RECON: TNO occultation with 524834

Event between (524834) 03YL179 and star GA1120:02497458 with event index number of 2217927

Geocentric closest approach at 2024/11/23 13:19:32 UTC

J2000 position of star is 06:51:39.5 +22:04:17
Equinox of date position of star is 06:53:07.5 +22:02:25
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 55 degrees from the moon. Moon is 45% illuminated.
Apparent brightness V=23.3

[RECON map]
Object is 38.7 AU from the Sun and 38.0 AU from the Earth.
Apparent velocity is 18.3 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 1266 seconds.
The 1-sigma cross-track error in the shadow position is 4957 km.
The sky-plane scale is 27554.1 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=208.9 km assuming a 5% albedo -- 11.1 sec chord
Diameter=85.3 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 524834, (2024/11/23 13:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.3 +27:57:51  1.1 13.52  44
Alhena         06:39:09.0 +16:22:33  1.9  6.56  59
36 Gem         06:53:02.5 +21:43:46  5.3  0.31  55
PPM 096732     06:56:34.4 +22:31:37  8.0  0.93  55
36 Gem         06:53:02.5 +21:43:46  5.3  0.31  55
524834         06:53:09.1 +22:02:23 16.6        55
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 0.7 sigma about the mid-time.
The median site spacing is 28.5 km RECON observability=0.8 and success probability=2.8%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	13:16:50	-12.1	AT	Up	39.5	254.6	Up	13:01:50 - 13:31:50	11437
Kamloops	13:17:23	-20.5	Dark	Up	48.3	241.4	Up	13:02:23 - 13:32:23	11007
Kelowna	13:17:16	-19.8	Dark	Up	48.2	243.2	Up	13:02:16 - 13:32:16	10955
Peachland	13:17:17	-20.0	Dark	Up	48.4	243.0	Up	13:02:17 - 13:32:17	10939
Summerland	13:17:16	-19.9	Dark	Up	48.4	243.2	Up	13:02:16 - 13:32:16	10928
Penticton	13:17:16	-19.8	Dark	Up	48.4	243.4	Up	13:02:16 - 13:32:16	10924
Oliver	13:17:16	-19.8	Dark	Up	48.5	243.8	Up	13:02:16 - 13:32:16	10893
Anarchist Mountain Observatory	13:17:14	-19.6	Dark	Up	48.5	244.1	Up	13:02:14 - 13:32:14	10882
Okanogan	13:17:13	-19.7	Dark	Up	48.9	244.5	Up	13:02:13 - 13:32:13	10820
Brewster	13:17:12	-19.8	Dark	Up	49.2	244.6	Up	13:02:12 - 13:32:12	10791
Manson/Chelan	13:17:13	-20.0	Dark	Up	49.5	244.4	Up	13:02:13 - 13:32:13	10765
Victoria	13:17:26	-22.2	Dark	Up	51.1	240.2	Up	13:02:26 - 13:32:26	10755
Wenatchee	13:17:11	-20.0	Dark	Up	49.8	244.7	Up	13:02:11 - 13:32:11	10718
Ellensburg	13:17:12	-20.1	Dark	Up	50.1	245.0	Up	13:02:12 - 13:32:12	10676
Yakima	13:17:10	-20.1	Dark	Up	50.3	245.4	Up	13:02:10 - 13:32:10	10639
Toppenish/White Swan	13:17:09	-19.9	Dark	Up	50.3	245.8	Up	13:02:09 - 13:32:09	10623
PNWRO	13:17:03	-18.8	Dark	Up	49.5	247.7	Up	13:02:03 - 13:32:03	10622
The Dalles	13:17:09	-20.3	Dark	Up	51.1	245.8	Up	13:02:09 - 13:32:09	10534
Maupin	13:17:07	-20.2	Dark	Up	51.2	246.4	Up	13:02:07 - 13:32:07	10497
Dunrhomin	13:16:03	-7.8	NT	Up	41.2	265.0	Up	13:01:03 - 13:31:03	10448
Nikitin	13:16:03	-7.8	NT	Up	41.3	265.1	Up	13:01:03 - 13:31:03	10431
CU-SBO	13:16:02	-7.8	NT	Up	41.3	265.1	Up	13:01:02 - 13:31:02	10423
Sisters	13:17:07	-20.4	Dark	Up	51.9	246.9	Up	13:02:07 - 13:32:07	10405
Bend	13:17:05	-20.2	Dark	Up	51.8	247.4	Up	13:02:05 - 13:32:05	10388
Oregon Observatory	13:17:05	-20.3	Dark	Up	51.9	247.5	Up	13:02:05 - 13:32:05	10369
Chiloquin	13:17:02	-20.3	Dark	Up	52.7	248.6	Up	13:02:02 - 13:32:02	10235
Klamath Falls	13:17:02	-20.2	Dark	Up	52.8	249.1	Up	13:02:02 - 13:32:02	10204
Cedarville	13:16:54	-19.0	Dark	Up	51.9	251.5	Up	13:01:54 - 13:31:54	10174
Fall River/Burney	13:16:57	-19.8	Dark	Up	52.9	251.0	Up	13:01:57 - 13:31:57	10099
Gimple	13:16:52	-19.2	Dark	Up	52.9	252.6	Up	13:01:52 - 13:31:52	10024
Greenville	13:16:53	-19.3	Dark	Up	52.9	252.5	Up	13:01:53 - 13:31:53	10022
Quincy	13:16:52	-19.2	Dark	Up	53.0	252.8	Up	13:01:52 - 13:31:52	10002
Portola	13:16:51	-18.8	Dark	Up	52.7	253.4	Up	13:01:51 - 13:31:51	10002
Reno	13:16:47	-18.3	Dark	Up	52.3	254.3	Up	13:01:47 - 13:31:47	9992
Carson City	13:16:45	-18.2	Dark	Up	52.4	254.7	Up	13:01:45 - 13:31:45	9957
Yerington	13:16:43	-17.7	AT	Up	51.9	255.5	Up	13:01:43 - 13:31:43	9954
Gardnerville	13:16:45	-18.1	Dark	Up	52.4	255.1	Up	13:01:45 - 13:31:45	9935
Hawthorne	13:16:40	-17.2	AT	Up	51.7	256.6	Up	13:01:40 - 13:31:40	9922
Lee Vining	13:16:41	-17.5	AT	Up	52.2	256.9	Up	13:01:41 - 13:31:41	9855
Bishop	13:16:36	-16.8	AT	Up	51.7	258.2	Up	13:01:36 - 13:31:36	9814
Beatty	13:16:29	-15.4	AT	Up	50.6	260.0	Up	13:01:29 - 13:31:29	9811
Patrick	13:16:15	-12.8	AT	Up	48.5	263.8	Up	13:01:15 - 13:31:15	9743
Laughlin/Bullhead City	13:16:17	-13.3	AT	Up	49.1	263.6	Up	13:01:17 - 13:31:17	9699
Lake Havasu City	13:16:14	-12.9	AT	Up	49.0	264.5	Up	13:01:14 - 13:31:14	9640
George/Scottsdale	13:16:03	-10.8	NT	Up	47.0	266.9	Up	13:01:03 - 13:31:03	9634
Idyllwild	13:16:20	-14.6	AT	Up	51.0	263.9	Up	13:01:20 - 13:31:20	9499
Wildwood	13:16:28	-16.2	AT	Up	52.5	262.1	Up	13:01:28 - 13:31:28	9484
Calipatria	13:16:14	-13.5	AT	Up	50.1	265.4	Up	13:01:14 - 13:31:14	9470
Yuma	13:16:10	-12.7	AT	Up	49.4	266.4	Up	13:01:10 - 13:31:10	9452

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 524834, (2024/11/23 13:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 13.52  44
Alhena         06:37:42.8 +16:23:57  1.9  6.56  59
36 Gem         06:51:33.0 +21:45:39  5.3  0.31  55
PPM 096732     06:55:04.4 +22:33:37  8.0  0.93  55
36 Gem         06:51:33.0 +21:45:39  5.3  0.31  55
524834         06:51:39.5 +22:04:17 16.6        55
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:40:58 UT

RECON