RECON: TNO occultation with 533398

Event between (533398) 14GA54 and star GA0740:15318779 with event index number of 2164704

Geocentric closest approach at 2027/10/11 02:43:32 UTC

J2000 position of star is 18:03:38.7 -14:07:30
Equinox of date position of star is 18:05:02.2 -14:07:21
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 56 degrees from the moon. Moon is 82% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 31.0 AU from the Sun and 31.3 AU from the Earth.
Apparent velocity is 15.8 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 363 seconds.
The 1-sigma cross-track error in the shadow position is 2383 km.
The sky-plane scale is 22689.7 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=215.8 km assuming a 5% albedo -- 13.7 sec chord
Diameter=88.1 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 533398, (2027/10/11 02:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.9 -26:29:28  0.9 25.23  77
35Eta Oph      17:11:58.4 -15:45:26  2.6 12.96  69
PPM 234113     18:11:18.0 -13:55:39  6.4  1.49  55
PPM 233919     18:03:11.4 -13:35:07  8.5  0.73  57
PPM 233977     18:05:37.3 -14:14:35  9.1  0.15  56
533398         18:05:13.4 -14:07:20 14.9        56
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 2.5 sigma about the mid-time.
The median site spacing is 16.2 km RECON observability=0.4 and success probability=4.5%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	02:44:01	-22.6	Dark	Up	13.8	223.6	Really Low	02:29:01 - 02:59:01	3834
Kamloops	02:43:15	-14.0	AT	Up	20.4	210.1	Low	02:28:15 - 02:58:15	3629
Kelowna	02:43:22	-14.7	AT	Up	20.8	211.2	Low	02:28:22 - 02:58:22	3617
Peachland	02:43:21	-14.5	AT	Up	21.0	210.9	Low	02:28:21 - 02:58:21	3609
Summerland	02:43:22	-14.6	AT	Up	21.1	211.0	Low	02:28:22 - 02:58:22	3605
Penticton	02:43:23	-14.7	AT	Up	21.1	211.2	Low	02:28:23 - 02:58:23	3605
Oliver	02:43:24	-14.7	AT	Up	21.4	211.2	Low	02:28:24 - 02:58:24	3593
Anarchist Mountain Observatory	02:43:26	-14.9	AT	Up	21.5	211.5	Low	02:28:26 - 02:58:26	3591
Okanogan	02:43:27	-14.8	AT	Up	22.1	211.4	Low	02:28:27 - 02:58:27	3564
Brewster	02:43:27	-14.7	AT	Up	22.4	211.2	Low	02:28:27 - 02:58:27	3552
Manson/Chelan	02:43:26	-14.5	AT	Up	22.7	210.9	Low	02:28:26 - 02:58:26	3538
Wenatchee	02:43:27	-14.4	AT	Up	23.2	210.9	Low	02:28:27 - 02:58:27	3518
Victoria	02:43:11	-12.2	AT	Up	23.3	207.5	Low	02:28:11 - 02:58:11	3507
Ellensburg	02:43:28	-14.3	AT	Up	23.6	210.7	Low	02:28:28 - 02:58:28	3499
PNWRO	02:43:38	-15.6	AT	Up	23.9	212.6	Low	02:28:38 - 02:58:38	3488
Yakima	02:43:29	-14.3	AT	Up	24.0	210.8	Low	02:28:29 - 02:58:29	3483
Toppenish/White Swan	02:43:31	-14.5	AT	Up	24.1	211.0	Low	02:28:31 - 02:58:31	3478
The Dalles	02:43:30	-14.0	AT	Up	25.0	210.4	Low	02:28:30 - 02:58:30	3433
Dunrhomin	02:44:41	-26.6	Dark	Up	21.7	227.1	Low	02:29:41 - 02:59:41	3429
Nikitin	02:44:41	-26.7	Dark	Up	21.8	227.1	Low	02:29:41 - 02:59:41	3421
Maupin	02:43:32	-14.1	AT	Up	25.4	210.7	Low	02:28:32 - 02:58:32	3418
CU-SBO	02:44:41	-26.6	Dark	Up	21.9	227.1	Low	02:29:41 - 02:59:41	3418
Sisters	02:43:32	-13.8	AT	Up	26.3	210.4	Low	02:28:32 - 02:58:32	3373
Bend	02:43:35	-14.0	AT	Up	26.4	210.7	Low	02:28:35 - 02:58:35	3367
Oregon Observatory	02:43:35	-13.9	AT	Up	26.6	210.6	Low	02:28:35 - 02:58:35	3358
Chiloquin	02:43:38	-13.7	AT	Up	27.9	210.6	Low	02:28:38 - 02:58:38	3291
Klamath Falls	02:43:40	-13.8	AT	Up	28.2	210.7	Low	02:28:40 - 02:58:40	3277
Cedarville	02:43:50	-15.1	AT	Up	28.1	212.6	Low	02:28:50 - 02:58:50	3274
Fall River/Burney	02:43:46	-14.2	AT	Up	29.0	211.5	Low	02:28:46 - 02:58:46	3228
Gimple	02:43:51	-14.7	AT	Up	29.6	212.3	Low	02:28:51 - 02:58:51	3193
Greenville	02:43:51	-14.6	AT	Up	29.6	212.2	Low	02:28:51 - 02:58:51	3192
Portola	02:43:55	-15.0	AT	Up	29.7	212.8	Low	02:28:55 - 02:58:55	3185
Reno	02:43:58	-15.5	AT	Up	29.6	213.6	Low	02:28:58 - 02:58:58	3183
Quincy	02:43:52	-14.6	AT	Up	29.8	212.3	Low	02:28:52 - 02:58:52	3182
Yerington	02:44:04	-16.1	AT	Up	29.8	214.4	Low	02:29:04 - 02:59:04	3167
Carson City	02:43:59	-15.6	AT	Up	29.9	213.7	Low	02:28:59 - 02:58:59	3165
Gardnerville	02:44:01	-15.6	AT	Up	30.1	213.9	Up	02:29:01 - 02:59:01	3154
Hawthorne	02:44:08	-16.5	AT	Up	29.9	215.1	Low	02:29:08 - 02:59:08	3152
Lee Vining	02:44:08	-16.2	AT	Up	30.6	214.8	Up	02:29:08 - 02:59:08	3114
Beatty	02:44:22	-18.2	Dark	Up	30.3	217.6	Up	02:29:22 - 02:59:22	3098
Bishop	02:44:14	-16.8	AT	Up	30.7	215.8	Up	02:29:14 - 02:59:14	3095
Patrick	02:44:40	-20.7	Dark	Up	29.9	221.0	Low	02:29:40 - 02:59:40	3063
Laughlin/Bullhead City	02:44:41	-20.2	Dark	Up	30.5	220.4	Up	02:29:41 - 02:59:41	3037
George/Scottsdale	02:44:41	-22.6	Dark	Up	30.1	223.5	Up	02:29:41 - 02:59:41	3009
Lake Havasu City	02:44:41	-20.5	Dark	Up	30.9	220.9	Up	02:29:41 - 02:59:41	3003
Idyllwild	02:44:35	-18.5	Dark	Up	32.7	218.9	Up	02:29:35 - 02:59:35	2920
Wildwood	02:44:25	-16.9	AT	Up	33.4	216.8	Up	02:29:25 - 02:59:25	2906
Calipatria	02:44:41	-19.6	Dark	Up	32.6	220.3	Up	02:29:41 - 02:59:41	2903
Yuma	02:44:41	-20.4	Dark	Up	32.4	221.3	Up	02:29:41 - 02:59:41	2895

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 533398, (2027/10/11 02:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.23  77
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.96  69
PPM 234113     18:09:43.4 -13:56:04  6.4  1.49  55
PPM 233919     18:01:37.0 -13:35:12  8.5  0.73  57
PPM 233977     18:04:02.5 -14:14:47  9.1  0.15  56
533398         18:03:38.7 -14:07:30 14.9        56
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:28:53 UT

RECON