RECON: TNO occultation with 15788

Event between (15788) 93SB and star GA1140:01025460 with event index number of 1387746

Geocentric closest approach at 2025/03/24 05:26:29 UTC

J2000 position of star is 05:10:39.9 +24:52:38
Equinox of date position of star is 05:12:04.5 +24:54:15
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 144 degrees from the moon. Moon is 33% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 26.8 AU from the Sun and 27.0 AU from the Earth.
Apparent velocity is 13.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 337 seconds.
The 1-sigma cross-track error in the shadow position is 1115 km.
The sky-plane scale is 19606.3 km/arcsec.

The object has an absolute magnitude Hv=7.9
Diameter=154.9 km assuming a 5% albedo -- 11.3 sec chord
Diameter=63.2 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15788, (2025/03/24 05:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:22.3 +16:33:29  0.8 11.66 134
Alnath         05:27:53.3 +28:37:35  1.6  5.11 148
103 Tau        05:09:39.0 +24:17:46  5.3  0.84 144
PPM 094178     05:14:36.0 +24:25:30  8.4  0.73 145
PPM 094145     05:12:22.7 +24:53:57 10.0  0.04 144
15788          05:12:12.7 +24:54:24 16.0       145
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 18.9 km RECON observability=1.0 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:31:12 -32.5 Dark Down 24.7 279.4 Low 05:16:12 - 05:46:12 6242
Kamloops 05:30:59 -28.1 Dark Down 33.6 269.2 Up 05:15:59 - 05:45:59 5734
Kelowna 05:31:06 -29.1 Dark Down 33.0 270.5 Up 05:16:06 - 05:46:06 5695
Peachland 05:31:06 -29.0 Dark Down 33.2 270.3 Up 05:16:06 - 05:46:06 5678
Summerland 05:31:07 -29.2 Dark Down 33.1 270.5 Up 05:16:07 - 05:46:07 5668
Penticton 05:31:07 -29.3 Dark Down 33.0 270.6 Up 05:16:07 - 05:46:07 5666
Oliver 05:31:09 -29.5 Dark Down 33.0 270.8 Up 05:16:09 - 05:46:09 5638
Anarchist Mountain Observatory 05:31:11 -29.7 Dark Down 32.9 271.1 Up 05:16:11 - 05:46:11 5630
Okanogan 05:31:14 -30.1 Dark Down 33.0 271.4 Up 05:16:14 - 05:46:14 5571
Brewster 05:31:15 -30.2 Dark Down 33.2 271.4 Up 05:16:15 - 05:46:15 5544
Manson/Chelan 05:31:15 -30.1 Dark Down 33.4 271.3 Up 05:16:15 - 05:46:15 5516
Victoria 05:31:04 -28.1 Dark Down 35.6 268.4 Up 05:16:04 - 05:46:04 5476
Wenatchee 05:31:18 -30.4 Dark Down 33.5 271.5 Up 05:16:18 - 05:46:18 5472
Ellensburg 05:31:19 -30.6 Dark Down 33.6 271.6 Up 05:16:19 - 05:46:19 5432
PNWRO 05:31:28 -32.1 Dark Down 32.4 273.4 Up 05:16:28 - 05:46:28 5398
Yakima 05:31:22 -30.8 Dark Down 33.6 271.9 Up 05:16:22 - 05:46:22 5397
Toppenish/White Swan 05:31:24 -31.1 Dark Down 33.5 272.1 Up 05:16:24 - 05:46:24 5384
Dunrhomin 05:32:20 -43.0 Dark Down 21.5 285.0 Low 05:17:20 - 05:47:20 5378
Nikitin 05:32:20 -43.1 Dark Down 21.4 285.1 Low 05:17:20 - 05:47:20 5363
CU-SBO 05:32:21 -43.1 Dark Down 21.5 285.1 Low 05:17:21 - 05:47:21 5355
The Dalles 05:31:25 -31.2 Dark Down 34.0 272.1 Up 05:16:25 - 05:46:25 5295
Maupin 05:31:28 -31.5 Dark Down 33.9 272.5 Up 05:16:28 - 05:46:28 5263
Sisters 05:31:31 -31.8 Dark Down 34.2 272.7 Up 05:16:31 - 05:46:31 5173
Bend 05:31:33 -32.1 Dark Down 34.0 273.1 Up 05:16:33 - 05:46:33 5160
Oregon Observatory 05:31:34 -32.2 Dark Down 34.1 273.1 Up 05:16:34 - 05:46:34 5141
Chiloquin 05:31:39 -32.8 Dark Down 34.3 273.7 Up 05:16:39 - 05:46:39 5014
Klamath Falls 05:31:41 -33.1 Dark Down 34.2 274.0 Up 05:16:41 - 05:46:41 4986
Cedarville 05:31:48 -34.5 Dark Down 32.9 275.5 Up 05:16:48 - 05:46:48 4976
Fall River/Burney 05:31:48 -34.1 Dark Down 33.8 275.1 Up 05:16:48 - 05:46:48 4894
Gimple 05:31:54 -35.0 Dark Down 33.3 276.0 Up 05:16:54 - 05:46:54 4830
Greenville 05:31:53 -34.9 Dark Down 33.4 275.9 Up 05:16:53 - 05:46:53 4827
Portola 05:31:56 -35.4 Dark Down 32.9 276.5 Up 05:16:56 - 05:46:56 4814
Reno 05:31:59 -36.0 Dark Down 32.4 277.0 Up 05:16:59 - 05:46:59 4812
Quincy 05:31:54 -35.0 Dark Down 33.3 276.1 Up 05:16:54 - 05:46:54 4809
Yerington 05:32:02 -36.7 Dark Down 31.8 277.7 Up 05:17:02 - 05:47:02 4784
Carson City 05:32:01 -36.2 Dark Down 32.3 277.2 Up 05:17:01 - 05:47:01 4780
Hawthorne 05:32:06 -37.4 Dark Down 31.3 278.3 Up 05:17:06 - 05:47:06 4760
Gardnerville 05:32:02 -36.4 Dark Down 32.3 277.4 Up 05:17:02 - 05:47:02 4760
Lee Vining 05:32:08 -37.4 Dark Down 31.6 278.4 Up 05:17:08 - 05:47:08 4693
Beatty 05:32:18 -39.6 Dark Down 29.6 280.3 Low 05:17:18 - 05:47:18 4679
Bishop 05:32:13 -38.3 Dark Down 31.0 279.2 Up 05:17:13 - 05:47:13 4663
Patrick 05:32:30 -42.3 Dark Down 26.9 282.6 Low 05:17:30 - 05:47:30 4649
Laughlin/Bullhead City 05:32:31 -42.1 Dark Down 27.5 282.3 Low 05:17:31 - 05:47:31 4600
George/Scottsdale 05:32:42 -44.7 Dark Down 24.9 284.3 Low 05:17:42 - 05:47:42 4570
Lake Havasu City 05:32:34 -42.7 Dark Down 27.1 282.8 Low 05:17:34 - 05:47:34 4549
Idyllwild 05:32:32 -41.7 Dark Down 28.9 282.1 Low 05:17:32 - 05:47:32 4391
Calipatria 05:32:37 -42.9 Dark Down 27.8 283.0 Low 05:17:37 - 05:47:37 4378
Yuma 05:32:42 -43.7 Dark Down 26.9 283.6 Low 05:17:42 - 05:47:42 4372
Wildwood 05:32:26 -40.2 Dark Down 30.5 281.0 Up 05:17:26 - 05:47:26 4356

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 15788, (2025/03/24 05:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 11.66 134
Alnath         05:26:17.6 +28:36:23  1.6  5.11 148
103 Tau        05:08:06.6 +24:15:54  5.3  0.84 144
PPM 094178     05:13:03.4 +24:23:49  8.4  0.73 145
PPM 094145     05:10:49.8 +24:52:11 10.0  0.04 144
15788          05:10:39.9 +24:52:38 16.0       144
Positions are for J2000

Event circumstances last updated at 2022/12/24 04:12:36 UT

Marc W. Buie, Southwest Research Institute

RECON