RECON: TNO occultation with 307261

Event between (307261) 02MS4 and star GA0840:14766726 with event index number of 2184683

Geocentric closest approach at 2023/08/24 03:15:16 UTC

J2000 position of star is 18:59:35.4 -05:39:27
Equinox of date position of star is 19:00:48.6 -05:37:28
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 51 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=20.3

[RECON map]
TNO is 46.2 AU from the Sun and 45.6 AU from the Earth.
The TNO is moving 17.5 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 221 seconds.
The 1-sigma cross-track error in the shadow position is 1952 km.
The sky-plane scale is 33041.5 km/arcsec.

The TNO has an absolute magnitude Hv=3.6
Diameter=1066.6 km assuming a 5% albedo -- 65.1 sec chord
Diameter=435.5 km assuming a 30% albedo -- 26.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 307261, (2023/08/24 03:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.7 -26:28:57  0.9 41.37  13
Tarazed        19:47:23.0 +10:40:21  2.7 19.99  69
12 Aql         19:02:56.6 -05:42:15  3.9  0.53  52
PPM 202437     19:02:43.3 -06:09:27  7.9  0.71  52
PPM 202410     19:01:35.2 -05:41:05  9.2  0.19  52
307261         19:00:51.1 -05:37:24 16.9        52
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 4.1 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	03:14:34	-2.2	CT	Up	29.9	151.6	Low	02:59:34 - 03:29:34	-2156
Victoria	03:14:52	-1.1	CT	Up	30.7	147.7	Up	02:59:52 - 03:29:52	-2172
Peachland	03:14:35	-2.9	CT	Up	30.8	152.0	Up	02:59:35 - 03:29:35	-2210
Kelowna	03:14:34	-3.0	CT	Up	30.8	152.4	Up	02:59:34 - 03:29:34	-2212
Summerland	03:14:37	-3.0	CT	Up	31.0	152.1	Up	02:59:37 - 03:29:37	-2219
Penticton	03:14:35	-3.1	CT	Up	31.1	152.2	Up	02:59:35 - 03:29:35	-2224
Oliver	03:14:37	-3.2	CT	Up	31.4	152.1	Up	02:59:37 - 03:29:37	-2240
Anarchist Mountain Observatory	03:14:37	-3.4	CT	Up	31.6	152.3	Up	02:59:37 - 03:29:37	-2252
Okanogan	03:14:40	-3.5	CT	Up	32.1	151.9	Up	02:59:40 - 03:29:40	-2276
Manson/Chelan	03:14:43	-3.3	CT	Up	32.4	151.1	Up	02:59:43 - 03:29:43	-2283
Brewster	03:14:41	-3.5	CT	Up	32.3	151.6	Up	02:59:41 - 03:29:41	-2283
Wenatchee	03:14:45	-3.4	CT	Up	32.7	150.8	Up	02:59:45 - 03:29:45	-2301
Ellensburg	03:14:48	-3.4	CT	Up	33.0	150.4	Up	02:59:48 - 03:29:48	-2314
Yakima	03:14:49	-3.5	CT	Up	33.4	150.3	Up	02:59:49 - 03:29:49	-2333
Toppenish/White Swan	03:14:49	-3.7	CT	Up	33.6	150.4	Up	02:59:49 - 03:29:49	-2348
The Dalles	03:14:55	-3.5	CT	Up	34.0	149.2	Up	02:59:55 - 03:29:55	-2365
Maupin	03:14:55	-3.7	CT	Up	34.4	149.2	Up	02:59:55 - 03:29:55	-2389
PNWRO	03:14:45	-4.8	CT	Up	34.4	151.9	Up	02:59:45 - 03:29:45	-2407
Sisters	03:15:01	-3.7	CT	Up	35.0	148.4	Up	03:00:01 - 03:30:01	-2420
Bend	03:15:00	-3.9	CT	Up	35.3	148.6	Up	03:00:00 - 03:30:00	-2439
Oregon Observatory	03:15:01	-3.9	CT	Up	35.4	148.4	Up	03:00:01 - 03:30:01	-2444
Sleaford	03:13:41	-9.5	NT	Up	31.6	168.0	Up	02:58:41 - 03:28:41	-2469
Chiloquin	03:15:07	-4.1	CT	Up	36.4	147.4	Up	03:00:07 - 03:30:07	-2502
Klamath Falls	03:15:08	-4.2	CT	Up	36.7	147.4	Up	03:00:08 - 03:30:08	-2523
Fall River/Burney	03:15:11	-4.9	CT	Up	37.8	147.3	Up	03:00:11 - 03:30:11	-2600
Cedarville	03:15:04	-5.6	CT	Up	37.9	148.9	Up	03:00:04 - 03:30:04	-2608
Greenville	03:15:12	-5.5	CT	Up	38.8	147.5	Up	03:00:12 - 03:30:12	-2665
Gimple	03:15:12	-5.6	CT	Up	38.8	147.6	Up	03:00:12 - 03:30:12	-2667
Quincy	03:15:13	-5.6	CT	Up	39.0	147.4	Up	03:00:13 - 03:30:13	-2677
Portola	03:15:11	-6.0	CT	Up	39.3	147.9	Up	03:00:11 - 03:30:11	-2698
Reno	03:15:10	-6.6	NT	Up	39.8	148.5	Up	03:00:10 - 03:30:10	-2733
Carson City	03:15:10	-6.7	NT	Up	40.1	148.4	Up	03:00:10 - 03:30:10	-2755
Gardnerville	03:15:11	-6.8	NT	Up	40.3	148.4	Up	03:00:11 - 03:30:11	-2771
Yerington	03:15:08	-7.2	NT	Up	40.5	149.1	Up	03:00:08 - 03:30:08	-2786
Hawthorne	03:15:08	-7.8	NT	Up	41.1	149.5	Up	03:00:08 - 03:30:08	-2830
Lee Vining	03:15:12	-7.6	NT	Up	41.4	148.7	Up	03:00:12 - 03:30:12	-2850
Bishop	03:15:11	-8.4	NT	Up	42.2	149.3	Up	03:00:11 - 03:30:11	-2910
Beatty	03:15:05	-9.7	NT	Up	43.2	151.1	Up	03:00:05 - 03:30:05	-2992
Wildwood	03:15:22	-9.4	NT	Up	44.9	147.5	Up	03:00:22 - 03:30:22	-3118
Dunrhomin	03:14:05	-16.2	AT	Up	43.3	167.1	Up	02:59:05 - 03:29:05	-3160
CU-SBO	03:14:06	-16.3	AT	Up	43.5	166.9	Up	02:59:06 - 03:29:06	-3172
Laughlin/Bullhead City	03:15:01	-12.0	AT	Up	45.6	153.1	Up	03:00:01 - 03:30:01	-3179
Patrick	03:14:58	-12.4	AT	Up	45.6	154.1	Up	02:59:58 - 03:29:58	-3186
Idyllwild	03:15:15	-11.0	NT	Up	46.0	149.6	Up	03:00:15 - 03:30:15	-3204
Lake Havasu City	03:15:02	-12.5	AT	Up	46.3	153.1	Up	03:00:02 - 03:30:02	-3234
Calipatria	03:15:12	-12.1	AT	Up	47.0	150.9	Up	03:00:12 - 03:30:12	-3288
Yuma	03:15:09	-13.0	AT	Up	47.8	151.8	Up	03:00:09 - 03:30:09	-3349
George/Scottsdale	03:14:53	-14.6	AT	Up	47.9	156.1	Up	02:59:53 - 03:29:53	-3373

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 307261, (2023/08/24 03:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 41.37  13
Tarazed        19:46:15.6 +10:36:48  2.7 19.99  69
12 Aql         19:01:40.8 -05:44:22  3.9  0.53  52
PPM 202437     19:01:27.3 -06:11:34  7.9  0.71  52
PPM 202410     19:00:19.4 -05:43:09  9.2  0.19  52
307261         18:59:35.4 -05:39:27 16.9        51
Positions are for J2000

Event circumstances last updated at 2022/11/13 03:31:21 UT

RECON