RECON: TNO occultation with 523686

Event between (523686) 14DB143 and star GA0880:13901023 with event index number of 2623110

Geocentric closest approach at 2026/05/31 08:13:06 UTC

J2000 position of star is 19:09:36.7 -00:29:37
Equinox of date position of star is 19:10:52.2 -00:27:09
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 47 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 20.4 AU from the Sun and 19.6 AU from the Earth.
Apparent velocity is 17.7 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 218 seconds.
The 1-sigma cross-track error in the shadow position is 1650 km.
The sky-plane scale is 14250.2 km/arcsec.

The object has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 5.1 sec chord
Diameter=37.2 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523686, (2026/05/31 08:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:01.9 -26:29:18  0.9 46.43   0
Tarazed        19:47:30.9 +10:40:46  2.7 14.37  61
PPM 180573     19:11:13.1 -00:23:01  6.5  0.09  47
523686         19:10:58.2 -00:26:57 15.1        47
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 23.5 km RECON observability=1.0 and success probability=16.5%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	08:15:45	-14.2	AT	Up	34.7	154.8	Up	08:00:45 - 08:30:45	3317
Kamloops	08:16:33	-17.3	AT	Up	30.9	138.3	Up	08:01:33 - 08:31:33	2948
Kelowna	08:16:31	-18.1	Dark	Up	31.9	138.9	Up	08:01:31 - 08:31:31	2897
Peachland	08:16:33	-18.2	Dark	Up	31.9	138.6	Up	08:01:33 - 08:31:33	2883
Summerland	08:16:32	-18.3	Dark	Up	32.0	138.6	Up	08:01:32 - 08:31:32	2872
Penticton	08:16:32	-18.4	Dark	Up	32.1	138.7	Up	08:01:32 - 08:31:32	2869
Oliver	08:16:33	-18.7	Dark	Up	32.4	138.6	Up	08:01:33 - 08:31:33	2839
Anarchist Mountain Observatory	08:16:32	-18.9	Dark	Up	32.6	138.7	Up	08:01:32 - 08:31:32	2829
Okanogan	08:16:34	-19.5	Dark	Up	33.0	138.2	Up	08:01:34 - 08:31:34	2771
Brewster	08:16:35	-19.8	Dark	Up	33.1	137.9	Up	08:01:35 - 08:31:35	2744
Manson/Chelan	08:16:36	-20.1	Dark	Up	33.1	137.4	Up	08:01:36 - 08:31:36	2720
Victoria	08:16:46	-19.5	Dark	Up	31.1	134.3	Up	08:01:46 - 08:31:46	2716
Wenatchee	08:16:38	-20.5	Dark	Up	33.4	137.0	Up	08:01:38 - 08:31:38	2677
Ellensburg	08:16:39	-21.0	Dark	Up	33.6	136.6	Up	08:01:39 - 08:31:39	2638
Yakima	08:16:39	-21.4	Dark	Up	33.8	136.4	Up	08:01:39 - 08:31:39	2602
Toppenish/White Swan	08:16:39	-21.6	Dark	Up	34.1	136.5	Up	08:01:39 - 08:31:39	2587
PNWRO	08:16:35	-21.9	Dark	Up	35.1	137.9	Up	08:01:35 - 08:31:35	2583
The Dalles	08:16:43	-22.4	Dark	Up	34.3	135.3	Up	08:01:43 - 08:31:43	2504
Maupin	08:16:43	-22.8	Dark	Up	34.6	135.2	Up	08:01:43 - 08:31:43	2470
Sisters	08:16:45	-23.7	Dark	Up	35.0	134.2	Up	08:01:45 - 08:31:45	2383
Dunrhomin	08:15:44	-25.2	Dark	Up	45.4	151.2	Up	08:00:44 - 08:30:44	2374
Bend	08:16:45	-23.9	Dark	Up	35.3	134.4	Up	08:01:45 - 08:31:45	2367
Nikitin	08:15:44	-25.4	Dark	Up	45.6	151.0	Up	08:00:44 - 08:30:44	2357
CU-SBO	08:15:45	-25.5	Dark	Up	45.6	150.9	Up	08:00:45 - 08:30:45	2350
Oregon Observatory	08:16:46	-24.1	Dark	Up	35.3	134.2	Up	08:01:46 - 08:31:46	2349
Chiloquin	08:16:48	-25.4	Dark	Up	36.0	133.1	Up	08:01:48 - 08:31:48	2222
Klamath Falls	08:16:48	-25.8	Dark	Up	36.3	133.0	Up	08:01:48 - 08:31:48	2193
Cedarville	08:16:43	-26.4	Dark	Up	37.7	134.3	Up	08:01:43 - 08:31:43	2161
Fall River/Burney	08:16:48	-26.9	Dark	Up	37.3	132.7	Up	08:01:48 - 08:31:48	2092
Gimple	08:16:48	-27.8	Dark	Up	38.2	132.8	Up	08:01:48 - 08:31:48	2019
Greenville	08:16:47	-27.8	Dark	Up	38.2	132.7	Up	08:01:47 - 08:31:47	2017
Quincy	08:16:47	-28.0	Dark	Up	38.3	132.5	Up	08:01:47 - 08:31:47	1998
Portola	08:16:46	-28.1	Dark	Up	38.7	133.0	Up	08:01:46 - 08:31:46	1997
Reno	08:16:44	-28.3	Dark	Up	39.2	133.5	Up	08:01:44 - 08:31:44	1985
Carson City	08:16:44	-28.7	Dark	Up	39.5	133.3	Up	08:01:44 - 08:31:44	1952
Yerington	08:16:42	-28.8	Dark	Up	40.0	133.9	Up	08:01:42 - 08:31:42	1947
Gardnerville	08:16:44	-28.9	Dark	Up	39.7	133.2	Up	08:01:44 - 08:31:44	1930
Hawthorne	08:16:40	-29.3	Dark	Up	40.6	134.2	Up	08:01:40 - 08:31:40	1915
Lee Vining	08:16:42	-29.9	Dark	Up	40.7	133.3	Up	08:01:42 - 08:31:42	1852
Bishop	08:16:39	-30.4	Dark	Up	41.5	133.7	Up	08:01:39 - 08:31:39	1811
Beatty	08:16:33	-30.7	Dark	Up	42.8	135.2	Up	08:01:33 - 08:31:33	1803
Patrick	08:16:22	-31.7	Dark	Up	45.4	137.5	Up	08:01:22 - 08:31:22	1728
Laughlin/Bullhead City	08:16:25	-32.1	Dark	Up	45.2	136.5	Up	08:01:25 - 08:31:25	1687
Lake Havasu City	08:16:24	-32.7	Dark	Up	45.8	136.3	Up	08:01:24 - 08:31:24	1629
George/Scottsdale	08:16:13	-33.0	Dark	Up	47.8	138.7	Up	08:01:13 - 08:31:13	1613
Idyllwild	08:16:34	-33.8	Dark	Up	45.0	133.0	Up	08:01:34 - 08:31:34	1500
Wildwood	08:16:42	-33.7	Dark	Up	43.6	131.2	Up	08:01:42 - 08:31:42	1492
Calipatria	08:16:29	-34.2	Dark	Up	46.1	133.9	Up	08:01:29 - 08:31:29	1468
Yuma	08:16:26	-34.5	Dark	Up	47.0	134.6	Up	08:01:26 - 08:31:26	1447

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 523686, (2026/05/31 08:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 46.43   0
Tarazed        19:46:15.6 +10:36:48  2.7 14.37  61
PPM 180573     19:09:51.6 -00:25:41  6.5  0.09  47
523686         19:09:36.7 -00:29:37 15.1        47
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:25:24 UT

RECON