RECON: TNO occultation with 13TT187

Event between 13TT187 and star GA0900:00221846 with event index number of 2676352

Geocentric closest approach at 2024/02/10 02:37:02 UTC

J2000 position of star is 02:39:55.6 +00:14:22
Equinox of date position of star is 02:41:06.4 +00:20:14
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 74 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=23.4

[RECON map]
Object is 40.3 AU from the Sun and 40.5 AU from the Earth.
Apparent velocity is 12.9 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 188 seconds.
The 1-sigma cross-track error in the shadow position is 2599 km.
The sky-plane scale is 29377.1 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=221.8 km assuming a 5% albedo -- 17.2 sec chord
Diameter=90.6 km assuming a 30% albedo -- 7.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 13TT187, (2024/02/10 02:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.4 +16:33:21  0.8 32.89 106
68Omi Cet      02:20:34.0 -02:52:10  2.0  6.07  68
82Del Cet      02:40:43.3 +00:25:53  4.1  0.14  74
PPM 145792     02:41:06.1 +00:14:52  8.3  0.10  74
13TT187        02:41:09.9 +00:20:31 16.0        75
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 4.8 sigma about the mid-time.
The median site spacing is 24.7 km RECON observability=0.6 and success probability=18.1%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Victoria	02:42:41	-13.3	AT	Down	39.5	202.2	Up	02:27:41 - 02:57:41	2173
Kamloops	02:42:58	-15.5	AT	Down	36.8	205.4	Up	02:27:58 - 02:57:58	2162
Peachland	02:42:57	-15.8	AT	Down	37.4	206.4	Up	02:27:57 - 02:57:57	2068
Kelowna	02:42:59	-16.0	AT	Down	37.2	206.7	Up	02:27:59 - 02:57:59	2061
Summerland	02:42:57	-15.9	AT	Down	37.5	206.6	Up	02:27:57 - 02:57:57	2053
Penticton	02:42:57	-15.9	AT	Down	37.6	206.7	Up	02:27:57 - 02:57:57	2042
Oliver	02:42:56	-15.9	AT	Down	37.9	206.8	Up	02:27:56 - 02:57:56	2018
Anarchist Mountain Observatory	02:42:57	-16.0	AT	Down	38.0	207.1	Up	02:27:57 - 02:57:57	1996
Okanogan	02:42:54	-15.8	AT	Down	38.6	207.1	Up	02:27:54 - 02:57:54	1961
Manson/Chelan	02:42:51	-15.4	AT	Down	39.2	206.6	Up	02:27:51 - 02:57:51	1957
Brewster	02:42:52	-15.7	AT	Down	38.9	206.9	Up	02:27:52 - 02:57:52	1953
Wenatchee	02:42:48	-15.2	AT	Down	39.7	206.5	Up	02:27:48 - 02:57:48	1933
Ellensburg	02:42:46	-15.0	AT	Down	40.1	206.4	Up	02:27:46 - 02:57:46	1915
Yakima	02:42:46	-15.0	AT	Down	40.5	206.5	Up	02:27:46 - 02:57:46	1887
Toppenish/White Swan	02:42:46	-15.1	AT	Down	40.6	206.8	Up	02:27:46 - 02:57:46	1863
The Dalles	02:42:40	-14.4	AT	Down	41.6	206.1	Up	02:27:40 - 02:57:40	1851
Maupin	02:42:39	-14.5	AT	Down	41.9	206.4	Up	02:27:39 - 02:57:39	1815
Sisters	02:42:34	-14.0	AT	Down	42.9	206.1	Up	02:27:34 - 02:57:34	1781
PNWRO	02:42:50	-16.1	AT	Down	40.5	208.8	Up	02:27:50 - 02:57:50	1755
Bend	02:42:34	-14.2	AT	Down	43.0	206.5	Up	02:27:34 - 02:57:34	1749
Oregon Observatory	02:42:33	-14.1	AT	Down	43.2	206.4	Up	02:27:33 - 02:57:33	1744
Chiloquin	02:42:27	-13.6	AT	Down	44.5	206.4	Up	02:27:27 - 02:57:27	1674
Klamath Falls	02:42:26	-13.6	AT	Down	44.8	206.6	Up	02:27:26 - 02:57:26	1644
Sleaford	02:43:47	-24.6	Dark	Down	30.6	221.4	Up	02:28:47 - 02:58:47	1601
Fall River/Burney	02:42:22	-13.7	AT	Down	45.7	207.7	Up	02:27:22 - 02:57:22	1536
Cedarville	02:42:30	-14.7	AT	Down	44.9	209.1	Up	02:27:30 - 02:57:30	1499
Greenville	02:42:21	-13.9	AT	Down	46.4	208.7	Up	02:27:21 - 02:57:21	1443
Gimple	02:42:22	-14.0	AT	Down	46.4	208.8	Up	02:27:22 - 02:57:22	1438
Quincy	02:42:20	-13.9	AT	Down	46.6	208.8	Up	02:27:20 - 02:57:20	1428
Portola	02:42:22	-14.2	AT	Down	46.5	209.5	Up	02:27:22 - 02:57:22	1389
Reno	02:42:23	-14.7	AT	Down	46.5	210.5	Up	02:27:23 - 02:57:23	1330
Carson City	02:42:23	-14.7	AT	Down	46.8	210.8	Up	02:27:23 - 02:57:23	1302
Gardnerville	02:42:22	-14.7	AT	Down	47.0	211.0	Up	02:27:22 - 02:57:22	1281
Yerington	02:42:25	-15.2	AT	Down	46.7	211.7	Up	02:27:25 - 02:57:25	1248
Hawthorne	02:42:25	-15.5	AT	Down	46.9	212.7	Up	02:27:25 - 02:57:25	1181
Lee Vining	02:42:21	-15.1	AT	Down	47.5	212.3	Up	02:27:21 - 02:57:21	1168
Bishop	02:42:21	-15.6	AT	Down	47.7	213.7	Up	02:27:21 - 02:57:21	1077
Beatty	02:42:26	-16.8	AT	Down	47.4	216.2	Up	02:27:26 - 02:57:26	940
Wildwood	02:42:07	-14.9	AT	Down	50.5	215.5	Up	02:27:07 - 02:57:07	837
Idyllwild	02:42:14	-16.5	AT	Down	49.9	218.3	Up	02:27:14 - 02:57:14	688
Laughlin/Bullhead City	02:42:29	-18.4	Dark	Down	47.6	220.1	Up	02:27:29 - 02:57:29	667
Patrick	02:42:33	-19.0	Dark	Down	47.0	220.9	Up	02:27:33 - 02:57:33	643
Lake Havasu City	02:42:27	-18.6	Dark	Down	48.0	220.9	Up	02:27:27 - 02:57:27	597
Calipatria	02:42:16	-17.4	AT	Down	49.7	220.4	Up	02:27:16 - 02:57:16	563
Dunrhomin	02:43:24	-26.2	Dark	Down	38.7	227.9	Up	02:28:24 - 02:58:24	556
Nikitin	02:43:23	-26.1	Dark	Down	38.8	228.0	Up	02:28:23 - 02:58:23	541
CU-SBO	02:43:22	-26.1	Dark	Down	38.9	227.9	Up	02:28:22 - 02:58:22	540
Yuma	02:42:18	-18.1	Dark	Down	49.5	221.9	Up	02:27:18 - 02:57:18	471
George/Scottsdale	02:42:35	-20.6	Dark	Down	47.2	224.6	Up	02:27:35 - 02:57:35	381

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 13TT187, (2024/02/10 02:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 32.89 106
68Omi Cet      02:19:20.8 -02:58:45  2.0  6.07  68
82Del Cet      02:39:29.0 +00:19:42  4.1  0.14  74
PPM 145792     02:39:51.9 +00:08:43  8.3  0.10  74
13TT187        02:39:55.6 +00:14:22 16.0        74
Positions are for J2000

Event circumstances last updated at 2022/12/24 04:01:46 UT

RECON