RECON: TNO occultation with 04VM131

Event between 04VM131 and star GA1020:01688008 with event index number of 1985734

Geocentric closest approach at 2023/12/12 09:40:27 UTC

J2000 position of star is 06:20:20.2 +12:25:21
Equinox of date position of star is 06:21:40.5 +12:24:37
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 153 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=24.0

[RECON map]
Object is 35.9 AU from the Sun and 34.9 AU from the Earth.
Apparent velocity is 24.5 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 713 seconds.
The 1-sigma cross-track error in the shadow position is 3522 km.
The sky-plane scale is 25327.0 km/arcsec.

The object has an absolute magnitude Hv=8.4
Diameter=127.6 km assuming a 5% albedo -- 5.2 sec chord
Diameter=52.1 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 04VM131, (2023/12/12 09:40UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.1 +07:24:34  0.4  7.97 155
Alhena         06:39:05.7 +16:22:36  1.9  5.79 152
PPM 122364     06:23:57.1 +12:33:24  6.4  0.57 153
PPM 122290     06:20:55.1 +12:26:33  8.2  0.19 153
04VM131        06:21:40.8 +12:24:37 15.6       153
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 1.3 sigma about the mid-time.
The median site spacing is 35.7 km RECON observability=1.0 and success probability=15.9%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	09:39:12	-47.6	Dark	Down	45.7	215.6	Up	09:24:12 - 09:54:12	1407
Kamloops	09:39:50	-55.7	Dark	Down	50.8	196.1	Up	09:24:50 - 09:54:50	1272
Kelowna	09:39:47	-55.8	Dark	Down	51.4	197.8	Up	09:24:47 - 09:54:47	1200
Peachland	09:39:47	-56.1	Dark	Down	51.6	197.4	Up	09:24:47 - 09:54:47	1190
Summerland	09:39:47	-56.1	Dark	Down	51.7	197.6	Up	09:24:47 - 09:54:47	1177
Penticton	09:39:47	-56.1	Dark	Down	51.8	197.8	Up	09:24:47 - 09:54:47	1171
Oliver	09:39:47	-56.3	Dark	Down	52.1	197.9	Up	09:24:47 - 09:54:47	1139
Anarchist Mountain Observatory	09:39:46	-56.4	Dark	Down	52.2	198.3	Up	09:24:46 - 09:54:46	1124
Victoria	09:39:58	-58.6	Dark	Down	53.4	192.1	Up	09:24:58 - 09:54:58	1085
Okanogan	09:39:46	-56.9	Dark	Down	52.9	198.2	Up	09:24:46 - 09:54:46	1066
Brewster	09:39:47	-57.2	Dark	Down	53.2	198.0	Up	09:24:47 - 09:54:47	1041
Manson/Chelan	09:39:48	-57.5	Dark	Down	53.5	197.5	Up	09:24:48 - 09:54:48	1023
Wenatchee	09:39:48	-57.9	Dark	Down	53.9	197.4	Up	09:24:48 - 09:54:48	980
Ellensburg	09:39:49	-58.3	Dark	Down	54.4	197.2	Up	09:24:49 - 09:54:49	942
Yakima	09:39:48	-58.5	Dark	Down	54.8	197.3	Up	09:24:48 - 09:54:48	905
Toppenish/White Swan	09:39:48	-58.6	Dark	Down	54.9	197.7	Up	09:24:48 - 09:54:48	885
PNWRO	09:39:43	-58.0	Dark	Down	55.0	200.3	Up	09:24:43 - 09:54:43	849
The Dalles	09:39:50	-59.5	Dark	Down	55.9	196.7	Up	09:24:50 - 09:54:50	813
Maupin	09:39:50	-59.7	Dark	Down	56.2	197.1	Up	09:24:50 - 09:54:50	774
Sisters	09:39:51	-60.5	Dark	Down	57.2	196.6	Up	09:24:51 - 09:54:51	692
Bend	09:39:50	-60.5	Dark	Down	57.4	197.2	Up	09:24:50 - 09:54:50	669
Oregon Observatory	09:39:50	-60.7	Dark	Down	57.5	197.0	Up	09:24:50 - 09:54:50	653
Chiloquin	09:39:51	-61.7	Dark	Down	58.9	196.9	Up	09:24:51 - 09:54:51	528
Klamath Falls	09:39:51	-61.9	Dark	Down	59.2	197.2	Up	09:24:51 - 09:54:51	494
Cedarville	09:39:46	-61.3	Dark	Down	59.5	200.6	Up	09:24:46 - 09:54:46	425
Fall River/Burney	09:39:50	-62.3	Dark	Down	60.2	198.6	Up	09:24:50 - 09:54:50	379
Dunrhomin	09:38:56	-51.4	Dark	Down	54.4	225.8	Up	09:23:56 - 09:53:56	317
Nikitin	09:38:56	-51.5	Dark	Down	54.5	226.0	Up	09:23:56 - 09:53:56	299
CU-SBO	09:38:56	-51.5	Dark	Down	54.6	225.9	Up	09:23:56 - 09:53:56	293
Greenville	09:39:48	-62.5	Dark	Down	61.0	199.9	Up	09:24:48 - 09:54:48	289
Gimple	09:39:48	-62.4	Dark	Down	61.0	200.1	Up	09:24:48 - 09:54:48	289
Quincy	09:39:48	-62.6	Dark	Down	61.2	200.1	Up	09:24:48 - 09:54:48	269
Portola	09:39:46	-62.3	Dark	Down	61.2	201.1	Up	09:24:46 - 09:54:46	256
Reno	09:39:44	-62.0	Dark	Down	61.2	202.5	Up	09:24:44 - 09:54:44	229
Carson City	09:39:44	-62.2	Dark	Down	61.6	202.8	Up	09:24:44 - 09:54:44	194
Yerington	09:39:41	-61.8	Dark	Down	61.5	204.1	Up	09:24:41 - 09:54:41	174
Gardnerville	09:39:43	-62.2	Dark	Down	61.8	203.0	Up	09:24:43 - 09:54:43	169
Hawthorne	09:39:39	-61.7	Dark	Down	61.8	205.5	Up	09:24:39 - 09:54:39	127
Lee Vining	09:39:41	-62.2	Dark	Down	62.5	205.0	Up	09:24:41 - 09:54:41	71
Bishop	09:39:38	-62.0	Dark	Down	62.8	206.9	Up	09:24:38 - 09:54:38	10
Beatty	09:39:32	-60.9	Dark	Down	62.5	210.5	Up	09:24:32 - 09:54:32	-38
Patrick	09:39:21	-59.2	Dark	Down	62.5	217.5	Up	09:24:21 - 09:54:21	-188
Laughlin/Bullhead City	09:39:24	-59.8	Dark	Down	63.0	216.5	Up	09:24:24 - 09:54:24	-214
Lake Havasu City	09:39:23	-59.8	Dark	Down	63.4	217.7	Up	09:24:23 - 09:54:23	-283
Wildwood	09:39:38	-63.2	Dark	Down	65.7	209.7	Up	09:24:38 - 09:54:38	-324
George/Scottsdale	09:39:13	-57.9	Dark	Down	62.7	223.1	Up	09:24:13 - 09:54:13	-361
Idyllwild	09:39:31	-61.8	Dark	Down	65.2	214.1	Up	09:24:31 - 09:54:31	-362
Calipatria	09:39:26	-61.0	Dark	Down	65.1	217.2	Up	09:24:26 - 09:54:26	-426
Yuma	09:39:23	-60.4	Dark	Down	65.0	219.5	Up	09:24:23 - 09:54:23	-470

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 04VM131, (2023/12/12 09:40UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  7.97 155
Alhena         06:37:42.8 +16:23:57  1.9  5.79 152
PPM 122364     06:22:36.3 +12:34:12  6.4  0.57 153
PPM 122290     06:19:34.4 +12:27:15  8.2  0.19 153
04VM131        06:20:20.2 +12:25:21 15.6       153
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:07:16 UT

RECON