RECON: TNO occultation with 523686

Event between (523686) 14DB143 and star GA0900:11998051 with event index number of 2623961

Geocentric closest approach at 2027/07/26 06:42:50 UTC

J2000 position of star is 19:17:23.5 +00:14:22
Equinox of date position of star is 19:18:38.6 +00:17:06
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 95 degrees from the moon. Moon is 55% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 20.5 AU from the Sun and 19.6 AU from the Earth.
Apparent velocity is 22.3 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 201 seconds.
The 1-sigma cross-track error in the shadow position is 1510 km.
The sky-plane scale is 14220.1 km/arcsec.

The object has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 4.0 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523686, (2027/07/26 06:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.1 -26:29:26  0.9 48.42 138
Tarazed        19:47:34.2 +10:40:56  2.7 12.61  85
27 Aql         19:22:01.0 -00:50:20  5.4  1.39  94
PPM 167592     19:19:55.8 +00:28:32  7.5  0.34  94
PPM 167550     19:18:35.5 +00:32:54  8.7  0.26  94
523686         19:18:48.1 +00:17:27 16.7        94
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 4.5 sigma about the mid-time.
The median site spacing is 22.1 km RECON observability=1.0 and success probability=4.1%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	06:42:16	-17.4	AT	Up	39.4	173.0	Up	06:27:16 - 06:57:16	4697
Kelowna	06:42:15	-18.3	Dark	Up	40.2	174.1	Up	06:27:15 - 06:57:15	4627
Peachland	06:42:16	-18.4	Dark	Up	40.3	173.7	Up	06:27:16 - 06:57:16	4624
Summerland	06:42:16	-18.5	Dark	Up	40.5	173.8	Up	06:27:16 - 06:57:16	4613
Penticton	06:42:15	-18.6	Dark	Up	40.5	173.9	Up	06:27:15 - 06:57:15	4606
Victoria	06:42:29	-18.6	Dark	Up	41.2	168.8	Up	06:27:29 - 06:57:29	4601
Oliver	06:42:16	-18.9	Dark	Up	40.9	173.9	Up	06:27:16 - 06:57:16	4582
Anarchist Mountain Observatory	06:42:15	-19.1	Dark	Up	41.1	174.2	Up	06:27:15 - 06:57:15	4567
Sleaford	06:41:32	-18.2	Dark	Up	37.6	191.2	Up	06:26:32 - 06:56:32	4561
Okanogan	06:42:17	-19.7	Dark	Up	41.7	173.8	Up	06:27:17 - 06:57:17	4525
Brewster	06:42:17	-19.9	Dark	Up	42.0	173.5	Up	06:27:17 - 06:57:17	4509
Manson/Chelan	06:42:19	-20.0	Dark	Up	42.1	173.0	Up	06:27:19 - 06:57:19	4501
Wenatchee	06:42:20	-20.4	Dark	Up	42.6	172.7	Up	06:27:20 - 06:57:20	4470
Ellensburg	06:42:21	-20.7	Dark	Up	43.0	172.4	Up	06:27:21 - 06:57:21	4444
Yakima	06:42:22	-21.1	Dark	Up	43.4	172.3	Up	06:27:22 - 06:57:22	4415
Toppenish/White Swan	06:42:21	-21.4	Dark	Up	43.6	172.5	Up	06:27:21 - 06:57:21	4396
The Dalles	06:42:25	-21.9	Dark	Up	44.3	171.3	Up	06:27:25 - 06:57:25	4353
PNWRO	06:42:17	-22.1	Dark	Up	44.1	174.5	Up	06:27:17 - 06:57:17	4342
Maupin	06:42:25	-22.3	Dark	Up	44.7	171.4	Up	06:27:25 - 06:57:25	4320
Sisters	06:42:28	-23.0	Dark	Up	45.6	170.6	Up	06:27:28 - 06:57:28	4263
Bend	06:42:27	-23.3	Dark	Up	45.8	170.9	Up	06:27:27 - 06:57:27	4241
Oregon Observatory	06:42:28	-23.4	Dark	Up	46.0	170.7	Up	06:27:28 - 06:57:28	4230
Chiloquin	06:42:31	-24.5	Dark	Up	47.2	169.9	Up	06:27:31 - 06:57:31	4136
Klamath Falls	06:42:31	-24.8	Dark	Up	47.6	170.0	Up	06:27:31 - 06:57:31	4108
Cedarville	06:42:26	-25.9	Dark	Up	48.4	172.2	Up	06:27:26 - 06:57:26	4022
Fall River/Burney	06:42:31	-26.0	Dark	Up	48.8	170.3	Up	06:27:31 - 06:57:31	4007
Greenville	06:42:31	-27.0	Dark	Up	49.7	170.8	Up	06:27:31 - 06:57:31	3926
Gimple	06:42:30	-27.0	Dark	Up	49.7	170.9	Up	06:27:30 - 06:57:30	3924
Quincy	06:42:31	-27.2	Dark	Up	49.9	170.8	Up	06:27:31 - 06:57:31	3909
Portola	06:42:29	-27.4	Dark	Up	50.1	171.5	Up	06:27:29 - 06:57:29	3890
Reno	06:42:27	-27.9	Dark	Up	50.4	172.4	Up	06:27:27 - 06:57:27	3855
Carson City	06:42:28	-28.2	Dark	Up	50.8	172.4	Up	06:27:28 - 06:57:28	3825
Gardnerville	06:42:28	-28.4	Dark	Up	51.1	172.4	Up	06:27:28 - 06:57:28	3804
Yerington	06:42:25	-28.6	Dark	Up	51.1	173.4	Up	06:27:25 - 06:57:25	3796
Hawthorne	06:42:24	-29.1	Dark	Up	51.6	174.1	Up	06:27:24 - 06:57:24	3747
Lee Vining	06:42:27	-29.5	Dark	Up	52.1	173.3	Up	06:27:27 - 06:57:27	3710
Bishop	06:42:24	-30.3	Dark	Up	52.7	174.4	Up	06:27:24 - 06:57:24	3644
Dunrhomin	06:41:33	-30.0	Dark	Up	49.0	194.8	Up	06:26:33 - 06:56:33	3625
Nikitin	06:41:33	-30.2	Dark	Up	49.2	194.8	Up	06:26:33 - 06:56:33	3610
CU-SBO	06:41:33	-30.2	Dark	Up	49.3	194.7	Up	06:26:33 - 06:56:33	3606
Beatty	06:42:18	-31.2	Dark	Up	53.3	177.0	Up	06:27:18 - 06:57:18	3570
Patrick	06:42:09	-33.3	Dark	Up	54.8	181.9	Up	06:27:09 - 06:57:09	3380
Laughlin/Bullhead City	06:42:12	-33.4	Dark	Up	55.1	180.6	Up	06:27:12 - 06:57:12	3373
Wildwood	06:42:29	-33.3	Dark	Up	56.0	173.6	Up	06:27:29 - 06:57:29	3363
Lake Havasu City	06:42:12	-34.1	Dark	Up	55.7	181.1	Up	06:27:12 - 06:57:12	3308
Idyllwild	06:42:22	-34.2	Dark	Up	56.5	176.9	Up	06:27:22 - 06:57:22	3291
Calipatria	06:42:18	-35.1	Dark	Up	57.1	179.0	Up	06:27:18 - 06:57:18	3210
George/Scottsdale	06:42:02	-35.4	Dark	Up	56.4	185.5	Up	06:27:02 - 06:57:02	3185
Yuma	06:42:14	-35.7	Dark	Up	57.5	180.6	Up	06:27:14 - 06:57:14	3152

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, (2027/07/26 06:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 48.42 138
Tarazed        19:46:15.6 +10:36:48  2.7 12.61  85
27 Aql         19:20:35.7 -00:53:32  5.4  1.39  94
PPM 167592     19:18:31.3 +00:25:25  7.5  0.34  94
PPM 167550     19:17:11.0 +00:29:50  8.7  0.26  94
523686         19:17:23.5 +00:14:22 16.7        94
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:27:33 UT

RECON