RECON: TNO occultation with 38628

Event between (38628) Huya and star GA0800:08698311 with event index number of 2433267

Geocentric closest approach at 2028/02/25 12:57:12 UTC

J2000 position of star is 18:12:59.5 -08:28:52
Equinox of date position of star is 18:14:19.6 -08:28:23
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 64 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=19.7

[RECON map]
Object is 29.6 AU from the Sun and 30.0 AU from the Earth.
Apparent velocity is 21.2 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 113 seconds.
The 1-sigma cross-track error in the shadow position is 1522 km.
The sky-plane scale is 21790.9 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=648.7 km assuming a 5% albedo -- 31.1 sec chord
Diameter=264.8 km assuming a 30% albedo -- 12.7 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 38628, (2028/02/25 12:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:08.3 -26:29:31  0.9 30.41  88
60Bet Oph      17:44:51.9 +04:33:27  2.8 14.98  73
PPM 201392     18:07:39.4 -08:19:10  6.1  1.71  66
PPM 201496     18:13:33.7 -08:43:21  7.5  0.35  65
38628          18:14:31.6 -08:28:19 16.5        64
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 14.8 km RECON observability=0.9 and success probability=24.4%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	12:56:26	-19.4	Dark	Down	19.4	132.6	Really Low	12:46:30 - 13:06:22	1043
Kelowna	12:56:25	-19.0	Dark	Down	20.4	133.2	Low	12:46:29 - 13:06:21	1003
Peachland	12:56:24	-19.2	Dark	Down	20.3	132.9	Low	12:46:28 - 13:06:20	1002
Summerland	12:56:23	-19.1	Dark	Down	20.5	132.9	Low	12:46:27 - 13:06:19	995
Penticton	12:56:23	-19.1	Dark	Down	20.6	133.0	Low	12:46:27 - 13:06:19	991
Victoria	12:56:10	-21.8	Dark	Down	19.3	129.2	Really Low	12:46:14 - 13:06:06	987
Oliver	12:56:22	-19.1	Dark	Down	20.8	132.9	Low	12:46:26 - 13:06:18	977
Anarchist Mountain Observatory	12:56:22	-19.0	Dark	Down	21.0	133.1	Low	12:46:26 - 13:06:18	969
Okanogan	12:56:19	-19.3	Dark	Down	21.3	132.7	Low	12:46:23 - 13:06:15	944
Brewster	12:56:18	-19.4	Dark	Down	21.4	132.4	Low	12:46:22 - 13:06:14	935
Manson/Chelan	12:56:16	-19.7	Dark	Down	21.4	132.0	Low	12:46:20 - 13:06:12	930
Sleaford	12:57:08	-10.2	NT	Down	24.2	147.2	Low	12:47:12 - 13:07:04	918
Wenatchee	12:56:14	-19.9	Dark	Down	21.6	131.7	Low	12:46:18 - 13:06:10	912
Ellensburg	12:56:12	-20.1	Dark	Down	21.8	131.4	Low	12:46:16 - 13:06:08	896
Yakima	12:56:10	-20.2	Dark	Down	22.0	131.2	Low	12:46:14 - 13:06:06	878
Toppenish/White Swan	12:56:10	-20.1	Dark	Down	22.2	131.3	Low	12:46:14 - 13:06:06	867
The Dalles	12:56:05	-20.8	Dark	Down	22.3	130.3	Low	12:46:09 - 13:06:01	839
PNWRO	12:56:12	-19.1	Dark	Down	23.3	132.6	Low	12:46:16 - 13:06:08	834
Maupin	12:56:04	-20.8	Dark	Down	22.6	130.3	Low	12:46:08 - 13:06:00	819
Sisters	12:55:59	-21.3	Dark	Down	22.9	129.5	Low	12:46:03 - 13:05:55	783
Bend	12:55:59	-21.1	Dark	Down	23.2	129.7	Low	12:46:03 - 13:05:55	769
Oregon Observatory	12:55:58	-21.2	Dark	Down	23.3	129.5	Low	12:46:02 - 13:05:54	762
Chiloquin	12:55:52	-21.7	Dark	Down	23.8	128.7	Low	12:45:56 - 13:05:48	700
Klamath Falls	12:55:51	-21.7	Dark	Down	24.1	128.6	Low	12:45:55 - 13:05:47	682
Cedarville	12:55:53	-20.6	Dark	Down	25.5	129.8	Low	12:45:57 - 13:05:49	628
Fall River/Burney	12:55:48	-21.6	Dark	Down	25.1	128.5	Low	12:45:52 - 13:05:44	616
Greenville	12:55:46	-21.4	Dark	Down	25.9	128.6	Low	12:45:50 - 13:05:42	561
Gimple	12:55:46	-21.3	Dark	Down	25.9	128.6	Low	12:45:50 - 13:05:42	560
Quincy	12:55:45	-21.4	Dark	Down	26.0	128.5	Low	12:45:49 - 13:05:41	550
Portola	12:55:46	-21.0	Dark	Down	26.4	128.9	Low	12:45:50 - 13:05:42	538
Reno	12:55:47	-20.5	Dark	Down	26.9	129.3	Low	12:45:51 - 13:05:43	515
Carson City	12:55:46	-20.6	Dark	Down	27.2	129.2	Low	12:45:50 - 13:05:42	495
Gardnerville	12:55:45	-20.5	Dark	Down	27.4	129.2	Low	12:45:49 - 13:05:41	480
Yerington	12:55:47	-20.1	Dark	Down	27.7	129.7	Low	12:45:51 - 13:05:43	476
Hawthorne	12:55:48	-19.7	Dark	Down	28.3	130.0	Low	12:45:52 - 13:05:44	442
Lee Vining	12:55:44	-20.1	Dark	Down	28.3	129.3	Low	12:45:48 - 13:05:40	416
Bishop	12:55:44	-19.6	Dark	Down	29.2	129.7	Low	12:45:48 - 13:05:40	370
Dunrhomin	12:56:36	-9.1	NT	Down	34.2	144.1	Up	12:46:40 - 13:06:32	330
Beatty	12:55:48	-18.3	Dark	Down	30.5	131.0	Up	12:45:52 - 13:05:44	320
Nikitin	12:56:36	-9.2	NT	Down	34.4	144.0	Up	12:46:40 - 13:06:32	320
CU-SBO	12:56:35	-9.2	NT	Down	34.4	143.9	Up	12:46:39 - 13:06:31	317
Patrick	12:55:52	-16.0	AT	Down	33.2	133.0	Up	12:45:56 - 13:05:48	183
Laughlin/Bullhead City	12:55:49	-16.6	AT	Down	33.0	132.2	Up	12:45:53 - 13:05:45	178
Wildwood	12:55:33	-20.0	Dark	Down	31.1	128.0	Up	12:45:37 - 13:05:29	167
Lake Havasu City	12:55:48	-16.4	AT	Down	33.6	132.1	Up	12:45:52 - 13:05:44	131
Idyllwild	12:55:38	-18.4	Dark	Down	32.5	129.5	Up	12:45:42 - 13:05:34	118
Calipatria	12:55:40	-17.4	AT	Down	33.7	130.3	Up	12:45:44 - 13:05:36	58
George/Scottsdale	12:55:54	-14.3	AT	Down	35.6	134.1	Up	12:45:58 - 13:05:50	39
Yuma	12:55:41	-16.7	AT	Down	34.5	130.9	Up	12:45:45 - 13:05:37	15

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 38628, (2028/02/25 12:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 30.41  88
60Bet Oph      17:43:28.3 +04:34:06  2.8 14.98  73
PPM 201392     18:06:07.4 -08:19:27  6.1  1.71  66
PPM 201496     18:12:01.4 -08:43:52  7.5  0.35  65
38628          18:12:59.5 -08:28:52 16.5        64
Positions are for J2000

Event circumstances last updated at 2024/06/23 21:29:21 UT

RECON