RECON: TNO occultation with 555916

Event between (555916) 14GB54 and star GA0880:05067486 with event index number of 2485195

Geocentric closest approach at 2027/05/20 09:33:03 UTC

J2000 position of star is 16:51:45.7 -01:55:24
Equinox of date position of star is 16:53:01.5 -01:57:45
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 28.2 AU from the Sun and 27.2 AU from the Earth.
Apparent velocity is 22.9 km/sec on the sky relative to the star, or, 4.2 arcsec/hr.
The 1-sigma error in the time of the event is 106 seconds.
The 1-sigma cross-track error in the shadow position is 1392 km.
The sky-plane scale is 19747.8 km/arcsec.

The object has an absolute magnitude Hv=7.8
Diameter=163.7 km assuming a 5% albedo -- 7.3 sec chord
Diameter=66.8 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 555916, (2027/05/20 09:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.5 -26:29:25  0.9 25.09  11
13Zet Oph      16:38:40.2 -10:37:13  2.6  9.37  19
16 Oph         16:46:53.3 +00:58:19  6.0  3.33  30
PPM 179954     16:55:35.8 -01:39:20  7.1  0.68  29
PPM 179945     16:52:57.0 -01:59:27 10.0  0.06  28
555916         16:53:11.1 -01:58:03 16.4        29
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 15.2 km RECON observability=1.0 and success probability=18.7%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	09:33:10	-10.6	NT	Up	32.8	206.8	Up	09:23:49 - 09:42:31	2452
Kamloops	09:33:47	-16.3	AT	Up	37.0	190.0	Up	09:24:26 - 09:43:08	2086
Kelowna	09:33:44	-16.8	AT	Up	37.7	191.2	Up	09:24:23 - 09:43:05	2055
Peachland	09:33:44	-17.0	AT	Up	37.8	190.8	Up	09:24:23 - 09:43:05	2042
Summerland	09:33:44	-17.1	AT	Up	37.9	191.0	Up	09:24:23 - 09:43:05	2035
Penticton	09:33:43	-17.1	AT	Up	38.0	191.1	Up	09:24:22 - 09:43:04	2033
Oliver	09:33:43	-17.4	AT	Up	38.3	191.2	Up	09:24:22 - 09:43:04	2011
Anarchist Mountain Observatory	09:33:42	-17.5	AT	Up	38.5	191.4	Up	09:24:21 - 09:43:03	2005
Okanogan	09:33:42	-18.2	Dark	Up	39.1	191.3	Up	09:24:21 - 09:43:03	1958
Brewster	09:33:42	-18.5	Dark	Up	39.4	191.1	Up	09:24:21 - 09:43:03	1936
Manson/Chelan	09:33:43	-18.8	Dark	Up	39.7	190.6	Up	09:24:22 - 09:43:04	1915
Victoria	09:33:54	-19.0	Dark	Up	39.4	186.4	Up	09:24:33 - 09:43:15	1884
Wenatchee	09:33:43	-19.3	Dark	Up	40.2	190.5	Up	09:24:22 - 09:43:04	1880
Ellensburg	09:33:43	-19.7	Dark	Up	40.6	190.2	Up	09:24:22 - 09:43:04	1848
Yakima	09:33:42	-20.1	Dark	Up	41.0	190.3	Up	09:24:21 - 09:43:03	1820
PNWRO	09:33:37	-20.1	Dark	Up	41.4	192.5	Up	09:24:16 - 09:42:58	1819
Toppenish/White Swan	09:33:42	-20.2	Dark	Up	41.2	190.5	Up	09:24:21 - 09:43:03	1809
Dunrhomin	09:32:46	-19.7	Dark	Up	42.9	212.1	Up	09:23:25 - 09:42:07	1743
The Dalles	09:33:43	-21.2	Dark	Up	42.1	189.6	Up	09:24:22 - 09:43:04	1738
Nikitin	09:32:46	-19.9	Dark	Up	43.1	212.2	Up	09:23:25 - 09:42:07	1730
CU-SBO	09:32:46	-20.0	Dark	Up	43.2	212.1	Up	09:23:25 - 09:42:07	1724
Maupin	09:33:42	-21.5	Dark	Up	42.5	189.8	Up	09:24:21 - 09:43:03	1712
Sisters	09:33:43	-22.5	Dark	Up	43.4	189.3	Up	09:24:22 - 09:43:04	1639
Bend	09:33:41	-22.6	Dark	Up	43.6	189.7	Up	09:24:20 - 09:43:02	1629
Oregon Observatory	09:33:42	-22.8	Dark	Up	43.8	189.5	Up	09:24:21 - 09:43:03	1614
Chiloquin	09:33:41	-24.1	Dark	Up	45.1	189.1	Up	09:24:20 - 09:43:02	1508
Klamath Falls	09:33:40	-24.4	Dark	Up	45.5	189.3	Up	09:24:19 - 09:43:01	1485
Cedarville	09:33:34	-24.6	Dark	Up	45.9	191.7	Up	09:24:13 - 09:42:55	1474
Fall River/Burney	09:33:38	-25.4	Dark	Up	46.6	190.0	Up	09:24:17 - 09:42:59	1407
Gimple	09:33:34	-26.1	Dark	Up	47.4	191.0	Up	09:24:13 - 09:42:55	1352
Greenville	09:33:35	-26.1	Dark	Up	47.4	190.8	Up	09:24:14 - 09:42:56	1350
Portola	09:33:33	-26.2	Dark	Up	47.7	191.6	Up	09:24:12 - 09:42:54	1337
Quincy	09:33:34	-26.3	Dark	Up	47.6	190.9	Up	09:24:13 - 09:42:55	1335
Reno	09:33:30	-26.3	Dark	Up	47.8	192.6	Up	09:24:09 - 09:42:51	1334
Yerington	09:33:27	-26.5	Dark	Up	48.2	193.7	Up	09:24:06 - 09:42:48	1308
Carson City	09:33:29	-26.6	Dark	Up	48.2	192.7	Up	09:24:08 - 09:42:50	1307
Gardnerville	09:33:29	-26.8	Dark	Up	48.4	192.9	Up	09:24:08 - 09:42:50	1289
Hawthorne	09:33:24	-26.8	Dark	Up	48.6	194.6	Up	09:24:03 - 09:42:45	1286
Lee Vining	09:33:25	-27.4	Dark	Up	49.2	194.0	Up	09:24:04 - 09:42:46	1230
Beatty	09:33:15	-27.5	Dark	Up	49.7	197.9	Up	09:23:54 - 09:42:36	1207
Bishop	09:33:21	-27.7	Dark	Up	49.7	195.3	Up	09:24:00 - 09:42:42	1201
Patrick	09:33:02	-27.6	Dark	Up	50.3	202.7	Up	09:23:41 - 09:42:23	1164
Laughlin/Bullhead City	09:33:04	-28.1	Dark	Up	50.8	201.8	Up	09:23:43 - 09:42:25	1126
George/Scottsdale	09:32:51	-28.1	Dark	Up	51.2	206.5	Up	09:23:30 - 09:42:12	1081
Lake Havasu City	09:33:02	-28.6	Dark	Up	51.3	202.5	Up	09:23:41 - 09:42:23	1079
Idyllwild	09:33:10	-30.3	Dark	Up	52.7	199.1	Up	09:23:49 - 09:42:31	954
Calipatria	09:33:04	-30.3	Dark	Up	53.0	201.3	Up	09:23:43 - 09:42:25	934
Wildwood	09:33:17	-30.7	Dark	Up	52.9	196.0	Up	09:23:56 - 09:42:38	932
Yuma	09:33:00	-30.3	Dark	Up	53.1	202.9	Up	09:23:39 - 09:42:21	923

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 555916, (2027/05/20 09:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.09  11
13Zet Oph      16:37:09.6 -10:34:01  2.6  9.37  19
16 Oph         16:45:29.7 +01:01:13  6.0  3.33  30
PPM 179954     16:54:10.6 -01:36:46  7.1  0.68  29
PPM 179945     16:51:31.6 -01:56:47 10.0  0.06  28
555916         16:51:45.7 -01:55:24 16.4        28
Positions are for J2000

Event circumstances last updated at 2024/04/18 03:48:13 UT

RECON