RECON: TNO occultation with 160427

Event between (160427) 05RL43 and star GA1000:00666365 with event index number of 1967156

Geocentric closest approach at 2024/11/19 06:53:37 UTC

J2000 position of star is 05:10:37.3 +10:12:34
Equinox of date position of star is 05:11:56.7 +10:14:16
Stellar brightness G=15.7, 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 85% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 24.7 AU from the Sun and 23.8 AU from the Earth.
Apparent velocity is 22.5 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is 868 km.
The sky-plane scale is 17272.3 km/arcsec.

The object has an absolute magnitude Hv=8.0
Diameter=155.6 km assuming a 5% albedo -- 6.9 sec chord
Diameter=63.5 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 160427, (2024/11/19 06:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.1 +16:33:27  0.8 10.53  35
Bellatrix      05:26:28.0 +06:22:13  1.6  5.27  31
16 Ori         05:10:41.9 +09:51:34  5.4  0.50  31
PPM 148551     05:11:30.2 +09:59:31  7.5  0.27  31
160427         05:11:59.7 +10:14:20 15.7        30
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 24.1 km RECON observability=1.0 and success probability=100.4%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	06:54:34	-57.2	Dark	Up	40.1	131.5	Up	06:50:07 - 06:59:00	398
Oliver	06:54:34	-58.8	Dark	Up	41.5	131.5	Up	06:50:07 - 06:59:00	375
Peachland	06:54:34	-58.2	Dark	Up	41.0	131.6	Up	06:50:07 - 06:59:00	373
Summerland	06:54:34	-58.4	Dark	Up	41.2	131.6	Up	06:50:07 - 06:59:00	371
Anarchist Mountain Observatory	06:54:34	-59.0	Dark	Up	41.7	131.6	Up	06:50:07 - 06:59:00	370
Penticton	06:54:34	-58.5	Dark	Up	41.3	131.7	Up	06:50:07 - 06:59:00	366
Kelowna	06:54:34	-58.2	Dark	Up	41.1	132.0	Up	06:50:07 - 06:59:00	354
Victoria	06:55:01	-58.3	Dark	Up	40.0	126.9	Up	06:50:34 - 06:59:27	158
Sleaford	06:54:06	-57.5	Dark	Up	44.7	149.9	Up	06:49:40 - 06:58:33	125
Okanogan	06:54:51	-59.6	Dark	Up	42.1	131.0	Up	06:50:25 - 06:59:18	77
Brewster	06:54:53	-59.8	Dark	Up	42.1	130.6	Up	06:50:26 - 06:59:19	61
Manson/Chelan	06:54:54	-59.9	Dark	Up	42.1	130.0	Up	06:50:28 - 06:59:21	52
Wenatchee	06:54:56	-60.2	Dark	Up	42.3	129.5	Up	06:50:29 - 06:59:22	19
Ellensburg	06:54:58	-60.6	Dark	Up	42.5	129.0	Up	06:50:31 - 06:59:24	-9
Yakima	06:54:59	-60.9	Dark	Up	42.7	128.6	Up	06:50:32 - 06:59:25	-40
Toppenish/White Swan	06:54:59	-61.2	Dark	Up	42.9	128.7	Up	06:50:32 - 06:59:25	-60
The Dalles	06:55:03	-61.6	Dark	Up	43.0	127.2	Up	06:50:37 - 06:59:30	-105
PNWRO	06:54:56	-61.9	Dark	Up	44.0	130.1	Up	06:50:29 - 06:59:22	-117
Maupin	06:55:04	-62.0	Dark	Up	43.3	127.1	Up	06:50:37 - 06:59:30	-140
Sisters	06:55:08	-62.6	Dark	Up	43.5	125.9	Up	06:50:41 - 06:59:34	-200
Bend	06:55:08	-62.9	Dark	Up	43.8	126.0	Up	06:50:41 - 06:59:34	-224
Oregon Observatory	06:55:08	-63.0	Dark	Up	43.9	125.7	Up	06:50:42 - 06:59:35	-235
Chiloquin	06:55:13	-64.0	Dark	Up	44.4	124.2	Up	06:50:47 - 06:59:40	-333
Klamath Falls	06:55:14	-64.3	Dark	Up	44.6	124.0	Up	06:50:47 - 06:59:40	-363
Cedarville	06:55:11	-65.5	Dark	Up	46.0	125.2	Up	06:50:45 - 06:59:38	-453
Fall River/Burney	06:55:16	-65.5	Dark	Up	45.5	123.5	Up	06:50:49 - 06:59:42	-469
Greenville	06:55:17	-66.4	Dark	Up	46.3	123.2	Up	06:50:50 - 06:59:43	-555
Gimple	06:55:17	-66.5	Dark	Up	46.4	123.3	Up	06:50:50 - 06:59:43	-557
Quincy	06:55:17	-66.6	Dark	Up	46.4	123.0	Up	06:50:51 - 06:59:44	-572
Portola	06:55:16	-66.9	Dark	Up	46.8	123.4	Up	06:50:50 - 06:59:43	-593
Reno	06:55:15	-67.4	Dark	Up	47.4	123.9	Up	06:50:49 - 06:59:42	-629
Carson City	06:55:16	-67.7	Dark	Up	47.6	123.6	Up	06:50:49 - 06:59:42	-660
Gardnerville	06:55:16	-67.9	Dark	Up	47.7	123.4	Up	06:50:50 - 06:59:43	-683
Yerington	06:55:14	-68.1	Dark	Up	48.1	124.1	Up	06:50:48 - 06:59:41	-691
Hawthorne	06:55:14	-68.7	Dark	Up	48.7	124.2	Up	06:50:48 - 06:59:41	-742
Lee Vining	06:55:17	-69.0	Dark	Up	48.7	123.2	Up	06:50:50 - 06:59:43	-781
Bishop	06:55:16	-69.8	Dark	Up	49.5	123.4	Up	06:50:49 - 06:59:42	-850
Dunrhomin	06:54:27	-69.3	Dark	Up	54.9	143.3	Up	06:50:00 - 06:58:53	-863
Nikitin	06:54:27	-69.4	Dark	Up	55.1	143.1	Up	06:50:01 - 06:58:54	-879
CU-SBO	06:54:27	-69.5	Dark	Up	55.1	143.0	Up	06:50:01 - 06:58:54	-883
Beatty	06:55:12	-70.9	Dark	Up	50.8	124.8	Up	06:50:45 - 06:59:38	-926
Patrick	06:55:06	-73.2	Dark	Up	53.6	126.7	Up	06:50:39 - 06:59:32	-1124
Laughlin/Bullhead City	06:55:09	-73.2	Dark	Up	53.3	125.5	Up	06:50:42 - 06:59:35	-1132
Wildwood	06:55:24	-72.5	Dark	Up	51.1	119.9	Up	06:50:58 - 06:59:51	-1141
Lake Havasu City	06:55:09	-73.9	Dark	Up	53.8	125.1	Up	06:50:43 - 06:59:36	-1199
Idyllwild	06:55:19	-73.6	Dark	Up	52.6	121.5	Up	06:50:52 - 06:59:45	-1216
Calipatria	06:55:16	-74.7	Dark	Up	53.8	122.2	Up	06:50:50 - 06:59:43	-1300
George/Scottsdale	06:55:02	-75.3	Dark	Up	55.9	127.3	Up	06:50:36 - 06:59:29	-1326
Yuma	06:55:14	-75.4	Dark	Up	54.6	122.7	Up	06:50:48 - 06:59:41	-1361

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 160427, (2024/11/19 06:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.53  35
Bellatrix      05:25:07.8 +06:20:58  1.6  5.27  31
16 Ori         05:09:19.7 +09:49:46  5.4  0.50  31
PPM 148551     05:10:08.0 +09:57:45  7.5  0.27  31
160427         05:10:37.3 +10:12:34 15.7        31
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:49:49 UT

RECON