RECON: TNO occultation with 182222

Event between (182222) 00YU1 and star GA1080:01179708 with event index number of 2353214

Geocentric closest approach at 2023/11/24 05:56:10 UTC

J2000 position of star is 05:37:29.1 +18:08:10
Equinox of date position of star is 05:38:49.9 +18:08:54
Stellar brightness G=12.5, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 63 degrees from the moon. Moon is 88% illuminated.
Apparent brightness V=23.6

[RECON map]
Object is 42.4 AU from the Sun and 41.5 AU from the Earth.
Apparent velocity is 23.2 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 376 seconds.
The 1-sigma cross-track error in the shadow position is 1576 km.
The sky-plane scale is 30076.0 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=229.1 km assuming a 5% albedo -- 9.2 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 182222, (2023/11/24 05:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.0 +07:24:34  0.4 11.56  68
Alnath         05:27:48.3 +28:37:31  1.6 10.78  61
120 Tau        05:34:55.7 +18:33:19  5.4  1.02  62
PPM 121237     05:41:27.0 +17:41:16  8.4  0.77  64
PPM 121130     05:36:18.3 +18:08:11  9.1  0.61  63
182222         05:38:53.0 +18:08:56 12.5        64
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 2.4 sigma about the mid-time.
The median site spacing is 24.7 km RECON observability=1.0 and success probability=24.2%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	05:58:13	-52.9	Dark	Up	37.6	108.6	Up	05:43:13 - 06:13:13	2366
Kelowna	05:58:14	-53.9	Dark	Up	38.4	108.8	Up	05:43:14 - 06:13:14	2284
Peachland	05:58:15	-53.8	Dark	Up	38.2	108.5	Up	05:43:15 - 06:13:15	2282
Summerland	05:58:15	-54.0	Dark	Up	38.3	108.5	Up	05:43:15 - 06:13:15	2268
Victoria	05:58:25	-52.9	Dark	Up	36.3	104.4	Up	05:43:25 - 06:13:25	2266
Penticton	05:58:15	-54.1	Dark	Up	38.4	108.5	Up	05:43:15 - 06:13:15	2260
Oliver	05:58:16	-54.3	Dark	Up	38.5	108.3	Up	05:43:16 - 06:13:16	2233
Anarchist Mountain Observatory	05:58:16	-54.5	Dark	Up	38.7	108.3	Up	05:43:16 - 06:13:16	2215
Sleaford	05:57:40	-56.8	Dark	Up	44.9	124.4	Up	05:42:40 - 06:12:40	2193
Okanogan	05:58:19	-54.9	Dark	Up	38.8	107.6	Up	05:43:19 - 06:13:19	2168
Brewster	05:58:20	-55.0	Dark	Up	38.7	107.2	Up	05:43:20 - 06:13:20	2151
Manson/Chelan	05:58:21	-54.9	Dark	Up	38.6	106.7	Up	05:43:21 - 06:13:21	2143
Wenatchee	05:58:23	-55.2	Dark	Up	38.6	106.2	Up	05:43:23 - 06:13:23	2108
Ellensburg	05:58:25	-55.3	Dark	Up	38.6	105.7	Up	05:43:25 - 06:13:25	2080
Yakima	05:58:26	-55.6	Dark	Up	38.7	105.4	Up	05:43:26 - 06:13:26	2047
Toppenish/White Swan	05:58:27	-55.8	Dark	Up	38.8	105.4	Up	05:43:27 - 06:13:27	2025
The Dalles	05:58:30	-55.9	Dark	Up	38.5	104.1	Up	05:43:30 - 06:13:30	1980
PNWRO	05:58:25	-56.8	Dark	Up	39.9	106.4	Up	05:43:25 - 06:13:25	1960
Maupin	05:58:32	-56.2	Dark	Up	38.7	103.9	Up	05:43:32 - 06:13:32	1942
Sisters	05:58:35	-56.4	Dark	Up	38.6	102.8	Up	05:43:35 - 06:13:35	1881
Bend	05:58:36	-56.7	Dark	Up	38.8	102.8	Up	05:43:36 - 06:13:36	1855
Oregon Observatory	05:58:36	-56.8	Dark	Up	38.7	102.6	Up	05:43:36 - 06:13:36	1843
Chiloquin	05:58:41	-57.3	Dark	Up	38.7	101.2	Up	05:43:41 - 06:13:41	1742
Klamath Falls	05:58:42	-57.5	Dark	Up	38.9	101.0	Up	05:43:42 - 06:13:42	1710
Cedarville	05:58:41	-58.9	Dark	Up	40.2	101.7	Up	05:43:41 - 06:13:41	1610
Fall River/Burney	05:58:44	-58.4	Dark	Up	39.4	100.4	Up	05:43:44 - 06:13:44	1598
Greenville	05:58:46	-59.2	Dark	Up	39.9	100.0	Up	05:43:46 - 06:13:46	1507
Gimple	05:58:46	-59.2	Dark	Up	39.9	100.1	Up	05:43:46 - 06:13:46	1504
Quincy	05:58:47	-59.3	Dark	Up	39.9	99.8	Up	05:43:47 - 06:13:47	1489
Portola	05:58:46	-59.7	Dark	Up	40.3	100.1	Up	05:43:46 - 06:13:46	1465
Reno	05:58:45	-60.2	Dark	Up	40.8	100.4	Up	05:43:45 - 06:13:45	1425
Carson City	05:58:46	-60.4	Dark	Up	40.9	100.1	Up	05:43:46 - 06:13:46	1392
Gardnerville	05:58:47	-60.6	Dark	Up	41.0	99.9	Up	05:43:47 - 06:13:47	1369
Yerington	05:58:45	-60.9	Dark	Up	41.4	100.4	Up	05:43:45 - 06:13:45	1358
Hawthorne	05:58:45	-61.5	Dark	Up	41.9	100.4	Up	05:43:45 - 06:13:45	1302
Lee Vining	05:58:48	-61.5	Dark	Up	41.6	99.5	Up	05:43:48 - 06:13:48	1264
Bishop	05:58:48	-62.3	Dark	Up	42.3	99.5	Up	05:43:48 - 06:13:48	1189
Dunrhomin	05:58:07	-67.6	Dark	Up	51.3	113.8	Up	05:43:07 - 06:13:07	1138
Nikitin	05:58:07	-67.8	Dark	Up	51.3	113.6	Up	05:43:07 - 06:13:07	1121
CU-SBO	05:58:07	-67.8	Dark	Up	51.3	113.4	Up	05:43:07 - 06:13:07	1117
Beatty	05:58:45	-63.7	Dark	Up	43.7	100.3	Up	05:43:45 - 06:13:45	1104
Wildwood	05:58:56	-63.7	Dark	Up	42.6	96.4	Up	05:43:56 - 06:13:56	889
Patrick	05:58:41	-66.4	Dark	Up	46.2	101.0	Up	05:43:41 - 06:13:41	888
Laughlin/Bullhead City	05:58:44	-66.1	Dark	Up	45.7	100.2	Up	05:43:44 - 06:13:44	883
Lake Havasu City	05:58:45	-66.6	Dark	Up	46.0	99.7	Up	05:43:45 - 06:13:45	812
Idyllwild	05:58:53	-65.3	Dark	Up	44.2	97.3	Up	05:43:53 - 06:13:53	803
Calipatria	05:58:51	-66.4	Dark	Up	45.3	97.5	Up	05:43:51 - 06:13:51	712
George/Scottsdale	05:58:40	-68.7	Dark	Up	48.2	100.6	Up	05:43:40 - 06:13:40	672
Yuma	05:58:50	-67.3	Dark	Up	46.1	97.6	Up	05:43:50 - 06:13:50	646

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 182222, (2023/11/24 05:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.56  68
Alnath         05:26:17.6 +28:36:23  1.6 10.78  61
120 Tau        05:33:31.6 +18:32:25  5.4  1.02  62
PPM 121237     05:40:03.4 +17:40:36  8.4  0.77  64
PPM 121130     05:34:54.5 +18:07:21  9.1  0.61  63
182222         05:37:29.1 +18:08:10 12.5        63
Positions are for J2000

Event circumstances last updated at 2023/01/11 04:44:12 UT

RECON