RECON: TNO occultation with 576162

Event between (576162) 12GT41 and star GA0800:20231049 with event index number of 2523327

Geocentric closest approach at 2027/08/20 04:44:22 UTC

J2000 position of star is 19:42:11.8 -08:24:01
Equinox of date position of star is 19:43:26.2 -08:20:42
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 63 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 18.5 AU from the Sun and 17.6 AU from the Earth.
The TNO is moving 19.5 km/sec on the sky relative to the star, or, 5.5 arcsec/hr.
The 1-sigma error in the time of the event is 176 seconds.
The 1-sigma cross-track error in the shadow position is 2335 km.
The sky-plane scale is 12764.2 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=73.8 km assuming a 5% albedo -- 3.8 sec chord
Diameter=30.1 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 576162, (2027/08/20 04:46UT)
Object            RA         Dec     mag  sep  mel
Tarazed        19:47:34.4 +10:40:57  2.7 19.04  61
PPM 203194     19:43:33.3 -09:07:39  6.4  0.79  63
PPM 203189     19:43:07.4 -08:33:46  8.5  0.27  63
PPM 203196     19:43:34.0 -08:29:37  9.5  0.16  63
576162         19:43:41.6 -08:20:00 14.8        62
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 5.1 sigma about the mid-time.
The median site spacing is 20.4 km RECON observability=0.8 and success probability=4.6%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Victoria	04:43:09	-12.8	AT	Up	30.4	157.0	Up	04:28:09 - 04:58:09	5463
Kamloops	04:42:54	-13.0	AT	Up	29.1	160.8	Low	04:27:54 - 04:57:54	5447
Peachland	04:42:55	-13.9	AT	Up	30.1	161.3	Up	04:27:55 - 04:57:55	5393
Kelowna	04:42:53	-14.0	AT	Up	30.1	161.6	Up	04:27:53 - 04:57:53	5387
Summerland	04:42:55	-14.1	AT	Up	30.3	161.4	Up	04:27:55 - 04:57:55	5384
Penticton	04:42:55	-14.2	AT	Up	30.4	161.5	Up	04:27:55 - 04:57:55	5378
Oliver	04:42:55	-14.4	AT	Up	30.7	161.4	Up	04:27:55 - 04:57:55	5364
Anarchist Mountain Observatory	04:42:56	-14.6	AT	Up	30.9	161.6	Up	04:27:56 - 04:57:56	5351
Okanogan	04:42:58	-14.9	AT	Up	31.5	161.2	Up	04:27:58 - 04:57:58	5332
Manson/Chelan	04:43:01	-14.9	AT	Up	31.8	160.5	Up	04:28:01 - 04:58:01	5331
Brewster	04:43:00	-15.0	AT	Up	31.7	161.0	Up	04:28:00 - 04:58:00	5327
Wenatchee	04:43:03	-15.1	AT	Up	32.2	160.2	Up	04:28:03 - 04:58:03	5317
Ellensburg	04:43:05	-15.3	AT	Up	32.6	159.9	Up	04:28:05 - 04:58:05	5307
Yakima	04:43:06	-15.5	AT	Up	32.9	159.8	Up	04:28:06 - 04:58:06	5290
Toppenish/White Swan	04:43:06	-15.8	AT	Up	33.2	159.9	Up	04:28:06 - 04:58:06	5274
The Dalles	04:43:11	-15.8	AT	Up	33.7	158.9	Up	04:28:11 - 04:58:11	5268
Maupin	04:43:12	-16.1	AT	Up	34.1	158.9	Up	04:28:12 - 04:58:12	5245
Sisters	04:43:15	-16.4	AT	Up	34.8	158.1	Up	04:28:15 - 04:58:15	5223
PNWRO	04:43:02	-16.8	AT	Up	33.9	161.6	Up	04:28:02 - 04:58:02	5206
Bend	04:43:15	-16.7	AT	Up	35.1	158.4	Up	04:28:15 - 04:58:15	5203
Oregon Observatory	04:43:16	-16.7	AT	Up	35.3	158.2	Up	04:28:16 - 04:58:16	5199
Chiloquin	04:43:22	-17.3	AT	Up	36.4	157.3	Up	04:28:22 - 04:58:22	5151
Klamath Falls	04:43:23	-17.5	AT	Up	36.7	157.3	Up	04:28:23 - 04:58:23	5132
Fall River/Burney	04:43:24	-18.5	Dark	Up	37.9	157.5	Up	04:28:24 - 04:58:24	5058
Cedarville	04:43:19	-18.9	Dark	Up	37.8	159.1	Up	04:28:19 - 04:58:19	5037
Sleaford	04:42:08	-18.2	Dark	Up	29.5	177.0	Low	04:27:08 - 04:57:08	5026
Greenville	04:43:25	-19.3	Dark	Up	38.9	157.7	Up	04:28:25 - 04:58:25	4994
Gimple	04:43:25	-19.3	Dark	Up	38.9	157.8	Up	04:28:25 - 04:58:25	4991
Quincy	04:43:26	-19.4	Dark	Up	39.1	157.7	Up	04:28:26 - 04:58:26	4983
Portola	04:43:25	-19.8	Dark	Up	39.3	158.2	Up	04:28:25 - 04:58:25	4959
Reno	04:43:23	-20.3	Dark	Up	39.8	158.9	Up	04:28:23 - 04:58:23	4919
Carson City	04:43:24	-20.6	Dark	Up	40.1	158.9	Up	04:28:24 - 04:58:24	4899
Gardnerville	04:43:24	-20.7	Dark	Up	40.3	158.8	Up	04:28:24 - 04:58:24	4883
Yerington	04:43:22	-21.1	Dark	Up	40.4	159.6	Up	04:28:22 - 04:58:22	4863
Hawthorne	04:43:21	-21.7	Dark	Up	41.0	160.1	Up	04:28:21 - 04:58:21	4816
Lee Vining	04:43:24	-21.7	Dark	Up	41.4	159.3	Up	04:28:24 - 04:58:24	4804
Bishop	04:43:23	-22.5	Dark	Up	42.2	160.1	Up	04:28:23 - 04:58:23	4740
Beatty	04:43:18	-23.8	Dark	Up	43.0	162.0	Up	04:28:18 - 04:58:18	4646
Wildwood	04:43:33	-24.4	Dark	Up	45.2	158.7	Up	04:28:33 - 04:58:33	4550
Idyllwild	04:43:27	-25.9	Dark	Up	46.1	161.1	Up	04:28:27 - 04:58:27	4448
Laughlin/Bullhead City	04:43:15	-26.3	Dark	Up	45.2	164.4	Up	04:28:15 - 04:58:15	4446
Patrick	04:43:11	-26.6	Dark	Up	45.1	165.5	Up	04:28:11 - 04:58:11	4432
Lake Havasu City	04:43:15	-26.9	Dark	Up	45.9	164.6	Up	04:28:15 - 04:58:15	4393
Dunrhomin	04:42:27	-27.8	Dark	Up	41.3	177.6	Up	04:27:27 - 04:57:27	4362
Calipatria	04:43:24	-27.0	Dark	Up	47.0	162.6	Up	04:28:24 - 04:58:24	4356
CU-SBO	04:42:28	-28.0	Dark	Up	41.6	177.5	Up	04:27:28 - 04:57:28	4350
Yuma	04:43:21	-27.8	Dark	Up	47.6	163.7	Up	04:28:21 - 04:58:21	4288
George/Scottsdale	04:43:07	-28.9	Dark	Up	47.1	167.9	Up	04:28:07 - 04:58:07	4234

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 576162, (2027/08/20 04:46UT)
Object            RA         Dec     mag  sep  mel
Tarazed        19:46:15.6 +10:36:48  2.7 19.04  61
PPM 203194     19:42:03.0 -09:11:39  6.4  0.79  63
PPM 203189     19:41:37.4 -08:37:45  8.5  0.27  63
PPM 203196     19:42:04.0 -08:33:37  9.5  0.16  63
576162         19:42:11.8 -08:24:01 14.8        63
Positions are for J2000

Event circumstances last updated at 2022/11/22 03:42:05 UT

RECON