RECON: TNO occultation with 533398

Event between (533398) 14GA54 and star GA0760:12017047 with event index number of 2164670

Geocentric closest approach at 2027/07/14 07:57:26 UTC

J2000 position of star is 18:06:01.7 -13:36:56
Equinox of date position of star is 18:07:24.9 -13:36:42
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 31 degrees from the moon. Moon is 83% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 31.0 AU from the Sun and 30.1 AU from the Earth.
Apparent velocity is 21.9 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 276 seconds.
The 1-sigma cross-track error in the shadow position is 1706 km.
The sky-plane scale is 21819.7 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=215.8 km assuming a 5% albedo -- 9.8 sec chord
Diameter=88.1 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 533398, (2027/07/14 07:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.0 -26:29:26  0.9 25.99   6
35Eta Oph      17:11:57.5 -15:45:25  2.6 13.62  19
PPM 234113     18:11:17.2 -13:55:39  6.4  0.95  32
PPM 234024     18:07:35.2 -13:38:18  9.9  0.03  31
533398         18:07:35.3 -13:36:40 15.5        32
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 3.3 sigma about the mid-time.
The median site spacing is 19.3 km RECON observability=1.0 and success probability=24.4%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	07:55:49	-17.6	AT	Up	23.6	200.2	Low	07:40:49 - 08:10:49	1617
Kelowna	07:55:45	-18.4	Dark	Up	24.1	201.3	Low	07:40:45 - 08:10:45	1560
Peachland	07:55:46	-18.5	Dark	Up	24.3	201.0	Low	07:40:46 - 08:10:46	1559
Summerland	07:55:45	-18.7	Dark	Up	24.4	201.1	Low	07:40:45 - 08:10:45	1549
Victoria	07:55:56	-19.6	Dark	Up	26.3	197.4	Low	07:40:56 - 08:10:56	1547
Penticton	07:55:45	-18.8	Dark	Up	24.5	201.2	Low	07:40:45 - 08:10:45	1544
Oliver	07:55:45	-19.1	Dark	Up	24.8	201.3	Low	07:40:45 - 08:10:45	1524
Anarchist Mountain Observatory	07:55:44	-19.3	Dark	Up	24.9	201.5	Low	07:40:44 - 08:10:44	1512
Okanogan	07:55:44	-19.9	Dark	Up	25.6	201.4	Low	07:40:44 - 08:10:44	1479
Brewster	07:55:45	-20.2	Dark	Up	25.9	201.2	Low	07:40:45 - 08:10:45	1466
Manson/Chelan	07:55:46	-20.4	Dark	Up	26.2	200.9	Low	07:40:46 - 08:10:46	1460
Sleaford	07:55:10	-15.6	AT	Down	18.3	214.2	Really Low	07:40:10 - 08:10:10	1460
Wenatchee	07:55:46	-20.9	Dark	Up	26.6	200.8	Low	07:40:46 - 08:10:46	1436
Ellensburg	07:55:46	-21.3	Dark	Up	27.1	200.6	Low	07:40:46 - 08:10:46	1415
Yakima	07:55:46	-21.7	Dark	Up	27.5	200.7	Low	07:40:46 - 08:10:46	1391
Toppenish/White Swan	07:55:45	-21.9	Dark	Up	27.6	200.9	Low	07:40:45 - 08:10:45	1376
The Dalles	07:55:47	-22.6	Dark	Up	28.5	200.2	Low	07:40:47 - 08:10:47	1342
PNWRO	07:55:40	-22.3	Dark	Up	27.6	202.6	Low	07:40:40 - 08:10:40	1328
Maupin	07:55:46	-23.1	Dark	Up	28.9	200.4	Low	07:40:46 - 08:10:46	1314
Sisters	07:55:47	-23.9	Dark	Up	29.9	200.1	Low	07:40:47 - 08:10:47	1269
Bend	07:55:46	-24.2	Dark	Up	30.0	200.4	Up	07:40:46 - 08:10:46	1249
Oregon Observatory	07:55:47	-24.3	Dark	Up	30.2	200.3	Up	07:40:47 - 08:10:47	1241
Chiloquin	07:55:47	-25.6	Dark	Up	31.6	200.1	Up	07:40:47 - 08:10:47	1163
Klamath Falls	07:55:47	-26.0	Dark	Up	31.9	200.3	Up	07:40:47 - 08:10:47	1139
Cedarville	07:55:41	-26.7	Dark	Up	32.1	202.2	Up	07:40:41 - 08:10:41	1065
Fall River/Burney	07:55:45	-27.2	Dark	Up	32.9	200.9	Up	07:40:45 - 08:10:45	1054
Greenville	07:55:43	-28.1	Dark	Up	33.6	201.6	Up	07:40:43 - 08:10:43	984
Gimple	07:55:42	-28.1	Dark	Up	33.6	201.7	Up	07:40:42 - 08:10:42	982
Quincy	07:55:43	-28.3	Dark	Up	33.8	201.7	Up	07:40:43 - 08:10:43	970
Portola	07:55:41	-28.4	Dark	Up	33.8	202.3	Up	07:40:41 - 08:10:41	953
Reno	07:55:38	-28.7	Dark	Up	33.8	203.0	Up	07:40:38 - 08:10:38	922
Carson City	07:55:38	-29.1	Dark	Up	34.1	203.2	Up	07:40:38 - 08:10:38	897
Gardnerville	07:55:38	-29.3	Dark	Up	34.3	203.3	Up	07:40:38 - 08:10:38	878
Yerington	07:55:36	-29.3	Dark	Up	34.1	203.9	Up	07:40:36 - 08:10:36	871
Hawthorne	07:55:33	-29.8	Dark	Up	34.4	204.6	Up	07:40:33 - 08:10:33	828
Lee Vining	07:55:35	-30.3	Dark	Up	35.0	204.2	Up	07:40:35 - 08:10:35	797
Bishop	07:55:32	-30.9	Dark	Up	35.3	205.2	Up	07:40:32 - 08:10:32	738
Dunrhomin	07:54:50	-27.0	Dark	Up	27.6	217.8	Low	07:39:50 - 08:09:50	680
Beatty	07:55:26	-31.4	Dark	Up	35.2	207.1	Up	07:40:26 - 08:10:26	672
Nikitin	07:54:50	-27.2	Dark	Up	27.7	217.9	Low	07:39:50 - 08:09:50	667
CU-SBO	07:54:50	-27.3	Dark	Up	27.8	217.8	Low	07:39:50 - 08:09:50	664
Patrick	07:55:14	-32.8	Dark	Up	35.4	210.8	Up	07:40:14 - 08:10:14	499
Laughlin/Bullhead City	07:55:17	-33.1	Dark	Up	35.9	210.1	Up	07:40:17 - 08:10:17	495
Wildwood	07:55:31	-34.2	Dark	Up	38.4	206.0	Up	07:40:31 - 08:10:31	494
Lake Havasu City	07:55:16	-33.7	Dark	Up	36.4	210.6	Up	07:40:16 - 08:10:16	437
Idyllwild	07:55:24	-34.6	Dark	Up	38.0	208.3	Up	07:40:24 - 08:10:24	428
Calipatria	07:55:19	-35.2	Dark	Up	38.0	209.8	Up	07:40:19 - 08:10:19	354
George/Scottsdale	07:55:06	-34.4	Dark	Up	36.0	213.5	Up	07:40:06 - 08:10:06	323
Yuma	07:55:15	-35.6	Dark	Up	38.0	211.0	Up	07:40:15 - 08:10:15	300

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, (2027/07/14 07:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.99   6
35Eta Oph      17:10:22.7 -15:43:29  2.6 13.62  19
PPM 234113     18:09:43.4 -13:56:04  6.4  0.95  32
PPM 234024     18:06:01.6 -13:38:35  9.9  0.03  31
533398         18:06:01.7 -13:36:56 15.5        31
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:27:11 UT

RECON