RECON: TNO occultation with 10LB136

Event between 10LB136 and star GA0720:33111818 with event index number of 2101491

Geocentric closest approach at 2024/08/02 07:29:02 UTC

J2000 position of star is 20:38:00.6 -17:09:50
Equinox of date position of star is 20:39:21.6 -17:04:45
Stellar brightness G=14.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 157 degrees from the moon. Moon is 5% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 29.2 AU from the Sun and 28.2 AU from the Earth.
Apparent velocity is 23.4 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 49 seconds.
The 1-sigma cross-track error in the shadow position is 1053 km.
The sky-plane scale is 20461.5 km/arcsec.

The object has an absolute magnitude Hv=6.0
Diameter=368.1 km assuming a 5% albedo -- 16.4 sec chord
Diameter=150.3 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 10LB136, (2024/08/02 07:28UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:00.2 -29:29:29  1.2 34.21 130
38Zet Sgr      19:04:10.4 -29:50:34  2.7 25.21 177
PPM 237641     20:36:55.5 -16:26:23  6.4  0.87 157
PPM 237698     20:39:12.3 -17:02:07  7.4  0.06 157
10LB136        20:39:24.0 -17:04:36 14.5       157
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 0.0 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:28:03 -21.2 Dark Down 21.9 173.3 Low 07:23:26 - 07:32:40 10430
Victoria 07:28:14 -22.9 Dark Down 23.8 170.1 Low 07:23:37 - 07:32:51 10407
Peachland 07:28:02 -22.1 Dark Down 22.9 173.9 Low 07:23:25 - 07:32:39 10383
Kelowna 07:28:01 -22.1 Dark Down 22.8 174.2 Low 07:23:24 - 07:32:38 10381
Summerland 07:28:02 -22.3 Dark Down 23.0 174.0 Low 07:23:25 - 07:32:39 10375
Penticton 07:28:02 -22.4 Dark Down 23.1 174.1 Low 07:23:25 - 07:32:39 10370
Oliver 07:28:02 -22.7 Dark Down 23.5 174.1 Low 07:23:25 - 07:32:39 10356
Anarchist Mountain Observatory 07:28:01 -22.9 Dark Down 23.6 174.3 Low 07:23:24 - 07:32:38 10346
Okanogan 07:28:03 -23.5 Dark Down 24.3 174.0 Low 07:23:26 - 07:32:40 10323
Brewster 07:28:04 -23.8 Dark Down 24.5 173.8 Low 07:23:27 - 07:32:41 10316
Manson/Chelan 07:28:05 -23.9 Dark Down 24.7 173.4 Low 07:23:28 - 07:32:42 10315
Wenatchee 07:28:08 -24.4 Dark Down 25.2 173.2 Low 07:23:31 - 07:32:45 10299
Ellensburg 07:28:07 -24.8 Dark Down 25.6 173.0 Low 07:23:30 - 07:32:44 10286
Yakima 07:28:08 -25.2 Dark Down 26.0 172.9 Low 07:23:31 - 07:32:45 10269
Toppenish/White Swan 07:28:07 -25.4 Dark Down 26.2 173.1 Low 07:23:30 - 07:32:44 10255
The Dalles 07:28:11 -26.1 Dark Down 26.9 172.2 Low 07:23:34 - 07:32:48 10237
Maupin 07:28:11 -26.5 Dark Down 27.3 172.3 Low 07:23:34 - 07:32:48 10216
PNWRO 07:28:03 -25.9 Dark Down 26.7 174.7 Low 07:23:26 - 07:32:40 10206
Sisters 07:28:13 -27.3 Dark Down 28.1 171.7 Low 07:23:36 - 07:32:50 10186
Bend 07:28:13 -27.5 Dark Down 28.4 172.0 Low 07:23:36 - 07:32:50 10169
Sleaford 07:27:23 -20.2 Dark Down 20.4 188.0 Low 07:22:46 - 07:32:00 10168
Oregon Observatory 07:28:13 -27.7 Dark Down 28.6 171.8 Low 07:23:36 - 07:32:50 10164
Chiloquin 07:28:17 -28.9 Dark Down 29.8 171.3 Low 07:23:40 - 07:32:54 10108
Klamath Falls 07:28:16 -29.3 Dark Down 30.2 171.3 Up 07:23:39 - 07:32:53 10089
Fall River/Burney 07:28:16 -30.5 Dark Down 31.4 171.7 Up 07:23:39 - 07:32:53 10019
Cedarville 07:28:12 -30.2 Dark Down 31.0 173.0 Up 07:23:35 - 07:32:49 10017
Greenville 07:28:17 -31.4 Dark Down 32.3 172.1 Up 07:23:40 - 07:32:54 9961
Gimple 07:28:15 -31.5 Dark Down 32.3 172.2 Up 07:23:38 - 07:32:52 9958
Quincy 07:28:16 -31.6 Dark Down 32.5 172.1 Up 07:23:39 - 07:32:53 9949
Portola 07:28:17 -31.8 Dark Down 32.7 172.6 Up 07:23:40 - 07:32:54 9932
Reno 07:28:14 -32.2 Dark Down 33.0 173.3 Up 07:23:37 - 07:32:51 9901
Carson City 07:28:14 -32.5 Dark Down 33.4 173.3 Up 07:23:37 - 07:32:51 9880
Gardnerville 07:28:14 -32.8 Dark Down 33.6 173.3 Up 07:23:37 - 07:32:51 9865
Yerington 07:28:12 -32.8 Dark Down 33.6 174.0 Up 07:23:35 - 07:32:49 9854
Hawthorne 07:28:10 -33.3 Dark Down 34.1 174.6 Up 07:23:33 - 07:32:47 9814
Lee Vining 07:28:12 -33.8 Dark Down 34.7 174.0 Up 07:23:35 - 07:32:49 9794
Bishop 07:28:10 -34.5 Dark Down 35.3 174.8 Up 07:23:33 - 07:32:47 9740
Beatty 07:28:06 -35.2 Dark Down 35.9 176.6 Up 07:23:29 - 07:32:43 9669
Dunrhomin 07:27:23 -31.9 Dark Down 32.0 189.7 Up 07:22:46 - 07:32:00 9545
Wildwood 07:28:15 -37.7 Dark Down 38.6 174.3 Up 07:23:38 - 07:32:52 9542
Nikitin 07:27:23 -32.1 Dark Down 32.2 189.7 Up 07:22:46 - 07:32:00 9534
CU-SBO 07:27:24 -32.2 Dark Down 32.3 189.6 Up 07:22:47 - 07:32:01 9533
Laughlin/Bullhead City 07:28:00 -37.1 Dark Down 37.7 179.2 Up 07:23:23 - 07:32:37 9500
Patrick 07:27:56 -36.9 Dark Down 37.4 180.0 Up 07:23:19 - 07:32:33 9497
Idyllwild 07:28:08 -38.3 Dark Down 39.0 176.6 Up 07:23:31 - 07:32:45 9468
Lake Havasu City 07:28:00 -37.8 Dark Down 38.3 179.5 Up 07:23:23 - 07:32:37 9450
Calipatria 07:28:05 -39.0 Dark Down 39.7 178.0 Up 07:23:28 - 07:32:42 9393
Yuma 07:28:02 -39.5 Dark Down 40.1 179.1 Up 07:23:25 - 07:32:39 9339
George/Scottsdale 07:27:51 -38.7 Dark Down 39.1 182.5 Up 07:23:14 - 07:32:28 9327

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 10LB136, (2024/08/02 07:28UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 34.21 130
38Zet Sgr      19:02:36.7 -29:52:49  2.7 25.21 177
PPM 237641     20:35:32.4 -16:31:34  6.4  0.87 157
PPM 237698     20:37:49.0 -17:07:21  7.4  0.06 157
10LB136        20:38:00.6 -17:09:50 14.5       157
Positions are for J2000

Event circumstances last updated at 2023/11/18 04:49:23 UT

Marc W. Buie, Southwest Research Institute

RECON