RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1080:12441308 with event index number of 2206632

Geocentric closest approach at 2028/08/20 06:22:15 UTC

J2000 position of star is 19:44:01.9 +18:20:06
Equinox of date position of star is 19:45:01.1 +18:23:21
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 138 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 16.5 AU from the Sun and 15.8 AU from the Earth.
The TNO is moving 31.2 km/sec on the sky relative to the star, or, 9.8 arcsec/hr.
The 1-sigma error in the time of the event is 56 seconds.
The 1-sigma cross-track error in the shadow position is 1990 km.
The sky-plane scale is 11462.8 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
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, (2028/08/20 06:24UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:54.4 +38:48:41  0.0 25.11 114
Tarazed        19:47:37.2 +10:41:06  2.7  7.74 143
7Del Sge       19:48:39.9 +18:36:24  3.8  0.82 139
PPM 136874     19:45:23.5 +18:38:07  8.4  0.23 138
PPM 136862     19:44:47.6 +18:20:40  9.5  0.14 138
342842         19:45:18.6 +18:24:19 15.5       138
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 27.2 km RECON observability=1.0 and success probability=11.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:20:55 -23.1 Dark Down 57.0 194.0 Up 06:15:47 - 06:26:03 4713
Victoria 06:21:04 -24.0 Dark Down 59.5 189.3 Up 06:15:56 - 06:26:12 4669
Peachland 06:20:55 -24.1 Dark Down 57.8 195.4 Up 06:15:47 - 06:26:03 4613
Kelowna 06:20:54 -24.1 Dark Down 57.7 195.9 Up 06:15:46 - 06:26:02 4610
Summerland 06:20:55 -24.3 Dark Down 58.0 195.6 Up 06:15:47 - 06:26:03 4597
Penticton 06:20:55 -24.4 Dark Down 58.0 195.9 Up 06:15:47 - 06:26:03 4587
Oliver 06:20:55 -24.7 Dark Down 58.4 196.0 Up 06:15:47 - 06:26:03 4558
Anarchist Mountain Observatory 06:20:55 -24.9 Dark Down 58.5 196.5 Up 06:15:47 - 06:26:03 4536
Tonasket 06:20:57 -25.2 Dark Down 58.8 196.5 Up 06:15:49 - 06:26:05 4513
Okanogan 06:20:57 -25.4 Dark Down 59.1 196.4 Up 06:15:49 - 06:26:05 4491
Brewster 06:20:58 -25.6 Dark Down 59.4 196.1 Up 06:15:50 - 06:26:06 4477
Manson/Chelan 06:20:59 -25.7 Dark Down 59.7 195.6 Up 06:15:51 - 06:26:07 4476
Wenatchee 06:21:00 -26.0 Dark Down 60.2 195.5 Up 06:15:52 - 06:26:08 4444
Ellensburg 06:21:01 -26.3 Dark Down 60.6 195.3 Up 06:15:53 - 06:26:09 4419
Yakima 06:21:02 -26.7 Dark Down 61.0 195.4 Up 06:15:54 - 06:26:10 4386
Toppenish/White Swan 06:21:02 -26.9 Dark Down 61.2 195.9 Up 06:15:54 - 06:26:10 4360
Goldendale 06:21:04 -27.3 Dark Down 61.8 195.3 Up 06:15:56 - 06:26:12 4333
The Dalles 06:21:05 -27.3 Dark Down 62.1 194.7 Up 06:15:57 - 06:26:13 4331
Sleaford 06:20:27 -24.9 Dark Down 52.0 215.8 Up 06:15:19 - 06:25:35 4301
Maupin 06:21:05 -27.7 Dark Down 62.5 195.1 Up 06:15:57 - 06:26:13 4291
PNWRO 06:21:00 -27.7 Dark Down 61.2 198.9 Up 06:15:52 - 06:26:08 4263
Sisters 06:21:07 -28.3 Dark Down 63.4 194.6 Up 06:15:59 - 06:26:15 4240
Bend 06:21:08 -28.6 Dark Down 63.6 195.2 Up 06:16:00 - 06:26:16 4208
Oregon Observatory 06:21:08 -28.7 Dark Down 63.8 195.1 Up 06:16:00 - 06:26:16 4199
North Lake 06:21:08 -29.5 Dark Down 64.3 196.6 Up 06:16:00 - 06:26:16 4119
Chiloquin 06:21:12 -29.7 Dark Down 65.1 194.9 Up 06:16:04 - 06:26:20 4107
Klamath Falls 06:21:12 -30.0 Dark Down 65.5 195.3 Up 06:16:04 - 06:26:20 4074
Lakeview 06:21:09 -30.6 Dark Down 65.2 198.5 Up 06:16:01 - 06:26:17 4002
Fall River/Burney 06:21:13 -31.2 Dark Down 66.5 196.9 Up 06:16:05 - 06:26:21 3955
Cedarville 06:21:09 -31.2 Dark Down 65.8 199.3 Up 06:16:01 - 06:26:17 3937
Susanville 06:21:13 -32.0 Dark Down 66.9 199.1 Up 06:16:05 - 06:26:21 3864
Greenville 06:21:13 -32.1 Dark Down 67.3 198.6 Up 06:16:05 - 06:26:21 3855
Gimple 06:21:14 -32.2 Dark Down 67.2 198.8 Up 06:16:06 - 06:26:22 3850
Quincy 06:21:14 -32.3 Dark Down 67.5 198.8 Up 06:16:06 - 06:26:22 3837
Portola 06:21:13 -32.6 Dark Down 67.5 200.0 Up 06:16:05 - 06:26:21 3802
Reno 06:21:12 -33.1 Dark Down 67.5 201.8 Up 06:16:04 - 06:26:20 3747
Carson City 06:21:13 -33.4 Dark Down 67.9 202.2 Up 06:16:05 - 06:26:21 3714
Gardnerville 06:21:13 -33.6 Dark Down 68.1 202.5 Up 06:16:05 - 06:26:21 3691
Yerington 06:21:12 -33.8 Dark Down 67.8 203.8 Up 06:16:04 - 06:26:20 3666
Hawthorne 06:21:11 -34.4 Dark Down 68.1 205.6 Up 06:16:03 - 06:26:19 3598
Lee Vining 06:21:14 -34.7 Dark Down 68.8 205.0 Up 06:16:06 - 06:26:22 3573
Tonopah 06:21:09 -35.4 Dark Down 68.0 209.4 Up 06:16:01 - 06:26:17 3487
Bishop 06:21:13 -35.5 Dark Down 69.0 207.5 Up 06:16:05 - 06:26:21 3483
Beatty 06:21:10 -36.6 Dark Down 68.8 212.0 Up 06:16:02 - 06:26:18 3360
Indian Springs 06:21:08 -37.2 Dark Down 68.6 214.9 Up 06:16:00 - 06:26:16 3277
Wildwood 06:21:19 -38.3 Dark Down 72.0 211.6 Up 06:16:11 - 06:26:27 3199
Henderson 06:21:08 -38.0 Dark Down 68.7 217.3 Up 06:16:00 - 06:26:16 3194
Dunrhomin 06:20:39 -36.5 Dark Down 60.4 229.0 Up 06:15:31 - 06:25:47 3154
CU-SBO 06:20:40 -36.8 Dark Down 60.6 229.2 Up 06:15:32 - 06:25:48 3134
Laughlin/Bullhead City 06:21:08 -38.9 Dark Down 69.2 219.6 Up 06:16:00 - 06:26:16 3093
Patrick 06:21:05 -38.9 Dark Down 68.6 220.8 Up 06:15:57 - 06:26:13 3081
Kingman/Dolan Springs 06:21:06 -39.1 Dark Down 68.9 220.7 Up 06:15:58 - 06:26:14 3070
Idyllwild 06:21:16 -39.4 Dark Down 71.4 217.1 Up 06:16:08 - 06:26:24 3069
Mohave Valley 06:21:09 -39.1 Dark Down 69.4 220.1 Up 06:16:01 - 06:26:17 3068
Lake Havasu City 06:21:09 -39.6 Dark Down 69.6 221.4 Up 06:16:01 - 06:26:17 3018
Parker 06:21:09 -39.9 Dark Down 69.8 222.1 Up 06:16:01 - 06:26:17 2984
Calipatria 06:21:14 -40.4 Dark Down 71.2 221.2 Up 06:16:06 - 06:26:22 2952
Yuma 06:21:13 -41.1 Dark Down 71.0 224.1 Up 06:16:05 - 06:26:21 2866
George/Scottsdale 06:21:04 -41.1 Dark Down 68.7 228.0 Up 06:15:56 - 06:26:12 2825

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, (2028/08/20 06:24UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 25.11 114
Tarazed        19:46:15.6 +10:36:48  2.7  7.74 143
7Del Sge       19:47:23.3 +18:32:04  3.8  0.82 139
PPM 136874     19:44:07.0 +18:33:54  8.4  0.23 138
PPM 136862     19:43:30.9 +18:16:28  9.5  0.14 138
342842         19:44:01.9 +18:20:06 15.5       138
Positions are for J2000

Event circumstances last updated at 2022/02/16 01:16:46 UT

Marc W. Buie, Southwest Research Institute

RECON