RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1200:08304062 with event index number of 2203601

Geocentric closest approach at 2024/11/03 06:52:41 UTC

J2000 position of star is 19:42:54.7 +31:33:56
Equinox of date position of star is 19:43:51.1 +31:37:28
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 79 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 15.5 AU from the Sun and 15.6 AU from the Earth.
Apparent velocity is 29.0 km/sec on the sky relative to the star, or, 9.2 arcsec/hr.
The 1-sigma error in the time of the event is 53 seconds.
The 1-sigma cross-track error in the shadow position is 790 km.
The sky-plane scale is 11285.8 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, (2024/11/03 06:53UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:46.8 +38:48:28  0.0 15.26  74
37Gam Cyg      20:23:07.2 +40:20:14  2.2 11.77  90
12Phi Cyg      19:40:21.5 +30:12:43  5.8  1.60  77
PPM 083388     19:43:06.6 +31:36:02  8.4  0.17  79
342842         19:43:52.7 +31:37:33 16.0        79
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 14.4 km RECON observability=0.6 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Yuma 06:51:53 -71.2 Dark Down 12.3 299.8 Really Low 06:47:00 - 06:56:46 2981
Calipatria 06:51:52 -70.5 Dark Down 13.1 299.3 Really Low 06:46:59 - 06:56:45 2960
George/Scottsdale 06:51:45 -71.0 Dark Down 10.8 300.9 Really Low 06:46:52 - 06:56:38 2959
Idyllwild 06:51:52 -69.6 Dark Down 14.3 298.7 Really Low 06:46:59 - 06:56:45 2930
Lake Havasu City 06:51:47 -69.7 Dark Down 12.9 299.6 Really Low 06:46:54 - 06:56:40 2920
Wildwood 06:51:55 -68.5 Dark Down 15.8 297.7 Really Low 06:47:02 - 06:56:48 2895
Laughlin/Bullhead City 06:51:44 -69.0 Dark Down 13.5 299.3 Really Low 06:46:51 - 06:56:37 2893
Patrick 06:51:43 -68.9 Dark Down 13.1 299.6 Really Low 06:46:50 - 06:56:36 2889
Beatty 06:51:43 -66.7 Dark Down 15.8 297.9 Really Low 06:46:50 - 06:56:36 2808
Bishop 06:51:44 -65.7 Dark Down 17.2 296.9 Really Low 06:46:51 - 06:56:37 2772
Lee Vining 06:51:43 -64.9 Dark Down 18.0 296.4 Really Low 06:46:50 - 06:56:36 2739
Hawthorne 06:51:41 -64.6 Dark Down 17.9 296.5 Really Low 06:46:48 - 06:56:34 2720
Yerington 06:51:40 -64.0 Dark Down 18.5 296.1 Really Low 06:46:47 - 06:56:33 2693
Gardnerville 06:51:41 -63.8 Dark Down 18.9 295.8 Really Low 06:46:48 - 06:56:34 2687
CU-SBO 06:51:16 -65.2 Dark Down 9.7 303.3 Really Low 06:46:23 - 06:56:09 2685
Nikitin 06:51:15 -65.1 Dark Down 9.7 303.4 Really Low 06:46:22 - 06:56:08 2681
Carson City 06:51:40 -63.6 Dark Down 19.0 295.7 Really Low 06:46:47 - 06:56:33 2676
Dunrhomin 06:51:15 -64.9 Dark Down 9.8 303.3 Really Low 06:46:22 - 06:56:08 2673
Reno 06:51:39 -63.2 Dark Down 19.2 295.6 Really Low 06:46:46 - 06:56:32 2660
Portola 06:51:39 -62.8 Dark Down 19.8 295.1 Really Low 06:46:46 - 06:56:32 2639
Quincy 06:51:40 -62.5 Dark Down 20.1 294.8 Low 06:46:47 - 06:56:33 2625
Gimple 06:51:39 -62.3 Dark Down 20.2 294.8 Low 06:46:46 - 06:56:32 2617
Greenville 06:51:39 -62.3 Dark Down 20.2 294.8 Low 06:46:46 - 06:56:32 2616
Fall River/Burney 06:51:37 -61.3 Dark Down 20.9 294.2 Low 06:46:44 - 06:56:30 2567
Cedarville 06:51:34 -61.3 Dark Down 20.3 294.7 Low 06:46:41 - 06:56:27 2562
Klamath Falls 06:51:34 -60.2 Dark Down 21.7 293.6 Low 06:46:41 - 06:56:27 2504
Chiloquin 06:51:33 -59.8 Dark Down 21.9 293.4 Low 06:46:40 - 06:56:26 2486
Oregon Observatory 06:51:28 -58.8 Dark Down 22.1 293.1 Low 06:46:35 - 06:56:21 2425
Bend 06:51:28 -58.7 Dark Down 22.1 293.2 Low 06:46:35 - 06:56:21 2418
Sisters 06:51:28 -58.4 Dark Down 22.4 292.9 Low 06:46:35 - 06:56:21 2401
Maupin 06:51:24 -57.8 Dark Down 22.4 292.9 Low 06:46:31 - 06:56:17 2361
PNWRO 06:51:19 -57.6 Dark Down 21.3 293.9 Low 06:46:26 - 06:56:12 2343
The Dalles 06:51:23 -57.4 Dark Down 22.6 292.6 Low 06:46:30 - 06:56:16 2336
Toppenish/White Swan 06:51:20 -56.9 Dark Down 22.4 292.8 Low 06:46:27 - 06:56:13 2303
Yakima 06:51:19 -56.6 Dark Down 22.6 292.6 Low 06:46:26 - 06:56:12 2289
Ellensburg 06:51:18 -56.3 Dark Down 22.8 292.5 Low 06:46:25 - 06:56:11 2266
Wenatchee 06:51:17 -56.0 Dark Down 22.8 292.4 Low 06:46:24 - 06:56:10 2245
Manson/Chelan 06:51:14 -55.6 Dark Down 22.9 292.4 Low 06:46:21 - 06:56:07 2219
Brewster 06:51:13 -55.5 Dark Down 22.7 292.5 Low 06:46:20 - 06:56:06 2211
Okanogan 06:51:12 -55.3 Dark Down 22.7 292.5 Low 06:46:19 - 06:56:05 2197
Anarchist Mountain Observatory 06:51:10 -54.7 Dark Down 22.8 292.4 Low 06:46:17 - 06:56:03 2161
Oliver 06:51:10 -54.5 Dark Down 23.0 292.2 Low 06:46:17 - 06:56:03 2148
Victoria 06:51:17 -54.1 Dark Down 25.1 290.0 Low 06:46:24 - 06:56:10 2135
Penticton 06:51:09 -54.2 Dark Down 23.1 292.1 Low 06:46:16 - 06:56:02 2126
Summerland 06:51:09 -54.1 Dark Down 23.2 292.0 Low 06:46:16 - 06:56:02 2121
Peachland 06:51:08 -53.9 Dark Down 23.4 291.9 Low 06:46:15 - 06:56:01 2111
Kelowna 06:51:08 -53.9 Dark Down 23.2 292.0 Low 06:46:15 - 06:56:01 2107
Kamloops 06:51:07 -52.9 Dark Down 24.1 291.1 Low 06:46:14 - 06:56:00 2046
Sleaford 06:50:45 -53.1 Dark Down 16.6 300.4 Really Low 06:45:52 - 06:55:38 2004

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, (2024/11/03 06:53UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 15.26  74
37Gam Cyg      20:22:13.7 +40:15:24  2.2 11.77  90
12Phi Cyg      19:39:22.6 +30:09:13  5.8  1.60  77
PPM 083388     19:42:08.6 +31:32:26  8.4  0.17  79
342842         19:42:54.7 +31:33:56 16.0        79
Positions are for J2000

Event circumstances last updated at 2024/03/02 06:03:17 UT

Marc W. Buie, Southwest Research Institute

RECON