RECON: TNO occultation with 05TV189

Event between 05TV189 and star GA0920:01550981 with event index number of 1958078

Geocentric closest approach at 2023/04/22 03:47:14 UTC

J2000 position of star is 06:33:38.7 +02:11:33
Equinox of date position of star is 06:34:51.5 +02:10:24
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 48 degrees from the moon. Moon is 5% illuminated.
Apparent brightness V=23.0

[RECON map]
Object is 32.9 AU from the Sun and 33.2 AU from the Earth.
Apparent velocity is 17.4 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 398 seconds.
The 1-sigma cross-track error in the shadow position is 4627 km.
The sky-plane scale is 24104.6 km/arcsec.

The object has an absolute magnitude Hv=7.6
Diameter=178.7 km assuming a 5% albedo -- 10.3 sec chord
Diameter=72.9 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05TV189, (2023/04/22 03:47UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:26.1 +07:24:34  0.4 10.91  37
Alhena         06:39:03.5 +16:22:39  1.9 14.24  43
PPM 150897     06:38:53.4 +02:40:56  6.2  1.13  48
PPM 150780     06:35:36.6 +02:30:52  7.9  0.39  48
PPM 150756     06:35:01.2 +02:07:55  9.4  0.06  48
05TV189        06:34:51.5 +02:10:24 15.0        48
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 2.3 sigma about the mid-time.
The median site spacing is 42.1 km RECON observability=0.3 and success probability=2.6%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	03:51:37	-7.3	NT	Up	26.4	237.4	Low	03:36:37 - 04:06:37	7650
Sleaford	03:52:05	-13.9	AT	Up	17.6	250.0	Really Low	03:37:05 - 04:07:05	7609
Kelowna	03:51:42	-8.3	NT	Up	26.3	238.7	Low	03:36:42 - 04:06:42	7563
Peachland	03:51:43	-8.1	NT	Up	26.5	238.4	Low	03:36:43 - 04:06:43	7557
Summerland	03:51:43	-8.3	NT	Up	26.6	238.6	Low	03:36:43 - 04:06:43	7542
Penticton	03:51:42	-8.4	NT	Up	26.5	238.7	Low	03:36:42 - 04:06:42	7534
Oliver	03:51:42	-8.5	NT	Up	26.7	238.9	Low	03:36:42 - 04:06:42	7501
Victoria	03:51:35	-6.6	NT	Up	29.2	235.5	Low	03:36:35 - 04:06:35	7501
Anarchist Mountain Observatory	03:51:44	-8.7	NT	Up	26.7	239.1	Low	03:36:44 - 04:06:44	7483
Okanogan	03:51:44	-8.9	NT	Up	27.1	239.2	Low	03:36:44 - 04:06:44	7426
Brewster	03:51:43	-9.0	NT	Up	27.4	239.1	Low	03:36:43 - 04:06:43	7403
Manson/Chelan	03:51:44	-8.8	NT	Up	27.7	238.9	Low	03:36:44 - 04:06:44	7389
Wenatchee	03:51:44	-9.0	NT	Up	28.1	238.9	Low	03:36:44 - 04:06:44	7348
Ellensburg	03:51:45	-9.0	NT	Up	28.4	238.9	Low	03:36:45 - 04:06:45	7312
Yakima	03:51:46	-9.2	NT	Up	28.6	239.1	Low	03:36:46 - 04:06:46	7274
Toppenish/White Swan	03:51:47	-9.4	NT	Up	28.6	239.4	Low	03:36:47 - 04:06:47	7250
PNWRO	03:51:50	-10.5	NT	Up	27.9	240.9	Low	03:36:50 - 04:06:50	7191
The Dalles	03:51:45	-9.3	NT	Up	29.5	239.0	Low	03:36:45 - 04:06:45	7189
Maupin	03:51:45	-9.6	NT	Up	29.7	239.3	Low	03:36:45 - 04:06:45	7147
Sisters	03:51:45	-9.7	NT	Up	30.4	239.3	Up	03:36:45 - 04:06:45	7071
Bend	03:51:46	-10.0	NT	Up	30.4	239.7	Up	03:36:46 - 04:06:46	7044
Oregon Observatory	03:51:46	-10.0	NT	Up	30.5	239.6	Up	03:36:46 - 04:06:46	7029
Chiloquin	03:51:47	-10.3	NT	Up	31.5	239.9	Up	03:36:47 - 04:06:47	6908
Klamath Falls	03:51:48	-10.5	NT	Up	31.6	240.2	Up	03:36:48 - 04:06:48	6873
Cedarville	03:51:53	-11.9	NT	Up	30.8	242.0	Up	03:36:53 - 04:06:53	6776
Fall River/Burney	03:51:50	-11.3	NT	Up	31.9	241.2	Up	03:36:50 - 04:06:50	6750
Greenville	03:51:54	-12.0	AT	Up	32.0	242.1	Up	03:36:54 - 04:06:54	6651
Gimple	03:51:52	-12.1	AT	Up	32.0	242.1	Up	03:36:52 - 04:06:52	6649
Quincy	03:51:54	-12.1	AT	Up	32.1	242.2	Up	03:36:54 - 04:06:54	6631
Portola	03:51:56	-12.5	AT	Up	31.8	242.7	Up	03:36:56 - 04:06:56	6610
Reno	03:51:57	-13.1	AT	Up	31.5	243.4	Up	03:36:57 - 04:06:57	6571
Carson City	03:51:58	-13.3	AT	Up	31.6	243.6	Up	03:36:58 - 04:06:58	6535
Gardnerville	03:51:57	-13.4	AT	Up	31.7	243.8	Up	03:36:57 - 04:06:57	6509
Yerington	03:52:00	-13.8	AT	Up	31.3	244.3	Up	03:37:00 - 04:07:00	6504
Hawthorne	03:52:01	-14.4	AT	Up	31.1	245.0	Up	03:37:01 - 04:07:01	6447
Dunrhomin	03:52:34	-22.1	Dark	Up	20.7	254.6	Low	03:37:34 - 04:07:34	6435
Nikitin	03:52:33	-22.2	Dark	Up	20.7	254.6	Low	03:37:33 - 04:07:33	6416
CU-SBO	03:52:33	-22.2	Dark	Up	20.8	254.6	Low	03:37:33 - 04:07:33	6410
Lee Vining	03:52:01	-14.3	AT	Up	31.7	244.9	Up	03:37:01 - 04:07:01	6398
Bishop	03:52:04	-15.1	AT	Up	31.4	245.8	Up	03:37:04 - 04:07:04	6324
Beatty	03:52:08	-16.5	AT	Up	30.4	247.4	Up	03:37:08 - 04:07:08	6248
Patrick	03:52:18	-19.3	Dark	Up	28.7	250.4	Low	03:37:18 - 04:07:18	6046
Laughlin/Bullhead City	03:52:19	-18.9	Dark	Up	29.3	250.0	Low	03:37:19 - 04:07:19	6031
Wildwood	03:52:05	-16.5	AT	Up	32.9	247.5	Up	03:37:05 - 04:07:05	5989
Lake Havasu City	03:52:18	-19.5	Dark	Up	29.4	250.5	Low	03:37:18 - 04:07:18	5956
Idyllwild	03:52:11	-18.1	Dark	Up	31.5	249.2	Up	03:37:11 - 04:07:11	5918
George/Scottsdale	03:52:27	-21.6	Dark	Up	27.6	252.7	Low	03:37:27 - 04:07:27	5836
Calipatria	03:52:17	-19.3	Dark	Up	30.8	250.4	Up	03:37:17 - 04:07:17	5832
Yuma	03:52:18	-20.2	Dark	Up	30.2	251.3	Up	03:37:18 - 04:07:18	5772

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 05TV189, (2023/04/22 03:47UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.91  37
Alhena         06:37:42.8 +16:23:57  1.9 14.24  43
PPM 150897     06:37:40.3 +02:42:14  6.2  1.13  48
PPM 150780     06:34:23.5 +02:32:03  7.9  0.39  48
PPM 150756     06:33:48.3 +02:09:05  9.4  0.06  48
05TV189        06:33:38.7 +02:11:33 15.0        48
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:24:13 UT

RECON