RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1080:12601034 with event index number of 2206610

Geocentric closest approach at 2028/08/16 09:20:32 UTC

J2000 position of star is 19:44:53.4 +18:29:15
Equinox of date position of star is 19:45:52.6 +18:32:32
Stellar brightness G=10.9, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 129 degrees from the moon. Moon is 21% 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 31.5 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 47 seconds.
The 1-sigma cross-track error in the shadow position is 2187 km.
The sky-plane scale is 11447.0 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 2.6 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2028/08/16 09:21UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:54.4 +38:48:41  0.0 25.09 115
Tarazed        19:47:37.2 +10:41:06  2.7  7.88 135
7Del Sge       19:48:39.9 +18:36:24  3.8  0.59 128
PPM 136883     19:45:48.1 +18:39:34  8.5  0.13 129
342842         19:46:09.9 +18:33:30 10.9       128
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 30.1 km RECON observability=1.0 and success probability=16.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:17:45 -18.7 Dark Up 31.2 259.9 Up 09:13:23 - 09:22:08 -1953
Kamloops 09:18:04 -23.9 Dark Up 40.2 247.9 Up 09:13:41 - 09:22:26 -1982
Kelowna 09:18:02 -24.5 Dark Up 40.0 249.4 Up 09:13:40 - 09:22:25 -2081
Peachland 09:18:03 -24.6 Dark Up 40.2 249.2 Up 09:13:40 - 09:22:25 -2089
Summerland 09:18:03 -24.8 Dark Up 40.2 249.4 Up 09:13:40 - 09:22:25 -2106
Penticton 09:18:03 -24.8 Dark Up 40.2 249.5 Up 09:13:40 - 09:22:25 -2115
Oliver 09:18:03 -25.1 Dark Up 40.3 249.8 Up 09:13:40 - 09:22:25 -2153
Victoria 09:18:09 -26.5 Dark Up 42.9 246.6 Up 09:13:46 - 09:22:31 -2164
Anarchist Mountain Observatory 09:18:03 -25.2 Dark Up 40.2 250.1 Up 09:13:40 - 09:22:25 -2174
Tonasket 09:18:02 -25.5 Dark Up 40.4 250.3 Up 09:13:40 - 09:22:25 -2206
Okanogan 09:18:03 -25.9 Dark Up 40.6 250.4 Up 09:13:40 - 09:22:25 -2240
Brewster 09:18:03 -26.2 Dark Up 40.8 250.5 Up 09:13:41 - 09:22:26 -2266
Manson/Chelan 09:18:03 -26.5 Dark Up 41.1 250.3 Up 09:13:41 - 09:22:26 -2283
Wenatchee 09:18:04 -27.0 Dark Up 41.4 250.5 Up 09:13:41 - 09:22:26 -2332
Ellensburg 09:18:04 -27.4 Dark Up 41.6 250.7 Up 09:13:42 - 09:22:27 -2373
Yakima 09:18:05 -27.8 Dark Up 41.8 251.0 Up 09:13:42 - 09:22:27 -2416
Toppenish/White Swan 09:18:04 -27.9 Dark Up 41.7 251.3 Up 09:13:42 - 09:22:27 -2442
Goldendale 09:18:05 -28.6 Dark Up 42.2 251.4 Up 09:13:43 - 09:22:28 -2495
PNWRO 09:18:02 -27.9 Dark Up 40.9 253.0 Up 09:13:39 - 09:22:24 -2505
The Dalles 09:18:05 -28.9 Dark Up 42.5 251.3 Up 09:13:43 - 09:22:28 -2514
Maupin 09:18:05 -29.2 Dark Up 42.6 251.7 Up 09:13:43 - 09:22:28 -2561
Sisters 09:18:07 -30.2 Dark Up 43.2 252.1 Up 09:13:44 - 09:22:29 -2647
Bend 09:18:06 -30.3 Dark Up 43.1 252.5 Up 09:13:43 - 09:22:28 -2678
Oregon Observatory 09:18:06 -30.5 Dark Up 43.2 252.6 Up 09:13:44 - 09:22:29 -2694
North Lake 09:18:05 -31.0 Dark Up 43.0 253.6 Up 09:13:43 - 09:22:28 -2772
Chiloquin 09:18:07 -31.9 Dark Up 43.9 253.4 Up 09:13:45 - 09:22:30 -2829
Klamath Falls 09:18:08 -32.2 Dark Up 43.9 253.8 Up 09:13:45 - 09:22:30 -2868
Lakeview 09:18:05 -31.9 Dark Up 42.9 255.0 Up 09:13:43 - 09:22:28 -2896
Cedarville 09:18:05 -32.4 Dark Up 43.0 255.8 Up 09:13:43 - 09:22:28 -2971
Fall River/Burney 09:18:07 -33.2 Dark Up 44.0 255.2 Up 09:13:45 - 09:22:30 -3002
Susanville 09:18:06 -33.6 Dark Up 43.6 256.4 Up 09:13:43 - 09:22:28 -3084
Greenville 09:18:07 -33.9 Dark Up 43.9 256.4 Up 09:13:45 - 09:22:30 -3108
Gimple 09:18:07 -33.9 Dark Up 43.8 256.5 Up 09:13:45 - 09:22:30 -3110
Quincy 09:18:07 -34.1 Dark Up 43.9 256.6 Up 09:13:45 - 09:22:30 -3131
Portola 09:18:06 -34.1 Dark Up 43.6 257.1 Up 09:13:43 - 09:22:28 -3153
Reno 09:18:05 -34.2 Dark Up 43.1 257.9 Up 09:13:42 - 09:22:27 -3192
Carson City 09:18:05 -34.5 Dark Up 43.2 258.2 Up 09:13:43 - 09:22:28 -3232
Dunrhomin 09:17:41 -28.0 Dark Up 32.0 267.8 Up 09:13:19 - 09:22:04 -3259
Gardnerville 09:18:05 -34.7 Dark Up 43.2 258.5 Up 09:13:43 - 09:22:28 -3259
Yerington 09:18:04 -34.5 Dark Up 42.8 258.9 Up 09:13:41 - 09:22:26 -3264
CU-SBO 09:17:41 -28.3 Dark Up 32.1 267.9 Up 09:13:19 - 09:22:04 -3286
Hawthorne 09:18:04 -34.8 Dark Up 42.4 259.7 Up 09:13:41 - 09:22:26 -3323
Lee Vining 09:18:04 -35.4 Dark Up 42.9 259.8 Up 09:13:42 - 09:22:27 -3377
Tonopah 09:18:01 -34.7 Dark Up 41.4 261.1 Up 09:13:38 - 09:22:23 -3395
Bishop 09:18:04 -35.7 Dark Up 42.5 260.9 Up 09:13:41 - 09:22:26 -3454
Beatty 09:18:01 -35.6 Dark Up 41.2 262.5 Up 09:13:39 - 09:22:24 -3529
Indian Springs 09:17:59 -35.5 Dark Up 40.4 263.5 Up 09:13:37 - 09:22:22 -3580
Henderson 09:17:58 -35.7 Dark Up 39.9 264.4 Up 09:13:35 - 09:22:20 -3647
Patrick 09:17:56 -35.8 Dark Up 39.1 265.6 Up 09:13:33 - 09:22:18 -3730
Laughlin/Bullhead City 09:17:58 -36.3 Dark Up 39.7 265.4 Up 09:13:35 - 09:22:20 -3748
Kingman/Dolan Springs 09:17:56 -36.1 Dark Up 39.3 265.7 Up 09:13:34 - 09:22:19 -3752
Mohave Valley 09:17:57 -36.6 Dark Up 39.7 265.6 Up 09:13:35 - 09:22:20 -3778
Wildwood 09:18:06 -38.8 Dark Up 43.1 263.8 Up 09:13:43 - 09:22:28 -3807
Lake Havasu City 09:17:57 -36.8 Dark Up 39.5 266.1 Up 09:13:35 - 09:22:20 -3825
Parker 09:17:57 -37.1 Dark Up 39.5 266.4 Up 09:13:34 - 09:22:19 -3864
Idyllwild 09:18:02 -38.4 Dark Up 41.5 265.3 Up 09:13:40 - 09:22:25 -3876
George/Scottsdale 09:17:54 -36.4 Dark Up 37.5 268.2 Up 09:13:31 - 09:22:16 -3938
Calipatria 09:18:00 -38.5 Dark Up 40.6 266.5 Up 09:13:38 - 09:22:23 -3959
Yuma 09:17:59 -38.5 Dark Up 39.9 267.4 Up 09:13:36 - 09:22:21 -4018

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, (2028/08/16 09:21UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 25.09 115
Tarazed        19:46:15.6 +10:36:48  2.7  7.88 135
7Del Sge       19:47:23.3 +18:32:04  3.8  0.59 128
PPM 136883     19:44:31.6 +18:35:20  8.5  0.13 129
342842         19:44:53.4 +18:29:15 10.9       129
Positions are for J2000

Event circumstances last updated at 2022/02/16 01:12:11 UT

Marc W. Buie, Southwest Research Institute

RECON