RECON: TNO occultation with 90568

Event between (90568) 04GV9 and star GA0660:06868696 with event index number of 2309307

Geocentric closest approach at 2028/06/27 04:34:11 UTC

J2000 position of star is 15:58:13.5 -23:38:32
Equinox of date position of star is 15:59:41.1 -23:42:39
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 87 degrees from the moon. Moon is 24% illuminated.
Apparent brightness V=20.1

[RECON map]
Object is 40.1 AU from the Sun and 39.3 AU from the Earth.
Apparent velocity is 20.2 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 112 seconds.
The 1-sigma cross-track error in the shadow position is 1609 km.
The sky-plane scale is 28501.2 km/arcsec.

The object has an absolute magnitude Hv=4.0
Diameter=946.3 km assuming a 5% albedo -- 47.9 sec chord
Diameter=386.3 km assuming a 30% albedo -- 19.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 90568, (2028/06/27 04:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.5 -26:29:33  0.9  7.59  94
7Del Sco       16:02:01.4 -22:42:01  2.3  1.13  87
PPM 264830     15:55:38.0 -24:03:39  5.4  1.04  86
PPM 264924     15:59:30.7 -23:36:27  7.1  0.15  87
90568          15:59:55.5 -23:43:19 16.1        87
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 30.6 km RECON observability=0.2 and success probability=0.1%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	04:35:53	-7.7	NT	Up	14.3	179.4	Really Low	04:26:04 - 04:45:43	4461
Dunrhomin	04:35:45	-17.7	AT	Up	26.1	180.0	Low	04:25:55 - 04:45:34	4049
Kamloops	04:36:38	-3.0	CT	Up	14.5	165.9	Really Low	04:26:49 - 04:46:28	4043
Nikitin	04:35:44	-17.8	AT	Up	26.3	180.0	Low	04:25:55 - 04:45:34	4040
Kelowna	04:36:36	-4.0	CT	Up	15.4	166.7	Really Low	04:26:47 - 04:46:26	4039
CU-SBO	04:35:46	-17.9	AT	Up	26.4	179.9	Low	04:25:56 - 04:45:35	4035
Peachland	04:36:37	-3.9	CT	Up	15.5	166.4	Really Low	04:26:48 - 04:46:27	4026
Penticton	04:36:37	-4.2	CT	Up	15.7	166.6	Really Low	04:26:47 - 04:46:26	4024
Summerland	04:36:37	-4.1	CT	Up	15.7	166.5	Really Low	04:26:48 - 04:46:27	4023
Oliver	04:36:36	-4.4	CT	Up	16.1	166.5	Really Low	04:26:47 - 04:46:26	4010
Anarchist Mountain Observatory	04:36:37	-4.6	CT	Up	16.3	166.7	Really Low	04:26:47 - 04:46:26	4010
Okanogan	04:36:38	-5.0	CT	Up	16.9	166.4	Really Low	04:26:48 - 04:46:27	3977
Brewster	04:36:38	-5.1	CT	Up	17.1	166.2	Really Low	04:26:49 - 04:46:28	3960
Manson/Chelan	04:36:39	-5.0	CT	Up	17.3	165.9	Really Low	04:26:50 - 04:46:29	3941
Wenatchee	04:36:39	-5.3	CT	Up	17.7	165.7	Really Low	04:26:50 - 04:46:29	3916
PNWRO	04:36:36	-6.9	NT	Up	19.3	166.9	Really Low	04:26:46 - 04:46:25	3900
Ellensburg	04:36:41	-5.5	CT	Up	18.1	165.4	Really Low	04:26:51 - 04:46:30	3891
Yakima	04:36:41	-5.7	CT	Up	18.4	165.4	Really Low	04:26:52 - 04:46:31	3873
Toppenish/White Swan	04:36:40	-6.0	CT	Up	18.7	165.5	Really Low	04:26:50 - 04:46:29	3869
Victoria	04:36:49	-3.0	CT	Up	16.1	162.9	Really Low	04:26:59 - 04:46:38	3866
The Dalles	04:36:44	-6.1	NT	Up	19.3	164.7	Really Low	04:26:54 - 04:46:33	3809
Maupin	04:36:43	-6.4	NT	Up	19.7	164.8	Really Low	04:26:54 - 04:46:33	3793
Sisters	04:36:45	-6.8	NT	Up	20.5	164.2	Low	04:26:56 - 04:46:35	3736
Bend	04:36:45	-7.1	NT	Up	20.8	164.5	Low	04:26:55 - 04:46:34	3734
Oregon Observatory	04:36:45	-7.1	NT	Up	20.9	164.3	Low	04:26:56 - 04:46:35	3721
Cedarville	04:36:42	-9.4	NT	Up	23.4	165.3	Low	04:26:52 - 04:46:31	3647
Chiloquin	04:36:47	-7.8	NT	Up	22.1	163.8	Low	04:26:58 - 04:46:37	3642
Klamath Falls	04:36:47	-8.0	NT	Up	22.4	163.8	Low	04:26:58 - 04:46:37	3628
Fall River/Burney	04:36:45	-9.0	NT	Up	23.6	164.1	Low	04:26:56 - 04:46:35	3580
Reno	04:36:40	-10.9	NT	Up	25.4	165.4	Low	04:26:51 - 04:46:30	3555
Gimple	04:36:44	-9.9	NT	Up	24.6	164.5	Low	04:26:55 - 04:46:34	3550
Yerington	04:36:37	-11.7	NT	Up	26.1	166.0	Low	04:26:48 - 04:46:27	3548
Greenville	04:36:45	-9.9	NT	Up	24.6	164.4	Low	04:26:55 - 04:46:34	3547
Portola	04:36:42	-10.4	NT	Up	25.0	164.8	Low	04:26:52 - 04:46:31	3547
Hawthorne	04:36:35	-12.3	AT	Up	26.6	166.4	Low	04:26:46 - 04:46:25	3541
Quincy	04:36:44	-10.0	NT	Up	24.8	164.4	Low	04:26:55 - 04:46:34	3536
Carson City	04:36:40	-11.2	NT	Up	25.8	165.4	Low	04:26:50 - 04:46:29	3536
Patrick	04:36:16	-17.1	AT	Up	30.4	170.9	Up	04:26:27 - 04:46:06	3530
Gardnerville	04:36:39	-11.4	NT	Up	26.0	165.4	Low	04:26:50 - 04:46:29	3524
Beatty	04:36:28	-14.5	AT	Up	28.5	168.1	Low	04:26:39 - 04:46:18	3515
George/Scottsdale	04:36:07	-19.5	Dark	Up	32.3	172.9	Up	04:26:17 - 04:45:56	3499
Lee Vining	04:36:38	-12.4	AT	Up	27.1	165.9	Low	04:26:48 - 04:46:27	3493
Laughlin/Bullhead City	04:36:19	-16.9	AT	Up	30.5	170.2	Up	04:26:30 - 04:46:09	3491
Bishop	04:36:34	-13.2	AT	Up	27.8	166.5	Low	04:26:45 - 04:46:24	3484
Lake Havasu City	04:36:17	-17.6	AT	Up	31.2	170.4	Up	04:26:28 - 04:46:07	3460
Yuma	04:36:18	-18.7	Dark	Up	33.0	169.8	Up	04:26:29 - 04:46:08	3341
Calipatria	04:36:22	-17.8	AT	Up	32.4	169.0	Up	04:26:32 - 04:46:11	3335
Idyllwild	04:36:27	-16.7	AT	Up	31.6	167.8	Up	04:26:38 - 04:46:17	3331
Wildwood	04:36:34	-15.3	AT	Up	30.9	165.9	Up	04:26:45 - 04:46:24	3283

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 90568, (2028/06/27 04:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.59  94
7Del Sco       16:00:20.0 -22:37:19  2.3  1.13  87
PPM 264830     15:53:55.9 -23:58:42  5.4  1.04  86
PPM 264924     15:57:48.8 -23:31:39  7.1  0.15  87
90568          15:58:13.5 -23:38:32 16.1        87
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:30:22 UT

RECON