RECON: TNO occultation with 528219

Event between (528219) 08KV42 and star GA1440:04935702 with event index number of 2442612

Geocentric closest approach at 2023/02/11 12:35:21 UTC

J2000 position of star is 16:28:07.6 +55:36:41
Equinox of date position of star is 16:28:37.0 +55:33:41
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 74 degrees from the moon. Moon is 72% illuminated.
Apparent brightness V=22.8

[RECON map]
Object is 24.2 AU from the Sun and 24.1 AU from the Earth.
Apparent velocity is 35.3 km/sec on the sky relative to the star, or, 7.3 arcsec/hr.
The 1-sigma error in the time of the event is 109 seconds.
The 1-sigma cross-track error in the shadow position is 1381 km.
The sky-plane scale is 17501.7 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=104.7 km assuming a 5% albedo -- 3.2 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 

Star training set for 528219, (2023/02/11 12:35UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:43.3 +38:48:22  0.0 27.20  84
23Bet Dra      17:30:57.4 +52:17:06  2.8  9.72  79
PPM 035560     16:38:28.6 +55:58:16  5.3  1.45  75
PPM 035447     16:24:47.7 +55:16:41  7.5  0.61  73
PPM 035490     16:29:50.0 +55:30:27 10.3  0.18  74
528219         16:28:37.1 +55:33:41 17.0        74
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 5.4 km RECON observability=1.0 and success probability=19.7%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Fall River/Burney	12:34:43	-28.9	Dark	Up	61.1	46.6	Up	12:25:07 - 12:44:19	2181
Klamath Falls	12:34:47	-29.0	Dark	Up	61.7	48.3	Up	12:25:11 - 12:44:23	2177
Quincy	12:34:40	-28.7	Dark	Up	60.6	45.1	Up	12:25:04 - 12:44:16	2176
Chiloquin	12:34:48	-29.0	Dark	Up	61.9	48.8	Up	12:25:12 - 12:44:24	2173
Greenville	12:34:40	-28.6	Dark	Up	60.7	45.3	Up	12:25:04 - 12:44:16	2171
Gimple	12:34:40	-28.6	Dark	Up	60.8	45.3	Up	12:25:04 - 12:44:16	2165
Portola	12:34:39	-28.3	Dark	Up	60.7	44.7	Up	12:25:03 - 12:44:15	2143
Wildwood	12:34:21	-27.2	Dark	Up	57.4	37.7	Up	12:24:45 - 12:43:57	2114
Gardnerville	12:34:36	-27.8	Dark	Up	60.5	43.4	Up	12:25:00 - 12:44:12	2109
Oregon Observatory	12:34:52	-28.5	Dark	Up	63.0	50.6	Up	12:25:16 - 12:44:28	2107
Carson City	12:34:37	-27.8	Dark	Up	60.7	43.7	Up	12:25:01 - 12:44:13	2107
Sisters	12:34:53	-28.5	Dark	Up	63.2	51.3	Up	12:25:17 - 12:44:29	2104
Reno	12:34:38	-27.8	Dark	Up	60.9	44.2	Up	12:25:02 - 12:44:14	2100
Bend	12:34:52	-28.4	Dark	Up	63.2	50.9	Up	12:25:16 - 12:44:28	2093
Victoria	12:35:06	-29.0	Dark	Up	64.6	58.5	Up	12:25:30 - 12:44:42	2092
Lee Vining	12:34:33	-27.4	Dark	Up	60.1	42.0	Up	12:24:57 - 12:44:09	2082
Cedarville	12:34:44	-27.9	Dark	Up	62.1	46.9	Up	12:25:08 - 12:44:20	2079
Yerington	12:34:36	-27.4	Dark	Up	60.9	43.3	Up	12:25:00 - 12:44:12	2062
Maupin	12:34:55	-28.1	Dark	Up	64.0	52.6	Up	12:25:19 - 12:44:31	2044
The Dalles	12:34:56	-28.1	Dark	Up	64.2	53.3	Up	12:25:20 - 12:44:32	2039
Bishop	12:34:31	-26.9	Dark	Up	60.0	41.0	Up	12:24:55 - 12:44:07	2037
Hawthorne	12:34:34	-27.0	Dark	Up	60.8	42.5	Up	12:24:58 - 12:44:10	2032
Yakima	12:34:59	-27.5	Dark	Up	65.1	54.9	Up	12:25:23 - 12:44:35	1968
Idyllwild	12:34:19	-25.6	Dark	Up	58.0	36.5	Up	12:24:43 - 12:43:55	1964
Toppenish/White Swan	12:34:58	-27.4	Dark	Up	65.1	54.5	Up	12:25:22 - 12:44:34	1963
Ellensburg	12:35:00	-27.4	Dark	Up	65.4	55.6	Up	12:25:24 - 12:44:36	1955
Wenatchee	12:35:01	-27.2	Dark	Up	65.7	56.4	Up	12:25:25 - 12:44:37	1928
Beatty	12:34:28	-25.6	Dark	Up	60.5	39.8	Up	12:24:52 - 12:44:04	1915
Manson/Chelan	12:35:02	-27.0	Dark	Up	66.1	57.2	Up	12:25:26 - 12:44:38	1902
Brewster	12:35:03	-26.7	Dark	Up	66.4	57.6	Up	12:25:27 - 12:44:39	1872
Calipatria	12:34:16	-24.6	Dark	Up	58.1	35.3	Up	12:24:40 - 12:43:52	1872
PNWRO	12:34:55	-26.4	Dark	Up	65.7	53.6	Up	12:25:19 - 12:44:31	1871
Okanogan	12:35:03	-26.5	Dark	Up	66.7	58.1	Up	12:25:27 - 12:44:39	1851
Kamloops	12:35:10	-26.6	Dark	Up	67.4	62.9	Up	12:25:34 - 12:44:46	1829
Oliver	12:35:05	-26.4	Dark	Up	67.1	59.8	Up	12:25:29 - 12:44:41	1825
Peachland	12:35:07	-26.4	Dark	Up	67.3	60.9	Up	12:25:31 - 12:44:43	1820
Summerland	12:35:07	-26.4	Dark	Up	67.3	60.6	Up	12:25:31 - 12:44:43	1819
Anarchist Mountain Observatory	12:35:05	-26.3	Dark	Up	67.1	59.4	Up	12:25:29 - 12:44:41	1817
Penticton	12:35:07	-26.3	Dark	Up	67.3	60.5	Up	12:25:31 - 12:44:43	1814
Yuma	12:34:15	-23.9	Dark	Up	58.2	34.4	Up	12:24:39 - 12:43:51	1801
Kelowna	12:35:07	-26.2	Dark	Up	67.5	61.2	Up	12:25:31 - 12:44:43	1798
Laughlin/Bullhead City	12:34:21	-23.9	Dark	Up	60.2	36.7	Up	12:24:45 - 12:43:57	1763
Lake Havasu City	12:34:19	-23.6	Dark	Up	59.8	35.9	Up	12:24:43 - 12:43:55	1751
Patrick	12:34:22	-23.3	Dark	Up	60.8	36.6	Up	12:24:46 - 12:43:58	1700
George/Scottsdale	12:34:16	-21.6	Dark	Up	60.3	33.6	Up	12:24:40 - 12:43:52	1549
CU-SBO	12:34:31	-16.7	AT	Up	68.5	35.9	Up	12:24:55 - 12:44:07	935
Nikitin	12:34:31	-16.6	AT	Up	68.6	36.0	Up	12:24:55 - 12:44:07	927
Dunrhomin	12:34:32	-16.6	AT	Up	68.8	36.2	Up	12:24:56 - 12:44:08	924
Sleaford	12:35:08	-17.5	AT	Up	76.1	66.3	Up	12:25:32 - 12:44:44	865

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 528219, (2023/02/11 12:35UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 27.20  84
23Bet Dra      17:30:25.9 +52:18:05  2.8  9.72  79
PPM 035560     16:38:00.4 +56:00:57  5.3  1.45  75
PPM 035447     16:24:17.4 +55:19:48  7.5  0.61  73
PPM 035490     16:29:20.5 +55:33:25 10.3  0.18  74
528219         16:28:07.6 +55:36:41 17.0        74
Positions are for J2000

Event circumstances last updated at 2023/01/09 03:32:46 UT

RECON