RECON: TNO occultation with 523734

Event between (523734) 14QV441 and star GA0860:00662126 with event index number of 2373203

Geocentric closest approach at 2028/10/02 10:38:49 UTC

J2000 position of star is 05:31:54.3 -03:16:54
Equinox of date position of star is 05:33:00.7 -03:16:01
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 88 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 20.5 AU from the Sun and 20.2 AU from the Earth.
The TNO is moving 12.0 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 138 seconds.
The 1-sigma cross-track error in the shadow position is 5392 km.
The sky-plane scale is 14658.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=106.7 km assuming a 5% albedo -- 8.9 sec chord
Diameter=43.5 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523734, (2028/10/02 10:39UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:55.3 -08:10:14  0.1  6.55  84
34Del Ori      05:33:28.6 -00:16:49  2.2  2.98  88
PPM 188111     05:30:49.8 -03:25:32  5.6  0.65  88
PPM 188147     05:33:10.0 -03:11:50  6.8  0.08  88
523734         05:33:20.6 -03:15:45 15.6        89
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 6.5 km RECON observability=1.0 and success probability=7.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Quincy 10:33:19 -38.9 Dark Up 36.8 135.9 Up 10:21:21 - 10:45:18 650
Fall River/Burney 10:33:12 -38.6 Dark Up 35.7 136.0 Up 10:21:13 - 10:45:10 648
Greenville 10:33:18 -38.8 Dark Up 36.6 136.0 Up 10:21:19 - 10:45:16 645
Gimple 10:33:19 -38.8 Dark Up 36.7 136.1 Up 10:21:20 - 10:45:17 639
Klamath Falls 10:33:05 -38.2 Dark Up 34.6 136.1 Up 10:21:06 - 10:45:03 637
Chiloquin 10:33:02 -38.0 Dark Up 34.3 136.2 Up 10:21:03 - 10:45:00 631
Wildwood 10:34:01 -40.2 Dark Up 42.3 135.3 Up 10:22:02 - 10:45:59 621
Portola 10:33:20 -38.7 Dark Up 37.1 136.4 Up 10:21:21 - 10:45:18 621
Susanville 10:33:16 -38.5 Dark Up 36.6 136.5 Up 10:21:17 - 10:45:14 616
Gardnerville 10:33:25 -38.7 Dark Up 38.1 136.7 Up 10:21:26 - 10:45:23 594
Carson City 10:33:24 -38.6 Dark Up 37.9 136.8 Up 10:21:25 - 10:45:22 590
Reno 10:33:20 -38.4 Dark Up 37.6 136.9 Up 10:21:22 - 10:45:19 582
Lee Vining 10:33:32 -38.8 Dark Up 39.2 136.9 Up 10:21:34 - 10:45:31 574
Oregon Observatory 10:32:53 -37.0 Dark Up 33.6 137.2 Up 10:20:54 - 10:44:51 560
Sisters 10:32:50 -36.8 Dark Up 33.2 137.2 Up 10:20:52 - 10:44:49 555
Cedarville 10:33:08 -37.6 Dark Up 36.0 137.5 Up 10:21:09 - 10:45:06 550
Yerington 10:33:24 -38.3 Dark Up 38.4 137.4 Up 10:21:25 - 10:45:22 550
Bend 10:32:51 -36.8 Dark Up 33.5 137.4 Up 10:20:52 - 10:44:49 546
North Lake 10:32:56 -37.1 Dark Up 34.3 137.5 Up 10:20:57 - 10:44:54 546
Lakeview 10:33:03 -37.3 Dark Up 35.4 137.6 Up 10:21:04 - 10:45:01 542
Bishop 10:33:36 -38.6 Dark Up 40.0 137.4 Up 10:21:38 - 10:45:35 534
Hawthorne 10:33:27 -38.2 Dark Up 39.0 137.7 Up 10:21:29 - 10:45:26 523
Victoria 10:32:23 -35.1 Dark Up 29.2 137.0 Low 10:20:25 - 10:44:22 509
Maupin 10:32:43 -36.0 Dark Up 32.8 138.1 Up 10:20:45 - 10:44:42 492
The Dalles 10:32:41 -35.8 Dark Up 32.4 138.2 Up 10:20:42 - 10:44:39 484
Idyllwild 10:34:01 -39.0 Dark Up 43.7 137.1 Up 10:22:03 - 10:46:00 481
Goldendale 10:32:39 -35.5 Dark Up 32.4 138.6 Up 10:20:41 - 10:44:38 453
Tonopah 10:33:30 -37.4 Dark Up 40.1 139.0 Up 10:21:31 - 10:45:28 430
Beatty 10:33:38 -37.7 Dark Up 41.3 138.9 Up 10:21:39 - 10:45:36 421
Yakima 10:32:34 -34.9 Dark Up 31.9 139.2 Up 10:20:35 - 10:44:32 410
Toppenish/White Swan 10:32:35 -34.9 Dark Up 32.2 139.3 Up 10:20:37 - 10:44:34 407
Calipatria 10:34:04 -38.4 Dark Up 44.8 138.1 Up 10:22:06 - 10:46:03 396
Ellensburg 10:32:31 -34.6 Dark Up 31.6 139.4 Up 10:20:33 - 10:44:30 395
Wenatchee 10:32:28 -34.3 Dark Up 31.4 139.8 Up 10:20:30 - 10:44:27 366
Indian Springs 10:33:38 -37.0 Dark Up 42.1 140.0 Up 10:21:40 - 10:45:37 345
Manson/Chelan 10:32:25 -33.9 Dark Up 31.1 140.1 Up 10:20:27 - 10:44:24 338
Yuma 10:34:07 -37.8 Dark Up 45.6 138.9 Up 10:22:08 - 10:46:05 330
PNWRO 10:32:36 -34.3 Dark Up 33.1 140.8 Up 10:20:38 - 10:44:35 324
Brewster 10:32:24 -33.6 Dark Up 31.1 140.6 Up 10:20:26 - 10:44:23 308
Henderson 10:33:42 -36.8 Dark Up 42.8 140.5 Up 10:21:44 - 10:45:41 301
Mohave Valley 10:33:50 -36.9 Dark Up 44.0 140.3 Up 10:21:52 - 10:45:49 289
Okanogan 10:32:22 -33.3 Dark Up 31.0 140.9 Up 10:20:23 - 10:44:20 286
Laughlin/Bullhead City 10:33:48 -36.8 Dark Up 43.7 140.5 Up 10:21:49 - 10:45:46 285
Parker 10:33:56 -37.0 Dark Up 44.7 140.2 Up 10:21:57 - 10:45:54 279
Lake Havasu City 10:33:52 -36.9 Dark Up 44.4 140.4 Up 10:21:54 - 10:45:51 276
Tonasket 10:32:19 -33.0 Dark Up 30.8 141.2 Up 10:20:21 - 10:44:18 265
Oliver 10:32:17 -32.8 Dark Up 30.3 141.2 Up 10:20:18 - 10:44:15 255
Anarchist Mountain Observatory 10:32:18 -32.8 Dark Up 30.6 141.3 Up 10:20:19 - 10:44:16 250
Peachland 10:32:13 -32.6 Dark Up 29.8 141.2 Low 10:20:15 - 10:44:12 246
Summerland 10:32:14 -32.6 Dark Up 30.0 141.2 Low 10:20:16 - 10:44:13 246
Kamloops 10:32:08 -32.3 Dark Up 28.8 140.8 Low 10:20:10 - 10:44:07 246
Kingman/Dolan Springs 10:33:47 -36.4 Dark Up 44.0 141.1 Up 10:21:49 - 10:45:46 243
Penticton 10:32:15 -32.6 Dark Up 30.1 141.3 Up 10:20:16 - 10:44:13 242
Patrick 10:33:46 -36.2 Dark Up 43.9 141.4 Up 10:21:47 - 10:45:44 224
Kelowna 10:32:13 -32.3 Dark Up 29.8 141.5 Low 10:20:14 - 10:44:11 224
George/Scottsdale 10:33:56 -35.3 Dark Up 46.3 142.9 Up 10:21:57 - 10:45:54 86
CU-SBO 10:33:04 -28.3 Dark Up 43.6 154.4 Up 10:21:05 - 10:45:02 -531
Dunrhomin 10:33:02 -28.1 Dark Up 43.4 154.6 Up 10:21:03 - 10:45:00 -542
Sleaford 10:31:49 -24.0 Dark Up 32.3 157.1 Up 10:19:50 - 10:43:47 -681

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 523734, (2028/10/02 10:39UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  6.55  84
34Del Ori      05:32:00.4 -00:17:57  2.2  2.98  88
PPM 188111     05:29:23.7 -03:26:47  5.6  0.65  88
PPM 188147     05:31:43.7 -03:13:00  6.8  0.08  88
523734         05:31:54.3 -03:16:54 15.6        88
Positions are for J2000

Event circumstances last updated at 2022/02/19 01:09:18 UT

Marc W. Buie, Southwest Research Institute

RECON