RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1260:08278233 with event index number of 2203108

Geocentric closest approach at 2024/07/12 08:11:03 UTC

J2000 position of star is 20:02:39.6 +37:22:16
Equinox of date position of star is 20:03:27.7 +37:26:00
Stellar brightness G=13.5, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 112 degrees from the moon. Moon is 35% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 15.4 AU from the Sun and 14.9 AU from the Earth.
The TNO is moving 29.6 km/sec on the sky relative to the star, or, 9.9 arcsec/hr.
The 1-sigma error in the time of the event is 22 seconds.
The 1-sigma cross-track error in the shadow position is 1414 km.
The sky-plane scale is 10798.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.8 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2024/07/12 08:12UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:16.1 +45:22:08  1.3 10.73 116
37Gam Cyg      20:23:06.6 +40:20:11  2.2  4.78 115
25 Cyg         20:00:49.1 +37:06:40  5.0  0.64 112
PPM 084125     20:05:00.7 +37:15:09  8.1  0.34 112
PPM 084123     20:05:00.3 +37:32:13  9.1  0.30 112
342842         20:03:33.5 +37:26:28 13.5       112
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 27.6 km RECON observability=1.0 and success probability=12.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:11:12 -17.4 AT Down 75.7 155.2 Up 08:08:53 - 08:13:30 4151
Sleaford 08:10:38 -14.8 AT Down 74.5 200.6 Up 08:08:20 - 08:12:57 4107
Kelowna 08:11:11 -18.2 Dark Down 76.6 156.7 Up 08:08:52 - 08:13:29 4050
Peachland 08:11:11 -18.4 Dark Down 76.7 155.5 Up 08:08:53 - 08:13:30 4044
Summerland 08:11:12 -18.5 Dark Down 76.8 155.6 Up 08:08:53 - 08:13:30 4027
Penticton 08:11:11 -18.6 Dark Down 76.9 155.8 Up 08:08:53 - 08:13:30 4018
Victoria 08:11:22 -19.6 Dark Down 76.5 141.6 Up 08:09:03 - 08:13:40 3990
Oliver 08:11:12 -18.9 Dark Down 77.2 155.2 Up 08:08:53 - 08:13:30 3981
Anarchist Mountain Observatory 08:11:11 -19.1 Dark Down 77.4 155.5 Up 08:08:53 - 08:13:30 3959
Tonasket 08:11:12 -19.4 Dark Down 77.7 154.7 Up 08:08:53 - 08:13:30 3928
Okanogan 08:11:13 -19.7 Dark Down 78.0 153.5 Up 08:08:54 - 08:13:31 3896
Brewster 08:11:13 -20.0 Dark Down 78.1 152.2 Up 08:08:55 - 08:13:32 3871
Manson/Chelan 08:11:14 -20.2 Dark Down 78.2 150.4 Up 08:08:56 - 08:13:33 3856
Wenatchee 08:11:15 -20.7 Dark Down 78.6 148.7 Up 08:08:57 - 08:13:34 3810
Ellensburg 08:11:16 -21.1 Dark Down 78.8 146.8 Up 08:08:58 - 08:13:35 3771
Yakima 08:11:17 -21.5 Dark Down 79.2 145.5 Up 08:08:58 - 08:13:35 3728
Toppenish/White Swan 08:11:17 -21.7 Dark Down 79.4 145.5 Up 08:08:58 - 08:13:35 3702
Pasco 08:11:14 -21.8 Dark Down 80.0 150.1 Up 08:08:55 - 08:13:32 3664
Goldendale 08:11:18 -22.3 Dark Down 79.7 142.2 Up 08:09:00 - 08:13:37 3652
The Dalles 08:11:20 -22.5 Dark Down 79.7 140.1 Up 08:09:01 - 08:13:38 3636
PNWRO 08:11:13 -22.1 Dark Down 80.3 150.4 Up 08:08:55 - 08:13:32 3633
Maupin 08:11:20 -22.9 Dark Down 80.1 138.9 Up 08:09:01 - 08:13:38 3590
Sisters 08:11:22 -23.8 Dark Down 80.5 133.6 Up 08:09:03 - 08:13:40 3508
Redmond 08:11:21 -23.8 Dark Down 80.7 135.0 Up 08:09:02 - 08:13:39 3497
Bend 08:11:22 -24.1 Dark Down 80.8 133.5 Up 08:09:03 - 08:13:40 3477
Oregon Observatory 08:11:22 -24.2 Dark Down 80.8 132.2 Up 08:09:03 - 08:13:40 3461
La Pine/Gilchrist 08:11:22 -24.4 Dark Down 80.9 131.1 Up 08:09:04 - 08:13:41 3441
North Lake 08:11:21 -24.9 Dark Down 81.5 131.2 Up 08:09:03 - 08:13:40 3382
Chiloquin 08:11:24 -25.6 Dark Down 81.4 124.2 Up 08:09:06 - 08:13:43 3331
Paisley 08:11:21 -25.4 Dark Down 82.1 129.7 Up 08:09:02 - 08:13:39 3315
Klamath Falls 08:11:25 -25.9 Dark Down 81.6 122.5 Up 08:09:06 - 08:13:43 3293
Lakeview 08:11:21 -25.9 Dark Down 82.5 127.6 Up 08:09:02 - 08:13:39 3257
Cedarville 08:11:21 -26.6 Dark Down 83.0 124.1 Up 08:09:02 - 08:13:39 3183
Fall River/Burney 08:11:25 -27.1 Dark Down 82.5 116.4 Up 08:09:06 - 08:13:43 3159
Susanville 08:11:23 -27.7 Dark Down 83.2 114.3 Up 08:09:05 - 08:13:42 3075
Greenville 08:11:25 -28.0 Dark Down 83.1 111.3 Up 08:09:06 - 08:13:43 3052
Gimple 08:11:24 -28.0 Dark Down 83.2 111.5 Up 08:09:06 - 08:13:43 3050
Quincy 08:11:25 -28.2 Dark Down 83.2 109.7 Up 08:09:06 - 08:13:43 3031
Portola 08:11:24 -28.3 Dark Down 83.6 110.0 Up 08:09:05 - 08:13:42 3006
Reno 08:11:22 -28.6 Dark Down 84.2 109.7 Up 08:09:04 - 08:13:41 2963
Carson City 08:11:22 -28.9 Dark Down 84.3 106.4 Up 08:09:04 - 08:13:41 2924
Gardnerville 08:11:23 -29.2 Dark Down 84.4 104.1 Up 08:09:04 - 08:13:41 2897
Yerington 08:11:20 -29.1 Dark Down 84.8 106.2 Up 08:09:02 - 08:13:39 2889
Hawthorne 08:11:20 -29.5 Dark Down 85.3 102.5 Up 08:09:01 - 08:13:38 2828
Dunrhomin 08:10:40 -26.1 Dark Down 83.4 246.3 Up 08:08:22 - 08:12:59 2808
Lee Vining 08:11:22 -30.1 Dark Down 85.0 94.9 Up 08:09:03 - 08:13:40 2778
Tonopah 08:11:16 -29.9 Dark Down 86.5 100.0 Up 08:08:58 - 08:13:35 2748
Bishop 08:11:20 -30.7 Dark Down 85.6 88.2 Up 08:09:02 - 08:13:39 2698
Beatty 08:11:16 -31.1 Dark Down 86.9 80.2 Up 08:08:57 - 08:13:34 2613
Indian Springs 08:11:13 -31.3 Dark Down 87.6 69.7 Up 08:08:54 - 08:13:31 2557
CPSLO 08:11:29 -32.8 Dark Down 83.4 69.4 Up 08:09:10 - 08:13:47 2529
Henderson 08:11:11 -31.8 Dark Down 87.8 51.4 Up 08:08:53 - 08:13:30 2485
Patrick 08:11:09 -32.3 Dark Down 87.9 22.5 Up 08:08:50 - 08:13:27 2396
Laughlin/Bullhead City 08:11:11 -32.6 Dark Down 87.4 31.8 Up 08:08:52 - 08:13:29 2383
Kingman/Dolan Springs 08:11:09 -32.5 Dark Down 87.6 23.7 Up 08:08:51 - 08:13:28 2376
Mohave Valley 08:11:11 -32.9 Dark Down 87.2 28.8 Up 08:08:52 - 08:13:29 2353
Wildwood 08:11:24 -34.0 Dark Down 84.3 53.0 Up 08:09:05 - 08:13:42 2351
Lake Havasu City 08:11:11 -33.2 Dark Down 86.9 22.1 Up 08:08:52 - 08:13:29 2305
Idyllwild 08:11:18 -34.2 Dark Down 85.2 39.5 Up 08:09:00 - 08:13:37 2270
Parker 08:11:11 -33.6 Dark Down 86.6 19.5 Up 08:08:52 - 08:13:29 2266
Blythe 08:11:12 -34.1 Dark Down 86.0 20.1 Up 08:08:54 - 08:13:31 2215
Calipatria 08:11:15 -34.7 Dark Down 85.2 26.3 Up 08:08:57 - 08:13:34 2180
George/Scottsdale 08:11:04 -33.7 Dark Down 86.3 348.1 Up 08:08:45 - 08:13:22 2177
Yuma 08:11:13 -35.0 Dark Down 85.1 16.7 Up 08:08:54 - 08:13:31 2116

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, (2024/07/12 08:12UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 10.73 116
37Gam Cyg      20:22:13.7 +40:15:24  2.2  4.78 115
25 Cyg         19:59:55.1 +37:02:34  5.0  0.64 112
PPM 084125     20:04:06.6 +37:10:55  8.1  0.34 112
PPM 084123     20:04:06.3 +37:27:59  9.1  0.30 112
342842         20:02:39.6 +37:22:16 13.5       112
Positions are for J2000

Event circumstances last updated at 2021/11/16 00:51:52 UT

Marc W. Buie, Southwest Research Institute

RECON