RECON: TNO occultation with 547893

Event between (547893) 10WN75 and star GA0860:01600496 with event index number of 2700329

Geocentric closest approach at 2029/02/16 05:43:38 UTC

J2000 position of star is 06:42:42.1 -02:05:15
Equinox of date position of star is 06:43:56.2 -02:06:47
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon. Moon is 7% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 37.0 AU from the Sun and 36.4 AU from the Earth.
Apparent velocity is 19.3 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 194 seconds.
The 1-sigma cross-track error in the shadow position is 3376 km.
The sky-plane scale is 26394.1 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=436.5 km assuming a 5% albedo -- 22.1 sec chord
Diameter=178.2 km assuming a 30% albedo -- 9.0 sec chord
Dynamical classification is SCATEXTD

Star training set for 547893, (2029/02/16 05:44UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:26.1 -16:45:21 -1.5 14.65 105
Saiph          05:49:08.3 -09:39:41  2.1 15.62  91
PPM 176439     06:49:47.7 -01:21:12  5.6  1.60 105
PPM 176376     06:42:51.4 -02:22:50  8.3  0.42 104
PPM 176393     06:44:28.6 -02:07:51  8.7  0.08 104
547893         06:44:10.2 -02:07:05 16.0       104
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 4.6 sigma about the mid-time.
The median site spacing is 12.9 km RECON observability=1.0 and success probability=12.1%

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

Sleaford 05:45:05 -46.0 Dark Down 31.5 211.1 Up 05:30:05 - 06:00:05 2253

Dunrhomin 05:44:20 -55.6 Dark Down 41.1 216.7 Up 05:29:20 - 05:59:20 1825

Nikitin 05:44:19 -55.8 Dark Down 41.3 216.7 Up 05:29:19 - 05:59:19 1816

CU-SBO 05:44:19 -55.8 Dark Down 41.4 216.7 Up 05:29:19 - 05:59:19 1809

Kelowna 05:45:35 -41.9 Dark Down 36.9 196.0 Up 05:30:35 - 06:00:35 1648

Kamloops 05:45:40 -41.0 Dark Down 36.3 194.8 Up 05:30:40 - 06:00:40 1647

Peachland 05:45:36 -41.8 Dark Down 37.1 195.7 Up 05:30:36 - 06:00:36 1630

Penticton 05:45:36 -42.1 Dark Down 37.2 196.0 Up 05:30:36 - 06:00:36 1629

Summerland 05:45:36 -42.0 Dark Down 37.2 195.8 Up 05:30:36 - 06:00:36 1627

Anarchist Mountain Observatory 05:45:32 -42.5 Dark Down 37.7 196.3 Up 05:30:32 - 06:00:32 1614

Oliver 05:45:33 -42.3 Dark Down 37.6 196.0 Up 05:30:33 - 06:00:33 1613

Okanogan 05:45:32 -42.7 Dark Down 38.4 196.2 Up 05:30:32 - 06:00:32 1575

Brewster 05:45:32 -42.8 Dark Down 38.7 196.0 Up 05:30:32 - 06:00:32 1553

Manson/Chelan 05:45:32 -42.7 Dark Down 38.9 195.6 Up 05:30:32 - 06:00:32 1527

Wenatchee 05:45:31 -42.9 Dark Down 39.4 195.4 Up 05:30:31 - 06:00:31 1497

PNWRO 05:45:23 -44.5 Dark Down 40.5 197.6 Up 05:30:23 - 06:00:23 1491

Ellensburg 05:45:32 -43.0 Dark Down 39.9 195.3 Up 05:30:32 - 06:00:32 1467

Yakima 05:45:29 -43.3 Dark Down 40.3 195.3 Up 05:30:29 - 06:00:29 1446

Toppenish/White Swan 05:45:28 -43.5 Dark Down 40.4 195.6 Up 05:30:28 - 06:00:28 1443

Victoria 05:45:44 -40.6 Dark Down 38.8 191.4 Up 05:30:44 - 06:00:44 1418

The Dalles 05:45:28 -43.4 Dark Down 41.3 194.7 Up 05:30:28 - 06:00:28 1368

Maupin 05:45:27 -43.7 Dark Down 41.7 195.0 Up 05:30:27 - 06:00:27 1351

Sisters 05:45:27 -43.9 Dark Down 42.7 194.5 Up 05:30:27 - 06:00:27 1283

Bend 05:45:25 -44.2 Dark Down 42.8 194.9 Up 05:30:25 - 06:00:25 1282

Oregon Observatory 05:45:25 -44.2 Dark Down 43.0 194.8 Up 05:30:25 - 06:00:25 1267

Cedarville 05:45:14 -46.2 Dark Down 45.0 197.1 Up 05:30:14 - 06:00:14 1197

Chiloquin 05:45:22 -44.6 Dark Down 44.4 194.5 Up 05:30:22 - 06:00:22 1175

Klamath Falls 05:45:21 -44.8 Dark Down 44.7 194.7 Up 05:30:21 - 06:00:21 1159

Patrick 05:44:31 -53.5 Dark Down 48.9 208.2 Up 05:29:31 - 05:59:31 1154

George/Scottsdale 05:44:18 -55.7 Dark Down 49.5 211.9 Up 05:29:18 - 05:59:18 1154

Fall River/Burney 05:45:16 -45.7 Dark Down 45.8 195.5 Up 05:30:16 - 06:00:16 1110

Laughlin/Bullhead City 05:44:33 -53.1 Dark Down 49.3 207.3 Up 05:29:33 - 05:59:33 1103

Reno 05:45:07 -47.4 Dark Down 46.9 198.1 Up 05:30:07 - 06:00:07 1101

Yerington 05:45:02 -48.1 Dark Down 47.2 199.2 Up 05:30:02 - 06:00:02 1101

Hawthorne 05:44:58 -48.7 Dark Down 47.5 200.1 Up 05:29:58 - 05:59:58 1100

Beatty 05:44:48 -50.8 Dark Down 48.5 203.4 Up 05:29:48 - 05:59:48 1097

Portola 05:45:10 -46.9 Dark Down 46.8 197.1 Up 05:30:10 - 06:00:10 1084

Gimple 05:45:12 -46.4 Dark Down 46.5 196.5 Up 05:30:12 - 06:00:12 1084

Carson City 05:45:05 -47.6 Dark Down 47.2 198.3 Up 05:30:05 - 06:00:05 1081

Greenville 05:45:12 -46.4 Dark Down 46.6 196.4 Up 05:30:12 - 06:00:12 1080

Lake Havasu City 05:44:30 -53.6 Dark Down 49.8 208.0 Up 05:29:30 - 05:59:30 1076

Gardnerville 05:45:04 -47.7 Dark Down 47.4 198.4 Up 05:30:04 - 06:00:04 1069

Quincy 05:45:11 -46.5 Dark Down 46.7 196.4 Up 05:30:11 - 06:00:11 1068

Bishop 05:44:54 -49.4 Dark Down 48.6 200.9 Up 05:29:54 - 05:59:54 1043

Lee Vining 05:44:58 -48.6 Dark Down 48.2 199.6 Up 05:29:58 - 05:59:58 1042

Yuma 05:44:25 -54.3 Dark Down 51.6 208.6 Up 05:29:25 - 05:59:25 948

Idyllwild 05:44:47 -52.3 Dark Down 51.4 205.0 Up 05:29:47 - 05:59:47 929

Calipatria 05:44:30 -53.4 Dark Down 51.5 207.0 Up 05:29:30 - 05:59:30 928

Wildwood 05:44:47 -50.7 Dark Down 51.7 202.0 Up 05:29:47 - 05:59:47 830

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 547893, (2029/02/16 05:44UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.0 -16:43:25 -1.5 14.65 105
Saiph          05:47:45.4 -09:40:11  2.1 15.62  91
PPM 176439     06:48:19.0 -01:19:08  5.6  1.60 105
PPM 176376     06:41:23.4 -02:21:03  8.3  0.42 104
PPM 176393     06:43:00.4 -02:06:00  8.7  0.08 104
547893         06:42:42.1 -02:05:15 16.0       104
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:31:11 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	05:45:05	-46.0	Dark	Down	31.5	211.1	Up	05:30:05 - 06:00:05	2253
Dunrhomin	05:44:20	-55.6	Dark	Down	41.1	216.7	Up	05:29:20 - 05:59:20	1825
Nikitin	05:44:19	-55.8	Dark	Down	41.3	216.7	Up	05:29:19 - 05:59:19	1816
CU-SBO	05:44:19	-55.8	Dark	Down	41.4	216.7	Up	05:29:19 - 05:59:19	1809
Kelowna	05:45:35	-41.9	Dark	Down	36.9	196.0	Up	05:30:35 - 06:00:35	1648
Kamloops	05:45:40	-41.0	Dark	Down	36.3	194.8	Up	05:30:40 - 06:00:40	1647
Peachland	05:45:36	-41.8	Dark	Down	37.1	195.7	Up	05:30:36 - 06:00:36	1630
Penticton	05:45:36	-42.1	Dark	Down	37.2	196.0	Up	05:30:36 - 06:00:36	1629
Summerland	05:45:36	-42.0	Dark	Down	37.2	195.8	Up	05:30:36 - 06:00:36	1627
Anarchist Mountain Observatory	05:45:32	-42.5	Dark	Down	37.7	196.3	Up	05:30:32 - 06:00:32	1614
Oliver	05:45:33	-42.3	Dark	Down	37.6	196.0	Up	05:30:33 - 06:00:33	1613
Okanogan	05:45:32	-42.7	Dark	Down	38.4	196.2	Up	05:30:32 - 06:00:32	1575
Brewster	05:45:32	-42.8	Dark	Down	38.7	196.0	Up	05:30:32 - 06:00:32	1553
Manson/Chelan	05:45:32	-42.7	Dark	Down	38.9	195.6	Up	05:30:32 - 06:00:32	1527
Wenatchee	05:45:31	-42.9	Dark	Down	39.4	195.4	Up	05:30:31 - 06:00:31	1497
PNWRO	05:45:23	-44.5	Dark	Down	40.5	197.6	Up	05:30:23 - 06:00:23	1491
Ellensburg	05:45:32	-43.0	Dark	Down	39.9	195.3	Up	05:30:32 - 06:00:32	1467
Yakima	05:45:29	-43.3	Dark	Down	40.3	195.3	Up	05:30:29 - 06:00:29	1446
Toppenish/White Swan	05:45:28	-43.5	Dark	Down	40.4	195.6	Up	05:30:28 - 06:00:28	1443
Victoria	05:45:44	-40.6	Dark	Down	38.8	191.4	Up	05:30:44 - 06:00:44	1418
The Dalles	05:45:28	-43.4	Dark	Down	41.3	194.7	Up	05:30:28 - 06:00:28	1368
Maupin	05:45:27	-43.7	Dark	Down	41.7	195.0	Up	05:30:27 - 06:00:27	1351
Sisters	05:45:27	-43.9	Dark	Down	42.7	194.5	Up	05:30:27 - 06:00:27	1283
Bend	05:45:25	-44.2	Dark	Down	42.8	194.9	Up	05:30:25 - 06:00:25	1282
Oregon Observatory	05:45:25	-44.2	Dark	Down	43.0	194.8	Up	05:30:25 - 06:00:25	1267
Cedarville	05:45:14	-46.2	Dark	Down	45.0	197.1	Up	05:30:14 - 06:00:14	1197
Chiloquin	05:45:22	-44.6	Dark	Down	44.4	194.5	Up	05:30:22 - 06:00:22	1175
Klamath Falls	05:45:21	-44.8	Dark	Down	44.7	194.7	Up	05:30:21 - 06:00:21	1159
Patrick	05:44:31	-53.5	Dark	Down	48.9	208.2	Up	05:29:31 - 05:59:31	1154
George/Scottsdale	05:44:18	-55.7	Dark	Down	49.5	211.9	Up	05:29:18 - 05:59:18	1154
Fall River/Burney	05:45:16	-45.7	Dark	Down	45.8	195.5	Up	05:30:16 - 06:00:16	1110
Laughlin/Bullhead City	05:44:33	-53.1	Dark	Down	49.3	207.3	Up	05:29:33 - 05:59:33	1103
Reno	05:45:07	-47.4	Dark	Down	46.9	198.1	Up	05:30:07 - 06:00:07	1101
Yerington	05:45:02	-48.1	Dark	Down	47.2	199.2	Up	05:30:02 - 06:00:02	1101
Hawthorne	05:44:58	-48.7	Dark	Down	47.5	200.1	Up	05:29:58 - 05:59:58	1100
Beatty	05:44:48	-50.8	Dark	Down	48.5	203.4	Up	05:29:48 - 05:59:48	1097
Portola	05:45:10	-46.9	Dark	Down	46.8	197.1	Up	05:30:10 - 06:00:10	1084
Gimple	05:45:12	-46.4	Dark	Down	46.5	196.5	Up	05:30:12 - 06:00:12	1084
Carson City	05:45:05	-47.6	Dark	Down	47.2	198.3	Up	05:30:05 - 06:00:05	1081
Greenville	05:45:12	-46.4	Dark	Down	46.6	196.4	Up	05:30:12 - 06:00:12	1080
Lake Havasu City	05:44:30	-53.6	Dark	Down	49.8	208.0	Up	05:29:30 - 05:59:30	1076
Gardnerville	05:45:04	-47.7	Dark	Down	47.4	198.4	Up	05:30:04 - 06:00:04	1069
Quincy	05:45:11	-46.5	Dark	Down	46.7	196.4	Up	05:30:11 - 06:00:11	1068
Bishop	05:44:54	-49.4	Dark	Down	48.6	200.9	Up	05:29:54 - 05:59:54	1043
Lee Vining	05:44:58	-48.6	Dark	Down	48.2	199.6	Up	05:29:58 - 05:59:58	1042
Yuma	05:44:25	-54.3	Dark	Down	51.6	208.6	Up	05:29:25 - 05:59:25	948
Idyllwild	05:44:47	-52.3	Dark	Down	51.4	205.0	Up	05:29:47 - 05:59:47	929
Calipatria	05:44:30	-53.4	Dark	Down	51.5	207.0	Up	05:29:30 - 05:59:30	928
Wildwood	05:44:47	-50.7	Dark	Down	51.7	202.0	Up	05:29:47 - 05:59:47	830