenatchee 02:46:48 -16.1 AT Down 47.1 212.5 Up 02:32:11 - 03:01:25 1595
Ellensburg 02:46:44 -16.0 AT Down 47.5 212.4 Up 02:32:07 - 03:01:21 1572
Yakima 02:46:43 -15.9 AT Down 47.9 212.6 Up 02:32:06 - 03:01:20 1540
Toppenish/White Swan 02:46:42 -16.0 AT Down 48.0 213.0 Up 02:32:05 - 03:01:19 1514
The Dalles 02:46:36 -15.4 AT Down 48.9 212.3 Up 02:31:59 - 03:01:13 1490
Maupin 02:46:35 -15.4 AT Down 49.2 212.8 Up 02:31:58 - 03:01:12 1450
PNWRO 02:46:49 -17.0 AT Down 47.7 215.3 Up 02:32:12 - 03:01:26 1411
Sisters 02:46:29 -14.9 AT Down 50.2 212.6 Up 02:31:52 - 03:01:06 1404
Sleaford 02:48:02 -25.5 Dark Down 37.4 227.7 Up 02:33:25 - 03:02:39 1402
Bend 02:46:30 -15.1 AT Down 50.3 213.1 Up 02:31:53 - 03:01:07 1371
Oregon Observatory 02:46:28 -15.0 AT Down 50.5 213.0 Up 02:31:51 - 03:01:05 1363
Chiloquin 02:46:20 -14.5 AT Down 51.8 213.3 Up 02:31:43 - 03:00:57 1277
Klamath Falls 02:46:19 -14.5 AT Down 52.0 213.6 Up 02:31:42 - 03:00:56 1245
Fall River/Burney 02:46:16 -14.6 AT Down 52.8 215.0 Up 02:31:39 - 03:00:53 1127
Cedarville 02:46:24 -15.6 AT Down 51.9 216.5 Up 02:31:47 - 03:01:01 1102
Greenville 02:46:14 -14.9 AT Down 53.4 216.4 Up 02:31:37 - 03:00:51 1028
Gimple 02:46:14 -14.9 AT Down 53.3 216.5 Up 02:31:37 - 03:00:51 1023
Quincy 02:46:13 -14.8 AT Down 53.5 216.5 Up 02:31:36 - 03:00:50 1010
Portola 02:46:15 -15.2 AT Down 53.4 217.4 Up 02:31:38 - 03:00:52 974
Reno 02:46:18 -15.7 AT Down 53.3 218.5 Up 02:31:41 - 03:00:55 916
Carson City 02:46:16 -15.6 AT Down 53.6 218.9 Up 02:31:39 - 03:00:53 885
Gardnerville 02:46:15 -15.6 AT Down 53.8 219.1 Up 02:31:38 - 03:00:52 861
Yerington 02:46:18 -16.1 AT Down 53.4 220.0 Up 02:31:41 - 03:00:55 834
Hawthorne 02:46:19 -16.5 AT Down 53.5 221.1 Up 02:31:42 - 03:00:56 765
Lee Vining 02:46:14 -16.0 AT Down 54.2 220.9 Up 02:31:37 - 03:00:51 744
Bishop 02:46:15 -16.5 AT Down 54.3 222.5 Up 02:31:38 - 03:00:52 652
Beatty 02:46:22 -17.8 AT Down 53.7 225.3 Up 02:31:45 - 03:00:59 523
Wildwood 02:45:58 -15.9 AT Down 56.8 225.4 Up 02:31:21 - 03:00:35 382
Dunrhomin 02:47:35 -27.2 Dark Down 44.3 236.5 Up 02:32:58 - 03:02:12 261
Laughlin/Bullhead City 02:46:26 -19.4 Dark Down 53.5 229.9 Up 02:31:49 - 03:01:03 251
Nikitin 02:47:35 -27.1 Dark Down 44.5 236.6 Up 02:32:58 - 03:02:12 244
Idyllwild 02:46:07 -17.4 AT Down 55.8 228.5 Up 02:31:30 - 03:00:44 243
CU-SBO 02:47:34 -27.1 Dark Down 44.5 236.6 Up 02:32:57 - 03:02:11 242
Patrick 02:46:31 -20.0 Dark Down 52.9 230.6 Up 02:31:54 - 03:01:08 235
Lake Havasu City 02:46:24 -19.6 Dark Down 53.8 231.0 Up 02:31:47 - 03:01:01 177
Calipatria 02:46:11 -18.4 Dark Down 55.5 230.8 Up 02:31:34 - 03:00:48 122
Yuma 02:46:14 -19.1 Dark Down 55.1 232.5 Up 02:31:37 - 03:00:51 34
George/Scottsdale 02:46:35 -21.6 Dark Down 52.6 234.9 Up 02:31:58 - 03:01:12 -25

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 13XU33, (2024/02/09 02:48UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 30.88 121
Menkar         03:02:16.8 +04:05:21  2.5  8.50  95
PPM 145746     02:36:35.0 +07:43:47  6.3  1.21  91
PPM 145710     02:34:13.2 +08:59:19  7.8  0.40  91
PPM 145696     02:33:15.5 +08:22:39  9.3  0.27  90
PPM 145699     02:33:19.8 +08:39:18 10.4  0.01  90
13XU33         02:33:22.4 +08:38:48 13.5        90
Positions are for J2000

Event circumstances last updated at 2022/12/24 04:01:40 UT

Marc W. Buie, Southwest Research Institute

RECON