RECON: TNO occultation with 523686

Event between (523686) 14DB143 and star GA0880:13238800 with event index number of 2623180

Geocentric closest approach at 2026/06/26 06:52:43 UTC

J2000 position of star is 19:06:06.1 -00:22:16
Equinox of date position of star is 19:07:21.5 -00:19:56
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 59 degrees from the moon. Moon is 88% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 20.4 AU from the Sun and 19.5 AU from the Earth.
Apparent velocity is 22.2 km/sec on the sky relative to the star, or, 5.6 arcsec/hr.
The 1-sigma error in the time of the event is 179 seconds.
The 1-sigma cross-track error in the shadow position is 1016 km.
The sky-plane scale is 14126.3 km/arcsec.

The object has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 4.1 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523686, (2026/06/26 06:53UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.1 -26:29:18  0.9 45.81  16
Tarazed        19:47:31.1 +10:40:46  2.7 14.84  73
PPM 180573     19:11:13.3 -00:23:00  6.5  0.94  60
PPM 180540     19:06:37.5 -00:53:37  6.9  0.60  59
PPM 180543     19:06:54.3 -00:26:56  9.7  0.18  59
523686         19:07:27.7 -00:19:44 16.2        59
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 27.3 km RECON observability=1.0 and success probability=0.1%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	06:53:31	-14.5	AT	Up	36.1	161.8	Up	06:38:31 - 07:08:31	4821
Kamloops	06:54:14	-14.4	AT	Up	33.3	144.6	Up	06:39:14 - 07:09:14	4711
Kelowna	06:54:13	-15.3	AT	Up	34.3	145.3	Up	06:39:13 - 07:09:13	4654
Peachland	06:54:14	-15.4	AT	Up	34.3	145.0	Up	06:39:14 - 07:09:14	4646
Summerland	06:54:15	-15.5	AT	Up	34.5	145.0	Up	06:39:15 - 07:09:15	4635
Penticton	06:54:14	-15.6	AT	Up	34.6	145.1	Up	06:39:14 - 07:09:14	4630
Oliver	06:54:15	-15.9	AT	Up	34.9	145.0	Up	06:39:15 - 07:09:15	4605
Anarchist Mountain Observatory	06:54:15	-16.1	AT	Up	35.1	145.1	Up	06:39:15 - 07:09:15	4593
Victoria	06:54:27	-15.8	AT	Up	33.9	140.5	Up	06:39:27 - 07:09:27	4553
Okanogan	06:54:16	-16.7	AT	Up	35.5	144.6	Up	06:39:16 - 07:09:16	4545
Brewster	06:54:17	-17.0	AT	Up	35.7	144.3	Up	06:39:17 - 07:09:17	4525
Manson/Chelan	06:54:19	-17.1	AT	Up	35.7	143.8	Up	06:39:19 - 07:09:19	4509
Wenatchee	06:54:20	-17.5	AT	Up	36.0	143.4	Up	06:39:20 - 07:09:20	4473
Ellensburg	06:54:21	-17.9	AT	Up	36.3	143.0	Up	06:39:21 - 07:09:21	4442
Yakima	06:54:22	-18.2	Dark	Up	36.6	142.8	Up	06:39:22 - 07:09:22	4411
Toppenish/White Swan	06:54:22	-18.5	Dark	Up	36.8	142.9	Up	06:39:22 - 07:09:22	4394
PNWRO	06:54:18	-19.1	Dark	Up	37.7	144.4	Up	06:39:18 - 07:09:18	4367
The Dalles	06:54:26	-19.1	Dark	Up	37.1	141.6	Up	06:39:26 - 07:09:26	4333
Maupin	06:54:26	-19.5	Dark	Up	37.5	141.5	Up	06:39:26 - 07:09:26	4301
Sisters	06:54:29	-20.2	Dark	Up	37.9	140.6	Up	06:39:29 - 07:09:29	4231
Bend	06:54:29	-20.5	Dark	Up	38.2	140.7	Up	06:39:29 - 07:09:29	4213
Oregon Observatory	06:54:30	-20.6	Dark	Up	38.3	140.5	Up	06:39:30 - 07:09:30	4199
Chiloquin	06:54:33	-21.8	Dark	Up	39.1	139.4	Up	06:39:33 - 07:09:33	4092
Klamath Falls	06:54:33	-22.1	Dark	Up	39.4	139.3	Up	06:39:33 - 07:09:33	4064
Cedarville	06:54:29	-23.2	Dark	Up	40.7	140.7	Up	06:39:29 - 07:09:29	4008
Fall River/Burney	06:54:34	-23.4	Dark	Up	40.5	139.1	Up	06:39:34 - 07:09:34	3966
Dunrhomin	06:53:39	-26.4	Dark	Up	47.5	159.3	Up	06:38:39 - 07:08:39	3916
Nikitin	06:53:39	-26.5	Dark	Up	47.6	159.2	Up	06:38:39 - 07:08:39	3900
CU-SBO	06:53:39	-26.6	Dark	Up	47.7	159.0	Up	06:38:39 - 07:08:39	3895
Greenville	06:54:34	-24.3	Dark	Up	41.4	139.1	Up	06:39:34 - 07:09:34	3890
Gimple	06:54:34	-24.3	Dark	Up	41.5	139.2	Up	06:39:34 - 07:09:34	3890
Quincy	06:54:34	-24.5	Dark	Up	41.6	139.0	Up	06:39:34 - 07:09:34	3873
Portola	06:54:33	-24.7	Dark	Up	41.9	139.4	Up	06:39:33 - 07:09:33	3863
Reno	06:54:31	-25.1	Dark	Up	42.4	140.0	Up	06:39:31 - 07:09:31	3841
Carson City	06:54:32	-25.5	Dark	Up	42.7	139.9	Up	06:39:32 - 07:09:32	3810
Yerington	06:54:30	-25.8	Dark	Up	43.2	140.5	Up	06:39:30 - 07:09:30	3794
Gardnerville	06:54:32	-25.7	Dark	Up	42.9	139.8	Up	06:39:32 - 07:09:32	3789
Hawthorne	06:54:29	-26.4	Dark	Up	43.8	140.8	Up	06:39:29 - 07:09:29	3754
Lee Vining	06:54:31	-26.8	Dark	Up	44.0	139.9	Up	06:39:31 - 07:09:31	3705
Bishop	06:54:29	-27.6	Dark	Up	44.8	140.4	Up	06:39:29 - 07:09:29	3652
Beatty	06:54:24	-28.3	Dark	Up	46.0	142.1	Up	06:39:24 - 07:09:24	3613
Patrick	06:54:15	-30.3	Dark	Up	48.6	144.8	Up	06:39:15 - 07:09:15	3483
Laughlin/Bullhead City	06:54:18	-30.4	Dark	Up	48.4	143.7	Up	06:39:18 - 07:09:18	3460
Lake Havasu City	06:54:18	-31.1	Dark	Up	49.1	143.6	Up	06:39:18 - 07:09:18	3399
Wildwood	06:54:34	-30.7	Dark	Up	47.2	138.0	Up	06:39:34 - 07:09:34	3357
George/Scottsdale	06:54:09	-32.3	Dark	Up	50.9	146.4	Up	06:39:09 - 07:09:09	3330
Idyllwild	06:54:28	-31.4	Dark	Up	48.5	140.0	Up	06:39:28 - 07:09:28	3327
Calipatria	06:54:24	-32.2	Dark	Up	49.6	141.1	Up	06:39:24 - 07:09:24	3271
Yuma	06:54:21	-32.8	Dark	Up	50.4	141.9	Up	06:39:21 - 07:09:21	3232

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, (2026/06/26 06:53UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 45.81  16
Tarazed        19:46:15.6 +10:36:48  2.7 14.84  73
PPM 180573     19:09:51.6 -00:25:41  6.5  0.94  60
PPM 180540     19:05:15.6 -00:56:08  6.9  0.60  59
PPM 180543     19:05:32.6 -00:29:28  9.7  0.18  59
523686         19:06:06.1 -00:22:16 16.2        59
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:29:43 UT

RECON