RECON: TNO occultation with 500886

Event between (500886) 13JN65 and star GA0720:06176174 with event index number of 2336204

Geocentric closest approach at 2023/07/27 05:13:56 UTC

J2000 position of star is 16:28:00.1 -17:53:04
Equinox of date position of star is 16:29:21.0 -17:56:05
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 20 degrees from the moon. Moon is 63% illuminated.
Apparent brightness V=23.8

[RECON map]
Object is 41.2 AU from the Sun and 40.6 AU from the Earth.
Apparent velocity is 12.5 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 305 seconds.
The 1-sigma cross-track error in the shadow position is 2563 km.
The sky-plane scale is 29423.0 km/arcsec.

The object has an absolute magnitude Hv=7.5
Diameter=199.5 km assuming a 5% albedo -- 15.3 sec chord
Diameter=81.5 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 500886, (2023/07/27 05:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.4 -26:28:56  0.9  8.55  21
8Bet1Sco       16:06:48.7 -19:52:05  2.6  5.67  14
7Chi Oph       16:28:23.6 -18:30:28  4.1  0.62  19
PPM 231727     16:29:22.1 -17:53:43  8.4  0.04  20
500886         16:29:21.9 -17:56:07 16.5        20
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 3.0 sigma about the mid-time.
The median site spacing is 22.6 km RECON observability=0.6 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)
Kamloops	05:11:50	-10.1	NT	Up	20.1	195.4	Low	04:56:50 - 05:26:50	9464
Kelowna	05:11:42	-11.0	NT	Up	20.8	196.4	Low	04:56:42 - 05:26:42	9417
Peachland	05:11:44	-11.0	NT	Up	20.9	196.1	Low	04:56:44 - 05:26:44	9416
Summerland	05:11:43	-11.2	NT	Up	21.1	196.2	Low	04:56:43 - 05:26:43	9408
Penticton	05:11:43	-11.2	NT	Up	21.1	196.3	Low	04:56:43 - 05:26:43	9404
Victoria	05:12:04	-10.3	NT	Up	22.7	192.6	Low	04:57:04 - 05:27:04	9404
Oliver	05:11:42	-11.5	NT	Up	21.4	196.4	Low	04:56:42 - 05:26:42	9387
Anarchist Mountain Observatory	05:11:42	-11.7	NT	Up	21.6	196.6	Low	04:56:42 - 05:26:42	9378
Okanogan	05:11:42	-12.1	AT	Up	22.2	196.4	Low	04:56:42 - 05:26:42	9349
Brewster	05:11:43	-12.2	AT	Up	22.5	196.3	Low	04:56:43 - 05:26:43	9339
Manson/Chelan	05:11:46	-12.2	AT	Up	22.8	195.9	Low	04:56:46 - 05:26:46	9334
Sleaford	05:10:42	-14.0	AT	Up	15.5	209.0	Really Low	04:55:42 - 05:25:42	9324
Wenatchee	05:11:44	-12.5	AT	Up	23.3	195.8	Low	04:56:44 - 05:26:44	9313
Ellensburg	05:11:45	-12.7	AT	Up	23.7	195.6	Low	04:56:45 - 05:26:45	9296
Yakima	05:11:44	-13.0	AT	Up	24.1	195.7	Low	04:56:44 - 05:26:44	9275
Toppenish/White Swan	05:11:43	-13.2	AT	Up	24.3	195.9	Low	04:56:43 - 05:26:43	9262
The Dalles	05:11:47	-13.4	AT	Up	25.2	195.2	Low	04:56:47 - 05:26:47	9232
PNWRO	05:11:34	-14.2	AT	Up	24.4	197.4	Low	04:56:34 - 05:26:34	9223
Maupin	05:11:46	-13.8	AT	Up	25.6	195.3	Low	04:56:46 - 05:26:46	9209
Sisters	05:11:49	-14.2	AT	Up	26.5	194.9	Low	04:56:49 - 05:26:49	9169
Bend	05:11:46	-14.5	AT	Up	26.7	195.2	Low	04:56:46 - 05:26:46	9153
Oregon Observatory	05:11:46	-14.5	AT	Up	26.9	195.1	Low	04:56:46 - 05:26:46	9146
Chiloquin	05:11:48	-15.3	AT	Up	28.2	194.8	Low	04:56:48 - 05:26:48	9078
Klamath Falls	05:11:47	-15.6	AT	Up	28.6	195.0	Low	04:56:47 - 05:26:47	9057
Cedarville	05:11:37	-16.9	AT	Up	28.9	196.7	Low	04:56:37 - 05:26:37	8995
Fall River/Burney	05:11:46	-16.6	AT	Up	29.6	195.5	Low	04:56:46 - 05:26:46	8983
Greenville	05:11:42	-17.5	AT	Up	30.4	196.2	Up	04:56:42 - 05:26:42	8922
Gimple	05:11:40	-17.5	AT	Up	30.4	196.2	Up	04:56:40 - 05:26:40	8921
Quincy	05:11:41	-17.6	AT	Up	30.6	196.2	Up	04:56:41 - 05:26:41	8910
Portola	05:11:37	-18.0	AT	Up	30.6	196.7	Up	04:56:37 - 05:26:37	8896
Reno	05:11:32	-18.5	Dark	Up	30.7	197.4	Up	04:56:32 - 05:26:32	8870
Carson City	05:11:33	-18.8	Dark	Up	31.1	197.5	Up	04:56:33 - 05:26:33	8847
Gardnerville	05:11:32	-19.0	Dark	Up	31.3	197.6	Up	04:56:32 - 05:26:32	8831
Yerington	05:11:27	-19.2	Dark	Up	31.1	198.2	Up	04:56:27 - 05:26:27	8825
Hawthorne	05:11:25	-19.9	Dark	Up	31.4	198.9	Up	04:56:25 - 05:26:25	8788
Lee Vining	05:11:27	-20.0	Dark	Up	32.1	198.5	Up	04:56:27 - 05:26:27	8759
Bishop	05:11:22	-20.8	Dark	Up	32.5	199.3	Up	04:56:22 - 05:26:22	8709
Dunrhomin	05:10:07	-24.5	Dark	Up	25.5	211.8	Low	04:55:07 - 05:25:07	8660
Beatty	05:11:11	-22.0	Dark	Up	32.5	201.2	Up	04:56:11 - 05:26:11	8651
Nikitin	05:10:07	-24.7	Dark	Up	25.7	211.8	Low	04:55:07 - 05:25:07	8648
CU-SBO	05:10:06	-24.7	Dark	Up	25.8	211.8	Low	04:55:06 - 05:25:06	8646
Patrick	05:10:50	-24.6	Dark	Up	32.9	204.5	Up	04:55:50 - 05:25:50	8500
Laughlin/Bullhead City	05:10:55	-24.5	Dark	Up	33.4	203.9	Up	04:55:55 - 05:25:55	8495
Wildwood	05:11:20	-23.1	Dark	Up	35.6	199.9	Up	04:56:20 - 05:26:20	8489
Lake Havasu City	05:10:53	-25.1	Dark	Up	33.9	204.3	Up	04:55:53 - 05:25:53	8443
Idyllwild	05:11:07	-24.4	Dark	Up	35.4	202.0	Up	04:56:07 - 05:26:07	8433
Calipatria	05:10:58	-25.5	Dark	Up	35.6	203.4	Up	04:55:58 - 05:25:58	8367
George/Scottsdale	05:10:35	-27.0	Dark	Up	33.8	207.1	Up	04:55:35 - 05:25:35	8342
Yuma	05:10:53	-26.3	Dark	Up	35.7	204.5	Up	04:55:53 - 05:25:53	8319

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 500886, (2023/07/27 05:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.55  21
8Bet1Sco       16:05:26.2 -19:48:20  2.6  5.67  14
7Chi Oph       16:27:01.4 -18:27:23  4.1  0.62  19
PPM 231727     16:28:00.3 -17:50:40  8.4  0.04  20
500886         16:28:00.1 -17:53:04 16.5        20
Positions are for J2000

Event circumstances last updated at 2023/04/19 02:42:21 UT

RECON