RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1260:08364356 with event index number of 2203101

Geocentric closest approach at 2024/07/10 04:28:34 UTC

J2000 position of star is 20:03:21.6 +37:23:42
Equinox of date position of star is 20:04:14.7 +37:27:51
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon. Moon is 17% 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 29.3 km/sec on the sky relative to the star, or, 9.8 arcsec/hr.
The 1-sigma error in the time of the event is 20 seconds.
The 1-sigma cross-track error in the shadow position is 1418 km.
The sky-plane scale is 10804.1 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=82.8 km assuming a 5% albedo -- 2.6 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2024/07/10 04:29UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:16.1 +45:22:08  1.3 10.63 117
37Gam Cyg      20:23:06.6 +40:20:11  2.2  4.66 119
25 Cyg         20:00:49.1 +37:06:40  5.0  0.77 119
PPM 084125     20:05:00.7 +37:15:09  8.1  0.26 119
PPM 084123     20:05:00.2 +37:32:13  9.1  0.16 119
342842         20:04:15.5 +37:27:55 16.4       119
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 17.7 km RECON observability=0.2 and success probability=5.4%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	04:30:10	-3.0	CT	Up	43.0	80.1	Up	04:28:01 - 04:32:19	921
Peachland	04:30:10	-3.9	CT	Up	43.2	79.6	Up	04:28:01 - 04:32:19	872
Summerland	04:30:10	-4.0	CT	Up	43.3	79.6	Up	04:28:01 - 04:32:19	865
Brewster	04:30:10	-4.9	CT	Up	42.9	78.1	Up	04:28:01 - 04:32:19	864
Kelowna	04:30:10	-3.9	CT	Up	43.4	79.9	Up	04:28:01 - 04:32:19	858
Penticton	04:30:10	-4.1	CT	Up	43.3	79.6	Up	04:28:01 - 04:32:19	858
Oliver	04:30:10	-4.3	CT	Up	43.2	79.3	Up	04:28:01 - 04:32:19	854
Okanogan	04:30:10	-4.9	CT	Up	43.1	78.5	Up	04:28:01 - 04:32:19	853
Victoria	04:30:31	-2.9	CT	Up	40.7	76.3	Up	04:28:22 - 04:32:40	845
Anarchist Mountain Observatory	04:30:10	-4.5	CT	Up	43.3	79.2	Up	04:28:01 - 04:32:19	843
Manson/Chelan	04:30:31	-4.9	CT	Up	42.7	77.7	Up	04:28:22 - 04:32:40	655
Wenatchee	04:30:32	-5.2	CT	Up	42.4	77.2	Up	04:28:23 - 04:32:41	630
Ellensburg	04:30:33	-5.3	CT	Up	42.2	76.7	Up	04:28:24 - 04:32:42	612
Yakima	04:30:35	-5.6	CT	Up	42.1	76.4	Up	04:28:26 - 04:32:44	585
Toppenish/White Swan	04:30:35	-5.8	CT	Up	42.2	76.3	Up	04:28:26 - 04:32:44	562
The Dalles	04:30:38	-5.9	CT	Up	41.5	75.2	Up	04:28:29 - 04:32:47	545
Maupin	04:30:39	-6.2	NT	Up	41.4	74.9	Up	04:28:30 - 04:32:48	511
Sisters	04:30:42	-6.6	NT	Up	40.9	73.9	Up	04:28:33 - 04:32:51	474
PNWRO	04:30:35	-6.8	NT	Up	43.1	76.8	Up	04:28:26 - 04:32:44	466
Bend	04:30:43	-6.9	NT	Up	41.0	73.8	Up	04:28:34 - 04:32:52	444
Oregon Observatory	04:30:43	-6.9	NT	Up	40.8	73.6	Up	04:28:34 - 04:32:52	438
Chiloquin	04:30:47	-7.5	NT	Up	40.2	72.3	Up	04:28:38 - 04:32:56	365
Sleaford	04:30:03	-8.0	NT	Up	52.1	92.3	Up	04:27:54 - 04:32:12	358
Klamath Falls	04:30:48	-7.8	NT	Up	40.1	72.1	Up	04:28:39 - 04:32:57	336
Fall River/Burney	04:30:51	-8.8	NT	Up	40.0	71.3	Up	04:28:42 - 04:33:00	231
Cedarville	04:30:48	-9.1	NT	Up	41.0	72.3	Up	04:28:39 - 04:32:57	204
Greenville	04:30:53	-9.6	NT	Up	40.1	70.8	Up	04:28:44 - 04:33:02	141
Gimple	04:30:53	-9.7	NT	Up	40.1	70.8	Up	04:28:44 - 04:33:02	136
Quincy	04:30:53	-9.7	NT	Up	40.0	70.6	Up	04:28:44 - 04:33:02	125
Portola	04:30:53	-10.1	NT	Up	40.3	70.7	Up	04:28:44 - 04:33:02	91
Reno	04:30:53	-10.7	NT	Up	40.7	70.8	Up	04:28:44 - 04:33:02	37
Carson City	04:30:54	-10.9	NT	Up	40.6	70.5	Up	04:28:45 - 04:33:03	9
Gardnerville	04:30:55	-11.1	NT	Up	40.5	70.4	Up	04:28:46 - 04:33:04	-12
Yerington	04:30:54	-11.4	NT	Up	41.0	70.6	Up	04:28:45 - 04:33:03	-40
Hawthorne	04:30:55	-12.0	AT	Up	41.2	70.5	Up	04:28:46 - 04:33:04	-103
Lee Vining	04:30:57	-12.1	AT	Up	40.7	69.8	Up	04:28:48 - 04:33:06	-121
Bishop	04:30:57	-12.9	AT	Up	41.0	69.6	Up	04:28:48 - 04:33:06	-207
Beatty	04:30:57	-14.2	AT	Up	42.1	69.8	Up	04:28:48 - 04:33:06	-331
Wildwood	04:31:05	-15.0	AT	Up	39.7	67.0	Up	04:28:56 - 04:33:14	-456
Laughlin/Bullhead City	04:30:58	-16.7	AT	Up	43.1	69.0	Up	04:28:49 - 04:33:07	-590
Idyllwild	04:31:04	-16.4	AT	Up	41.0	67.2	Up	04:28:55 - 04:33:13	-590
Patrick	04:30:56	-16.9	AT	Up	43.7	69.5	Up	04:28:47 - 04:33:05	-608
Dunrhomin	04:30:32	-17.8	AT	Up	51.6	77.7	Up	04:28:23 - 04:32:41	-640
Nikitin	04:30:33	-18.0	AT	Up	51.6	77.5	Up	04:28:24 - 04:32:42	-655
CU-SBO	04:30:33	-18.0	AT	Up	51.5	77.4	Up	04:28:24 - 04:32:42	-657
Lake Havasu City	04:30:59	-17.3	AT	Up	43.1	68.5	Up	04:28:50 - 04:33:08	-659
Calipatria	04:31:04	-17.5	AT	Up	41.6	67.0	Up	04:28:55 - 04:33:13	-707
Yuma	04:31:04	-18.4	Dark	Up	42.2	66.9	Up	04:28:55 - 04:33:13	-793
George/Scottsdale	04:30:57	-19.3	Dark	Up	44.7	68.5	Up	04:28:48 - 04:33:06	-859

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, (2024/07/10 04:29UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 10.63 117
37Gam Cyg      20:22:13.7 +40:15:24  2.2  4.66 119
25 Cyg         19:59:55.1 +37:02:34  5.0  0.77 119
PPM 084125     20:04:06.6 +37:10:55  8.1  0.26 119
PPM 084123     20:04:06.3 +37:27:59  9.1  0.16 119
342842         20:03:21.6 +37:23:42 16.4       119
Positions are for J2000

Event circumstances last updated at 2024/03/02 05:53:25 UT

RECON