RECON: TNO occultation with 501581

Event between (501581) 14OB394 and star GA1000:00098455 with event index number of 2241364

Geocentric closest approach at 2026/11/08 06:43:17 UTC

J2000 position of star is 01:04:13.7 +11:48:26
Equinox of date position of star is 01:05:29.3 +11:56:07
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 35.0 AU from the Sun and 34.1 AU from the Earth.
Apparent velocity is 21.5 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 79 seconds.
The 1-sigma cross-track error in the shadow position is 1657 km.
The sky-plane scale is 24759.5 km/arcsec.

The object has an absolute magnitude Hv=6.3
Diameter=320.6 km assuming a 5% albedo -- 15.4 sec chord
Diameter=130.9 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 501581, (2026/11/08 06:44UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:37.3 +15:19:58  2.8 12.84 154
75 Psc         01:07:58.6 +13:05:57  6.1  1.28 166
PPM 117022     01:06:34.2 +11:27:32  8.2  0.54 165
PPM 117021     01:06:33.8 +11:49:16  9.5  0.26 165
501581         01:05:38.4 +11:57:03 16.1       166
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 25.7 km RECON observability=1.0 and success probability=0.1%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	06:41:41	-53.6	Dark	Down	50.0	197.6	Up	06:34:38 - 06:48:43	6596
Kelowna	06:41:38	-54.6	Dark	Down	50.6	199.3	Up	06:34:36 - 06:48:41	6506
Peachland	06:41:40	-54.6	Dark	Down	50.8	198.9	Up	06:34:37 - 06:48:42	6503
Summerland	06:41:39	-54.8	Dark	Down	50.9	199.1	Up	06:34:37 - 06:48:42	6488
Penticton	06:41:39	-54.9	Dark	Down	50.9	199.3	Up	06:34:36 - 06:48:41	6479
Victoria	06:41:52	-54.5	Dark	Down	52.6	193.7	Up	06:34:49 - 06:48:54	6475
Sleaford	06:40:58	-54.5	Dark	Down	44.7	216.7	Up	06:33:56 - 06:48:01	6457
Oliver	06:41:39	-55.2	Dark	Down	51.3	199.4	Up	06:34:37 - 06:48:42	6448
Anarchist Mountain Observatory	06:41:38	-55.4	Dark	Down	51.4	199.8	Up	06:34:36 - 06:48:41	6429
Okanogan	06:41:39	-55.9	Dark	Down	52.0	199.7	Up	06:34:37 - 06:48:42	6376
Brewster	06:41:41	-56.1	Dark	Down	52.3	199.5	Up	06:34:38 - 06:48:43	6356
Manson/Chelan	06:41:42	-56.2	Dark	Down	52.6	199.1	Up	06:34:40 - 06:48:45	6345
Wenatchee	06:41:43	-56.5	Dark	Down	53.1	199.0	Up	06:34:40 - 06:48:45	6306
Ellensburg	06:41:44	-56.8	Dark	Down	53.5	198.8	Up	06:34:41 - 06:48:46	6274
Yakima	06:41:44	-57.2	Dark	Down	53.9	199.0	Up	06:34:42 - 06:48:47	6237
Toppenish/White Swan	06:41:44	-57.4	Dark	Down	54.1	199.4	Up	06:34:42 - 06:48:47	6214
The Dalles	06:41:48	-57.8	Dark	Down	55.0	198.4	Up	06:34:45 - 06:48:50	6161
PNWRO	06:41:40	-58.2	Dark	Down	54.1	201.9	Up	06:34:37 - 06:48:42	6146
Maupin	06:41:47	-58.2	Dark	Down	55.4	198.8	Up	06:34:45 - 06:48:50	6120
Sisters	06:41:50	-58.8	Dark	Down	56.3	198.4	Up	06:34:47 - 06:48:52	6051
Bend	06:41:49	-59.1	Dark	Down	56.5	198.9	Up	06:34:46 - 06:48:51	6023
Oregon Observatory	06:41:49	-59.2	Dark	Down	56.7	198.8	Up	06:34:47 - 06:48:52	6010
Chiloquin	06:41:52	-60.1	Dark	Down	58.0	198.8	Up	06:34:50 - 06:48:55	5897
Klamath Falls	06:41:52	-60.4	Dark	Down	58.3	199.1	Up	06:34:50 - 06:48:55	5862
Cedarville	06:41:47	-61.7	Dark	Down	58.6	202.3	Up	06:34:45 - 06:48:50	5757
Fall River/Burney	06:41:51	-61.5	Dark	Down	59.3	200.4	Up	06:34:49 - 06:48:54	5741
Greenville	06:41:51	-62.5	Dark	Down	60.1	201.8	Up	06:34:49 - 06:48:54	5643
Gimple	06:41:51	-62.5	Dark	Down	60.0	202.0	Up	06:34:49 - 06:48:54	5640
Quincy	06:41:52	-62.6	Dark	Down	60.3	202.0	Up	06:34:49 - 06:48:54	5623
Portola	06:41:50	-63.0	Dark	Down	60.2	202.9	Up	06:34:47 - 06:48:52	5599
Reno	06:41:48	-63.5	Dark	Down	60.3	204.3	Up	06:34:45 - 06:48:50	5557
Carson City	06:41:48	-63.8	Dark	Down	60.6	204.6	Up	06:34:46 - 06:48:51	5521
Gardnerville	06:41:48	-64.0	Dark	Down	60.8	204.9	Up	06:34:45 - 06:48:50	5496
Yerington	06:41:46	-64.2	Dark	Down	60.6	206.0	Up	06:34:43 - 06:48:48	5486
Hawthorne	06:41:44	-64.8	Dark	Down	60.8	207.3	Up	06:34:42 - 06:48:47	5427
Lee Vining	06:41:47	-65.1	Dark	Down	61.5	206.9	Up	06:34:44 - 06:48:49	5384
Bishop	06:41:44	-65.9	Dark	Down	61.7	208.8	Up	06:34:42 - 06:48:47	5306
Dunrhomin	06:40:55	-66.3	Dark	Down	53.2	226.8	Up	06:33:52 - 06:47:57	5302
Nikitin	06:40:55	-66.5	Dark	Down	53.4	226.9	Up	06:33:53 - 06:47:58	5284
CU-SBO	06:40:55	-66.6	Dark	Down	53.4	226.9	Up	06:33:53 - 06:47:58	5279
Beatty	06:41:38	-67.0	Dark	Down	61.5	212.2	Up	06:34:36 - 06:48:41	5219
Patrick	06:41:28	-69.4	Dark	Down	61.4	218.9	Up	06:34:26 - 06:48:31	4997
Laughlin/Bullhead City	06:41:32	-69.3	Dark	Down	61.9	218.0	Up	06:34:29 - 06:48:34	4990
Wildwood	06:41:48	-68.4	Dark	Down	64.6	211.6	Up	06:34:46 - 06:48:51	4984
Lake Havasu City	06:41:31	-70.0	Dark	Down	62.3	219.2	Up	06:34:29 - 06:48:34	4915
Idyllwild	06:41:41	-69.6	Dark	Down	64.1	215.8	Up	06:34:39 - 06:48:44	4898
Calipatria	06:41:37	-70.7	Dark	Down	64.0	218.8	Up	06:34:35 - 06:48:40	4805
George/Scottsdale	06:41:22	-71.6	Dark	Down	61.5	224.4	Up	06:34:20 - 06:48:25	4775
Yuma	06:41:34	-71.5	Dark	Down	63.8	221.0	Up	06:34:32 - 06:48:37	4738

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 501581, (2026/11/08 06:44UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 12.84 154
75 Psc         01:06:33.7 +12:57:22  6.1  1.28 166
PPM 117022     01:05:09.6 +11:18:56  8.2  0.54 165
PPM 117021     01:05:09.1 +11:40:40  9.5  0.26 165
501581         01:04:13.7 +11:48:26 16.1       165
Positions are for J2000

Event circumstances last updated at 2023/12/23 04:22:22 UT

RECON