RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1260:07371190 with event index number of 2203206

Geocentric closest approach at 2024/08/03 11:05:02 UTC

J2000 position of star is 19:55:27.7 +36:51:27
Equinox of date position of star is 19:56:20.8 +36:55:21
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 118 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 15.4 AU from the Sun and 14.9 AU from the Earth.
Apparent velocity is 32.2 km/sec on the sky relative to the star, or, 10.8 arcsec/hr.
The 1-sigma error in the time of the event is 26 seconds.
The 1-sigma cross-track error in the shadow position is 1316 km.
The sky-plane scale is 10776.6 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=82.8 km assuming a 5% albedo -- 2.4 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR

Star training set for 342842, (2024/08/03 11:06UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:16.3 +45:22:09  1.3 12.06 110
37Gam Cyg      20:23:06.7 +40:20:11  2.2  6.24 115
25 Cyg         20:00:49.3 +37:06:41  5.0  0.91 118
PPM 083859     19:57:29.9 +36:23:12  7.7  0.58 119
PPM 083847     19:57:04.3 +37:00:40  9.6  0.17 118
342842         19:56:21.7 +36:55:26 14.2       118
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 36.0 km RECON observability=0.6 and success probability=20.9%

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

Sleaford 11:02:31 -4.3 CT Up 37.9 283.8 Up 10:59:53 - 11:05:09 -8

Kamloops 11:02:49 -11.9 NT Down 46.5 275.1 Up 11:00:11 - 11:05:27 -445

Kelowna 11:02:47 -12.1 AT Down 45.8 276.6 Up 11:00:09 - 11:05:25 -519

Peachland 11:02:47 -12.3 AT Down 46.0 276.5 Up 11:00:09 - 11:05:25 -536

Summerland 11:02:47 -12.4 AT Down 45.9 276.7 Up 11:00:09 - 11:05:25 -550

Penticton 11:02:46 -12.4 AT Down 45.9 276.8 Up 11:00:08 - 11:05:24 -556

Oliver 11:02:46 -12.7 AT Down 45.8 277.2 Up 11:00:08 - 11:05:24 -594

Anarchist Mountain Observatory 11:02:45 -12.7 AT Down 45.7 277.5 Up 11:00:07 - 11:05:23 -610

Okanogan 11:02:46 -13.3 AT Down 45.7 278.0 Up 11:00:08 - 11:05:24 -683

Brewster 11:02:46 -13.6 AT Down 45.8 278.2 Up 11:00:08 - 11:05:24 -715

Victoria 11:02:52 -14.8 AT Down 48.3 275.3 Up 11:00:14 - 11:05:30 -720

Manson/Chelan 11:02:46 -13.9 AT Down 46.0 278.1 Up 11:00:08 - 11:05:24 -744

Wenatchee 11:02:46 -14.3 AT Down 46.1 278.5 Up 11:00:08 - 11:05:24 -798

Ellensburg 11:02:46 -14.7 AT Down 46.2 278.8 Up 11:00:08 - 11:05:24 -846

Yakima 11:02:46 -15.0 AT Down 46.1 279.2 Up 11:00:08 - 11:05:24 -891

Toppenish/White Swan 11:02:46 -15.1 AT Down 46.0 279.5 Up 11:00:08 - 11:05:24 -912

PNWRO 11:02:43 -14.7 AT Down 44.9 280.8 Up 11:00:05 - 11:05:21 -927

The Dalles 11:02:46 -16.0 AT Down 46.4 279.9 Up 11:00:08 - 11:05:24 -1009

Maupin 11:02:46 -16.3 AT Down 46.2 280.4 Up 11:00:08 - 11:05:24 -1053

Sisters 11:02:47 -17.2 AT Down 46.4 281.0 Up 11:00:09 - 11:05:25 -1156

Bend 11:02:46 -17.2 AT Down 46.2 281.4 Up 11:00:08 - 11:05:24 -1178

Oregon Observatory 11:02:46 -17.4 AT Down 46.2 281.5 Up 11:00:08 - 11:05:24 -1199

Dunrhomin 11:02:18 -10.6 NT Up 33.7 292.3 Up 10:59:40 - 11:04:56 -1201

Nikitin 11:02:18 -10.7 NT Up 33.7 292.4 Up 10:59:40 - 11:04:56 -1221

CU-SBO 11:02:18 -10.8 NT Up 33.7 292.4 Up 10:59:40 - 11:04:56 -1230

Chiloquin 11:02:46 -18.6 Dark Down 46.3 282.6 Up 11:00:08 - 11:05:24 -1349

Klamath Falls 11:02:46 -18.8 Dark Down 46.1 283.0 Up 11:00:08 - 11:05:24 -1385

Cedarville 11:02:43 -18.5 Dark Down 44.8 284.5 Up 11:00:05 - 11:05:21 -1435

Fall River/Burney 11:02:45 -19.5 Dark Down 45.6 284.4 Up 11:00:07 - 11:05:23 -1508

Gimple 11:02:44 -19.9 Dark Down 45.0 285.5 Up 11:00:06 - 11:05:22 -1598

Greenville 11:02:44 -19.9 Dark Down 45.0 285.4 Up 11:00:06 - 11:05:22 -1599

Quincy 11:02:44 -20.0 Dark Down 45.0 285.6 Up 11:00:06 - 11:05:22 -1621

Portola 11:02:43 -19.9 Dark Down 44.6 286.0 Up 11:00:05 - 11:05:21 -1626

Reno 11:02:41 -19.7 Dark Down 44.0 286.5 Up 11:00:03 - 11:05:19 -1644

Carson City 11:02:41 -20.0 Dark Down 43.9 286.8 Up 11:00:03 - 11:05:19 -1682

Yerington 11:02:40 -19.7 Dark Down 43.4 287.3 Up 11:00:02 - 11:05:18 -1692

Gardnerville 11:02:41 -20.1 Dark Down 43.8 287.1 Up 11:00:03 - 11:05:19 -1708

Hawthorne 11:02:39 -19.8 Dark Down 42.8 287.9 Up 11:00:01 - 11:05:17 -1731

Lee Vining 11:02:40 -20.4 Dark Down 43.0 288.2 Up 11:00:02 - 11:05:18 -1802

Bishop 11:02:38 -20.4 Dark Down 42.3 289.0 Up 11:00:00 - 11:05:16 -1852

Beatty 11:02:35 -19.8 Dark Down 40.9 290.0 Up 10:59:57 - 11:05:13 -1867

Patrick 11:02:30 -19.0 Dark Down 38.2 292.1 Up 10:59:52 - 11:05:08 -1957

Laughlin/Bullhead City 11:02:30 -19.6 Dark Down 38.7 292.1 Up 10:59:52 - 11:05:08 -2000

Lake Havasu City 11:02:30 -19.9 Dark Down 38.2 292.7 Up 10:59:52 - 11:05:08 -2065

George/Scottsdale 11:02:26 -18.8 Dark Down 36.1 294.0 Up 10:59:48 - 11:05:04 -2082

Idyllwild 11:02:34 -21.9 Dark Down 39.8 292.5 Up 10:59:56 - 11:05:12 -2203

Wildwood 11:02:38 -22.8 Dark Down 41.3 291.7 Up 11:00:00 - 11:05:16 -2206

Calipatria 11:02:32 -21.5 Dark Down 38.6 293.3 Up 10:59:54 - 11:05:10 -2239

Yuma 11:02:30 -21.2 Dark Down 37.8 293.9 Up 10:59:52 - 11:05:08 -2263

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 342842, (2024/08/03 11:06UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 12.06 110
37Gam Cyg      20:22:13.7 +40:15:24  2.2  6.24 115
25 Cyg         19:59:55.1 +37:02:34  5.0  0.91 118
PPM 083859     19:56:35.4 +36:19:11  7.7  0.58 119
PPM 083847     19:56:10.3 +36:56:40  9.6  0.17 118
342842         19:55:27.7 +36:51:27 14.2       118
Positions are for J2000

Event circumstances last updated at 2024/03/02 05:56:57 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	11:02:31	-4.3	CT	Up	37.9	283.8	Up	10:59:53 - 11:05:09	-8
Kamloops	11:02:49	-11.9	NT	Down	46.5	275.1	Up	11:00:11 - 11:05:27	-445
Kelowna	11:02:47	-12.1	AT	Down	45.8	276.6	Up	11:00:09 - 11:05:25	-519
Peachland	11:02:47	-12.3	AT	Down	46.0	276.5	Up	11:00:09 - 11:05:25	-536
Summerland	11:02:47	-12.4	AT	Down	45.9	276.7	Up	11:00:09 - 11:05:25	-550
Penticton	11:02:46	-12.4	AT	Down	45.9	276.8	Up	11:00:08 - 11:05:24	-556
Oliver	11:02:46	-12.7	AT	Down	45.8	277.2	Up	11:00:08 - 11:05:24	-594
Anarchist Mountain Observatory	11:02:45	-12.7	AT	Down	45.7	277.5	Up	11:00:07 - 11:05:23	-610
Okanogan	11:02:46	-13.3	AT	Down	45.7	278.0	Up	11:00:08 - 11:05:24	-683
Brewster	11:02:46	-13.6	AT	Down	45.8	278.2	Up	11:00:08 - 11:05:24	-715
Victoria	11:02:52	-14.8	AT	Down	48.3	275.3	Up	11:00:14 - 11:05:30	-720
Manson/Chelan	11:02:46	-13.9	AT	Down	46.0	278.1	Up	11:00:08 - 11:05:24	-744
Wenatchee	11:02:46	-14.3	AT	Down	46.1	278.5	Up	11:00:08 - 11:05:24	-798
Ellensburg	11:02:46	-14.7	AT	Down	46.2	278.8	Up	11:00:08 - 11:05:24	-846
Yakima	11:02:46	-15.0	AT	Down	46.1	279.2	Up	11:00:08 - 11:05:24	-891
Toppenish/White Swan	11:02:46	-15.1	AT	Down	46.0	279.5	Up	11:00:08 - 11:05:24	-912
PNWRO	11:02:43	-14.7	AT	Down	44.9	280.8	Up	11:00:05 - 11:05:21	-927
The Dalles	11:02:46	-16.0	AT	Down	46.4	279.9	Up	11:00:08 - 11:05:24	-1009
Maupin	11:02:46	-16.3	AT	Down	46.2	280.4	Up	11:00:08 - 11:05:24	-1053
Sisters	11:02:47	-17.2	AT	Down	46.4	281.0	Up	11:00:09 - 11:05:25	-1156
Bend	11:02:46	-17.2	AT	Down	46.2	281.4	Up	11:00:08 - 11:05:24	-1178
Oregon Observatory	11:02:46	-17.4	AT	Down	46.2	281.5	Up	11:00:08 - 11:05:24	-1199
Dunrhomin	11:02:18	-10.6	NT	Up	33.7	292.3	Up	10:59:40 - 11:04:56	-1201
Nikitin	11:02:18	-10.7	NT	Up	33.7	292.4	Up	10:59:40 - 11:04:56	-1221
CU-SBO	11:02:18	-10.8	NT	Up	33.7	292.4	Up	10:59:40 - 11:04:56	-1230
Chiloquin	11:02:46	-18.6	Dark	Down	46.3	282.6	Up	11:00:08 - 11:05:24	-1349
Klamath Falls	11:02:46	-18.8	Dark	Down	46.1	283.0	Up	11:00:08 - 11:05:24	-1385
Cedarville	11:02:43	-18.5	Dark	Down	44.8	284.5	Up	11:00:05 - 11:05:21	-1435
Fall River/Burney	11:02:45	-19.5	Dark	Down	45.6	284.4	Up	11:00:07 - 11:05:23	-1508
Gimple	11:02:44	-19.9	Dark	Down	45.0	285.5	Up	11:00:06 - 11:05:22	-1598
Greenville	11:02:44	-19.9	Dark	Down	45.0	285.4	Up	11:00:06 - 11:05:22	-1599
Quincy	11:02:44	-20.0	Dark	Down	45.0	285.6	Up	11:00:06 - 11:05:22	-1621
Portola	11:02:43	-19.9	Dark	Down	44.6	286.0	Up	11:00:05 - 11:05:21	-1626
Reno	11:02:41	-19.7	Dark	Down	44.0	286.5	Up	11:00:03 - 11:05:19	-1644
Carson City	11:02:41	-20.0	Dark	Down	43.9	286.8	Up	11:00:03 - 11:05:19	-1682
Yerington	11:02:40	-19.7	Dark	Down	43.4	287.3	Up	11:00:02 - 11:05:18	-1692
Gardnerville	11:02:41	-20.1	Dark	Down	43.8	287.1	Up	11:00:03 - 11:05:19	-1708
Hawthorne	11:02:39	-19.8	Dark	Down	42.8	287.9	Up	11:00:01 - 11:05:17	-1731
Lee Vining	11:02:40	-20.4	Dark	Down	43.0	288.2	Up	11:00:02 - 11:05:18	-1802
Bishop	11:02:38	-20.4	Dark	Down	42.3	289.0	Up	11:00:00 - 11:05:16	-1852
Beatty	11:02:35	-19.8	Dark	Down	40.9	290.0	Up	10:59:57 - 11:05:13	-1867
Patrick	11:02:30	-19.0	Dark	Down	38.2	292.1	Up	10:59:52 - 11:05:08	-1957
Laughlin/Bullhead City	11:02:30	-19.6	Dark	Down	38.7	292.1	Up	10:59:52 - 11:05:08	-2000
Lake Havasu City	11:02:30	-19.9	Dark	Down	38.2	292.7	Up	10:59:52 - 11:05:08	-2065
George/Scottsdale	11:02:26	-18.8	Dark	Down	36.1	294.0	Up	10:59:48 - 11:05:04	-2082
Idyllwild	11:02:34	-21.9	Dark	Down	39.8	292.5	Up	10:59:56 - 11:05:12	-2203
Wildwood	11:02:38	-22.8	Dark	Down	41.3	291.7	Up	11:00:00 - 11:05:16	-2206
Calipatria	11:02:32	-21.5	Dark	Down	38.6	293.3	Up	10:59:54 - 11:05:10	-2239
Yuma	11:02:30	-21.2	Dark	Down	37.8	293.9	Up	10:59:52 - 11:05:08	-2263