RECON: TNO occultation with 530838

Event between (530838) 11UC411 and star GA1140:00600406 with event index number of 2443419

Geocentric closest approach at 2024/08/06 10:40:53 UTC

J2000 position of star is 04:03:24.6 +24:11:43
Equinox of date position of star is 04:04:47.5 +24:15:27
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 93 degrees from the moon. Moon is 4% illuminated.
Apparent brightness V=23.1

[RECON map]
Object is 30.4 AU from the Sun and 30.8 AU from the Earth.
Apparent velocity is 15.5 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 209 seconds.
The 1-sigma cross-track error in the shadow position is 2049 km.
The sky-plane scale is 22311.1 km/arcsec.

The object has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 9.7 sec chord
Diameter=61.8 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 530838, (2024/08/06 10:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.1 +16:33:25  0.8 10.82  87
44Zet Per      03:55:41.1 +31:57:17  2.8  7.96  93
36 Tau         04:05:50.2 +24:10:18  6.1  0.23  93
PPM 093198     04:05:17.1 +24:28:04 10.3  0.23  93
530838         04:04:53.1 +24:15:42 15.0        93
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 4.3 sigma about the mid-time.
The median site spacing is 19.8 km RECON observability=1.0 and success probability=14.4%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	10:38:08	-15.1	AT	Down	33.4	91.7	Up	10:23:08 - 10:53:08	-1618
Victoria	10:37:51	-18.1	Dark	Down	31.3	88.0	Up	10:22:51 - 10:52:51	-1628
Peachland	10:38:03	-15.6	AT	Down	33.8	91.5	Up	10:23:03 - 10:53:03	-1688
Kelowna	10:38:04	-15.4	AT	Down	34.0	91.8	Up	10:23:04 - 10:53:04	-1692
Summerland	10:38:02	-15.7	AT	Down	33.8	91.5	Up	10:23:02 - 10:53:02	-1699
Penticton	10:38:02	-15.7	AT	Down	33.9	91.5	Up	10:23:02 - 10:53:02	-1707
Oliver	10:38:00	-16.0	AT	Down	33.9	91.3	Up	10:23:00 - 10:53:00	-1726
Anarchist Mountain Observatory	10:37:58	-16.1	AT	Down	34.0	91.3	Up	10:22:58 - 10:52:58	-1742
Okanogan	10:37:54	-16.7	AT	Down	33.9	90.7	Up	10:22:54 - 10:52:54	-1771
Manson/Chelan	10:37:51	-17.3	AT	Down	33.5	90.0	Up	10:22:51 - 10:52:51	-1778
Brewster	10:37:52	-17.0	AT	Down	33.8	90.4	Up	10:22:52 - 10:52:52	-1779
Wenatchee	10:37:48	-17.7	AT	Down	33.4	89.5	Up	10:22:48 - 10:52:48	-1799
Ellensburg	10:37:44	-18.2	Dark	Down	33.2	89.1	Up	10:22:44 - 10:52:44	-1814
Yakima	10:37:42	-18.5	Dark	Down	33.2	88.8	Up	10:22:42 - 10:52:42	-1837
Toppenish/White Swan	10:37:41	-18.6	Dark	Down	33.3	88.8	Up	10:22:41 - 10:52:41	-1856
The Dalles	10:37:34	-19.6	Dark	Down	32.7	87.7	Up	10:22:34 - 10:52:34	-1873
Maupin	10:37:33	-19.8	Dark	Down	32.8	87.5	Up	10:22:33 - 10:52:33	-1902
PNWRO	10:37:41	-18.2	Dark	Down	34.3	89.6	Up	10:22:41 - 10:52:41	-1933
Sisters	10:37:26	-20.8	Dark	Down	32.3	86.6	Up	10:22:26 - 10:52:26	-1936
Bend	10:37:25	-20.9	Dark	Down	32.5	86.6	Up	10:22:25 - 10:52:25	-1960
Oregon Observatory	10:37:25	-21.0	Dark	Down	32.4	86.4	Up	10:22:25 - 10:52:25	-1966
Sleaford	10:38:42	-7.8	NT	Down	42.2	105.2	Up	10:23:42 - 10:53:42	-2022
Chiloquin	10:37:16	-22.3	Dark	Down	32.0	85.3	Up	10:22:16 - 10:52:16	-2031
Klamath Falls	10:37:14	-22.5	Dark	Down	32.0	85.1	Up	10:22:14 - 10:52:14	-2056
Fall River/Burney	10:37:08	-23.3	Dark	Down	32.2	84.6	Up	10:22:08 - 10:52:08	-2147
Cedarville	10:37:12	-22.3	Dark	Down	33.1	85.7	Up	10:22:12 - 10:52:12	-2163
Greenville	10:37:03	-23.8	Dark	Down	32.4	84.3	Up	10:22:03 - 10:52:03	-2224
Gimple	10:37:03	-23.8	Dark	Down	32.5	84.3	Up	10:22:03 - 10:52:03	-2227
Quincy	10:37:02	-24.0	Dark	Down	32.4	84.1	Up	10:22:02 - 10:52:02	-2237
Portola	10:37:02	-23.8	Dark	Down	32.7	84.3	Up	10:22:02 - 10:52:02	-2265
Reno	10:37:02	-23.7	Dark	Down	33.2	84.6	Up	10:22:02 - 10:52:02	-2309
Carson City	10:36:59	-24.0	Dark	Down	33.2	84.3	Up	10:21:59 - 10:51:59	-2334
Gardnerville	10:36:58	-24.1	Dark	Down	33.2	84.2	Up	10:21:58 - 10:51:58	-2353
Yerington	10:36:59	-23.8	Dark	Down	33.6	84.6	Up	10:21:59 - 10:51:59	-2374
Hawthorne	10:36:57	-23.9	Dark	Down	34.0	84.6	Up	10:21:57 - 10:51:57	-2428
Lee Vining	10:36:53	-24.6	Dark	Down	33.6	83.9	Up	10:21:53 - 10:51:53	-2446
Bishop	10:36:51	-24.6	Dark	Down	34.1	83.9	Up	10:21:51 - 10:51:51	-2520
Beatty	10:36:52	-24.1	Dark	Down	35.3	84.5	Up	10:21:52 - 10:51:52	-2623
Wildwood	10:36:33	-27.2	Dark	Down	33.4	81.6	Up	10:21:33 - 10:51:33	-2749
Laughlin/Bullhead City	10:36:47	-24.1	Dark	Down	36.9	84.4	Up	10:21:47 - 10:51:47	-2846
Patrick	10:36:49	-23.5	Dark	Down	37.5	84.9	Up	10:21:49 - 10:51:49	-2858
Idyllwild	10:36:35	-26.4	Dark	Down	34.9	82.3	Up	10:21:35 - 10:51:35	-2859
Dunrhomin	10:37:37	-15.0	AT	Down	44.5	94.6	Up	10:22:37 - 10:52:37	-2864
Nikitin	10:37:37	-15.1	AT	Down	44.5	94.4	Up	10:22:37 - 10:52:37	-2877
CU-SBO	10:37:36	-15.2	AT	Down	44.5	94.3	Up	10:22:36 - 10:52:36	-2879
Lake Havasu City	10:36:42	-24.4	Dark	Down	37.0	84.0	Up	10:21:42 - 10:51:42	-2908
Calipatria	10:36:34	-26.1	Dark	Down	35.8	82.4	Up	10:21:34 - 10:51:34	-2959
Yuma	10:36:34	-25.9	Dark	Down	36.5	82.5	Up	10:21:34 - 10:51:34	-3033
George/Scottsdale	10:36:44	-23.4	Dark	Down	39.0	84.6	Up	10:21:44 - 10:51:44	-3078

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 530838, (2024/08/06 10:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.82  87
44Zet Per      03:54:07.9 +31:53:01  2.8  7.96  93
36 Tau         04:04:21.7 +24:06:21  6.1  0.23  93
PPM 093198     04:03:48.4 +24:24:06 10.3  0.23  93
530838         04:03:24.6 +24:11:43 15.0        93
Positions are for J2000

Event circumstances last updated at 2023/01/15 03:40:53 UT

RECON