RECON: TNO occultation with 26308

Event between (26308) 98SM165 and star GA0980:00323567 with event index number of 1758050

Geocentric closest approach at 2027/10/05 10:44:53 UTC

J2000 position of star is 03:41:41.6 +08:35:49
Equinox of date position of star is 03:42:59.2 +08:40:20
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 152 degrees from the moon. Moon is 31% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 44.2 AU from the Sun and 43.5 AU from the Earth.
Apparent velocity is 18.2 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is 1996 km.
The sky-plane scale is 31549.1 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=415.0 km assuming a 5% albedo -- 23.1 sec chord
Diameter=169.4 km assuming a 30% albedo -- 9.4 sec chord
Dynamical classification is 2:1E+6:3EII
 
 
 
 
 
 

Star training set for 26308, (2027/10/05 10:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.0 +16:33:47  0.8 15.41 167
Menkar         03:03:44.1 +04:11:49  2.5 10.78 142
6 Tau          03:34:06.2 +09:27:55  5.6  2.38 151
PPM 146841     03:44:07.3 +08:43:16  7.7  0.23 152
26308          03:43:11.7 +08:41:04 16.0       152
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 29.3 km RECON observability=1.0 and success probability=17.2%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	10:43:13	-31.6	Dark	Down	47.9	178.4	Up	10:29:20 - 10:57:07	3152
Victoria	10:43:29	-34.4	Dark	Down	49.9	173.7	Up	10:29:36 - 10:57:23	3095
Peachland	10:43:13	-31.8	Dark	Down	48.8	179.3	Up	10:29:20 - 10:57:07	3065
Kelowna	10:43:13	-31.6	Dark	Down	48.7	179.7	Up	10:29:19 - 10:57:06	3063
Summerland	10:43:13	-31.8	Dark	Down	49.0	179.4	Up	10:29:20 - 10:57:07	3051
Penticton	10:43:14	-31.8	Dark	Down	49.1	179.6	Up	10:29:20 - 10:57:07	3042
Oliver	10:43:14	-32.0	Dark	Down	49.4	179.6	Up	10:29:21 - 10:57:08	3015
Anarchist Mountain Observatory	10:43:14	-32.0	Dark	Down	49.6	179.9	Up	10:29:20 - 10:57:07	2996
Okanogan	10:43:16	-32.5	Dark	Down	50.2	179.5	Up	10:29:22 - 10:57:09	2955
Brewster	10:43:17	-32.8	Dark	Down	50.5	179.2	Up	10:29:23 - 10:57:10	2941
Manson/Chelan	10:43:19	-33.1	Dark	Down	50.7	178.6	Up	10:29:25 - 10:57:12	2937
Wenatchee	10:43:20	-33.4	Dark	Down	51.2	178.4	Up	10:29:27 - 10:57:14	2907
Ellensburg	10:43:22	-33.8	Dark	Down	51.6	178.0	Up	10:29:29 - 10:57:16	2882
Yakima	10:43:23	-34.0	Dark	Down	52.0	178.0	Up	10:29:30 - 10:57:17	2852
Toppenish/White Swan	10:43:24	-34.1	Dark	Down	52.2	178.3	Up	10:29:30 - 10:57:17	2829
Sleaford	10:42:23	-23.2	Dark	Down	45.2	198.6	Up	10:28:29 - 10:56:16	2826
The Dalles	10:43:28	-34.9	Dark	Down	53.0	176.9	Up	10:29:35 - 10:57:22	2796
Maupin	10:43:29	-35.1	Dark	Down	53.4	177.1	Up	10:29:35 - 10:57:22	2760
PNWRO	10:43:19	-33.4	Dark	Down	52.6	180.6	Up	10:29:25 - 10:57:12	2748
Sisters	10:43:33	-35.9	Dark	Down	54.2	176.2	Up	10:29:39 - 10:57:26	2708
Bend	10:43:32	-35.9	Dark	Down	54.5	176.6	Up	10:29:39 - 10:57:26	2680
Oregon Observatory	10:43:32	-36.0	Dark	Down	54.7	176.4	Up	10:29:39 - 10:57:26	2671
Chiloquin	10:43:38	-37.0	Dark	Down	56.0	175.6	Up	10:29:44 - 10:57:31	2581
Klamath Falls	10:43:38	-37.1	Dark	Down	56.3	175.7	Up	10:29:44 - 10:57:31	2550
Fall River/Burney	10:43:40	-37.5	Dark	Down	57.5	176.3	Up	10:29:46 - 10:57:33	2439
Cedarville	10:43:34	-36.5	Dark	Down	57.1	178.5	Up	10:29:40 - 10:57:27	2433
Greenville	10:43:40	-37.7	Dark	Down	58.4	177.0	Up	10:29:47 - 10:57:34	2346
Gimple	10:43:39	-37.7	Dark	Down	58.4	177.2	Up	10:29:46 - 10:57:33	2343
Quincy	10:43:40	-37.8	Dark	Down	58.6	177.0	Up	10:29:47 - 10:57:34	2329
Portola	10:43:39	-37.6	Dark	Down	58.8	177.9	Up	10:29:45 - 10:57:32	2300
Reno	10:43:37	-37.3	Dark	Down	59.0	179.1	Up	10:29:43 - 10:57:30	2253
Carson City	10:43:37	-37.4	Dark	Down	59.4	179.2	Up	10:29:44 - 10:57:31	2221
Gardnerville	10:43:38	-37.5	Dark	Down	59.7	179.3	Up	10:29:44 - 10:57:31	2199
Yerington	10:43:35	-37.1	Dark	Down	59.6	180.4	Up	10:29:42 - 10:57:29	2180
Hawthorne	10:43:34	-37.0	Dark	Down	60.1	181.4	Up	10:29:40 - 10:57:27	2119
Lee Vining	10:43:37	-37.6	Dark	Down	60.6	180.5	Up	10:29:44 - 10:57:31	2090
Bishop	10:43:36	-37.3	Dark	Down	61.2	182.0	Up	10:29:42 - 10:57:29	2009
Beatty	10:43:30	-36.4	Dark	Down	61.6	185.4	Up	10:29:37 - 10:57:24	1904
Dunrhomin	10:42:35	-26.9	Dark	Down	56.0	205.2	Up	10:28:41 - 10:56:28	1778
Nikitin	10:42:35	-27.0	Dark	Down	56.2	205.3	Up	10:28:42 - 10:56:29	1762
CU-SBO	10:42:36	-27.0	Dark	Down	56.3	205.2	Up	10:28:42 - 10:56:29	1758
Wildwood	10:43:45	-38.9	Dark	Down	64.5	181.8	Up	10:29:51 - 10:57:38	1727
Laughlin/Bullhead City	10:43:24	-35.5	Dark	Down	63.1	190.4	Up	10:29:31 - 10:57:18	1661
Patrick	10:43:20	-34.9	Dark	Down	62.7	191.8	Up	10:29:27 - 10:57:14	1656
Idyllwild	10:43:37	-37.6	Dark	Down	64.7	186.2	Up	10:29:43 - 10:57:30	1618
Lake Havasu City	10:43:25	-35.5	Dark	Down	63.7	191.2	Up	10:29:31 - 10:57:18	1590
Calipatria	10:43:33	-36.9	Dark	Down	65.2	189.1	Up	10:29:39 - 10:57:26	1513
Yuma	10:43:30	-36.4	Dark	Down	65.5	191.3	Up	10:29:36 - 10:57:23	1436
George/Scottsdale	10:43:15	-33.9	Dark	Down	64.0	196.9	Up	10:29:21 - 10:57:08	1420

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 26308, (2027/10/05 10:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 15.41 167
Menkar         03:02:16.8 +04:05:21  2.5 10.78 142
6 Tau          03:32:35.9 +09:22:23  5.6  2.38 151
PPM 146841     03:42:37.2 +08:38:04  7.7  0.23 152
26308          03:41:41.6 +08:35:49 16.0       152
Positions are for J2000

Event circumstances last updated at 2023/11/27 04:18:41 UT

RECON