RECON: TNO occultation with 91205

Event between (91205) 98US43 and star GA1040:01582315 with event index number of 1397053

Geocentric closest approach at 2024/08/28 11:41:38 UTC

J2000 position of star is 06:11:28.1 +15:37:58
Equinox of date position of star is 06:12:47.6 +15:37:33
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 13 degrees from the moon. Moon is 28% illuminated.
Apparent brightness V=24.2

[RECON map]
Object is 38.3 AU from the Sun and 38.8 AU from the Earth.
Apparent velocity is 18.5 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 483 seconds.
The 1-sigma cross-track error in the shadow position is 4189 km.
The sky-plane scale is 28132.7 km/arcsec.

The object has an absolute magnitude Hv=8.2
Diameter=151.4 km assuming a 5% albedo -- 7.3 sec chord
Diameter=61.8 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 91205, (2024/08/28 11:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:30.5 +07:24:35  0.4  9.14  21
Alhena         06:39:08.2 +16:22:34  1.9  6.35  14
69 Ori         06:13:28.6 +16:07:21  4.7  0.52  13
PPM 122048     06:12:38.1 +15:33:17  8.3  0.09  13
91205          06:12:53.1 +15:37:32 16.5        13
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 1.9 sigma about the mid-time.
The median site spacing is 38.5 km RECON observability=0.8 and success probability=5.3%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	11:38:11	-5.4	CT	Up	38.0	116.5	Up	11:23:11 - 11:53:11	8517
Kamloops	11:37:34	-14.0	AT	Up	29.9	102.2	Low	11:22:34 - 11:52:34	8454
Kelowna	11:37:34	-14.0	AT	Up	30.6	102.5	Up	11:22:34 - 11:52:34	8370
Peachland	11:37:32	-14.3	AT	Up	30.4	102.2	Up	11:22:32 - 11:52:32	8361
Summerland	11:37:33	-14.3	AT	Up	30.5	102.2	Up	11:22:33 - 11:52:33	8346
Penticton	11:37:33	-14.3	AT	Up	30.6	102.2	Up	11:22:33 - 11:52:33	8339
Oliver	11:37:32	-14.5	AT	Up	30.7	102.0	Up	11:22:32 - 11:52:32	8305
Anarchist Mountain Observatory	11:37:32	-14.5	AT	Up	30.9	102.1	Up	11:22:32 - 11:52:32	8287
Victoria	11:37:23	-16.9	AT	Up	28.3	98.4	Low	11:22:23 - 11:52:23	8276
Okanogan	11:37:29	-14.9	AT	Up	30.8	101.5	Up	11:22:29 - 11:52:29	8226
Brewster	11:37:28	-15.2	AT	Up	30.8	101.2	Up	11:22:28 - 11:52:28	8201
Manson/Chelan	11:37:27	-15.5	AT	Up	30.5	100.7	Up	11:22:27 - 11:52:27	8184
Wenatchee	11:37:26	-15.9	AT	Up	30.5	100.3	Up	11:22:26 - 11:52:26	8139
Ellensburg	11:37:23	-16.3	AT	Up	30.4	99.9	Up	11:22:23 - 11:52:23	8101
Yakima	11:37:22	-16.5	AT	Up	30.5	99.6	Up	11:22:22 - 11:52:22	8061
Toppenish/White Swan	11:37:24	-16.5	AT	Up	30.6	99.7	Up	11:22:24 - 11:52:24	8038
PNWRO	11:37:25	-15.9	AT	Up	31.7	100.6	Up	11:22:25 - 11:52:25	7989
The Dalles	11:37:19	-17.4	AT	Up	30.2	98.6	Up	11:22:19 - 11:52:19	7968
Maupin	11:37:18	-17.6	AT	Up	30.3	98.4	Up	11:22:18 - 11:52:18	7926
Sisters	11:37:15	-18.4	Dark	Up	30.1	97.5	Up	11:22:15 - 11:52:15	7843
Bend	11:37:15	-18.4	Dark	Up	30.3	97.6	Up	11:22:15 - 11:52:15	7816
Oregon Observatory	11:37:14	-18.6	Dark	Up	30.3	97.4	Up	11:22:14 - 11:52:14	7800
Chiloquin	11:37:10	-19.6	Dark	Up	30.1	96.3	Up	11:22:10 - 11:52:10	7671
Klamath Falls	11:37:09	-19.7	Dark	Up	30.2	96.1	Up	11:22:09 - 11:52:09	7635
Cedarville	11:37:11	-19.1	Dark	Up	31.5	96.9	Up	11:22:11 - 11:52:11	7548
Fall River/Burney	11:37:07	-20.1	Dark	Up	30.6	95.7	Up	11:22:07 - 11:52:07	7511
Greenville	11:37:07	-20.3	Dark	Up	31.0	95.5	Up	11:22:07 - 11:52:07	7413
Gimple	11:37:06	-20.3	Dark	Up	31.1	95.5	Up	11:22:06 - 11:52:06	7412
Quincy	11:37:06	-20.4	Dark	Up	31.0	95.4	Up	11:22:06 - 11:52:06	7392
Portola	11:37:06	-20.2	Dark	Up	31.4	95.6	Up	11:22:06 - 11:52:06	7374
Reno	11:37:08	-19.9	Dark	Up	31.9	95.9	Up	11:22:08 - 11:52:08	7340
Dunrhomin	11:37:50	-9.4	NT	Up	42.9	107.8	Up	11:22:50 - 11:52:50	7328
Nikitin	11:37:51	-9.5	NT	Up	43.0	107.6	Up	11:22:51 - 11:52:51	7309
Carson City	11:37:07	-20.1	Dark	Up	32.0	95.7	Up	11:22:07 - 11:52:07	7302
CU-SBO	11:37:49	-9.6	NT	Up	42.9	107.5	Up	11:22:49 - 11:52:49	7302
Gardnerville	11:37:06	-20.2	Dark	Up	32.1	95.6	Up	11:22:06 - 11:52:06	7276
Yerington	11:37:07	-19.8	Dark	Up	32.5	96.0	Up	11:22:07 - 11:52:07	7276
Hawthorne	11:37:09	-19.6	Dark	Up	33.0	96.1	Up	11:22:09 - 11:52:09	7222
Lee Vining	11:37:06	-20.3	Dark	Up	32.6	95.4	Up	11:22:06 - 11:52:06	7168
Bishop	11:37:07	-20.1	Dark	Up	33.3	95.5	Up	11:22:07 - 11:52:07	7098
Beatty	11:37:11	-19.2	Dark	Up	34.6	96.3	Up	11:22:11 - 11:52:11	7034
Patrick	11:37:16	-17.7	AT	Up	37.1	97.1	Up	11:22:16 - 11:52:16	6853
Laughlin/Bullhead City	11:37:14	-18.4	Dark	Up	36.6	96.5	Up	11:22:14 - 11:52:14	6832
Lake Havasu City	11:37:13	-18.5	Dark	Up	36.9	96.1	Up	11:22:13 - 11:52:13	6758
Wildwood	11:37:00	-21.9	Dark	Up	33.3	93.2	Up	11:22:00 - 11:52:00	6752
Idyllwild	11:37:06	-20.6	Dark	Up	34.9	94.1	Up	11:22:06 - 11:52:06	6696
George/Scottsdale	11:37:20	-16.9	AT	Up	39.0	97.1	Up	11:22:20 - 11:52:20	6658
Calipatria	11:37:08	-20.0	Dark	Up	36.0	94.4	Up	11:22:08 - 11:52:08	6620
Yuma	11:37:11	-19.5	Dark	Up	36.8	94.6	Up	11:22:11 - 11:52:11	6567

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 91205, (2024/08/28 11:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.14  21
Alhena         06:37:42.8 +16:23:56  1.9  6.35  14
69 Ori         06:12:03.2 +16:07:49  4.7  0.52  13
PPM 122048     06:11:13.1 +15:33:42  8.3  0.09  13
91205          06:11:28.1 +15:37:58 16.5        13
Positions are for J2000

Event circumstances last updated at 2023/01/16 03:14:51 UT

RECON