RECON: TNO occultation with 523719

Event between (523719) 14LM28 and star GA1380:04926870 with event index number of 2292451

Geocentric closest approach at 2023/03/08 08:50:48 UTC

J2000 position of star is 18:09:18.7 +49:48:23
Equinox of date position of star is 18:09:53.1 +49:48:42
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 89 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 18.5 AU from the Sun and 18.6 AU from the Earth.
Apparent velocity is 37.9 km/sec on the sky relative to the star, or, 10.1 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is 2256 km.
The sky-plane scale is 13469.9 km/arcsec.

The object has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 1.6 sec chord
Diameter=25.8 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR

Star training set for 523719, (2023/03/08 08:51UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:43.4 +38:48:23  0.0 12.07  96
Etamin         17:57:08.7 +51:29:13  2.2  2.62  87
PPM 056821     18:07:41.1 +49:42:53  6.3  0.37  89
PPM 056855     18:09:28.4 +49:50:21  9.6  0.07  89
523719         18:09:53.4 +49:48:43 16.5        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 11.7 km RECON observability=1.0 and success probability=7.8%

Site Site mid-time
(UT) Sun alt
(deg) Sky Moon Star alt
(deg) Star az
(deg) Target Observing Time
(UT) X-track
(km)

Wildwood 08:51:06 -59.0 Dark Up 24.0 44.9 Low 08:42:35 - 08:59:38 4460

Idyllwild 08:51:03 -58.6 Dark Up 24.8 45.3 Low 08:42:31 - 08:59:34 4438

Calipatria 08:50:59 -58.7 Dark Up 25.1 45.4 Low 08:42:28 - 08:59:31 4434

Yuma 08:50:56 -58.7 Dark Up 25.3 45.5 Low 08:42:25 - 08:59:28 4429

Lake Havasu City 08:51:00 -57.0 Dark Up 26.8 46.3 Low 08:42:29 - 08:59:32 4351

Laughlin/Bullhead City 08:51:01 -56.6 Dark Up 27.1 46.4 Low 08:42:30 - 08:59:33 4329

George/Scottsdale 08:50:54 -56.6 Dark Up 27.7 46.6 Low 08:42:22 - 08:59:25 4317

Bishop 08:51:12 -55.9 Dark Up 26.4 46.1 Low 08:42:41 - 08:59:44 4312

Beatty 08:51:08 -55.8 Dark Up 27.0 46.4 Low 08:42:37 - 08:59:40 4302

Patrick 08:51:01 -56.1 Dark Up 27.7 46.7 Low 08:42:30 - 08:59:33 4302

Lee Vining 08:51:15 -55.5 Dark Up 26.4 46.0 Low 08:42:43 - 08:59:46 4297

Hawthorne 08:51:15 -54.8 Dark Up 27.1 46.4 Low 08:42:43 - 08:59:46 4261

Gardnerville 08:51:18 -54.7 Dark Up 26.7 46.2 Low 08:42:46 - 08:59:49 4259

Carson City 08:51:18 -54.5 Dark Up 26.9 46.2 Low 08:42:46 - 08:59:49 4247

Yerington 08:51:17 -54.5 Dark Up 27.1 46.4 Low 08:42:46 - 08:59:49 4247

Reno 08:51:19 -54.2 Dark Up 27.1 46.4 Low 08:42:47 - 08:59:50 4230

Portola 08:51:21 -54.1 Dark Up 26.9 46.2 Low 08:42:49 - 08:59:52 4226

Quincy 08:51:21 -54.0 Dark Up 26.8 46.1 Low 08:42:49 - 08:59:52 4225

Greenville 08:51:21 -53.8 Dark Up 26.9 46.2 Low 08:42:50 - 08:59:53 4215

Gimple 08:51:21 -53.8 Dark Up 27.0 46.2 Low 08:42:50 - 08:59:53 4214

Fall River/Burney 08:51:24 -53.0 Dark Up 27.3 46.3 Low 08:42:53 - 08:59:56 4173

Cedarville 08:51:23 -52.3 Dark Up 28.3 47.0 Low 08:42:52 - 08:59:55 4131

Klamath Falls 08:51:27 -52.0 Dark Up 27.9 46.6 Low 08:42:55 - 08:59:58 4114

Chiloquin 08:51:28 -51.7 Dark Up 28.1 46.7 Low 08:42:56 - 08:59:59 4095

Oregon Observatory 08:51:29 -50.3 Dark Up 29.2 47.4 Low 08:42:58 - 09:00:01 4015

Bend 08:51:30 -50.1 Dark Up 29.4 47.6 Low 08:42:58 - 09:00:01 4003

Sisters 08:51:31 -49.9 Dark Up 29.4 47.6 Low 08:42:59 - 09:00:02 3992

Maupin 08:51:32 -49.0 Dark Up 30.3 48.1 Up 08:43:00 - 09:00:03 3933

The Dalles 08:51:32 -48.6 Dark Up 30.5 48.3 Up 08:43:00 - 09:00:03 3908

PNWRO 08:51:29 -47.8 Dark Up 32.0 49.5 Up 08:42:58 - 09:00:01 3852

Toppenish/White Swan 08:51:32 -47.7 Dark Up 31.4 49.0 Up 08:43:00 - 09:00:03 3851

Yakima 08:51:33 -47.5 Dark Up 31.5 49.0 Up 08:43:02 - 09:00:05 3839

CU-SBO 08:50:56 -48.4 Dark Up 35.8 51.4 Up 08:42:25 - 08:59:28 3838

Nikitin 08:50:57 -48.3 Dark Up 35.9 51.4 Up 08:42:26 - 08:59:29 3833

Dunrhomin 08:50:58 -48.2 Dark Up 36.0 51.5 Up 08:42:26 - 08:59:29 3823

Ellensburg 08:51:34 -47.1 Dark Up 31.8 49.2 Up 08:43:02 - 09:00:05 3814

Wenatchee 08:51:34 -46.7 Dark Up 32.2 49.5 Up 08:43:02 - 09:00:05 3784

Manson/Chelan 08:51:34 -46.2 Dark Up 32.6 49.8 Up 08:43:03 - 09:00:06 3752

Victoria 08:51:41 -46.0 Dark Up 31.3 48.6 Up 08:43:09 - 09:00:12 3746

Brewster 08:51:34 -45.9 Dark Up 32.9 50.1 Up 08:43:03 - 09:00:06 3733

Okanogan 08:51:34 -45.6 Dark Up 33.2 50.3 Up 08:43:03 - 09:00:06 3713

Anarchist Mountain Observatory 08:51:35 -45.0 Dark Up 33.7 50.8 Up 08:43:04 - 09:00:07 3669

Oliver 08:51:36 -44.8 Dark Up 33.7 50.8 Up 08:43:04 - 09:00:07 3659

Penticton 08:51:36 -44.5 Dark Up 33.9 50.9 Up 08:43:05 - 09:00:08 3636

Summerland 08:51:37 -44.5 Dark Up 33.9 50.9 Up 08:43:05 - 09:00:08 3633

Peachland 08:51:37 -44.3 Dark Up 33.9 51.0 Up 08:43:05 - 09:00:08 3624

Kelowna 08:51:37 -44.2 Dark Up 34.2 51.2 Up 08:43:05 - 09:00:08 3613

Kamloops 08:51:40 -43.5 Dark Up 34.2 51.1 Up 08:43:08 - 09:00:11 3569

Sleaford 08:51:24 -38.8 Dark Up 42.4 59.3 Up 08:42:53 - 08:59:56 3185

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 523719, (2023/03/08 08:51UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 12.07  96
Etamin         17:56:36.3 +51:29:20  2.2  2.62  87
PPM 056821     18:07:06.3 +49:42:38  6.3  0.37  89
PPM 056855     18:08:53.7 +49:50:02  9.6  0.07  89
523719         18:09:18.7 +49:48:23 16.5        89
Positions are for J2000

Event circumstances last updated at 2023/01/09 03:34:20 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)
Wildwood	08:51:06	-59.0	Dark	Up	24.0	44.9	Low	08:42:35 - 08:59:38	4460
Idyllwild	08:51:03	-58.6	Dark	Up	24.8	45.3	Low	08:42:31 - 08:59:34	4438
Calipatria	08:50:59	-58.7	Dark	Up	25.1	45.4	Low	08:42:28 - 08:59:31	4434
Yuma	08:50:56	-58.7	Dark	Up	25.3	45.5	Low	08:42:25 - 08:59:28	4429
Lake Havasu City	08:51:00	-57.0	Dark	Up	26.8	46.3	Low	08:42:29 - 08:59:32	4351
Laughlin/Bullhead City	08:51:01	-56.6	Dark	Up	27.1	46.4	Low	08:42:30 - 08:59:33	4329
George/Scottsdale	08:50:54	-56.6	Dark	Up	27.7	46.6	Low	08:42:22 - 08:59:25	4317
Bishop	08:51:12	-55.9	Dark	Up	26.4	46.1	Low	08:42:41 - 08:59:44	4312
Beatty	08:51:08	-55.8	Dark	Up	27.0	46.4	Low	08:42:37 - 08:59:40	4302
Patrick	08:51:01	-56.1	Dark	Up	27.7	46.7	Low	08:42:30 - 08:59:33	4302
Lee Vining	08:51:15	-55.5	Dark	Up	26.4	46.0	Low	08:42:43 - 08:59:46	4297
Hawthorne	08:51:15	-54.8	Dark	Up	27.1	46.4	Low	08:42:43 - 08:59:46	4261
Gardnerville	08:51:18	-54.7	Dark	Up	26.7	46.2	Low	08:42:46 - 08:59:49	4259
Carson City	08:51:18	-54.5	Dark	Up	26.9	46.2	Low	08:42:46 - 08:59:49	4247
Yerington	08:51:17	-54.5	Dark	Up	27.1	46.4	Low	08:42:46 - 08:59:49	4247
Reno	08:51:19	-54.2	Dark	Up	27.1	46.4	Low	08:42:47 - 08:59:50	4230
Portola	08:51:21	-54.1	Dark	Up	26.9	46.2	Low	08:42:49 - 08:59:52	4226
Quincy	08:51:21	-54.0	Dark	Up	26.8	46.1	Low	08:42:49 - 08:59:52	4225
Greenville	08:51:21	-53.8	Dark	Up	26.9	46.2	Low	08:42:50 - 08:59:53	4215
Gimple	08:51:21	-53.8	Dark	Up	27.0	46.2	Low	08:42:50 - 08:59:53	4214
Fall River/Burney	08:51:24	-53.0	Dark	Up	27.3	46.3	Low	08:42:53 - 08:59:56	4173
Cedarville	08:51:23	-52.3	Dark	Up	28.3	47.0	Low	08:42:52 - 08:59:55	4131
Klamath Falls	08:51:27	-52.0	Dark	Up	27.9	46.6	Low	08:42:55 - 08:59:58	4114
Chiloquin	08:51:28	-51.7	Dark	Up	28.1	46.7	Low	08:42:56 - 08:59:59	4095
Oregon Observatory	08:51:29	-50.3	Dark	Up	29.2	47.4	Low	08:42:58 - 09:00:01	4015
Bend	08:51:30	-50.1	Dark	Up	29.4	47.6	Low	08:42:58 - 09:00:01	4003
Sisters	08:51:31	-49.9	Dark	Up	29.4	47.6	Low	08:42:59 - 09:00:02	3992
Maupin	08:51:32	-49.0	Dark	Up	30.3	48.1	Up	08:43:00 - 09:00:03	3933
The Dalles	08:51:32	-48.6	Dark	Up	30.5	48.3	Up	08:43:00 - 09:00:03	3908
PNWRO	08:51:29	-47.8	Dark	Up	32.0	49.5	Up	08:42:58 - 09:00:01	3852
Toppenish/White Swan	08:51:32	-47.7	Dark	Up	31.4	49.0	Up	08:43:00 - 09:00:03	3851
Yakima	08:51:33	-47.5	Dark	Up	31.5	49.0	Up	08:43:02 - 09:00:05	3839
CU-SBO	08:50:56	-48.4	Dark	Up	35.8	51.4	Up	08:42:25 - 08:59:28	3838
Nikitin	08:50:57	-48.3	Dark	Up	35.9	51.4	Up	08:42:26 - 08:59:29	3833
Dunrhomin	08:50:58	-48.2	Dark	Up	36.0	51.5	Up	08:42:26 - 08:59:29	3823
Ellensburg	08:51:34	-47.1	Dark	Up	31.8	49.2	Up	08:43:02 - 09:00:05	3814
Wenatchee	08:51:34	-46.7	Dark	Up	32.2	49.5	Up	08:43:02 - 09:00:05	3784
Manson/Chelan	08:51:34	-46.2	Dark	Up	32.6	49.8	Up	08:43:03 - 09:00:06	3752
Victoria	08:51:41	-46.0	Dark	Up	31.3	48.6	Up	08:43:09 - 09:00:12	3746
Brewster	08:51:34	-45.9	Dark	Up	32.9	50.1	Up	08:43:03 - 09:00:06	3733
Okanogan	08:51:34	-45.6	Dark	Up	33.2	50.3	Up	08:43:03 - 09:00:06	3713
Anarchist Mountain Observatory	08:51:35	-45.0	Dark	Up	33.7	50.8	Up	08:43:04 - 09:00:07	3669
Oliver	08:51:36	-44.8	Dark	Up	33.7	50.8	Up	08:43:04 - 09:00:07	3659
Penticton	08:51:36	-44.5	Dark	Up	33.9	50.9	Up	08:43:05 - 09:00:08	3636
Summerland	08:51:37	-44.5	Dark	Up	33.9	50.9	Up	08:43:05 - 09:00:08	3633
Peachland	08:51:37	-44.3	Dark	Up	33.9	51.0	Up	08:43:05 - 09:00:08	3624
Kelowna	08:51:37	-44.2	Dark	Up	34.2	51.2	Up	08:43:05 - 09:00:08	3613
Kamloops	08:51:40	-43.5	Dark	Up	34.2	51.1	Up	08:43:08 - 09:00:11	3569
Sleaford	08:51:24	-38.8	Dark	Up	42.4	59.3	Up	08:42:53 - 08:59:56	3185