RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1200:08287970 with event index number of 2203595

Geocentric closest approach at 2024/11/02 05:21:31 UTC

J2000 position of star is 19:42:49.2 +31:37:42
Equinox of date position of star is 19:43:45.6 +31:41:13
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 86 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 15.5 AU from the Sun and 15.5 AU from the Earth.
Apparent velocity is 29.0 km/sec on the sky relative to the star, or, 9.3 arcsec/hr.
The 1-sigma error in the time of the event is 54 seconds.
The 1-sigma cross-track error in the shadow position is 708 km.
The sky-plane scale is 11276.7 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=82.8 km assuming a 5% albedo -- 2.7 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2024/11/02 05:24UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:46.8 +38:48:28  0.0 15.21  78
37Gam Cyg      20:23:07.2 +40:20:14  2.2 11.73  97
12Phi Cyg      19:40:21.5 +30:12:43  5.8  1.65  85
PPM 083388     19:43:06.6 +31:36:02  8.4  0.17  86
PPM 083398     19:43:26.7 +31:47:57  8.9  0.13  86
342842         19:43:47.2 +31:41:19 16.2        86
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 5.0 sigma about the mid-time.
The median site spacing is 17.5 km RECON observability=1.0 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)
George/Scottsdale 05:21:08 -58.9 Dark Down 28.5 290.8 Low 05:16:09 - 05:26:07 6035
CU-SBO 05:20:37 -58.9 Dark Down 25.9 290.7 Low 05:15:38 - 05:25:36 5999
Nikitin 05:20:37 -58.9 Dark Down 25.9 290.7 Low 05:15:38 - 05:25:36 5998
Dunrhomin 05:20:37 -58.8 Dark Down 25.9 290.6 Low 05:15:38 - 05:25:36 5990
Yuma 05:21:15 -57.3 Dark Down 30.3 290.3 Up 05:16:16 - 05:26:14 5957
Lake Havasu City 05:21:07 -56.7 Dark Down 30.7 289.4 Up 05:16:08 - 05:26:06 5914
Calipatria 05:21:13 -56.5 Dark Down 31.2 289.7 Up 05:16:14 - 05:26:12 5906
Patrick 05:21:04 -56.6 Dark Down 30.7 289.0 Up 05:16:05 - 05:26:03 5903
Laughlin/Bullhead City 05:21:05 -56.2 Dark Down 31.2 288.9 Up 05:16:06 - 05:26:04 5882
Idyllwild 05:21:13 -55.3 Dark Down 32.3 288.9 Up 05:16:14 - 05:26:12 5838
Wildwood 05:21:13 -53.7 Dark Down 33.9 287.9 Up 05:16:14 - 05:26:12 5742
Beatty 05:21:02 -53.8 Dark Down 33.4 286.9 Up 05:16:03 - 05:26:01 5733
Bishop 05:21:02 -52.4 Dark Down 34.8 285.9 Up 05:16:03 - 05:26:01 5646
Hawthorne 05:20:58 -51.7 Dark Down 35.3 284.9 Up 05:15:59 - 05:25:57 5594
Lee Vining 05:21:02 -51.6 Dark Down 35.5 285.1 Up 05:16:03 - 05:26:01 5594
Yerington 05:20:58 -51.1 Dark Down 35.8 284.4 Up 05:15:59 - 05:25:57 5554
Gardnerville 05:20:58 -50.7 Dark Down 36.2 284.1 Up 05:15:59 - 05:25:57 5530
Carson City 05:20:57 -50.6 Dark Down 36.3 283.9 Up 05:15:58 - 05:25:56 5519
Reno 05:20:56 -50.4 Dark Down 36.4 283.6 Up 05:15:57 - 05:25:55 5504
Portola 05:20:55 -49.8 Dark Down 37.0 283.1 Up 05:15:56 - 05:25:54 5465
Quincy 05:20:55 -49.5 Dark Down 37.4 282.8 Up 05:15:56 - 05:25:54 5438
Gimple 05:20:55 -49.4 Dark Down 37.3 282.7 Up 05:15:56 - 05:25:54 5435
Greenville 05:20:55 -49.4 Dark Down 37.4 282.6 Up 05:15:56 - 05:25:54 5431
Cedarville 05:20:49 -49.2 Dark Down 37.1 282.0 Up 05:15:50 - 05:25:48 5412
Fall River/Burney 05:20:52 -48.6 Dark Down 37.9 281.7 Up 05:15:53 - 05:25:51 5376
Sleaford 05:20:00 -49.0 Dark Down 30.1 284.0 Up 05:15:01 - 05:24:59 5320
Klamath Falls 05:20:48 -47.8 Dark Down 38.5 280.6 Up 05:15:49 - 05:25:47 5312
Chiloquin 05:20:47 -47.6 Dark Down 38.6 280.3 Up 05:15:48 - 05:25:46 5295
PNWRO 05:20:33 -47.5 Dark Down 37.1 279.4 Up 05:15:34 - 05:25:32 5268
Oregon Observatory 05:20:42 -47.2 Dark Down 38.5 279.5 Up 05:15:43 - 05:25:41 5258
Bend 05:20:41 -47.2 Dark Down 38.5 279.4 Up 05:15:42 - 05:25:40 5256
Sisters 05:20:41 -46.9 Dark Down 38.7 279.1 Up 05:15:42 - 05:25:40 5235
Maupin 05:20:37 -46.7 Dark Down 38.5 278.7 Up 05:15:38 - 05:25:36 5217
The Dalles 05:20:37 -46.4 Dark Down 38.6 278.3 Up 05:15:38 - 05:25:36 5193
Toppenish/White Swan 05:20:33 -46.4 Dark Down 38.2 278.1 Up 05:15:34 - 05:25:32 5190
Yakima 05:20:32 -46.2 Dark Down 38.3 277.9 Up 05:15:33 - 05:25:31 5173
Ellensburg 05:20:31 -46.0 Dark Down 38.4 277.5 Up 05:15:32 - 05:25:30 5155
Wenatchee 05:20:29 -45.9 Dark Down 38.3 277.4 Up 05:15:30 - 05:25:28 5144
Brewster 05:20:26 -45.8 Dark Down 38.0 277.2 Up 05:15:27 - 05:25:25 5131
Manson/Chelan 05:20:28 -45.7 Dark Down 38.3 277.1 Up 05:15:29 - 05:25:27 5127
Okanogan 05:20:25 -45.7 Dark Down 37.9 277.1 Up 05:15:26 - 05:25:24 5126
Anarchist Mountain Observatory 05:20:23 -45.4 Dark Down 37.9 276.8 Up 05:15:24 - 05:25:22 5102
Oliver 05:20:23 -45.2 Dark Down 38.0 276.5 Up 05:15:24 - 05:25:22 5085
Penticton 05:20:21 -45.0 Dark Down 38.1 276.2 Up 05:15:22 - 05:25:20 5067
Summerland 05:20:21 -44.9 Dark Down 38.1 276.1 Up 05:15:22 - 05:25:20 5059
Kelowna 05:20:21 -44.8 Dark Down 38.0 276.0 Up 05:15:22 - 05:25:20 5053
Peachland 05:20:20 -44.8 Dark Down 38.2 275.9 Up 05:15:21 - 05:25:19 5048
Kamloops 05:20:18 -43.9 Dark Down 38.7 274.7 Up 05:15:19 - 05:25:17 4977
Victoria 05:20:28 -43.5 Dark Down 40.5 274.3 Up 05:15:29 - 05:25:27 4963

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 342842, (2024/11/02 05:24UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 15.21  78
37Gam Cyg      20:22:13.7 +40:15:24  2.2 11.73  97
12Phi Cyg      19:39:22.6 +30:09:13  5.8  1.65  85
PPM 083388     19:42:08.6 +31:32:26  8.4  0.17  86
PPM 083398     19:42:28.8 +31:44:21  8.9  0.13  86
342842         19:42:49.2 +31:37:42 16.2        86
Positions are for J2000

Event circumstances last updated at 2024/03/02 06:03:08 UT

Marc W. Buie, Southwest Research Institute

RECON