RECON: TNO occultation with 547893

Event between (547893) 10WN75 and star GA0860:01687808 with event index number of 2724589

Geocentric closest approach at 2029/02/16 05:43:49 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=15.9, 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 193 seconds.
The 1-sigma cross-track error in the shadow position is 3398 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 15.9       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 4.7 sigma about the mid-time.
The median site spacing is 13.5 km RECON observability=1.0 and success probability=12.2%

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

Sleaford 05:45:17 -46.0 Dark Down 31.5 211.2 Up 05:30:17 - 06:00:17 2002

Dunrhomin 05:44:30 -55.7 Dark Down 41.1 216.7 Up 05:29:30 - 05:59:30 1575

Nikitin 05:44:30 -55.8 Dark Down 41.2 216.8 Up 05:29:30 - 05:59:30 1565

CU-SBO 05:44:30 -55.8 Dark Down 41.3 216.7 Up 05:29:30 - 05:59:30 1558

Kelowna 05:45:47 -41.9 Dark Down 36.9 196.1 Up 05:30:47 - 06:00:47 1397

Kamloops 05:45:52 -41.0 Dark Down 36.3 194.9 Up 05:30:52 - 06:00:52 1396

Peachland 05:45:48 -41.8 Dark Down 37.1 195.7 Up 05:30:48 - 06:00:48 1379

Penticton 05:45:46 -42.1 Dark Down 37.2 196.0 Up 05:30:46 - 06:00:46 1378

Summerland 05:45:46 -42.0 Dark Down 37.2 195.9 Up 05:30:46 - 06:00:46 1377

Anarchist Mountain Observatory 05:45:45 -42.5 Dark Down 37.7 196.4 Up 05:30:45 - 06:00:45 1363

Oliver 05:45:45 -42.3 Dark Down 37.6 196.1 Up 05:30:45 - 06:00:45 1362

Okanogan 05:45:43 -42.8 Dark Down 38.4 196.2 Up 05:30:43 - 06:00:43 1324

Brewster 05:45:42 -42.8 Dark Down 38.7 196.0 Up 05:30:42 - 06:00:42 1302

Manson/Chelan 05:45:43 -42.8 Dark Down 38.9 195.6 Up 05:30:43 - 06:00:43 1277

Wenatchee 05:45:42 -42.9 Dark Down 39.4 195.5 Up 05:30:42 - 06:00:42 1246

PNWRO 05:45:33 -44.5 Dark Down 40.5 197.6 Up 05:30:33 - 06:00:33 1241

Ellensburg 05:45:41 -43.1 Dark Down 39.8 195.3 Up 05:30:41 - 06:00:41 1217

Yakima 05:45:41 -43.3 Dark Down 40.2 195.4 Up 05:30:41 - 06:00:41 1196

Toppenish/White Swan 05:45:40 -43.5 Dark Down 40.4 195.6 Up 05:30:40 - 06:00:40 1192

Victoria 05:45:55 -40.6 Dark Down 38.8 191.4 Up 05:30:55 - 06:00:55 1167

The Dalles 05:45:39 -43.5 Dark Down 41.3 194.8 Up 05:30:39 - 06:00:39 1117

Maupin 05:45:38 -43.8 Dark Down 41.7 195.0 Up 05:30:38 - 06:00:38 1101

Sisters 05:45:37 -43.9 Dark Down 42.6 194.6 Up 05:30:37 - 06:00:37 1032

Bend 05:45:36 -44.2 Dark Down 42.8 195.0 Up 05:30:36 - 06:00:36 1031

Oregon Observatory 05:45:35 -44.2 Dark Down 43.0 194.8 Up 05:30:35 - 06:00:35 1016

Cedarville 05:45:25 -46.2 Dark Down 45.0 197.1 Up 05:30:25 - 06:00:25 947

Chiloquin 05:45:34 -44.6 Dark Down 44.4 194.6 Up 05:30:34 - 06:00:34 924

Klamath Falls 05:45:32 -44.9 Dark Down 44.7 194.7 Up 05:30:32 - 06:00:32 909

Patrick 05:44:43 -53.5 Dark Down 48.8 208.2 Up 05:29:43 - 05:59:43 904

George/Scottsdale 05:44:29 -55.8 Dark Down 49.5 211.9 Up 05:29:29 - 05:59:29 904

Fall River/Burney 05:45:28 -45.7 Dark Down 45.8 195.6 Up 05:30:28 - 06:00:28 860

Laughlin/Bullhead City 05:44:44 -53.2 Dark Down 49.3 207.4 Up 05:29:44 - 05:59:44 853

Yerington 05:45:13 -48.1 Dark Down 47.2 199.3 Up 05:30:13 - 06:00:13 850

Reno 05:45:17 -47.4 Dark Down 46.9 198.2 Up 05:30:17 - 06:00:17 850

Hawthorne 05:45:10 -48.7 Dark Down 47.5 200.2 Up 05:30:10 - 06:00:10 850

Beatty 05:44:58 -50.8 Dark Down 48.5 203.5 Up 05:29:58 - 05:59:58 847

Portola 05:45:20 -46.9 Dark Down 46.8 197.2 Up 05:30:20 - 06:00:20 834

Gimple 05:45:23 -46.5 Dark Down 46.5 196.5 Up 05:30:23 - 06:00:23 834

Carson City 05:45:16 -47.6 Dark Down 47.2 198.3 Up 05:30:16 - 06:00:16 831

Greenville 05:45:23 -46.4 Dark Down 46.5 196.4 Up 05:30:23 - 06:00:23 829

Lake Havasu City 05:44:41 -53.7 Dark Down 49.8 208.1 Up 05:29:41 - 05:59:41 825

Gardnerville 05:45:16 -47.8 Dark Down 47.4 198.5 Up 05:30:16 - 06:00:16 819

Quincy 05:45:22 -46.5 Dark Down 46.7 196.5 Up 05:30:22 - 06:00:22 818

Bishop 05:45:06 -49.5 Dark Down 48.6 201.0 Up 05:30:06 - 06:00:06 792

Lee Vining 05:45:10 -48.7 Dark Down 48.2 199.7 Up 05:30:10 - 06:00:10 792

Yuma 05:44:36 -54.3 Dark Down 51.5 208.6 Up 05:29:36 - 05:59:36 697

Calipatria 05:44:41 -53.4 Dark Down 51.5 207.1 Up 05:29:41 - 05:59:41 678

Idyllwild 05:44:47 -52.3 Dark Down 51.4 205.0 Up 05:29:47 - 05:59:47 656

Wildwood 05:44:58 -50.8 Dark Down 51.7 202.0 Up 05:29:58 - 05:59:58 581

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 15.9       104
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:31:13 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	05:45:17	-46.0	Dark	Down	31.5	211.2	Up	05:30:17 - 06:00:17	2002
Dunrhomin	05:44:30	-55.7	Dark	Down	41.1	216.7	Up	05:29:30 - 05:59:30	1575
Nikitin	05:44:30	-55.8	Dark	Down	41.2	216.8	Up	05:29:30 - 05:59:30	1565
CU-SBO	05:44:30	-55.8	Dark	Down	41.3	216.7	Up	05:29:30 - 05:59:30	1558
Kelowna	05:45:47	-41.9	Dark	Down	36.9	196.1	Up	05:30:47 - 06:00:47	1397
Kamloops	05:45:52	-41.0	Dark	Down	36.3	194.9	Up	05:30:52 - 06:00:52	1396
Peachland	05:45:48	-41.8	Dark	Down	37.1	195.7	Up	05:30:48 - 06:00:48	1379
Penticton	05:45:46	-42.1	Dark	Down	37.2	196.0	Up	05:30:46 - 06:00:46	1378
Summerland	05:45:46	-42.0	Dark	Down	37.2	195.9	Up	05:30:46 - 06:00:46	1377
Anarchist Mountain Observatory	05:45:45	-42.5	Dark	Down	37.7	196.4	Up	05:30:45 - 06:00:45	1363
Oliver	05:45:45	-42.3	Dark	Down	37.6	196.1	Up	05:30:45 - 06:00:45	1362
Okanogan	05:45:43	-42.8	Dark	Down	38.4	196.2	Up	05:30:43 - 06:00:43	1324
Brewster	05:45:42	-42.8	Dark	Down	38.7	196.0	Up	05:30:42 - 06:00:42	1302
Manson/Chelan	05:45:43	-42.8	Dark	Down	38.9	195.6	Up	05:30:43 - 06:00:43	1277
Wenatchee	05:45:42	-42.9	Dark	Down	39.4	195.5	Up	05:30:42 - 06:00:42	1246
PNWRO	05:45:33	-44.5	Dark	Down	40.5	197.6	Up	05:30:33 - 06:00:33	1241
Ellensburg	05:45:41	-43.1	Dark	Down	39.8	195.3	Up	05:30:41 - 06:00:41	1217
Yakima	05:45:41	-43.3	Dark	Down	40.2	195.4	Up	05:30:41 - 06:00:41	1196
Toppenish/White Swan	05:45:40	-43.5	Dark	Down	40.4	195.6	Up	05:30:40 - 06:00:40	1192
Victoria	05:45:55	-40.6	Dark	Down	38.8	191.4	Up	05:30:55 - 06:00:55	1167
The Dalles	05:45:39	-43.5	Dark	Down	41.3	194.8	Up	05:30:39 - 06:00:39	1117
Maupin	05:45:38	-43.8	Dark	Down	41.7	195.0	Up	05:30:38 - 06:00:38	1101
Sisters	05:45:37	-43.9	Dark	Down	42.6	194.6	Up	05:30:37 - 06:00:37	1032
Bend	05:45:36	-44.2	Dark	Down	42.8	195.0	Up	05:30:36 - 06:00:36	1031
Oregon Observatory	05:45:35	-44.2	Dark	Down	43.0	194.8	Up	05:30:35 - 06:00:35	1016
Cedarville	05:45:25	-46.2	Dark	Down	45.0	197.1	Up	05:30:25 - 06:00:25	947
Chiloquin	05:45:34	-44.6	Dark	Down	44.4	194.6	Up	05:30:34 - 06:00:34	924
Klamath Falls	05:45:32	-44.9	Dark	Down	44.7	194.7	Up	05:30:32 - 06:00:32	909
Patrick	05:44:43	-53.5	Dark	Down	48.8	208.2	Up	05:29:43 - 05:59:43	904
George/Scottsdale	05:44:29	-55.8	Dark	Down	49.5	211.9	Up	05:29:29 - 05:59:29	904
Fall River/Burney	05:45:28	-45.7	Dark	Down	45.8	195.6	Up	05:30:28 - 06:00:28	860
Laughlin/Bullhead City	05:44:44	-53.2	Dark	Down	49.3	207.4	Up	05:29:44 - 05:59:44	853
Yerington	05:45:13	-48.1	Dark	Down	47.2	199.3	Up	05:30:13 - 06:00:13	850
Reno	05:45:17	-47.4	Dark	Down	46.9	198.2	Up	05:30:17 - 06:00:17	850
Hawthorne	05:45:10	-48.7	Dark	Down	47.5	200.2	Up	05:30:10 - 06:00:10	850
Beatty	05:44:58	-50.8	Dark	Down	48.5	203.5	Up	05:29:58 - 05:59:58	847
Portola	05:45:20	-46.9	Dark	Down	46.8	197.2	Up	05:30:20 - 06:00:20	834
Gimple	05:45:23	-46.5	Dark	Down	46.5	196.5	Up	05:30:23 - 06:00:23	834
Carson City	05:45:16	-47.6	Dark	Down	47.2	198.3	Up	05:30:16 - 06:00:16	831
Greenville	05:45:23	-46.4	Dark	Down	46.5	196.4	Up	05:30:23 - 06:00:23	829
Lake Havasu City	05:44:41	-53.7	Dark	Down	49.8	208.1	Up	05:29:41 - 05:59:41	825
Gardnerville	05:45:16	-47.8	Dark	Down	47.4	198.5	Up	05:30:16 - 06:00:16	819
Quincy	05:45:22	-46.5	Dark	Down	46.7	196.5	Up	05:30:22 - 06:00:22	818
Bishop	05:45:06	-49.5	Dark	Down	48.6	201.0	Up	05:30:06 - 06:00:06	792
Lee Vining	05:45:10	-48.7	Dark	Down	48.2	199.7	Up	05:30:10 - 06:00:10	792
Yuma	05:44:36	-54.3	Dark	Down	51.5	208.6	Up	05:29:36 - 05:59:36	697
Calipatria	05:44:41	-53.4	Dark	Down	51.5	207.1	Up	05:29:41 - 05:59:41	678
Idyllwild	05:44:47	-52.3	Dark	Down	51.4	205.0	Up	05:29:47 - 05:59:47	656
Wildwood	05:44:58	-50.8	Dark	Down	51.7	202.0	Up	05:29:58 - 05:59:58	581