RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1120:10572564 with event index number of 2205154

Geocentric closest approach at 2026/11/12 02:02:49 UTC

J2000 position of star is 19:41:24.5 +22:32:41
Equinox of date position of star is 19:42:26.7 +22:36:10
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 61 degrees from the moon. Moon is 7% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 16.2 AU from the Sun and 16.4 AU from the Earth.
Apparent velocity is 26.0 km/sec on the sky relative to the star, or, 7.9 arcsec/hr.
The 1-sigma error in the time of the event is 72 seconds.
The 1-sigma cross-track error in the shadow position is 1186 km.
The sky-plane scale is 11866.9 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=82.8 km assuming a 5% albedo -- 3.0 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2026/11/12 02:06UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:50.8 +38:48:35  0.0 21.28  69
Tarazed        19:47:32.2 +10:40:50  2.7 11.99  52
PPM 109585     19:44:34.2 +22:33:37  6.4  0.47  61
PPM 109507     19:42:23.8 +22:31:01  8.0  0.10  61
342842         19:42:33.6 +22:36:33 14.8        61
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 7.1 km RECON observability=0.6 and success probability=1.7%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Dunrhomin	02:02:29	-26.0	Dark	Down	51.0	255.7	Up	01:55:57 - 02:09:01	3986
Nikitin	02:02:30	-26.0	Dark	Down	51.0	255.9	Up	01:55:58 - 02:09:02	3984
CU-SBO	02:02:30	-25.9	Dark	Down	51.1	255.9	Up	01:55:58 - 02:09:02	3978
Sleaford	02:01:40	-25.1	Dark	Down	47.3	241.9	Up	01:55:08 - 02:08:12	3949
George/Scottsdale	02:02:53	-20.2	Dark	Down	57.6	259.0	Up	01:56:21 - 02:09:25	3415
Patrick	02:02:44	-18.7	Dark	Down	58.8	254.5	Up	01:56:12 - 02:09:16	3296
Lake Havasu City	02:02:48	-18.2	Dark	Up	59.4	255.6	Up	01:56:16 - 02:09:20	3241
Laughlin/Bullhead City	02:02:45	-18.1	Dark	Up	59.5	254.3	Up	01:56:13 - 02:09:17	3236
Yuma	02:02:55	-17.7	AT	Up	60.0	258.4	Up	01:56:23 - 02:09:27	3175
Kelowna	02:01:41	-16.5	AT	Down	55.5	227.4	Up	01:55:09 - 02:08:13	3151
Anarchist Mountain Observatory	02:01:44	-16.5	AT	Down	56.0	228.5	Up	01:55:12 - 02:08:16	3146
Penticton	02:01:42	-16.4	AT	Down	55.8	227.7	Up	01:55:10 - 02:08:14	3140
Oliver	02:01:43	-16.4	AT	Down	56.0	228.0	Up	01:55:11 - 02:08:15	3135
Summerland	02:01:43	-16.4	AT	Down	55.8	227.4	Up	01:55:11 - 02:08:15	3135
Peachland	02:01:41	-16.3	AT	Down	55.7	227.1	Up	01:55:09 - 02:08:13	3131
PNWRO	02:01:56	-16.4	AT	Down	57.7	232.8	Up	01:55:24 - 02:08:28	3130
Okanogan	02:01:47	-16.3	AT	Down	56.6	228.9	Up	01:55:15 - 02:08:19	3122
Calipatria	02:02:52	-17.0	AT	Up	60.7	256.9	Up	01:56:20 - 02:09:24	3115
Beatty	02:02:36	-16.6	AT	Up	60.6	249.1	Up	01:56:04 - 02:09:08	3108
Kamloops	02:01:38	-16.1	AT	Down	55.4	225.3	Up	01:55:06 - 02:08:10	3106
Brewster	02:01:47	-16.1	AT	Down	56.9	229.0	Up	01:55:15 - 02:08:19	3104
Manson/Chelan	02:01:48	-15.8	AT	Down	57.2	228.7	Up	01:55:16 - 02:08:20	3077
Wenatchee	02:01:50	-15.6	AT	Down	57.6	229.0	Up	01:55:18 - 02:08:22	3059
Idyllwild	02:02:48	-16.2	AT	Up	61.5	254.7	Up	01:56:16 - 02:09:20	3037
Ellensburg	02:01:51	-15.4	AT	Down	57.9	229.2	Up	01:55:19 - 02:08:23	3037
Toppenish/White Swan	02:01:54	-15.4	AT	Down	58.3	230.2	Up	01:55:22 - 02:08:26	3036
Yakima	02:01:53	-15.3	AT	Down	58.2	229.7	Up	01:55:21 - 02:08:25	3028
Hawthorne	02:02:26	-15.4	AT	Up	61.4	244.2	Up	01:55:54 - 02:08:58	3003
Bishop	02:02:32	-15.4	AT	Up	61.7	246.5	Up	01:56:00 - 02:09:04	2994
Yerington	02:02:25	-15.1	AT	Up	61.5	242.7	Up	01:55:53 - 02:08:57	2974
The Dalles	02:01:56	-14.8	AT	Down	59.2	230.1	Up	01:55:24 - 02:08:28	2968
Maupin	02:01:58	-14.8	AT	Down	59.4	230.8	Up	01:55:26 - 02:08:30	2967
Cedarville	02:02:14	-14.8	AT	Up	61.0	237.3	Up	01:55:42 - 02:08:46	2956
Lee Vining	02:02:29	-15.0	AT	Up	61.9	244.5	Up	01:55:57 - 02:09:01	2953
Reno	02:02:22	-14.7	AT	Up	61.7	241.0	Up	01:55:50 - 02:08:54	2938
Carson City	02:02:23	-14.7	AT	Up	61.9	241.6	Up	01:55:51 - 02:08:55	2931
Gardnerville	02:02:25	-14.7	AT	Up	62.0	242.1	Up	01:55:53 - 02:08:57	2929
Bend	02:02:02	-14.4	AT	Down	60.2	231.9	Up	01:55:30 - 02:08:34	2928
Oregon Observatory	02:02:03	-14.3	AT	Down	60.4	232.0	Up	01:55:31 - 02:08:35	2916
Sisters	02:02:01	-14.3	AT	Down	60.2	231.2	Up	01:55:29 - 02:08:33	2915
Wildwood	02:02:45	-14.7	AT	Up	62.9	252.1	Up	01:56:13 - 02:09:17	2896
Portola	02:02:20	-14.3	AT	Up	62.0	239.6	Up	01:55:48 - 02:08:52	2895
Victoria	02:01:43	-13.8	AT	Down	58.3	223.1	Up	01:55:11 - 02:08:15	2877
Gimple	02:02:18	-14.0	AT	Up	62.1	238.6	Up	01:55:46 - 02:08:50	2873
Greenville	02:02:18	-14.0	AT	Up	62.2	238.4	Up	01:55:46 - 02:08:50	2867
Quincy	02:02:19	-13.9	AT	Up	62.3	238.8	Up	01:55:47 - 02:08:51	2863
Chiloquin	02:02:08	-13.7	AT	Up	61.4	233.3	Up	01:55:36 - 02:08:40	2857
Fall River/Burney	02:02:15	-13.8	AT	Up	62.0	236.3	Up	01:55:43 - 02:08:47	2856
Klamath Falls	02:02:09	-13.7	AT	Up	61.6	233.9	Up	01:55:37 - 02:08:41	2855

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, (2026/11/12 02:06UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 21.28  69
Tarazed        19:46:15.6 +10:36:48  2.7 11.99  52
PPM 109585     19:43:25.0 +22:29:41  6.4  0.47  61
PPM 109507     19:41:14.6 +22:27:09  8.0  0.10  61
342842         19:41:24.5 +22:32:41 14.8        61
Positions are for J2000

Event circumstances last updated at 2024/03/05 04:52:24 UT

RECON