RECON: TNO occultation with 148780

Event between (148780) Altjira and star GA1180:01371569 with event index number of 1467907

Geocentric closest approach at 2025/10/30 05:10:35 UTC

J2000 position of star is 05:20:40.3 +28:19:10
Equinox of date position of star is 05:22:07.3 +28:20:27
Stellar brightness G=13.7, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 128 degrees from the moon. Moon is 56% illuminated.
Apparent brightness V=22.5

[RECON map]
Object is 46.2 AU from the Sun and 45.5 AU from the Earth.
Apparent velocity is 17.5 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 818 seconds.
The 1-sigma cross-track error in the shadow position is 2268 km.
The sky-plane scale is 33026.5 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 24.2 sec chord
Diameter=170.2 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 148780, (2025/10/30 05:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:24.3 +16:33:33  0.8 15.68 116
Alnath         05:27:55.6 +28:37:37  1.6  1.27 129
PPM 094294     05:22:36.8 +27:58:51  6.3  0.37 128
PPM 094295     05:22:39.6 +28:09:23  9.6  0.20 128
148780         05:22:18.1 +28:20:36 13.7       128
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 1.1 sigma about the mid-time.
The median site spacing is 28.2 km RECON observability=1.0 and success probability=16.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	05:14:36	-42.3	Dark	Up	25.7	75.9	Low	04:59:36 - 05:29:36	3278
Victoria	05:14:47	-41.9	Dark	Up	23.3	72.9	Low	04:59:47 - 05:29:47	3227
Peachland	05:14:41	-43.1	Dark	Up	25.9	75.9	Low	04:59:41 - 05:29:41	3191
Kelowna	05:14:40	-43.2	Dark	Up	26.1	76.2	Low	04:59:40 - 05:29:40	3189
Summerland	05:14:40	-43.3	Dark	Up	25.9	75.9	Low	04:59:40 - 05:29:40	3177
Penticton	05:14:41	-43.4	Dark	Up	26.0	76.0	Low	04:59:41 - 05:29:41	3169
Oliver	05:14:43	-43.6	Dark	Up	25.9	75.8	Low	04:59:43 - 05:29:43	3143
Anarchist Mountain Observatory	05:14:43	-43.8	Dark	Up	26.0	75.9	Low	04:59:43 - 05:29:43	3124
Okanogan	05:14:46	-44.1	Dark	Up	25.7	75.4	Low	04:59:46 - 05:29:46	3083
Brewster	05:14:48	-44.1	Dark	Up	25.5	75.2	Low	04:59:48 - 05:29:48	3070
Manson/Chelan	05:14:49	-44.0	Dark	Up	25.2	74.8	Low	04:59:49 - 05:29:49	3067
Wenatchee	05:14:51	-44.2	Dark	Up	25.0	74.5	Low	04:59:51 - 05:29:51	3038
Ellensburg	05:14:53	-44.3	Dark	Up	24.7	74.2	Low	04:59:53 - 05:29:53	3014
Yakima	05:14:55	-44.6	Dark	Up	24.6	74.0	Low	04:59:55 - 05:29:55	2984
Toppenish/White Swan	05:14:56	-44.8	Dark	Up	24.6	74.0	Low	04:59:56 - 05:29:56	2962
Sleaford	05:14:15	-47.5	Dark	Up	34.8	87.2	Up	04:59:15 - 05:29:15	2934
The Dalles	05:15:00	-44.7	Dark	Up	23.9	73.2	Low	05:00:00 - 05:30:00	2931
Maupin	05:15:01	-45.0	Dark	Up	23.9	73.1	Low	05:00:01 - 05:30:01	2895
PNWRO	05:14:57	-45.8	Dark	Up	25.5	74.8	Low	04:59:57 - 05:29:57	2880
Sisters	05:15:06	-45.2	Dark	Up	23.3	72.4	Low	05:00:06 - 05:30:06	2846
Bend	05:15:06	-45.5	Dark	Up	23.4	72.5	Low	05:00:06 - 05:30:06	2817
Oregon Observatory	05:15:07	-45.5	Dark	Up	23.2	72.3	Low	05:00:07 - 05:30:07	2809
Chiloquin	05:15:13	-45.9	Dark	Up	22.6	71.6	Low	05:00:13 - 05:30:13	2721
Klamath Falls	05:15:14	-46.1	Dark	Up	22.5	71.5	Low	05:00:14 - 05:30:14	2691
Fall River/Burney	05:15:19	-46.9	Dark	Up	22.4	71.3	Low	05:00:19 - 05:30:19	2581
Cedarville	05:15:16	-47.5	Dark	Up	23.4	72.1	Low	05:00:16 - 05:30:16	2573
Greenville	05:15:22	-47.7	Dark	Up	22.5	71.2	Low	05:00:22 - 05:30:22	2489
Gimple	05:15:22	-47.7	Dark	Up	22.5	71.2	Low	05:00:22 - 05:30:22	2486
Quincy	05:15:22	-47.8	Dark	Up	22.4	71.1	Low	05:00:22 - 05:30:22	2473
Portola	05:15:23	-48.1	Dark	Up	22.7	71.3	Low	05:00:23 - 05:30:23	2443
Reno	05:15:23	-48.7	Dark	Up	23.1	71.5	Low	05:00:23 - 05:30:23	2395
Carson City	05:15:25	-48.9	Dark	Up	23.0	71.4	Low	05:00:25 - 05:30:25	2364
Gardnerville	05:15:26	-49.0	Dark	Up	23.0	71.3	Low	05:00:26 - 05:30:26	2342
Yerington	05:15:25	-49.4	Dark	Up	23.4	71.7	Low	05:00:25 - 05:30:25	2323
Hawthorne	05:15:26	-50.0	Dark	Up	23.7	71.8	Low	05:00:26 - 05:30:26	2262
Lee Vining	05:15:29	-49.9	Dark	Up	23.1	71.3	Low	05:00:29 - 05:30:29	2234
Bishop	05:15:30	-50.7	Dark	Up	23.5	71.4	Low	05:00:30 - 05:30:30	2153
Beatty	05:15:30	-52.1	Dark	Up	24.6	72.0	Low	05:00:30 - 05:30:30	2046
Dunrhomin	05:15:01	-57.2	Dark	Up	34.1	79.8	Up	05:00:01 - 05:30:01	1900
Nikitin	05:15:02	-57.3	Dark	Up	34.0	79.6	Up	05:00:02 - 05:30:02	1885
CU-SBO	05:15:02	-57.3	Dark	Up	34.0	79.6	Up	05:00:02 - 05:30:02	1881
Wildwood	05:15:41	-52.0	Dark	Up	22.3	70.0	Low	05:00:41 - 05:30:41	1876
Laughlin/Bullhead City	05:15:33	-54.5	Dark	Up	25.7	72.3	Low	05:00:33 - 05:30:33	1803
Patrick	05:15:32	-54.9	Dark	Up	26.4	72.7	Low	05:00:32 - 05:30:32	1796
Idyllwild	05:15:41	-53.6	Dark	Up	23.6	70.7	Low	05:00:41 - 05:30:41	1764
Lake Havasu City	05:15:35	-55.0	Dark	Up	25.7	72.1	Low	05:00:35 - 05:30:35	1732
Calipatria	05:15:41	-54.7	Dark	Up	24.4	71.0	Low	05:00:41 - 05:30:41	1658
Yuma	05:15:42	-55.6	Dark	Up	24.9	71.1	Low	05:00:42 - 05:30:42	1581
George/Scottsdale	05:15:34	-57.2	Dark	Up	27.4	72.8	Low	05:00:34 - 05:30:34	1559

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 148780, (2025/10/30 05:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 15.68 116
Alnath         05:26:17.6 +28:36:23  1.6  1.27 129
PPM 094294     05:20:59.3 +27:57:25  6.3  0.37 128
PPM 094295     05:21:02.0 +28:07:57  9.6  0.20 128
148780         05:20:40.3 +28:19:10 13.7       128
Positions are for J2000

Event circumstances last updated at 2022/12/25 03:07:13 UT

RECON