RECON: TNO occultation with 523749

Event between (523749) 14UR224 and star GA1100:00808993 with event index number of 2372540

Geocentric closest approach at 2023/01/06 02:10:41 UTC

J2000 position of star is 04:57:12.3 +20:23:24
Equinox of date position of star is 04:58:34.0 +20:25:28
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 22 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 39.5 AU from the Sun and 38.7 AU from the Earth.
Apparent velocity is 21.1 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 89 seconds.
The 1-sigma cross-track error in the shadow position is 1431 km.
The sky-plane scale is 28035.5 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 21.7 sec chord
Diameter=186.6 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523749, (2023/01/06 02:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.6 +16:33:13  0.8  6.37  28
Alnath         05:27:44.9 +28:37:29  1.6 10.54  13
102Iot Tau     05:04:28.4 +21:37:15  4.6  1.82  20
PPM 093957     05:01:36.0 +20:57:37  8.4  0.89  21
PPM 093926     04:59:25.3 +20:20:50  9.4  0.21  21
523749         04:58:34.1 +20:25:28 16.8        21
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 26.6 km RECON observability=1.0 and success probability=0.2%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	02:12:59	-18.2	Dark	Up	37.0	103.4	Up	02:05:02 - 02:20:56	7623
Victoria	02:13:13	-15.7	AT	Up	35.5	99.3	Up	02:05:16 - 02:21:10	7541
Kelowna	02:13:01	-18.5	Dark	Up	37.7	103.6	Up	02:05:04 - 02:20:58	7540
Peachland	02:13:01	-18.3	Dark	Up	37.6	103.2	Up	02:05:04 - 02:20:58	7539
Summerland	02:13:02	-18.4	Dark	Up	37.7	103.2	Up	02:05:05 - 02:20:59	7525
Penticton	02:13:02	-18.4	Dark	Up	37.8	103.2	Up	02:05:05 - 02:20:59	7517
Oliver	02:13:03	-18.3	Dark	Up	37.8	103.0	Up	02:05:06 - 02:21:00	7491
Anarchist Mountain Observatory	02:13:04	-18.4	Dark	Up	38.0	103.0	Up	02:05:07 - 02:21:01	7473
Okanogan	02:13:06	-18.1	Dark	Up	38.0	102.3	Up	02:05:09 - 02:21:03	7429
Brewster	02:13:08	-17.9	AT	Up	37.9	102.0	Up	02:05:11 - 02:21:05	7413
Manson/Chelan	02:13:09	-17.7	AT	Up	37.7	101.5	Up	02:05:12 - 02:21:06	7407
Sleaford	02:12:18	-27.2	Dark	Up	44.8	118.4	Up	02:04:21 - 02:20:15	7392
Wenatchee	02:13:12	-17.4	AT	Up	37.7	101.0	Up	02:05:15 - 02:21:09	7374
Ellensburg	02:13:14	-17.2	AT	Up	37.7	100.5	Up	02:05:17 - 02:21:11	7348
Yakima	02:13:15	-17.1	AT	Up	37.7	100.2	Up	02:05:18 - 02:21:12	7317
Toppenish/White Swan	02:13:15	-17.1	AT	Up	37.9	100.2	Up	02:05:18 - 02:21:12	7295
The Dalles	02:13:20	-16.4	AT	Up	37.5	98.9	Up	02:05:23 - 02:21:17	7255
PNWRO	02:13:14	-18.0	Dark	Up	39.0	101.1	Up	02:05:17 - 02:21:11	7225
Maupin	02:13:21	-16.4	AT	Up	37.6	98.7	Up	02:05:24 - 02:21:18	7219
Sisters	02:13:24	-15.8	AT	Up	37.4	97.7	Up	02:05:27 - 02:21:21	7162
Bend	02:13:25	-15.9	AT	Up	37.6	97.7	Up	02:05:28 - 02:21:22	7136
Oregon Observatory	02:13:26	-15.8	AT	Up	37.6	97.5	Up	02:05:29 - 02:21:23	7125
Chiloquin	02:13:32	-15.1	AT	Up	37.4	96.2	Up	02:05:35 - 02:21:29	7029
Klamath Falls	02:13:32	-15.1	AT	Up	37.5	96.0	Up	02:05:35 - 02:21:29	6998
Cedarville	02:13:32	-16.0	AT	Up	38.8	96.6	Up	02:05:35 - 02:21:29	6893
Fall River/Burney	02:13:36	-15.0	AT	Up	37.9	95.3	Up	02:05:39 - 02:21:33	6888
Greenville	02:13:38	-15.1	AT	Up	38.4	95.0	Up	02:05:41 - 02:21:35	6798
Gimple	02:13:38	-15.2	AT	Up	38.4	95.0	Up	02:05:41 - 02:21:35	6795
Quincy	02:13:38	-15.0	AT	Up	38.4	94.8	Up	02:05:41 - 02:21:35	6780
Portola	02:13:38	-15.4	AT	Up	38.8	95.0	Up	02:05:41 - 02:21:35	6755
Reno	02:13:37	-15.8	AT	Up	39.3	95.3	Up	02:05:40 - 02:21:34	6712
Carson City	02:13:39	-15.7	AT	Up	39.3	95.0	Up	02:05:42 - 02:21:36	6680
Gardnerville	02:13:39	-15.6	AT	Up	39.4	94.8	Up	02:05:42 - 02:21:36	6658
Yerington	02:13:38	-16.1	AT	Up	39.9	95.3	Up	02:05:41 - 02:21:35	6644
Hawthorne	02:13:39	-16.4	AT	Up	40.3	95.2	Up	02:05:42 - 02:21:36	6587
Lee Vining	02:13:40	-15.8	AT	Up	40.0	94.4	Up	02:05:43 - 02:21:37	6553
Bishop	02:13:42	-16.2	AT	Up	40.6	94.4	Up	02:05:45 - 02:21:39	6477
Beatty	02:13:39	-17.3	AT	Up	41.9	95.1	Up	02:05:42 - 02:21:36	6384
Dunrhomin	02:12:58	-26.8	Dark	Up	50.0	107.4	Up	02:05:01 - 02:20:55	6355
Nikitin	02:12:59	-26.7	Dark	Up	50.1	107.2	Up	02:05:02 - 02:20:56	6338
CU-SBO	02:12:59	-26.7	Dark	Up	50.1	107.1	Up	02:05:02 - 02:20:56	6335
Wildwood	02:13:52	-15.2	AT	Up	40.6	91.5	Up	02:05:55 - 02:21:49	6186
Patrick	02:13:36	-19.2	Dark	Up	44.4	95.6	Up	02:05:39 - 02:21:33	6158
Laughlin/Bullhead City	02:13:39	-18.6	Dark	Up	43.8	94.9	Up	02:05:42 - 02:21:36	6157
Idyllwild	02:13:48	-16.5	AT	Up	42.2	92.3	Up	02:05:51 - 02:21:45	6092
Lake Havasu City	02:13:40	-18.6	Dark	Up	44.1	94.4	Up	02:05:43 - 02:21:37	6087
Calipatria	02:13:47	-17.3	AT	Up	43.2	92.4	Up	02:05:50 - 02:21:44	5996
George/Scottsdale	02:13:36	-20.4	Dark	Up	46.2	95.2	Up	02:05:39 - 02:21:33	5937
Yuma	02:13:46	-17.9	AT	Up	44.0	92.5	Up	02:05:49 - 02:21:43	5927

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 523749, (2023/01/06 02:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  6.37  28
Alnath         05:26:17.6 +28:36:23  1.6 10.54  13
102Iot Tau     05:03:05.8 +21:35:23  4.6  1.82  20
PPM 093957     05:00:13.9 +20:55:40  8.4  0.89  21
PPM 093926     04:58:03.5 +20:18:48  9.4  0.21  21
523749         04:57:12.3 +20:23:24 16.8        22
Positions are for J2000

Event circumstances last updated at 2022/12/24 03:39:03 UT

RECON