RECON: TNO occultation with 523738

Event between (523738) 14SH349 and star GA0980:00347451 with event index number of 2324741

Geocentric closest approach at 2024/01/07 06:10:48 UTC

J2000 position of star is 03:52:46.1 +09:22:11
Equinox of date position of star is 03:54:04.3 +09:26:23
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 21% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 45.8 AU from the Sun and 45.1 AU from the Earth.
Apparent velocity is 16.5 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 128 seconds.
The 1-sigma cross-track error in the shadow position is 1668 km.
The sky-plane scale is 32729.1 km/arcsec.

The object has an absolute magnitude Hv=5.4
Diameter=494.3 km assuming a 5% albedo -- 30.9 sec chord
Diameter=201.8 km assuming a 30% albedo -- 12.6 sec chord
Dynamical classification is SCATEXTD

Star training set for 523738, (2024/01/07 06:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.1 +16:33:21  0.8 12.70 160
Menkar         03:03:32.3 +04:10:57  2.5 13.60 163
PPM 119523     04:00:59.6 +10:23:50  6.5  1.95 165
PPM 147033     03:56:03.9 +09:14:48  7.7  0.53 165
PPM 147022     03:55:32.5 +09:19:03  9.2  0.38 165
PPM 146990     03:53:52.2 +09:06:46 10.8  0.33 165
523738         03:54:04.4 +09:26:24 16.6       165
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 31.7 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)

Sleaford 06:08:30 -58.1 Dark Down 39.0 225.7 Up 05:57:22 - 06:19:37 -3636

Kamloops 06:09:20 -53.6 Dark Down 45.5 208.9 Up 05:58:12 - 06:20:27 -3805

Kelowna 06:09:15 -54.6 Dark Down 45.9 210.5 Up 05:58:07 - 06:20:22 -3871

Peachland 06:09:16 -54.5 Dark Down 46.1 210.2 Up 05:58:08 - 06:20:23 -3881

Summerland 06:09:15 -54.6 Dark Down 46.2 210.4 Up 05:58:07 - 06:20:22 -3894

Penticton 06:09:14 -54.7 Dark Down 46.2 210.6 Up 05:58:06 - 06:20:21 -3899

Oliver 06:09:14 -54.9 Dark Down 46.5 210.7 Up 05:58:06 - 06:20:21 -3929

Anarchist Mountain Observatory 06:09:12 -55.1 Dark Down 46.6 211.1 Up 05:58:05 - 06:20:20 -3943

Victoria 06:09:30 -53.3 Dark Down 48.3 205.8 Up 05:58:22 - 06:20:37 -3995

Okanogan 06:09:12 -55.4 Dark Down 47.2 211.1 Up 05:58:05 - 06:20:20 -3999

Brewster 06:09:14 -55.5 Dark Down 47.5 211.0 Up 05:58:06 - 06:20:21 -4023

Manson/Chelan 06:09:15 -55.4 Dark Down 47.9 210.6 Up 05:58:07 - 06:20:22 -4042

Wenatchee 06:09:14 -55.6 Dark Down 48.3 210.7 Up 05:58:06 - 06:20:21 -4084

Ellensburg 06:09:14 -55.7 Dark Down 48.8 210.6 Up 05:58:07 - 06:20:22 -4121

Yakima 06:09:15 -56.0 Dark Down 49.1 210.8 Up 05:58:07 - 06:20:22 -4157

Toppenish/White Swan 06:09:14 -56.2 Dark Down 49.2 211.2 Up 05:58:06 - 06:20:21 -4176

PNWRO 06:09:06 -57.2 Dark Down 49.0 213.5 Up 05:57:58 - 06:20:13 -4204

The Dalles 06:09:16 -56.2 Dark Down 50.2 210.5 Up 05:58:08 - 06:20:23 -4247

Maupin 06:09:15 -56.5 Dark Down 50.5 210.9 Up 05:58:07 - 06:20:22 -4284

Sisters 06:09:16 -56.6 Dark Down 51.4 210.8 Up 05:58:08 - 06:20:23 -4365

Bend 06:09:13 -56.9 Dark Down 51.6 211.3 Up 05:58:05 - 06:20:20 -4386

Oregon Observatory 06:09:14 -56.9 Dark Down 51.7 211.2 Up 05:58:06 - 06:20:21 -4402

Chiloquin 06:09:15 -57.3 Dark Down 53.0 211.5 Up 05:58:07 - 06:20:22 -4525

Klamath Falls 06:09:14 -57.5 Dark Down 53.3 211.9 Up 05:58:06 - 06:20:21 -4556

Cedarville 06:09:05 -58.9 Dark Down 53.2 214.7 Up 05:57:58 - 06:20:13 -4617

Fall River/Burney 06:09:10 -58.3 Dark Down 54.1 213.3 Up 05:58:03 - 06:20:18 -4666

Dunrhomin 06:07:56 -68.3 Dark Down 46.3 234.8 Up 05:56:49 - 06:19:04 -4669

Nikitin 06:07:56 -68.4 Dark Down 46.4 235.0 Up 05:56:48 - 06:19:03 -4686

CU-SBO 06:07:56 -68.4 Dark Down 46.5 234.9 Up 05:56:49 - 06:19:04 -4693

Gimple 06:09:06 -59.0 Dark Down 54.7 214.8 Up 05:57:59 - 06:20:14 -4751

Greenville 06:09:07 -59.0 Dark Down 54.7 214.7 Up 05:58:00 - 06:20:15 -4751

Quincy 06:09:07 -59.1 Dark Down 54.9 214.8 Up 05:57:59 - 06:20:14 -4770

Portola 06:09:04 -59.4 Dark Down 54.8 215.6 Up 05:57:56 - 06:20:11 -4781

Reno 06:09:01 -60.0 Dark Down 54.7 216.8 Up 05:57:53 - 06:20:08 -4804

Carson City 06:09:01 -60.2 Dark Down 55.0 217.2 Up 05:57:53 - 06:20:08 -4839

Yerington 06:08:57 -60.7 Dark Down 54.8 218.3 Up 05:57:49 - 06:20:04 -4856

Gardnerville 06:08:59 -60.3 Dark Down 55.1 217.4 Up 05:57:51 - 06:20:06 -4862

Hawthorne 06:08:54 -61.3 Dark Down 54.9 219.5 Up 05:57:47 - 06:20:02 -4899

Lee Vining 06:08:55 -61.2 Dark Down 55.6 219.3 Up 05:57:48 - 06:20:03 -4955

Bishop 06:08:52 -61.9 Dark Down 55.7 220.9 Up 05:57:44 - 06:19:59 -5011

Beatty 06:08:43 -63.3 Dark Down 55.2 223.7 Up 05:57:35 - 06:19:50 -5051

Patrick 06:08:26 -66.0 Dark Down 54.6 229.1 Up 05:57:18 - 06:19:33 -5185

Laughlin/Bullhead City 06:08:29 -65.6 Dark Down 55.2 228.4 Up 05:57:21 - 06:19:36 -5213

Lake Havasu City 06:08:27 -66.0 Dark Down 55.4 229.5 Up 05:57:19 - 06:19:34 -5279

Wildwood 06:08:48 -62.9 Dark Down 58.2 223.9 Up 05:57:41 - 06:19:56 -5337

George/Scottsdale 06:08:14 -68.2 Dark Down 54.4 233.5 Up 05:57:06 - 06:19:21 -5345

Idyllwild 06:08:37 -64.5 Dark Down 57.4 227.1 Up 05:57:29 - 06:19:44 -5365

Calipatria 06:08:31 -65.6 Dark Down 57.1 229.4 Up 05:57:23 - 06:19:38 -5423

Yuma 06:08:26 -66.5 Dark Down 56.8 231.1 Up 05:57:19 - 06:19:34 -5463

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 523738, (2024/01/07 06:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 12.70 160
Menkar         03:02:16.8 +04:05:21  2.5 13.60 163
PPM 119523     03:59:40.7 +10:19:50  6.5  1.95 165
PPM 147033     03:54:45.6 +09:10:39  7.7  0.53 165
PPM 147022     03:54:14.2 +09:14:53  9.2  0.38 165
PPM 146990     03:52:34.0 +09:02:33 10.8  0.33 165
523738         03:52:46.1 +09:22:11 16.6       165
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:45:06 UT

Marc W. Buie, Southwest Research Institute

RECON

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	06:08:30	-58.1	Dark	Down	39.0	225.7	Up	05:57:22 - 06:19:37	-3636
Kamloops	06:09:20	-53.6	Dark	Down	45.5	208.9	Up	05:58:12 - 06:20:27	-3805
Kelowna	06:09:15	-54.6	Dark	Down	45.9	210.5	Up	05:58:07 - 06:20:22	-3871
Peachland	06:09:16	-54.5	Dark	Down	46.1	210.2	Up	05:58:08 - 06:20:23	-3881
Summerland	06:09:15	-54.6	Dark	Down	46.2	210.4	Up	05:58:07 - 06:20:22	-3894
Penticton	06:09:14	-54.7	Dark	Down	46.2	210.6	Up	05:58:06 - 06:20:21	-3899
Oliver	06:09:14	-54.9	Dark	Down	46.5	210.7	Up	05:58:06 - 06:20:21	-3929
Anarchist Mountain Observatory	06:09:12	-55.1	Dark	Down	46.6	211.1	Up	05:58:05 - 06:20:20	-3943
Victoria	06:09:30	-53.3	Dark	Down	48.3	205.8	Up	05:58:22 - 06:20:37	-3995
Okanogan	06:09:12	-55.4	Dark	Down	47.2	211.1	Up	05:58:05 - 06:20:20	-3999
Brewster	06:09:14	-55.5	Dark	Down	47.5	211.0	Up	05:58:06 - 06:20:21	-4023
Manson/Chelan	06:09:15	-55.4	Dark	Down	47.9	210.6	Up	05:58:07 - 06:20:22	-4042
Wenatchee	06:09:14	-55.6	Dark	Down	48.3	210.7	Up	05:58:06 - 06:20:21	-4084
Ellensburg	06:09:14	-55.7	Dark	Down	48.8	210.6	Up	05:58:07 - 06:20:22	-4121
Yakima	06:09:15	-56.0	Dark	Down	49.1	210.8	Up	05:58:07 - 06:20:22	-4157
Toppenish/White Swan	06:09:14	-56.2	Dark	Down	49.2	211.2	Up	05:58:06 - 06:20:21	-4176
PNWRO	06:09:06	-57.2	Dark	Down	49.0	213.5	Up	05:57:58 - 06:20:13	-4204
The Dalles	06:09:16	-56.2	Dark	Down	50.2	210.5	Up	05:58:08 - 06:20:23	-4247
Maupin	06:09:15	-56.5	Dark	Down	50.5	210.9	Up	05:58:07 - 06:20:22	-4284
Sisters	06:09:16	-56.6	Dark	Down	51.4	210.8	Up	05:58:08 - 06:20:23	-4365
Bend	06:09:13	-56.9	Dark	Down	51.6	211.3	Up	05:58:05 - 06:20:20	-4386
Oregon Observatory	06:09:14	-56.9	Dark	Down	51.7	211.2	Up	05:58:06 - 06:20:21	-4402
Chiloquin	06:09:15	-57.3	Dark	Down	53.0	211.5	Up	05:58:07 - 06:20:22	-4525
Klamath Falls	06:09:14	-57.5	Dark	Down	53.3	211.9	Up	05:58:06 - 06:20:21	-4556
Cedarville	06:09:05	-58.9	Dark	Down	53.2	214.7	Up	05:57:58 - 06:20:13	-4617
Fall River/Burney	06:09:10	-58.3	Dark	Down	54.1	213.3	Up	05:58:03 - 06:20:18	-4666
Dunrhomin	06:07:56	-68.3	Dark	Down	46.3	234.8	Up	05:56:49 - 06:19:04	-4669
Nikitin	06:07:56	-68.4	Dark	Down	46.4	235.0	Up	05:56:48 - 06:19:03	-4686
CU-SBO	06:07:56	-68.4	Dark	Down	46.5	234.9	Up	05:56:49 - 06:19:04	-4693
Gimple	06:09:06	-59.0	Dark	Down	54.7	214.8	Up	05:57:59 - 06:20:14	-4751
Greenville	06:09:07	-59.0	Dark	Down	54.7	214.7	Up	05:58:00 - 06:20:15	-4751
Quincy	06:09:07	-59.1	Dark	Down	54.9	214.8	Up	05:57:59 - 06:20:14	-4770
Portola	06:09:04	-59.4	Dark	Down	54.8	215.6	Up	05:57:56 - 06:20:11	-4781
Reno	06:09:01	-60.0	Dark	Down	54.7	216.8	Up	05:57:53 - 06:20:08	-4804
Carson City	06:09:01	-60.2	Dark	Down	55.0	217.2	Up	05:57:53 - 06:20:08	-4839
Yerington	06:08:57	-60.7	Dark	Down	54.8	218.3	Up	05:57:49 - 06:20:04	-4856
Gardnerville	06:08:59	-60.3	Dark	Down	55.1	217.4	Up	05:57:51 - 06:20:06	-4862
Hawthorne	06:08:54	-61.3	Dark	Down	54.9	219.5	Up	05:57:47 - 06:20:02	-4899
Lee Vining	06:08:55	-61.2	Dark	Down	55.6	219.3	Up	05:57:48 - 06:20:03	-4955
Bishop	06:08:52	-61.9	Dark	Down	55.7	220.9	Up	05:57:44 - 06:19:59	-5011
Beatty	06:08:43	-63.3	Dark	Down	55.2	223.7	Up	05:57:35 - 06:19:50	-5051
Patrick	06:08:26	-66.0	Dark	Down	54.6	229.1	Up	05:57:18 - 06:19:33	-5185
Laughlin/Bullhead City	06:08:29	-65.6	Dark	Down	55.2	228.4	Up	05:57:21 - 06:19:36	-5213
Lake Havasu City	06:08:27	-66.0	Dark	Down	55.4	229.5	Up	05:57:19 - 06:19:34	-5279
Wildwood	06:08:48	-62.9	Dark	Down	58.2	223.9	Up	05:57:41 - 06:19:56	-5337
George/Scottsdale	06:08:14	-68.2	Dark	Down	54.4	233.5	Up	05:57:06 - 06:19:21	-5345
Idyllwild	06:08:37	-64.5	Dark	Down	57.4	227.1	Up	05:57:29 - 06:19:44	-5365
Calipatria	06:08:31	-65.6	Dark	Down	57.1	229.4	Up	05:57:23 - 06:19:38	-5423
Yuma	06:08:26	-66.5	Dark	Down	56.8	231.1	Up	05:57:19 - 06:19:34	-5463