RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA1260:03009161 with event index number of 2655329

Geocentric closest approach at 2025/01/30 01:52:43 UTC

J2000 position of star is 06:57:35.7 +36:31:56
Equinox of date position of star is 06:59:14.3 +36:29:53
Stellar brightness G=12.0, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 143 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=17.9

[RECON map]
Object is 8.8 AU from the Sun and 8.0 AU from the Earth.
Apparent velocity is 37.8 km/sec on the sky relative to the star, or, 23.5 arcsec/hr.
The 1-sigma error in the time of the event is 9 seconds.
The 1-sigma cross-track error in the shadow position is 435 km.
The sky-plane scale is 5785.4 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=128.2 km assuming a 5% albedo -- 3.5 sec chord
Diameter=52.4 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2025/01/30 01:52UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:51.0 +27:57:49  1.1 13.17 155
62 Aur         07:00:45.2 +38:00:56  6.0  1.55 143
PPM 072284     07:00:01.6 +36:50:29  8.5  0.38 143
PPM 072248     06:57:50.0 +36:41:31  8.7  0.35 143
PPM 072267     06:59:00.6 +36:24:59 11.0  0.10 143
468861         06:59:16.8 +36:29:49 12.0       144
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 12.6 km RECON observability=0.1 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)
Victoria	01:54:02	-7.9	NT	Down	39.1	76.1	Up	01:52:49 - 01:55:15	2697
Kamloops	01:53:55	-10.3	NT	Down	41.4	79.9	Up	01:52:42 - 01:55:08	2666
Peachland	01:53:57	-10.5	NT	Down	41.6	79.5	Up	01:52:44 - 01:55:10	2591
Kelowna	01:53:57	-10.7	NT	Down	41.9	79.8	Up	01:52:44 - 01:55:10	2583
Summerland	01:53:57	-10.5	NT	Down	41.7	79.4	Up	01:52:44 - 01:55:10	2579
Penticton	01:53:57	-10.6	NT	Down	41.7	79.4	Up	01:52:44 - 01:55:10	2570
Oliver	01:53:58	-10.5	NT	Down	41.7	79.1	Up	01:52:45 - 01:55:11	2551
Anarchist Mountain Observatory	01:53:59	-10.5	NT	Down	41.8	79.1	Up	01:52:46 - 01:55:12	2533
Manson/Chelan	01:54:02	-9.8	NT	Down	41.0	77.6	Up	01:52:49 - 01:55:15	2510
Okanogan	01:54:01	-10.2	NT	Down	41.5	78.4	Up	01:52:48 - 01:55:14	2509
Brewster	01:54:01	-10.0	NT	Down	41.3	78.1	Up	01:52:48 - 01:55:14	2503
Wenatchee	01:54:03	-9.5	NT	Down	40.8	77.1	Up	01:52:50 - 01:55:16	2492
Ellensburg	01:54:04	-9.3	NT	Down	40.6	76.7	Up	01:52:51 - 01:55:17	2480
Yakima	01:54:06	-9.1	NT	Down	40.5	76.3	Up	01:52:53 - 01:55:19	2458
Toppenish/White Swan	01:54:06	-9.2	NT	Down	40.6	76.2	Up	01:52:53 - 01:55:19	2438
The Dalles	01:54:08	-8.5	NT	Down	39.8	75.2	Up	01:52:55 - 01:55:21	2434
Maupin	01:54:09	-8.4	NT	Down	39.8	74.9	Up	01:52:56 - 01:55:22	2405
Sisters	01:54:12	-7.8	NT	Down	39.2	73.9	Up	01:52:59 - 01:55:25	2380
Bend	01:54:12	-7.9	NT	Down	39.3	73.9	Up	01:52:59 - 01:55:25	2353
Oregon Observatory	01:54:13	-7.8	NT	Down	39.2	73.7	Up	01:53:00 - 01:55:26	2350
PNWRO	01:54:06	-10.1	NT	Down	41.5	76.8	Up	01:52:53 - 01:55:19	2343
Chiloquin	01:54:16	-7.1	NT	Down	38.5	72.4	Up	01:53:03 - 01:55:29	2295
Klamath Falls	01:54:17	-7.1	NT	Down	38.5	72.2	Up	01:53:04 - 01:55:30	2270
Fall River/Burney	01:54:19	-7.0	NT	Down	38.4	71.5	Up	01:53:06 - 01:55:32	2179
Cedarville	01:54:18	-8.0	NT	Down	39.4	72.5	Up	01:53:05 - 01:55:31	2144
Sleaford	01:53:43	-19.4	Dark	Down	50.5	91.9	Up	01:52:30 - 01:54:56	2107
Greenville	01:54:21	-7.1	NT	Down	38.4	71.0	Up	01:53:08 - 01:55:34	2099
Gimple	01:54:21	-7.1	NT	Down	38.5	71.1	Up	01:53:08 - 01:55:34	2095
Quincy	01:54:22	-7.0	NT	Down	38.4	70.9	Up	01:53:09 - 01:55:35	2087
Portola	01:54:22	-7.3	NT	Down	38.7	71.0	Up	01:53:09 - 01:55:35	2053
Reno	01:54:22	-7.7	NT	Down	39.1	71.1	Up	01:53:09 - 01:55:35	2001
Carson City	01:54:23	-7.7	NT	Down	39.0	70.8	Up	01:53:10 - 01:55:36	1976
Gardnerville	01:54:23	-7.6	NT	Down	38.9	70.7	Up	01:53:10 - 01:55:36	1958
Yerington	01:54:23	-8.1	NT	Down	39.4	71.0	Up	01:53:10 - 01:55:36	1929
Hawthorne	01:54:24	-8.3	NT	Down	39.6	70.8	Up	01:53:11 - 01:55:37	1869
Lee Vining	01:54:25	-7.8	NT	Down	39.1	70.2	Up	01:53:12 - 01:55:38	1860
Bishop	01:54:26	-8.2	NT	Down	39.4	70.0	Up	01:53:13 - 01:55:39	1779
Beatty	01:54:26	-9.4	NT	Down	40.5	70.3	Up	01:53:13 - 01:55:39	1655
Wildwood	01:54:33	-7.2	NT	Down	38.1	67.5	Up	01:53:20 - 01:55:46	1568
Idyllwild	01:54:33	-8.6	NT	Down	39.4	67.8	Up	01:53:20 - 01:55:46	1431
Laughlin/Bullhead City	01:54:28	-10.6	NT	Down	41.6	69.6	Up	01:53:15 - 01:55:41	1408
Patrick	01:54:27	-11.2	NT	Down	42.2	70.0	Up	01:53:14 - 01:55:40	1385
Lake Havasu City	01:54:29	-10.7	NT	Down	41.5	69.1	Up	01:53:16 - 01:55:42	1345
Calipatria	01:54:33	-9.4	NT	Down	40.1	67.7	Up	01:53:20 - 01:55:46	1317
Dunrhomin	01:54:09	-18.8	Dark	Down	50.1	78.2	Up	01:52:56 - 01:55:22	1255
Nikitin	01:54:10	-18.8	Dark	Down	50.0	78.0	Up	01:52:57 - 01:55:23	1242
CU-SBO	01:54:10	-18.7	Dark	Down	49.9	77.9	Up	01:52:57 - 01:55:23	1242
Yuma	01:54:33	-10.0	NT	Down	40.6	67.6	Up	01:53:20 - 01:55:46	1232
George/Scottsdale	01:54:29	-12.5	AT	Down	43.2	69.2	Up	01:53:16 - 01:55:42	1143

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 468861, (2025/01/30 01:52UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 13.17 155
62 Aur         06:59:02.8 +38:03:06  6.0  1.55 143
PPM 072284     06:58:20.2 +36:52:37  8.5  0.38 143
PPM 072248     06:56:08.7 +36:43:35  8.7  0.35 143
PPM 072267     06:57:19.6 +36:27:05 11.0  0.10 143
468861         06:57:35.7 +36:31:56 12.0       143
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:42:50 UT

RECON