RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1320:03593502 with event index number of 1210440

Geocentric closest approach at 2022/11/18 06:57:13 UTC

J2000 position of star is 06:17:08.7 +43:46:37
Equinox of date position of star is 06:18:48.2 +43:46:01
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 72 degrees from the moon. Moon is 34% illuminated.
TNO apparent brightness V=18.9

[RECON map]
TNO is 13.8 AU from the Sun and 13.0 AU from the Earth.
The TNO is moving 16.3 km/sec on the sky relative to the star, or, 6.2 arcsec/hr.
The 1-sigma error in the time of the event is 36 seconds.
The 1-sigma cross-track error in the shadow position is 489 km.
The sky-plane scale is 9434.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 12.0 sec chord
Diameter=79.6 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 54598, (2022/11/18 06:57UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:42.9 +27:58:09  1.1 23.67  52
34Bet Aur      06:01:12.5 +44:56:50  1.9  3.36  75
38 Aur         06:04:57.0 +42:54:30  6.1  2.66  74
PPM 048880     06:16:20.4 +44:34:33  8.2  0.92  72
PPM 048905     06:18:00.2 +43:39:22  9.3  0.18  72
54598          06:18:48.3 +43:46:01 15.4        71
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 31.6 km RECON observability=1.0 and success probability=80.9%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	07:00:57	-57.3	Dark	Down	54.7	80.5	Up	06:57:27 - 07:04:27	1369
Sleaford	07:00:04	-57.1	Dark	Down	63.6	93.2	Up	06:56:34 - 07:03:34	1300
Kelowna	07:00:56	-58.2	Dark	Down	55.1	79.9	Up	06:57:26 - 07:04:26	1264
Peachland	07:00:57	-58.3	Dark	Down	54.9	79.6	Up	06:57:27 - 07:04:27	1259
Summerland	07:00:57	-58.4	Dark	Down	55.0	79.4	Up	06:57:27 - 07:04:27	1241
Penticton	07:00:57	-58.5	Dark	Down	55.0	79.4	Up	06:57:27 - 07:04:27	1232
Victoria	07:01:11	-58.5	Dark	Down	52.4	75.9	Up	06:57:41 - 07:04:41	1214
Oliver	07:00:57	-58.9	Dark	Down	55.0	78.9	Up	06:57:27 - 07:04:27	1194
Anarchist Mountain Observatory	07:00:57	-59.1	Dark	Down	55.0	78.8	Up	06:57:27 - 07:04:27	1172
Okanogan	07:00:59	-59.6	Dark	Down	54.8	77.8	Up	06:57:29 - 07:04:29	1108
Brewster	07:01:00	-59.8	Dark	Down	54.6	77.3	Up	06:57:30 - 07:04:30	1084
Manson/Chelan	07:01:02	-59.9	Dark	Down	54.3	76.8	Up	06:57:32 - 07:04:32	1070
Wenatchee	07:01:03	-60.3	Dark	Down	54.1	76.1	Up	06:57:33 - 07:04:33	1024
Ellensburg	07:01:05	-60.7	Dark	Down	53.8	75.4	Up	06:57:35 - 07:04:35	985
Yakima	07:01:06	-61.0	Dark	Down	53.7	74.9	Up	06:57:36 - 07:04:36	942
Toppenish/White Swan	07:01:05	-61.3	Dark	Down	53.8	74.7	Up	06:57:35 - 07:04:35	916
The Dalles	07:01:10	-61.8	Dark	Down	53.1	73.3	Up	06:57:40 - 07:04:40	852
PNWRO	07:01:00	-62.0	Dark	Down	54.7	74.9	Up	06:57:30 - 07:04:30	842
Maupin	07:01:10	-62.2	Dark	Down	53.0	72.8	Up	06:57:40 - 07:04:40	806
Sisters	07:01:13	-62.8	Dark	Down	52.4	71.5	Up	06:57:43 - 07:04:43	725
Bend	07:01:13	-63.1	Dark	Down	52.5	71.3	Up	06:57:43 - 07:04:43	693
Oregon Observatory	07:01:13	-63.2	Dark	Down	52.4	71.1	Up	06:57:43 - 07:04:43	678
Chiloquin	07:01:17	-64.3	Dark	Down	51.6	69.3	Up	06:57:47 - 07:04:47	550
Klamath Falls	07:01:17	-64.6	Dark	Down	51.6	68.9	Up	06:57:47 - 07:04:47	512
Cedarville	07:01:12	-65.8	Dark	Down	52.4	68.6	Up	06:57:42 - 07:04:42	397
Fall River/Burney	07:01:18	-65.8	Dark	Down	51.4	67.7	Up	06:57:48 - 07:04:48	378
Greenville	07:01:17	-66.7	Dark	Down	51.4	66.8	Up	06:57:47 - 07:04:47	271
Gimple	07:01:17	-66.8	Dark	Down	51.4	66.8	Up	06:57:47 - 07:04:47	268
Quincy	07:01:17	-66.9	Dark	Down	51.3	66.5	Up	06:57:47 - 07:04:47	249
Portola	07:01:16	-67.2	Dark	Down	51.6	66.5	Up	06:57:46 - 07:04:46	223
Reno	07:01:13	-67.7	Dark	Down	51.9	66.4	Up	06:57:43 - 07:04:43	179
Carson City	07:01:14	-68.0	Dark	Down	51.8	66.0	Up	06:57:44 - 07:04:44	140
Gardnerville	07:01:14	-68.2	Dark	Down	51.7	65.7	Up	06:57:44 - 07:04:44	113
Yerington	07:01:11	-68.4	Dark	Down	52.2	65.9	Up	06:57:41 - 07:04:41	103
Hawthorne	07:01:10	-69.0	Dark	Down	52.3	65.4	Up	06:57:40 - 07:04:40	41
Lee Vining	07:01:12	-69.3	Dark	Down	51.8	64.7	Up	06:57:42 - 07:04:42	-6
Dunrhomin	07:00:10	-68.8	Dark	Down	62.4	70.3	Up	06:56:40 - 07:03:40	-10
CU-SBO	07:00:10	-69.0	Dark	Down	62.3	69.8	Up	06:56:40 - 07:03:40	-36
Bishop	07:01:10	-70.1	Dark	Down	52.0	64.1	Up	06:57:40 - 07:04:40	-88
Beatty	07:01:03	-71.1	Dark	Down	53.0	63.8	Up	06:57:33 - 07:04:33	-176
Patrick	07:00:52	-73.2	Dark	Down	54.3	62.3	Up	06:57:22 - 07:04:22	-398
Laughlin/Bullhead City	07:00:55	-73.3	Dark	Down	53.7	61.9	Up	06:57:25 - 07:04:25	-408
Wildwood	07:01:14	-72.9	Dark	Down	50.4	60.5	Up	06:57:44 - 07:04:44	-426
Lake Havasu City	07:00:54	-74.0	Dark	Down	53.6	61.1	Up	06:57:24 - 07:04:24	-485
Idyllwild	07:01:06	-74.0	Dark	Down	51.5	60.2	Up	06:57:36 - 07:04:36	-511
Calipatria	07:01:01	-74.9	Dark	Down	52.1	59.6	Up	06:57:31 - 07:04:31	-603
George/Scottsdale	07:00:43	-75.3	Dark	Down	54.9	60.2	Up	06:57:13 - 07:04:13	-617
Yuma	07:00:57	-75.6	Dark	Down	52.5	59.1	Up	06:57:27 - 07:04:27	-668

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 54598, (2022/11/18 06:57UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 23.67  52
34Bet Aur      05:59:31.6 +44:56:51  1.9  3.36  75
38 Aur         06:03:18.2 +42:54:39  6.1  2.66  74
PPM 048880     06:14:39.9 +44:35:04  8.2  0.92  72
PPM 048905     06:16:20.7 +43:39:57  9.3  0.18  72
54598          06:17:08.7 +43:46:37 15.4        72
Positions are for J2000

Event circumstances last updated at 2022/11/13 03:28:14 UT

RECON