RECON: TNO occultation with 79969

Event between (79969) 99CP133 and star GA0760:04827640 with event index number of 2436790

Geocentric closest approach at 2025/06/23 04:14:04 UTC

J2000 position of star is 13:36:32.3 -12:51:47
Equinox of date position of star is 13:37:50.5 -12:59:14
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 7% illuminated.
Apparent brightness V=23.2

[RECON map]
Object is 34.0 AU from the Sun and 33.6 AU from the Earth.
Apparent velocity is 7.6 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 414 seconds.
The 1-sigma cross-track error in the shadow position is 1761 km.
The sky-plane scale is 24343.4 km/arcsec.

The object has an absolute magnitude Hv=7.7
Diameter=170.6 km assuming a 5% albedo -- 22.5 sec chord
Diameter=69.7 km assuming a 30% albedo -- 9.2 sec chord
Dynamical classification is 5:4E
 
 
 
 
 
 

Star training set for 79969, (2025/06/23 04:14UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:32.3 -11:17:36  1.0  3.25 143
PPM 227511     13:36:02.0 -13:20:39  6.4  0.57 146
PPM 227568     13:38:17.6 -12:43:06  9.5  0.29 146
79969          13:37:53.8 -12:59:32 16.4       147
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 2.2 sigma about the mid-time.
The median site spacing is **** km RECON observability=0.1 and success probability=0.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	04:16:39	-5.9	CT	Down	21.4	207.0	Low	04:01:39 - 04:31:39	11988
Dunrhomin	04:15:14	-15.3	AT	Down	31.6	210.2	Up	04:00:14 - 04:30:14	11592
Nikitin	04:15:15	-15.5	AT	Down	31.8	210.3	Up	04:00:15 - 04:30:15	11583
CU-SBO	04:15:14	-15.5	AT	Down	31.9	210.2	Up	04:00:14 - 04:30:14	11578
Kamloops	04:18:17	-0.8	CT	Down	25.7	192.6	Low	04:03:17 - 04:33:17	11557
Kelowna	04:18:03	-1.8	CT	Down	26.3	193.6	Low	04:03:03 - 04:33:03	11554
Peachland	04:18:00	-1.7	CT	Down	26.5	193.3	Low	04:03:00 - 04:33:00	11541
Penticton	04:17:58	-1.9	CT	Down	26.7	193.5	Low	04:02:58 - 04:32:58	11539
Summerland	04:18:01	-1.8	CT	Down	26.6	193.4	Low	04:03:01 - 04:33:01	11538
Anarchist Mountain Observatory	04:18:03	-2.4	CT	Down	27.1	193.8	Low	04:03:03 - 04:33:03	11526
Oliver	04:18:03	-2.2	CT	Down	27.0	193.6	Low	04:03:03 - 04:33:03	11526
Okanogan	04:17:51	-2.7	CT	Down	27.8	193.6	Low	04:02:51 - 04:32:51	11494
Brewster	04:17:54	-2.8	CT	Down	28.1	193.4	Low	04:02:54 - 04:32:54	11476
Manson/Chelan	04:17:56	-2.7	CT	Down	28.4	193.1	Low	04:02:56 - 04:32:56	11457
Wenatchee	04:17:56	-2.9	CT	Down	28.8	193.0	Low	04:02:56 - 04:32:56	11432
PNWRO	04:17:33	-4.5	CT	Down	30.0	194.6	Low	04:02:33 - 04:32:33	11419
Ellensburg	04:17:53	-3.1	CT	Down	29.3	192.7	Low	04:02:53 - 04:32:53	11408
Yakima	04:17:53	-3.3	CT	Down	29.7	192.8	Low	04:02:53 - 04:32:53	11390
Toppenish/White Swan	04:17:53	-3.5	CT	Down	29.9	193.0	Low	04:02:53 - 04:32:53	11386
Victoria	04:18:21	-0.7	Sun up	Down	28.1	189.5	Low	04:03:21 - 04:33:21	11378
The Dalles	04:17:52	-3.6	CT	Down	30.7	192.2	Up	04:02:52 - 04:32:52	11326
Maupin	04:17:48	-3.9	CT	Down	31.1	192.4	Up	04:02:48 - 04:32:48	11311
Sisters	04:17:48	-4.2	CT	Down	32.1	191.9	Up	04:02:48 - 04:32:48	11254
Bend	04:17:45	-4.5	CT	Down	32.3	192.2	Up	04:02:45 - 04:32:45	11251
Oregon Observatory	04:17:44	-4.5	CT	Down	32.5	192.1	Up	04:02:44 - 04:32:44	11239
Cedarville	04:17:21	-6.7	NT	Down	34.6	193.8	Up	04:02:21 - 04:32:21	11168
Chiloquin	04:17:42	-5.1	CT	Down	33.8	191.8	Up	04:02:42 - 04:32:42	11160
Klamath Falls	04:17:39	-5.4	CT	Down	34.1	191.9	Up	04:02:39 - 04:32:39	11146
Fall River/Burney	04:17:23	-6.3	NT	Down	35.2	192.4	Up	04:02:23 - 04:32:23	11099
Reno	04:17:03	-8.1	NT	Down	36.4	194.5	Up	04:02:03 - 04:32:03	11078
Yerington	04:16:59	-8.9	NT	Down	36.8	195.3	Up	04:01:59 - 04:31:59	11072
Gimple	04:17:20	-7.2	NT	Down	36.0	193.2	Up	04:02:20 - 04:32:20	11071
Portola	04:17:10	-7.6	NT	Down	36.3	193.7	Up	04:02:10 - 04:32:10	11068
Greenville	04:17:21	-7.1	NT	Down	36.0	193.1	Up	04:02:21 - 04:32:21	11068
Hawthorne	04:16:48	-9.5	NT	Down	37.2	196.0	Up	04:01:48 - 04:31:48	11066
Patrick	04:15:43	-14.2	AT	Down	39.0	202.2	Up	04:00:43 - 04:30:43	11063
Carson City	04:17:00	-8.4	NT	Down	36.8	194.5	Up	04:02:00 - 04:32:00	11059
Quincy	04:17:19	-7.3	NT	Down	36.2	193.1	Up	04:02:19 - 04:32:19	11057
Gardnerville	04:17:00	-8.5	NT	Down	37.0	194.7	Up	04:02:00 - 04:32:00	11048
Beatty	04:16:22	-11.6	NT	Down	38.3	198.5	Up	04:01:22 - 04:31:22	11044
George/Scottsdale	04:15:15	-16.5	AT	Down	39.9	205.0	Up	04:00:15 - 04:30:15	11036
Laughlin/Bullhead City	04:15:50	-14.0	AT	Down	39.4	201.4	Up	04:00:50 - 04:30:50	11023
Lee Vining	04:16:51	-9.5	NT	Down	37.8	195.6	Up	04:01:51 - 04:31:51	11017
Bishop	04:16:33	-10.3	NT	Down	38.3	196.5	Up	04:01:33 - 04:31:33	11010
Lake Havasu City	04:15:41	-14.6	AT	Down	39.9	201.9	Up	04:00:41 - 04:30:41	10994
Yuma	04:15:34	-15.6	AT	Down	41.7	202.1	Up	04:00:34 - 04:30:34	10875
Calipatria	04:15:39	-14.7	AT	Down	41.6	200.8	Up	04:00:39 - 04:30:39	10868
Idyllwild	04:16:02	-13.6	AT	Down	41.3	199.3	Up	04:01:02 - 04:31:02	10862
Wildwood	04:16:22	-12.3	AT	Down	41.5	196.9	Up	04:01:22 - 04:31:22	10811

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 79969, (2025/06/23 04:14UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  3.25 143
PPM 227511     13:34:40.4 -13:12:52  6.4  0.57 146
PPM 227568     13:36:56.1 -12:35:21  9.5  0.29 146
79969          13:36:32.3 -12:51:47 16.4       146
Positions are for J2000

Event circumstances last updated at 2024/06/13 03:56:15 UT

RECON