RECON: TNO occultation with 523763

Event between (523763) 14WZ509 and star GA0860:03769717 with event index number of 2294866

Geocentric closest approach at 2022/12/28 07:47:15 UTC

J2000 position of star is 09:39:03.3 -02:30:30
Equinox of date position of star is 09:40:10.8 -02:36:34
Stellar brightness G=13.3, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 43.9 AU from the Sun and 43.3 AU from the Earth.
The TNO is moving 16.0 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 177 seconds.
The 1-sigma cross-track error in the shadow position is 1869 km.
The sky-plane scale is 31388.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=465.6 km assuming a 5% albedo -- 29.1 sec chord
Diameter=190.1 km assuming a 30% albedo -- 11.9 sec chord
Dynamical classification is SCATEXTD

Star training set for 523763, (2022/12/28 07:47UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:35.7 +11:51:14  1.3 16.20 165
Alphard        09:28:43.0 -08:45:34  2.0  6.78 148
35Iot Hya      09:41:01.8 -01:14:54  3.9  1.38 155
PPM 177929     09:39:37.9 -03:01:58  8.4  0.44 154
PPM 177934     09:40:31.7 -02:46:32  9.5  0.18 154
523763         09:40:13.2 -02:36:47 13.3       154
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 5.1 sigma about the mid-time.
The median site spacing is 22.7 km RECON observability=1.0 and success probability=16.5%

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

Sleaford 07:49:15 -60.0 Dark Down 27.3 137.9 Low 07:34:15 - 08:04:15 2628

Kamloops 07:50:05 -62.5 Dark Down 21.5 123.7 Low 07:35:05 - 08:05:05 2569

Kelowna 07:50:06 -63.4 Dark Down 22.4 124.2 Low 07:35:06 - 08:05:06 2517

Peachland 07:50:08 -63.5 Dark Down 22.3 123.9 Low 07:35:08 - 08:05:08 2510

Summerland 07:50:08 -63.6 Dark Down 22.4 123.9 Low 07:35:08 - 08:05:08 2501

Penticton 07:50:08 -63.7 Dark Down 22.5 124.0 Low 07:35:08 - 08:05:08 2496

Oliver 07:50:09 -64.0 Dark Down 22.7 123.9 Low 07:35:09 - 08:05:09 2474

Anarchist Mountain Observatory 07:50:09 -64.2 Dark Down 22.9 124.0 Low 07:35:09 - 08:05:09 2463

Tonasket 07:50:11 -64.5 Dark Down 23.1 123.9 Low 07:35:11 - 08:05:11 2442

Victoria 07:50:23 -64.3 Dark Down 21.0 120.3 Low 07:35:23 - 08:05:23 2435

Okanogan 07:50:13 -64.8 Dark Down 23.2 123.6 Low 07:35:13 - 08:05:13 2420

Brewster 07:50:15 -65.1 Dark Down 23.2 123.3 Low 07:35:15 - 08:05:15 2403

Manson/Chelan 07:50:17 -65.3 Dark Down 23.1 122.9 Low 07:35:17 - 08:05:17 2389

Wenatchee 07:50:19 -65.7 Dark Down 23.3 122.6 Low 07:35:19 - 08:05:19 2358

Ellensburg 07:50:22 -66.1 Dark Down 23.4 122.3 Low 07:35:22 - 08:05:22 2330

Yakima 07:50:24 -66.5 Dark Down 23.6 122.1 Low 07:35:24 - 08:05:24 2302

Toppenish/White Swan 07:50:24 -66.8 Dark Down 23.8 122.2 Low 07:35:24 - 08:05:24 2287

PNWRO 07:50:21 -67.2 Dark Down 24.9 123.4 Low 07:35:21 - 08:05:21 2260

Goldendale 07:50:28 -67.3 Dark Down 23.9 121.6 Low 07:35:28 - 08:05:28 2250

The Dalles 07:50:30 -67.5 Dark Down 23.8 121.2 Low 07:35:30 - 08:05:30 2234

Maupin 07:50:31 -67.9 Dark Down 24.1 121.2 Low 07:35:31 - 08:05:31 2205

Sisters 07:50:36 -68.7 Dark Down 24.2 120.4 Low 07:35:36 - 08:05:36 2143

Bend 07:50:36 -69.0 Dark Down 24.5 120.5 Low 07:35:36 - 08:05:36 2126

Oregon Observatory 07:50:37 -69.1 Dark Down 24.5 120.4 Low 07:35:37 - 08:05:37 2113

North Lake 07:50:39 -69.8 Dark Down 25.2 120.6 Low 07:35:39 - 08:05:39 2066

Chiloquin 07:50:44 -70.3 Dark Down 24.9 119.5 Low 07:35:44 - 08:05:44 2017

Klamath Falls 07:50:45 -70.7 Dark Down 25.2 119.4 Low 07:35:45 - 08:05:45 1991

Lakeview 07:50:41 -70.9 Dark Down 26.1 120.6 Low 07:35:41 - 08:05:41 1987

Cedarville 07:50:43 -71.6 Dark Down 26.5 120.5 Low 07:35:43 - 08:05:43 1937

Fall River/Burney 07:50:49 -71.9 Dark Down 26.0 119.3 Low 07:35:49 - 08:05:49 1902

Susanville 07:50:49 -72.6 Dark Down 26.8 119.6 Low 07:35:49 - 08:05:49 1852

Greenville 07:50:51 -72.9 Dark Down 26.7 119.3 Low 07:35:51 - 08:05:51 1831

Gimple 07:50:51 -72.9 Dark Down 26.8 119.3 Low 07:35:51 - 08:05:51 1831

Quincy 07:50:51 -73.1 Dark Down 26.8 119.2 Low 07:35:51 - 08:05:51 1815

Portola 07:50:51 -73.3 Dark Down 27.2 119.5 Low 07:35:51 - 08:05:51 1805

Dunrhomin 07:49:51 -70.3 Dark Down 36.2 133.7 Up 07:34:51 - 08:04:51 1802

Reno 07:50:49 -73.6 Dark Down 27.8 120.0 Low 07:35:49 - 08:05:49 1783

CU-SBO 07:49:52 -70.5 Dark Down 36.3 133.5 Up 07:34:52 - 08:04:52 1783

Carson City 07:50:51 -74.0 Dark Down 28.0 119.8 Low 07:35:51 - 08:05:51 1755

Yerington 07:50:49 -74.2 Dark Down 28.5 120.2 Low 07:35:49 - 08:05:49 1738

Gardnerville 07:50:51 -74.2 Dark Down 28.1 119.7 Low 07:35:51 - 08:05:51 1735

Hawthorne 07:50:49 -74.7 Dark Down 29.1 120.5 Low 07:35:49 - 08:05:49 1700

Tonopah 07:50:46 -75.2 Dark Down 30.3 121.4 Up 07:35:46 - 08:05:46 1660

Lee Vining 07:50:53 -75.2 Dark Down 29.1 119.8 Low 07:35:53 - 08:05:53 1656

Bishop 07:50:53 -75.9 Dark Down 29.9 120.1 Low 07:35:53 - 08:05:53 1606

Beatty 07:50:48 -76.4 Dark Down 31.2 121.2 Up 07:35:48 - 08:05:48 1565

Indian Springs 07:50:45 -76.6 Dark Down 32.1 122.0 Up 07:35:45 - 08:05:45 1535

Henderson 07:50:44 -77.1 Dark Down 32.9 122.3 Up 07:35:44 - 08:05:44 1489

Patrick 07:50:42 -77.5 Dark Down 34.0 122.9 Up 07:35:42 - 08:05:42 1434

Kingman/Dolan Springs 07:50:44 -77.8 Dark Down 34.0 122.6 Up 07:35:44 - 08:05:44 1416

Laughlin/Bullhead City 07:50:46 -77.9 Dark Down 33.6 122.2 Up 07:35:46 - 08:05:46 1415

Mohave Valley 07:50:46 -78.1 Dark Down 33.8 122.0 Up 07:35:46 - 08:05:46 1392

Lake Havasu City 07:50:47 -78.5 Dark Down 34.1 122.0 Up 07:35:47 - 08:05:47 1357

Wildwood 07:51:05 -79.1 Dark Down 31.3 118.3 Up 07:36:05 - 08:06:05 1332

Parker 07:50:48 -78.8 Dark Down 34.4 121.8 Up 07:35:48 - 08:05:48 1327

Idyllwild 07:50:59 -79.5 Dark Down 32.9 119.6 Up 07:35:59 - 08:05:59 1298

George/Scottsdale 07:50:39 -78.5 Dark Down 36.3 123.7 Up 07:35:39 - 08:05:39 1284

Calipatria 07:50:56 -80.0 Dark Down 34.0 120.2 Up 07:35:56 - 08:05:56 1242

Yuma 07:50:54 -80.3 Dark Down 34.9 120.7 Up 07:35:54 - 08:05:54 1202

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 523763, (2022/12/28 07:47UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 16.20 165
Alphard        09:27:35.2 -08:39:30  2.0  6.78 148
35Iot Hya      09:39:51.4 -01:08:36  3.9  1.38 155
PPM 177929     09:38:28.1 -02:55:42  8.4  0.44 154
PPM 177934     09:39:21.8 -02:40:14  9.5  0.18 154
523763         09:39:03.3 -02:30:30 13.3       154
Positions are for J2000

Event circumstances last updated at 2022/03/12 01:50:19 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	07:49:15	-60.0	Dark	Down	27.3	137.9	Low	07:34:15 - 08:04:15	2628
Kamloops	07:50:05	-62.5	Dark	Down	21.5	123.7	Low	07:35:05 - 08:05:05	2569
Kelowna	07:50:06	-63.4	Dark	Down	22.4	124.2	Low	07:35:06 - 08:05:06	2517
Peachland	07:50:08	-63.5	Dark	Down	22.3	123.9	Low	07:35:08 - 08:05:08	2510
Summerland	07:50:08	-63.6	Dark	Down	22.4	123.9	Low	07:35:08 - 08:05:08	2501
Penticton	07:50:08	-63.7	Dark	Down	22.5	124.0	Low	07:35:08 - 08:05:08	2496
Oliver	07:50:09	-64.0	Dark	Down	22.7	123.9	Low	07:35:09 - 08:05:09	2474
Anarchist Mountain Observatory	07:50:09	-64.2	Dark	Down	22.9	124.0	Low	07:35:09 - 08:05:09	2463
Tonasket	07:50:11	-64.5	Dark	Down	23.1	123.9	Low	07:35:11 - 08:05:11	2442
Victoria	07:50:23	-64.3	Dark	Down	21.0	120.3	Low	07:35:23 - 08:05:23	2435
Okanogan	07:50:13	-64.8	Dark	Down	23.2	123.6	Low	07:35:13 - 08:05:13	2420
Brewster	07:50:15	-65.1	Dark	Down	23.2	123.3	Low	07:35:15 - 08:05:15	2403
Manson/Chelan	07:50:17	-65.3	Dark	Down	23.1	122.9	Low	07:35:17 - 08:05:17	2389
Wenatchee	07:50:19	-65.7	Dark	Down	23.3	122.6	Low	07:35:19 - 08:05:19	2358
Ellensburg	07:50:22	-66.1	Dark	Down	23.4	122.3	Low	07:35:22 - 08:05:22	2330
Yakima	07:50:24	-66.5	Dark	Down	23.6	122.1	Low	07:35:24 - 08:05:24	2302
Toppenish/White Swan	07:50:24	-66.8	Dark	Down	23.8	122.2	Low	07:35:24 - 08:05:24	2287
PNWRO	07:50:21	-67.2	Dark	Down	24.9	123.4	Low	07:35:21 - 08:05:21	2260
Goldendale	07:50:28	-67.3	Dark	Down	23.9	121.6	Low	07:35:28 - 08:05:28	2250
The Dalles	07:50:30	-67.5	Dark	Down	23.8	121.2	Low	07:35:30 - 08:05:30	2234
Maupin	07:50:31	-67.9	Dark	Down	24.1	121.2	Low	07:35:31 - 08:05:31	2205
Sisters	07:50:36	-68.7	Dark	Down	24.2	120.4	Low	07:35:36 - 08:05:36	2143
Bend	07:50:36	-69.0	Dark	Down	24.5	120.5	Low	07:35:36 - 08:05:36	2126
Oregon Observatory	07:50:37	-69.1	Dark	Down	24.5	120.4	Low	07:35:37 - 08:05:37	2113
North Lake	07:50:39	-69.8	Dark	Down	25.2	120.6	Low	07:35:39 - 08:05:39	2066
Chiloquin	07:50:44	-70.3	Dark	Down	24.9	119.5	Low	07:35:44 - 08:05:44	2017
Klamath Falls	07:50:45	-70.7	Dark	Down	25.2	119.4	Low	07:35:45 - 08:05:45	1991
Lakeview	07:50:41	-70.9	Dark	Down	26.1	120.6	Low	07:35:41 - 08:05:41	1987
Cedarville	07:50:43	-71.6	Dark	Down	26.5	120.5	Low	07:35:43 - 08:05:43	1937
Fall River/Burney	07:50:49	-71.9	Dark	Down	26.0	119.3	Low	07:35:49 - 08:05:49	1902
Susanville	07:50:49	-72.6	Dark	Down	26.8	119.6	Low	07:35:49 - 08:05:49	1852
Greenville	07:50:51	-72.9	Dark	Down	26.7	119.3	Low	07:35:51 - 08:05:51	1831
Gimple	07:50:51	-72.9	Dark	Down	26.8	119.3	Low	07:35:51 - 08:05:51	1831
Quincy	07:50:51	-73.1	Dark	Down	26.8	119.2	Low	07:35:51 - 08:05:51	1815
Portola	07:50:51	-73.3	Dark	Down	27.2	119.5	Low	07:35:51 - 08:05:51	1805
Dunrhomin	07:49:51	-70.3	Dark	Down	36.2	133.7	Up	07:34:51 - 08:04:51	1802
Reno	07:50:49	-73.6	Dark	Down	27.8	120.0	Low	07:35:49 - 08:05:49	1783
CU-SBO	07:49:52	-70.5	Dark	Down	36.3	133.5	Up	07:34:52 - 08:04:52	1783
Carson City	07:50:51	-74.0	Dark	Down	28.0	119.8	Low	07:35:51 - 08:05:51	1755
Yerington	07:50:49	-74.2	Dark	Down	28.5	120.2	Low	07:35:49 - 08:05:49	1738
Gardnerville	07:50:51	-74.2	Dark	Down	28.1	119.7	Low	07:35:51 - 08:05:51	1735
Hawthorne	07:50:49	-74.7	Dark	Down	29.1	120.5	Low	07:35:49 - 08:05:49	1700
Tonopah	07:50:46	-75.2	Dark	Down	30.3	121.4	Up	07:35:46 - 08:05:46	1660
Lee Vining	07:50:53	-75.2	Dark	Down	29.1	119.8	Low	07:35:53 - 08:05:53	1656
Bishop	07:50:53	-75.9	Dark	Down	29.9	120.1	Low	07:35:53 - 08:05:53	1606
Beatty	07:50:48	-76.4	Dark	Down	31.2	121.2	Up	07:35:48 - 08:05:48	1565
Indian Springs	07:50:45	-76.6	Dark	Down	32.1	122.0	Up	07:35:45 - 08:05:45	1535
Henderson	07:50:44	-77.1	Dark	Down	32.9	122.3	Up	07:35:44 - 08:05:44	1489
Patrick	07:50:42	-77.5	Dark	Down	34.0	122.9	Up	07:35:42 - 08:05:42	1434
Kingman/Dolan Springs	07:50:44	-77.8	Dark	Down	34.0	122.6	Up	07:35:44 - 08:05:44	1416
Laughlin/Bullhead City	07:50:46	-77.9	Dark	Down	33.6	122.2	Up	07:35:46 - 08:05:46	1415
Mohave Valley	07:50:46	-78.1	Dark	Down	33.8	122.0	Up	07:35:46 - 08:05:46	1392
Lake Havasu City	07:50:47	-78.5	Dark	Down	34.1	122.0	Up	07:35:47 - 08:05:47	1357
Wildwood	07:51:05	-79.1	Dark	Down	31.3	118.3	Up	07:36:05 - 08:06:05	1332
Parker	07:50:48	-78.8	Dark	Down	34.4	121.8	Up	07:35:48 - 08:05:48	1327
Idyllwild	07:50:59	-79.5	Dark	Down	32.9	119.6	Up	07:35:59 - 08:05:59	1298
George/Scottsdale	07:50:39	-78.5	Dark	Down	36.3	123.7	Up	07:35:39 - 08:05:39	1284
Calipatria	07:50:56	-80.0	Dark	Down	34.0	120.2	Up	07:35:56 - 08:05:56	1242
Yuma	07:50:54	-80.3	Dark	Down	34.9	120.7	Up	07:35:54 - 08:05:54	1202