RECON: TNO occultation with 523789

Event between (523789) 15FN345 and star GA0940:04493784 with event index number of 2607090

Geocentric closest approach at 2024/08/16 03:39:14 UTC

J2000 position of star is 16:46:15.8 +05:33:07
Equinox of date position of star is 16:47:28.0 +05:30:34
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 42 degrees from the moon. Moon is 83% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 38.7 AU from the Sun and 38.5 AU from the Earth.
Apparent velocity is 12.9 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 111 seconds.
The 1-sigma cross-track error in the shadow position is 1894 km.
The sky-plane scale is 27887.8 km/arcsec.

The object has an absolute magnitude Hv=6.2
Diameter=340.4 km assuming a 5% albedo -- 27.1 sec chord
Diameter=139.0 km assuming a 30% albedo -- 11.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523789, (2024/08/16 03:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.3 -26:29:04  0.9 32.24  26
1Del Oph       16:15:38.3 -03:45:21  2.7 12.21  40
45 Her         16:48:59.3 +05:12:17  5.1  0.48  41
PPM 163163     16:50:42.9 +05:19:26  8.2  0.83  41
45 Her         16:48:59.3 +05:12:17  5.1  0.48  41
PPM 163096     16:47:43.8 +05:40:45 10.3  0.18  42
523789         16:47:28.5 +05:30:32 16.6        41
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 7.2 km RECON observability=0.1 and success probability=2.3%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Victoria	03:34:00	-1.9	CT	Up	46.9	185.2	Up	03:24:14 - 03:43:46	3394
Kamloops	03:33:42	-2.8	CT	Up	44.6	189.1	Up	03:23:56 - 03:43:28	3267
Peachland	03:33:45	-3.6	CT	Up	45.4	190.1	Up	03:23:59 - 03:43:31	3192
Summerland	03:33:44	-3.7	CT	Up	45.5	190.3	Up	03:23:58 - 03:43:30	3180
Kelowna	03:33:44	-3.7	CT	Up	45.3	190.5	Up	03:23:58 - 03:43:30	3177
Penticton	03:33:45	-3.8	CT	Up	45.6	190.5	Up	03:23:59 - 03:43:31	3170
Oliver	03:33:47	-3.9	CT	Up	45.9	190.5	Up	03:24:01 - 03:43:33	3156
Manson/Chelan	03:33:56	-4.2	CT	Up	47.3	190.0	Up	03:24:10 - 03:43:42	3147
Wenatchee	03:33:59	-4.3	CT	Up	47.8	189.8	Up	03:24:13 - 03:43:45	3140
Ellensburg	03:34:02	-4.3	CT	Up	48.2	189.6	Up	03:24:16 - 03:43:48	3139
Anarchist Mountain Observatory	03:33:47	-4.1	CT	Up	46.1	190.9	Up	03:24:01 - 03:43:33	3137
The Dalles	03:34:12	-4.5	CT	Up	49.6	189.0	Up	03:24:26 - 03:43:58	3131
Brewster	03:33:52	-4.3	CT	Up	47.0	190.5	Up	03:24:06 - 03:43:38	3129
Okanogan	03:33:51	-4.3	CT	Up	46.7	190.7	Up	03:24:05 - 03:43:37	3126
Yakima	03:34:01	-4.5	CT	Up	48.6	189.7	Up	03:24:15 - 03:43:47	3125
Sisters	03:34:20	-4.8	CT	Up	51.0	188.7	Up	03:24:34 - 03:44:06	3109
Maupin	03:34:13	-4.8	CT	Up	50.0	189.2	Up	03:24:27 - 03:43:59	3107
Toppenish/White Swan	03:34:04	-4.7	CT	Up	48.8	190.0	Up	03:24:18 - 03:43:50	3104
Oregon Observatory	03:34:21	-5.1	CT	Up	51.4	189.0	Up	03:24:35 - 03:44:07	3083
Bend	03:34:21	-5.1	CT	Up	51.2	189.1	Up	03:24:35 - 03:44:07	3081
Chiloquin	03:34:31	-5.4	CT	Up	52.7	188.6	Up	03:24:45 - 03:44:17	3064
Klamath Falls	03:34:32	-5.6	CT	Up	53.0	188.8	Up	03:24:46 - 03:44:18	3044
PNWRO	03:34:03	-5.8	CT	Up	48.9	192.3	Up	03:24:17 - 03:43:49	2983
Fall River/Burney	03:34:40	-6.4	NT	Up	54.1	189.8	Up	03:24:54 - 03:44:26	2968
Greenville	03:34:43	-7.1	NT	Up	55.0	190.8	Up	03:24:57 - 03:44:29	2897
Cedarville	03:34:34	-7.0	NT	Up	53.5	191.6	Up	03:24:48 - 03:44:20	2893
Gimple	03:34:44	-7.1	NT	Up	55.0	190.9	Up	03:24:58 - 03:44:30	2890
Quincy	03:34:45	-7.1	NT	Up	55.2	190.9	Up	03:24:59 - 03:44:31	2888
Portola	03:34:43	-7.5	NT	Up	55.2	191.7	Up	03:24:57 - 03:44:29	2845
Reno	03:34:44	-8.1	NT	Up	55.4	192.9	Up	03:24:58 - 03:44:30	2783
Carson City	03:34:47	-8.3	NT	Up	55.7	193.1	Up	03:25:01 - 03:44:33	2766
Gardnerville	03:34:48	-8.4	NT	Up	55.9	193.3	Up	03:25:02 - 03:44:34	2752
Yerington	03:34:47	-8.8	NT	Up	55.8	194.3	Up	03:25:01 - 03:44:33	2707
Lee Vining	03:34:53	-9.3	NT	Up	56.8	194.8	Up	03:25:07 - 03:44:39	2660
Hawthorne	03:34:48	-9.4	NT	Up	56.1	195.4	Up	03:25:02 - 03:44:34	2645
Bishop	03:34:56	-10.1	NT	Up	57.2	196.3	Up	03:25:10 - 03:44:42	2575
Wildwood	03:35:17	-11.4	NT	Up	60.3	197.7	Up	03:25:31 - 03:45:03	2446
Sleaford	03:33:05	-9.7	NT	Up	40.4	207.7	Up	03:23:19 - 03:42:51	2433
Beatty	03:34:53	-11.4	NT	Up	57.2	199.4	Up	03:25:07 - 03:44:39	2422
Idyllwild	03:35:14	-13.0	AT	Up	60.2	201.5	Up	03:25:28 - 03:45:00	2271
Laughlin/Bullhead City	03:35:00	-13.8	AT	Up	58.2	204.4	Up	03:25:14 - 03:44:46	2162
Calipatria	03:35:16	-14.1	AT	Up	60.3	204.2	Up	03:25:30 - 03:45:02	2142
Patrick	03:34:56	-14.2	AT	Up	57.7	205.4	Up	03:25:10 - 03:44:42	2116
Lake Havasu City	03:35:03	-14.3	AT	Up	58.7	205.3	Up	03:25:17 - 03:44:49	2108
Yuma	03:35:16	-15.0	AT	Up	60.4	206.2	Up	03:25:30 - 03:45:02	2046
George/Scottsdale	03:35:02	-16.5	AT	Up	58.4	210.3	Up	03:25:16 - 03:44:48	1866
Dunrhomin	03:34:05	-17.3	AT	Up	50.2	215.3	Up	03:24:19 - 03:43:51	1704
CU-SBO	03:34:06	-17.4	AT	Up	50.4	215.3	Up	03:24:20 - 03:43:52	1697
Nikitin	03:34:05	-17.4	AT	Up	50.3	215.4	Up	03:24:19 - 03:43:51	1695

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 523789, (2024/08/16 03:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 32.24  26
1Del Oph       16:14:20.7 -03:41:43  2.7 12.21  40
45 Her         16:47:46.4 +05:14:48  5.1  0.48  41
PPM 163163     16:49:30.1 +05:21:54  8.2  0.83  41
45 Her         16:47:46.4 +05:14:48  5.1  0.48  41
PPM 163096     16:46:31.2 +05:43:19 10.3  0.18  42
523789         16:46:15.8 +05:33:07 16.6        41
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:50:04 UT

RECON