RECON: TNO occultation with 470596

Event between (470596) 08NW4 and star GA0960:17169173 with event index number of 2270429

Geocentric closest approach at 2025/07/12 07:29:50 UTC

J2000 position of star is 22:04:05.6 +07:48:32
Equinox of date position of star is 22:05:16.7 +07:55:30
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 35 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=21.4

[RECON map]
Object is 36.6 AU from the Sun and 36.0 AU from the Earth.
Apparent velocity is 17.1 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 101 seconds.
The 1-sigma cross-track error in the shadow position is 1544 km.
The sky-plane scale is 26088.0 km/arcsec.

The object has an absolute magnitude Hv=5.7
Diameter=424.6 km assuming a 5% albedo -- 25.4 sec chord
Diameter=173.4 km assuming a 30% albedo -- 10.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 470596, (2025/07/12 07:33UT)
Object            RA         Dec     mag  sep  mel
Markab         23:06:02.1 +15:20:35  2.5 16.59  50
18 Peg         22:01:24.4 +06:50:27  5.8  1.47  34
PPM 172579     22:03:55.0 +08:38:18  8.4  0.79  36
PPM 172590     22:04:25.9 +08:08:03  8.8  0.31  35
PPM 172618     22:05:47.4 +07:52:58 11.2  0.12  35
470596         22:05:21.8 +07:56:01 15.4        36
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 33.3 km RECON observability=1.0 and success probability=0.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	07:32:25	-15.8	AT	Up	38.0	136.2	Up	07:23:30 - 07:41:20	6619
Kamloops	07:33:13	-17.0	AT	Up	31.9	120.5	Up	07:24:18 - 07:42:08	6509
Kelowna	07:33:13	-17.9	AT	Up	32.8	120.9	Up	07:24:18 - 07:42:08	6438
Peachland	07:33:14	-18.0	AT	Up	32.7	120.5	Up	07:24:19 - 07:42:09	6430
Summerland	07:33:14	-18.1	Dark	Up	32.8	120.5	Up	07:24:19 - 07:42:09	6417
Penticton	07:33:14	-18.2	Dark	Up	32.9	120.6	Up	07:24:19 - 07:42:09	6411
Oliver	07:33:16	-18.6	Dark	Up	33.1	120.4	Up	07:24:21 - 07:42:11	6380
Anarchist Mountain Observatory	07:33:16	-18.8	Dark	Up	33.3	120.5	Up	07:24:21 - 07:42:11	6366
Victoria	07:33:28	-18.8	Dark	Up	31.2	116.4	Up	07:24:33 - 07:42:23	6332
Okanogan	07:33:17	-19.4	Dark	Up	33.5	119.9	Up	07:24:22 - 07:42:12	6310
Brewster	07:33:19	-19.6	Dark	Up	33.5	119.6	Up	07:24:24 - 07:42:14	6286
Manson/Chelan	07:33:21	-19.8	Dark	Up	33.4	119.1	Up	07:24:26 - 07:42:16	6269
Wenatchee	07:33:23	-20.3	Dark	Up	33.5	118.7	Up	07:24:28 - 07:42:18	6227
Ellensburg	07:33:25	-20.6	Dark	Up	33.6	118.3	Up	07:24:30 - 07:42:20	6192
Yakima	07:33:26	-21.1	Dark	Up	33.8	118.0	Up	07:24:31 - 07:42:21	6155
Toppenish/White Swan	07:33:26	-21.3	Dark	Up	34.0	118.0	Up	07:24:31 - 07:42:21	6136
PNWRO	07:33:22	-21.8	Dark	Up	35.1	119.2	Up	07:24:27 - 07:42:17	6100
The Dalles	07:33:31	-22.0	Dark	Up	33.9	116.9	Up	07:24:36 - 07:42:26	6068
Maupin	07:33:32	-22.4	Dark	Up	34.1	116.7	Up	07:24:37 - 07:42:27	6030
Sisters	07:33:36	-23.2	Dark	Up	34.2	115.7	Up	07:24:41 - 07:42:31	5951
Bend	07:33:35	-23.5	Dark	Up	34.5	115.8	Up	07:24:40 - 07:42:30	5928
Oregon Observatory	07:33:37	-23.6	Dark	Up	34.5	115.6	Up	07:24:42 - 07:42:32	5913
Chiloquin	07:33:41	-24.9	Dark	Up	34.8	114.4	Up	07:24:46 - 07:42:36	5792
Klamath Falls	07:33:42	-25.2	Dark	Up	35.0	114.3	Up	07:24:47 - 07:42:37	5759
Cedarville	07:33:39	-26.1	Dark	Up	36.4	115.2	Up	07:24:44 - 07:42:34	5690
Fall River/Burney	07:33:44	-26.4	Dark	Up	35.7	113.9	Up	07:24:49 - 07:42:39	5647
Dunrhomin	07:32:46	-27.5	Dark	Up	46.5	129.3	Up	07:23:51 - 07:41:41	5560
Greenville	07:33:45	-27.4	Dark	Up	36.4	113.6	Up	07:24:50 - 07:42:40	5559
Gimple	07:33:45	-27.4	Dark	Up	36.5	113.7	Up	07:24:50 - 07:42:40	5559
Nikitin	07:32:46	-27.7	Dark	Up	46.6	129.1	Up	07:23:51 - 07:41:41	5543
Quincy	07:33:46	-27.6	Dark	Up	36.5	113.5	Up	07:24:51 - 07:42:41	5540
CU-SBO	07:32:46	-27.8	Dark	Up	46.6	129.0	Up	07:23:51 - 07:41:41	5536
Portola	07:33:45	-27.8	Dark	Up	36.9	113.8	Up	07:24:50 - 07:42:40	5527
Reno	07:33:44	-28.1	Dark	Up	37.4	114.2	Up	07:24:49 - 07:42:39	5499
Carson City	07:33:43	-28.5	Dark	Up	37.6	114.0	Up	07:24:48 - 07:42:38	5465
Yerington	07:33:41	-28.7	Dark	Up	38.1	114.4	Up	07:24:46 - 07:42:36	5444
Gardnerville	07:33:44	-28.7	Dark	Up	37.7	113.9	Up	07:24:49 - 07:42:39	5441
Hawthorne	07:33:41	-29.2	Dark	Up	38.7	114.5	Up	07:24:46 - 07:42:36	5398
Lee Vining	07:33:44	-29.8	Dark	Up	38.6	113.7	Up	07:24:49 - 07:42:39	5344
Bishop	07:33:42	-30.4	Dark	Up	39.3	113.9	Up	07:24:47 - 07:42:37	5283
Beatty	07:33:37	-31.0	Dark	Up	40.7	115.0	Up	07:24:42 - 07:42:32	5235
Patrick	07:33:29	-32.6	Dark	Up	43.4	116.3	Up	07:24:34 - 07:42:24	5083
Laughlin/Bullhead City	07:33:32	-32.9	Dark	Up	43.0	115.5	Up	07:24:37 - 07:42:27	5058
Lake Havasu City	07:33:33	-33.5	Dark	Up	43.5	115.2	Up	07:24:38 - 07:42:28	4990
Wildwood	07:33:50	-33.6	Dark	Up	40.5	111.2	Up	07:24:55 - 07:42:45	4957
Idyllwild	07:33:44	-34.2	Dark	Up	42.0	112.5	Up	07:24:49 - 07:42:39	4917
George/Scottsdale	07:33:24	-34.4	Dark	Up	45.7	116.7	Up	07:24:29 - 07:42:19	4910
Calipatria	07:33:40	-34.9	Dark	Up	43.2	112.9	Up	07:24:45 - 07:42:35	4853
Yuma	07:33:37	-35.3	Dark	Up	44.0	113.3	Up	07:24:42 - 07:42:32	4807

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 470596, (2025/07/12 07:33UT)
Object            RA         Dec     mag  sep  mel
Markab         23:04:45.8 +15:12:18  2.5 16.59  50
18 Peg         22:00:07.9 +06:43:03  5.8  1.47  34
PPM 172579     22:02:39.0 +08:30:51  8.4  0.79  36
PPM 172590     22:03:09.8 +08:00:35  8.8  0.31  35
PPM 172618     22:04:31.2 +07:45:30 11.2  0.12  35
470596         22:04:05.6 +07:48:32 15.4        35
Positions are for J2000

Event circumstances last updated at 2023/10/24 02:41:48 UT

RECON