RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1280:03449721 with event index number of 1387610

Geocentric closest approach at 2024/11/06 04:17:09 UTC

J2000 position of star is 07:41:41.8 +38:38:00
Equinox of date position of star is 07:43:20.5 +38:34:28
Stellar brightness G=12.8, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 162 degrees from the moon. Moon is 20% illuminated.
Apparent brightness V=19.0

[RECON map]
Object is 13.4 AU from the Sun and 13.0 AU from the Earth.
Apparent velocity is 7.0 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 74 seconds.
The 1-sigma cross-track error in the shadow position is 565 km.
The sky-plane scale is 9433.2 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 28.1 sec chord
Diameter=79.6 km assuming a 30% albedo -- 11.5 sec chord
Dynamical classification is CENTAURR

Star training set for 54598, (2024/11/06 04:17UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.2 +27:57:51  1.1 10.63 164
PPM 073096     07:48:18.5 +37:27:18  5.2  1.48 162
PPM 073011     07:41:54.8 +38:17:07  7.0  0.41 163
PPM 073055     07:44:51.5 +38:32:53 10.6  0.29 162
54598          07:43:22.1 +38:34:24 12.8       162
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=0.0 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 04:31:46 -38.3 Dark Down 12.8 42.8 Really Low 04:25:05 - 04:38:26 36

Victoria 04:31:55 -37.3 Dark Down 9.9 40.5 Really Low 04:25:14 - 04:38:35 29

Peachland 04:31:44 -39.0 Dark Down 12.3 43.1 Really Low 04:25:04 - 04:38:25 -64

Kelowna 04:31:43 -39.1 Dark Down 12.6 43.3 Really Low 04:25:03 - 04:38:24 -70

Summerland 04:31:43 -39.1 Dark Down 12.3 43.1 Really Low 04:25:03 - 04:38:24 -80

Penticton 04:31:43 -39.2 Dark Down 12.3 43.2 Really Low 04:25:03 - 04:38:24 -91

Oliver 04:31:43 -39.4 Dark Down 12.0 43.1 Really Low 04:25:03 - 04:38:24 -118

Anarchist Mountain Observatory 04:31:42 -39.5 Dark Down 12.0 43.2 Really Low 04:25:02 - 04:38:23 -141

Okanogan 04:31:43 -39.7 Dark Down 11.4 43.0 Really Low 04:25:02 - 04:38:23 -180

Manson/Chelan 04:31:44 -39.5 Dark Down 10.8 42.5 Really Low 04:25:04 - 04:38:25 -188

Brewster 04:31:44 -39.6 Dark Down 11.1 42.8 Really Low 04:25:03 - 04:38:24 -191

Wenatchee 04:31:45 -39.6 Dark Down 10.4 42.4 Really Low 04:25:04 - 04:38:25 -215

Ellensburg 04:31:45 -39.6 Dark Down 10.0 42.2 Really Low 04:25:04 - 04:38:25 -235

Yakima 04:31:44 -39.7 Dark Down 9.7 42.1 Really Low 04:25:04 - 04:38:25 -265

Toppenish/White Swan 04:31:44 -39.9 Dark Down 9.6 42.2 Really Low 04:25:03 - 04:38:24 -290

The Dalles 04:31:46 -39.6 Dark Down 8.6 41.6 Really Low 04:25:05 - 04:38:26 -305

Maupin 04:31:45 -39.8 Dark Down 8.4 41.7 Really Low 04:25:05 - 04:38:26 -342

Sisters 04:31:45 -39.8 Dark Down 7.5 41.3 Really Low 04:25:04 - 04:38:25 -380

PNWRO 04:31:38 -41.0 Dark Down 10.0 43.1 Really Low 04:24:58 - 04:38:19 -396

Bend 04:31:44 -40.0 Dark Down 7.4 41.4 Really Low 04:25:03 - 04:38:24 -412

Oregon Observatory 04:31:44 -40.0 Dark Down 7.2 41.3 Really Low 04:25:04 - 04:38:25 -417

Sleaford 04:30:52 -45.1 Dark Down 20.3 52.5 Low 04:24:12 - 04:37:33 -443

Chiloquin 04:31:43 -40.1 Dark Down 6.0 40.9 Really Low 04:25:02 - 04:38:23 -488

Klamath Falls 04:31:42 -40.2 Dark Down 5.8 41.0 Really Low 04:25:01 - 04:38:22 -518

Fall River/Burney 04:31:36 -40.8 Dark Down 5.1 41.1 Really Low 04:24:56 - 04:38:17 -624

Cedarville 04:31:35 -41.6 Dark Down 6.1 41.9 Really Low 04:24:54 - 04:38:15 -660

Greenville 04:31:34 -41.4 Dark Down 4.6 41.3 Really Low 04:24:53 - 04:38:14 -714

Gimple 04:31:34 -41.4 Dark Down 4.7 41.4 Really Low 04:24:53 - 04:38:14 -719

Quincy 04:31:33 -41.4 Dark Down 4.5 41.3 Really Low 04:24:53 - 04:38:14 -729

Portola 04:31:31 -41.8 Dark Down 4.6 41.6 Really Low 04:24:51 - 04:38:12 -766

Reno 04:31:28 -42.4 Dark Down 4.8 41.9 Really Low 04:24:47 - 04:38:08 -823

Carson City 04:31:27 -42.5 Dark Down 4.5 41.9 Really Low 04:24:46 - 04:38:07 -850

Gardnerville 04:31:24 -42.6 Dark Down 4.3 41.9 Really Low 04:24:44 - 04:38:05 -870

Yerington 04:31:23 -43.0 Dark Down 4.7 42.3 Really Low 04:24:43 - 04:38:04 -901

Hawthorne 04:31:20 -43.5 Dark Down 4.6 42.6 Really Low 04:24:40 - 04:38:01 -964

Lee Vining 04:31:20 -43.3 Dark Down 3.9 42.3 Really Low 04:24:39 - 04:38:00 -976

Bishop 04:31:15 -44.0 Dark Down 3.9 42.6 Really Low 04:24:34 - 04:37:55 -1061

Beatty 04:31:06 -45.3 Dark Down 4.4 43.5 Really Low 04:24:26 - 04:37:47 -1188

Wildwood 04:31:03 -44.5 Dark Down 1.3 42.4 Really Low 04:24:22 - 04:37:43 -1275

Idyllwild 04:30:53 -46.1 Dark Down 2.1 43.4 Really Low 04:24:12 - 04:37:33 -1414

Laughlin/Bullhead City 04:30:49 -47.4 Dark Down 4.3 44.6 Really Low 04:24:09 - 04:37:30 -1435

Patrick 04:30:47 -47.9 Dark Down 4.9 44.9 Really Low 04:24:07 - 04:37:28 -1458

Lake Havasu City 04:30:47 -47.8 Dark Down 4.0 44.7 Really Low 04:24:06 - 04:37:27 -1498

Dunrhomin 04:30:23 -52.3 Dark Down 13.2 50.1 Really Low 04:23:43 - 04:37:04 -1503

Nikitin 04:30:22 -52.4 Dark Down 13.1 50.0 Really Low 04:23:42 - 04:37:03 -1517

CU-SBO 04:30:24 -52.3 Dark Down 13.0 50.0 Really Low 04:23:43 - 04:37:04 -1519

Calipatria 04:30:45 -47.1 Dark Down 2.3 44.0 Really Low 04:24:04 - 04:37:25 -1525

Yuma 04:30:38 -47.9 Dark Down 2.5 44.4 Really Low 04:23:57 - 04:37:18 -1607

George/Scottsdale 04:30:29 -49.9 Dark Down 4.9 45.8 Really Low 04:23:49 - 04:37:10 -1689

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 54598, (2024/11/06 04:17UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 10.63 164
PPM 073096     07:46:39.3 +37:31:03  5.2  1.48 162
PPM 073011     07:40:14.6 +38:20:40  7.0  0.41 163
PPM 073055     07:43:11.2 +38:36:31 10.6  0.29 162
54598          07:41:41.8 +38:38:00 12.8       162
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:40:42 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)
Kamloops	04:31:46	-38.3	Dark	Down	12.8	42.8	Really Low	04:25:05 - 04:38:26	36
Victoria	04:31:55	-37.3	Dark	Down	9.9	40.5	Really Low	04:25:14 - 04:38:35	29
Peachland	04:31:44	-39.0	Dark	Down	12.3	43.1	Really Low	04:25:04 - 04:38:25	-64
Kelowna	04:31:43	-39.1	Dark	Down	12.6	43.3	Really Low	04:25:03 - 04:38:24	-70
Summerland	04:31:43	-39.1	Dark	Down	12.3	43.1	Really Low	04:25:03 - 04:38:24	-80
Penticton	04:31:43	-39.2	Dark	Down	12.3	43.2	Really Low	04:25:03 - 04:38:24	-91
Oliver	04:31:43	-39.4	Dark	Down	12.0	43.1	Really Low	04:25:03 - 04:38:24	-118
Anarchist Mountain Observatory	04:31:42	-39.5	Dark	Down	12.0	43.2	Really Low	04:25:02 - 04:38:23	-141
Okanogan	04:31:43	-39.7	Dark	Down	11.4	43.0	Really Low	04:25:02 - 04:38:23	-180
Manson/Chelan	04:31:44	-39.5	Dark	Down	10.8	42.5	Really Low	04:25:04 - 04:38:25	-188
Brewster	04:31:44	-39.6	Dark	Down	11.1	42.8	Really Low	04:25:03 - 04:38:24	-191
Wenatchee	04:31:45	-39.6	Dark	Down	10.4	42.4	Really Low	04:25:04 - 04:38:25	-215
Ellensburg	04:31:45	-39.6	Dark	Down	10.0	42.2	Really Low	04:25:04 - 04:38:25	-235
Yakima	04:31:44	-39.7	Dark	Down	9.7	42.1	Really Low	04:25:04 - 04:38:25	-265
Toppenish/White Swan	04:31:44	-39.9	Dark	Down	9.6	42.2	Really Low	04:25:03 - 04:38:24	-290
The Dalles	04:31:46	-39.6	Dark	Down	8.6	41.6	Really Low	04:25:05 - 04:38:26	-305
Maupin	04:31:45	-39.8	Dark	Down	8.4	41.7	Really Low	04:25:05 - 04:38:26	-342
Sisters	04:31:45	-39.8	Dark	Down	7.5	41.3	Really Low	04:25:04 - 04:38:25	-380
PNWRO	04:31:38	-41.0	Dark	Down	10.0	43.1	Really Low	04:24:58 - 04:38:19	-396
Bend	04:31:44	-40.0	Dark	Down	7.4	41.4	Really Low	04:25:03 - 04:38:24	-412
Oregon Observatory	04:31:44	-40.0	Dark	Down	7.2	41.3	Really Low	04:25:04 - 04:38:25	-417
Sleaford	04:30:52	-45.1	Dark	Down	20.3	52.5	Low	04:24:12 - 04:37:33	-443
Chiloquin	04:31:43	-40.1	Dark	Down	6.0	40.9	Really Low	04:25:02 - 04:38:23	-488
Klamath Falls	04:31:42	-40.2	Dark	Down	5.8	41.0	Really Low	04:25:01 - 04:38:22	-518
Fall River/Burney	04:31:36	-40.8	Dark	Down	5.1	41.1	Really Low	04:24:56 - 04:38:17	-624
Cedarville	04:31:35	-41.6	Dark	Down	6.1	41.9	Really Low	04:24:54 - 04:38:15	-660
Greenville	04:31:34	-41.4	Dark	Down	4.6	41.3	Really Low	04:24:53 - 04:38:14	-714
Gimple	04:31:34	-41.4	Dark	Down	4.7	41.4	Really Low	04:24:53 - 04:38:14	-719
Quincy	04:31:33	-41.4	Dark	Down	4.5	41.3	Really Low	04:24:53 - 04:38:14	-729
Portola	04:31:31	-41.8	Dark	Down	4.6	41.6	Really Low	04:24:51 - 04:38:12	-766
Reno	04:31:28	-42.4	Dark	Down	4.8	41.9	Really Low	04:24:47 - 04:38:08	-823
Carson City	04:31:27	-42.5	Dark	Down	4.5	41.9	Really Low	04:24:46 - 04:38:07	-850
Gardnerville	04:31:24	-42.6	Dark	Down	4.3	41.9	Really Low	04:24:44 - 04:38:05	-870
Yerington	04:31:23	-43.0	Dark	Down	4.7	42.3	Really Low	04:24:43 - 04:38:04	-901
Hawthorne	04:31:20	-43.5	Dark	Down	4.6	42.6	Really Low	04:24:40 - 04:38:01	-964
Lee Vining	04:31:20	-43.3	Dark	Down	3.9	42.3	Really Low	04:24:39 - 04:38:00	-976
Bishop	04:31:15	-44.0	Dark	Down	3.9	42.6	Really Low	04:24:34 - 04:37:55	-1061
Beatty	04:31:06	-45.3	Dark	Down	4.4	43.5	Really Low	04:24:26 - 04:37:47	-1188
Wildwood	04:31:03	-44.5	Dark	Down	1.3	42.4	Really Low	04:24:22 - 04:37:43	-1275
Idyllwild	04:30:53	-46.1	Dark	Down	2.1	43.4	Really Low	04:24:12 - 04:37:33	-1414
Laughlin/Bullhead City	04:30:49	-47.4	Dark	Down	4.3	44.6	Really Low	04:24:09 - 04:37:30	-1435
Patrick	04:30:47	-47.9	Dark	Down	4.9	44.9	Really Low	04:24:07 - 04:37:28	-1458
Lake Havasu City	04:30:47	-47.8	Dark	Down	4.0	44.7	Really Low	04:24:06 - 04:37:27	-1498
Dunrhomin	04:30:23	-52.3	Dark	Down	13.2	50.1	Really Low	04:23:43 - 04:37:04	-1503
Nikitin	04:30:22	-52.4	Dark	Down	13.1	50.0	Really Low	04:23:42 - 04:37:03	-1517
CU-SBO	04:30:24	-52.3	Dark	Down	13.0	50.0	Really Low	04:23:43 - 04:37:04	-1519
Calipatria	04:30:45	-47.1	Dark	Down	2.3	44.0	Really Low	04:24:04 - 04:37:25	-1525
Yuma	04:30:38	-47.9	Dark	Down	2.5	44.4	Really Low	04:23:57 - 04:37:18	-1607
George/Scottsdale	04:30:29	-49.9	Dark	Down	4.9	45.8	Really Low	04:23:49 - 04:37:10	-1689