RECON: TNO occultation with 534631

Event between (534631) 14UX229 and star GA1220:00729876 with event index number of 2388577

Geocentric closest approach at 2027/10/05 06:34:47 UTC

J2000 position of star is 03:48:36.3 +32:01:31
Equinox of date position of star is 03:50:02.8 +32:05:39
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 163 degrees from the moon. Moon is 29% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 28.3 AU from the Sun and 27.6 AU from the Earth.
The TNO is moving 14.4 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 215 seconds.
The 1-sigma cross-track error in the shadow position is 1714 km.
The sky-plane scale is 20035.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.9
Diameter=131.8 km assuming a 5% albedo -- 7.1 sec chord
Diameter=53.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 534631, (2027/10/05 06:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.0 +16:33:47  0.8 18.86 168
44Zet Per      03:55:53.1 +31:57:49  2.8  1.18 165
38Omi Per      03:46:04.0 +32:22:26  3.7  0.94 162
PPM 068791     03:50:08.5 +32:02:45  8.5  0.08 163
534631         03:50:21.3 +32:06:31 14.0       164
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 4.2 sigma about the mid-time.
The median site spacing is 28.1 km RECON observability=1.0 and success probability=18.9%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	06:39:40	-41.7	Dark	Down	40.3	86.4	Up	06:24:40 - 06:54:40	3500
Kelowna	06:39:41	-42.7	Dark	Down	40.8	86.4	Up	06:24:41 - 06:54:41	3399
Peachland	06:39:42	-42.7	Dark	Down	40.6	86.1	Up	06:24:42 - 06:54:42	3397
Victoria	06:39:57	-42.8	Dark	Down	38.2	82.6	Up	06:24:57 - 06:54:57	3386
Summerland	06:39:42	-42.9	Dark	Down	40.7	86.0	Up	06:24:42 - 06:54:42	3380
Penticton	06:39:42	-42.9	Dark	Down	40.7	86.1	Up	06:24:42 - 06:54:42	3371
Oliver	06:39:44	-43.3	Dark	Down	40.7	85.8	Up	06:24:44 - 06:54:44	3338
Anarchist Mountain Observatory	06:39:44	-43.5	Dark	Down	40.8	85.8	Up	06:24:44 - 06:54:44	3316
Sleaford	06:38:52	-42.5	Dark	Down	49.1	99.4	Up	06:23:52 - 06:53:52	3305
Okanogan	06:39:47	-44.0	Dark	Down	40.7	85.1	Up	06:24:47 - 06:54:47	3261
Brewster	06:39:49	-44.2	Dark	Down	40.5	84.7	Up	06:24:49 - 06:54:49	3240
Manson/Chelan	06:39:50	-44.3	Dark	Down	40.2	84.3	Up	06:24:50 - 06:54:50	3231
Wenatchee	06:39:53	-44.7	Dark	Down	40.1	83.8	Up	06:24:53 - 06:54:53	3190
Ellensburg	06:39:55	-45.0	Dark	Down	39.9	83.3	Up	06:24:55 - 06:54:55	3157
Yakima	06:39:57	-45.4	Dark	Down	39.8	82.9	Up	06:24:57 - 06:54:57	3119
Toppenish/White Swan	06:39:57	-45.6	Dark	Down	39.9	82.9	Up	06:24:57 - 06:54:57	3093
The Dalles	06:40:02	-46.1	Dark	Down	39.3	81.7	Up	06:25:02 - 06:55:02	3041
PNWRO	06:39:54	-46.4	Dark	Down	40.9	83.5	Up	06:24:54 - 06:54:54	3013
Maupin	06:40:04	-46.5	Dark	Down	39.3	81.5	Up	06:25:04 - 06:55:04	2998
Sisters	06:40:08	-47.1	Dark	Down	38.8	80.5	Up	06:25:08 - 06:55:08	2928
Bend	06:40:08	-47.4	Dark	Down	39.0	80.4	Up	06:25:08 - 06:55:08	2897
Oregon Observatory	06:40:09	-47.5	Dark	Down	38.9	80.2	Up	06:25:09 - 06:55:09	2884
Chiloquin	06:40:15	-48.5	Dark	Down	38.3	79.0	Up	06:25:15 - 06:55:15	2768
Klamath Falls	06:40:16	-48.9	Dark	Down	38.3	78.7	Up	06:25:16 - 06:55:16	2732
Cedarville	06:40:14	-50.0	Dark	Down	39.4	79.1	Up	06:25:14 - 06:55:14	2612
Fall River/Burney	06:40:19	-50.0	Dark	Down	38.4	78.0	Up	06:25:19 - 06:55:19	2604
Greenville	06:40:20	-51.0	Dark	Down	38.5	77.6	Up	06:25:20 - 06:55:20	2499
Gimple	06:40:20	-51.0	Dark	Down	38.6	77.6	Up	06:25:20 - 06:55:20	2496
Quincy	06:40:21	-51.2	Dark	Down	38.5	77.4	Up	06:25:21 - 06:55:21	2479
Portola	06:40:20	-51.5	Dark	Down	38.8	77.6	Up	06:25:20 - 06:55:20	2451
Reno	06:40:19	-51.9	Dark	Down	39.2	77.7	Up	06:25:19 - 06:55:19	2403
Carson City	06:40:20	-52.3	Dark	Down	39.2	77.4	Up	06:25:20 - 06:55:20	2366
Gardnerville	06:40:20	-52.5	Dark	Down	39.2	77.2	Up	06:25:20 - 06:55:20	2340
Yerington	06:40:18	-52.7	Dark	Down	39.6	77.6	Up	06:25:18 - 06:55:18	2326
Hawthorne	06:40:18	-53.3	Dark	Down	39.9	77.4	Up	06:25:18 - 06:55:18	2262
Lee Vining	06:40:21	-53.6	Dark	Down	39.4	76.8	Up	06:25:21 - 06:55:21	2221
Bishop	06:40:20	-54.4	Dark	Down	39.9	76.6	Up	06:25:20 - 06:55:20	2137
Dunrhomin	06:39:23	-54.3	Dark	Down	50.3	86.1	Up	06:24:23 - 06:54:23	2072
CU-SBO	06:39:24	-54.6	Dark	Down	50.2	85.7	Up	06:24:24 - 06:54:24	2048
Beatty	06:40:16	-55.4	Dark	Down	41.0	76.9	Up	06:25:16 - 06:55:16	2037
Wildwood	06:40:29	-57.2	Dark	Down	38.9	73.9	Up	06:25:29 - 06:55:29	1810
Patrick	06:40:09	-57.6	Dark	Down	42.9	76.9	Up	06:25:09 - 06:55:09	1794
Laughlin/Bullhead City	06:40:12	-57.7	Dark	Down	42.3	76.4	Up	06:25:12 - 06:55:12	1790
Lake Havasu City	06:40:13	-58.4	Dark	Down	42.4	75.9	Up	06:25:13 - 06:55:13	1713
Idyllwild	06:40:23	-58.2	Dark	Down	40.3	74.3	Up	06:25:23 - 06:55:23	1710
Calipatria	06:40:20	-59.2	Dark	Down	41.1	74.3	Up	06:25:20 - 06:55:20	1609
George/Scottsdale	06:40:05	-59.8	Dark	Down	44.1	76.1	Up	06:25:05 - 06:55:05	1557
Yuma	06:40:18	-59.9	Dark	Down	41.7	74.2	Up	06:25:18 - 06:55:18	1535

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 534631, (2027/10/05 06:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 18.86 168
44Zet Per      03:54:07.9 +31:53:01  2.8  1.18 165
38Omi Per      03:44:19.1 +32:17:17  3.7  0.94 162
PPM 068791     03:48:23.6 +31:57:45  8.5  0.08 163
534631         03:48:36.3 +32:01:31 14.0       163
Positions are for J2000

Event circumstances last updated at 2022/11/23 03:24:26 UT

RECON