RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1080:14866231 with event index number of 2206381

Geocentric closest approach at 2028/06/22 08:11:22 UTC

J2000 position of star is 19:58:41.0 +19:38:44
Equinox of date position of star is 19:59:39.8 +19:42:24
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=21.7

[RECON map]
TNO is 16.5 AU from the Sun and 15.9 AU from the Earth.
The TNO is moving 26.3 km/sec on the sky relative to the star, or, 8.2 arcsec/hr.
The 1-sigma error in the time of the event is 24 seconds.
The 1-sigma cross-track error in the shadow position is 2475 km.
The sky-plane scale is 11499.5 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 3.2 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2028/06/22 08:11UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:54.1 +38:48:40  0.0 26.04 114
Tarazed        19:47:36.8 +10:41:04  2.7  9.52 133
12Gam Sge      20:00:01.4 +19:34:16  3.5  0.15 124
PPM 137316     19:59:24.6 +19:44:48  8.2  0.13 124
PPM 137351     20:00:07.5 +19:41:25  9.7  0.05 124
342842         19:59:56.7 +19:43:28 13.9       123
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 26.9 km RECON observability=1.0 and success probability=21.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:12:26 -15.9 AT Down 52.8 137.1 Up 08:09:56 - 08:14:56 1102
Sleaford 08:11:49 -13.1 AT Down 56.3 160.0 Up 08:09:19 - 08:14:19 1088
Kelowna 08:12:25 -16.7 AT Down 53.8 137.6 Up 08:09:55 - 08:14:55 1017
Peachland 08:12:26 -16.8 AT Down 53.8 137.1 Up 08:09:56 - 08:14:56 1010
Summerland 08:12:26 -16.9 AT Down 53.9 137.1 Up 08:09:56 - 08:14:56 995
Penticton 08:12:26 -17.0 AT Down 54.0 137.2 Up 08:09:56 - 08:14:56 988
Oliver 08:12:26 -17.3 AT Down 54.3 136.8 Up 08:09:56 - 08:14:56 955
Victoria 08:12:37 -18.0 Dark Down 52.9 131.0 Up 08:10:07 - 08:15:07 946
Anarchist Mountain Observatory 08:12:26 -17.5 AT Down 54.5 137.0 Up 08:09:56 - 08:14:56 937
Tonasket 08:12:27 -17.8 AT Down 54.7 136.6 Up 08:09:57 - 08:14:57 909
Okanogan 08:12:27 -18.2 Dark Down 54.9 136.0 Up 08:09:57 - 08:14:57 879
Brewster 08:12:28 -18.4 Dark Down 55.0 135.5 Up 08:09:58 - 08:14:58 856
Manson/Chelan 08:12:30 -18.7 Dark Down 55.0 134.7 Up 08:10:00 - 08:15:00 842
Wenatchee 08:12:31 -19.1 Dark Down 55.2 134.0 Up 08:10:01 - 08:15:01 799
Ellensburg 08:12:32 -19.6 Dark Down 55.4 133.3 Up 08:10:02 - 08:15:02 764
Yakima 08:12:33 -20.0 Dark Down 55.7 132.8 Up 08:10:03 - 08:15:03 725
Toppenish/White Swan 08:12:33 -20.2 Dark Down 55.9 132.8 Up 08:10:03 - 08:15:03 702
Goldendale 08:12:34 -20.7 Dark Down 56.0 131.6 Up 08:10:04 - 08:15:04 655
PNWRO 08:12:29 -20.5 Dark Down 56.9 134.6 Up 08:09:59 - 08:14:59 646
The Dalles 08:12:36 -21.0 Dark Down 56.0 130.9 Up 08:10:06 - 08:15:06 639
Maupin 08:12:36 -21.4 Dark Down 56.3 130.6 Up 08:10:06 - 08:15:06 597
Sisters 08:12:39 -22.3 Dark Down 56.6 128.9 Up 08:10:09 - 08:15:09 520
Bend 08:12:38 -22.5 Dark Down 56.9 128.9 Up 08:10:08 - 08:15:08 493
Oregon Observatory 08:12:39 -22.7 Dark Down 57.0 128.6 Up 08:10:09 - 08:15:09 478
North Lake 08:12:38 -23.3 Dark Down 57.7 128.5 Up 08:10:08 - 08:15:08 408
Chiloquin 08:12:42 -24.0 Dark Down 57.5 126.4 Up 08:10:12 - 08:15:12 356
Klamath Falls 08:12:42 -24.3 Dark Down 57.8 126.1 Up 08:10:12 - 08:15:12 321
Lakeview 08:12:38 -24.4 Dark Down 58.6 128.0 Up 08:10:08 - 08:15:08 295
Cedarville 08:12:39 -25.0 Dark Down 59.1 127.4 Up 08:10:09 - 08:15:09 228
Fall River/Burney 08:12:43 -25.5 Dark Down 58.7 125.0 Up 08:10:13 - 08:15:13 198
Susanville 08:12:42 -26.1 Dark Down 59.5 125.2 Up 08:10:12 - 08:15:12 124
Greenville 08:12:43 -26.4 Dark Down 59.5 124.4 Up 08:10:13 - 08:15:13 101
Gimple 08:12:43 -26.4 Dark Down 59.5 124.5 Up 08:10:13 - 08:15:13 99
Quincy 08:12:43 -26.6 Dark Down 59.6 124.1 Up 08:10:13 - 08:15:13 80
Portola 08:12:42 -26.7 Dark Down 60.0 124.6 Up 08:10:12 - 08:15:12 60
Reno 08:12:40 -27.0 Dark Down 60.5 125.1 Up 08:10:10 - 08:15:10 23
Carson City 08:12:41 -27.3 Dark Down 60.8 124.6 Up 08:10:11 - 08:15:11 -13
Gardnerville 08:12:41 -27.6 Dark Down 60.9 124.3 Up 08:10:11 - 08:15:11 -39
Yerington 08:12:39 -27.5 Dark Down 61.3 125.2 Up 08:10:09 - 08:15:09 -43
Dunrhomin 08:11:55 -24.3 Dark Down 67.4 152.6 Up 08:09:25 - 08:14:25 -79
Hawthorne 08:12:38 -27.9 Dark Down 61.9 125.3 Up 08:10:08 - 08:15:08 -98
CU-SBO 08:11:56 -24.6 Dark Down 67.6 152.1 Up 08:09:26 - 08:14:26 -104
Lee Vining 08:12:40 -28.5 Dark Down 61.9 123.7 Up 08:10:10 - 08:15:10 -148
Tonopah 08:12:34 -28.3 Dark Down 63.0 126.7 Up 08:10:04 - 08:15:04 -166
Bishop 08:12:39 -29.1 Dark Down 62.7 123.8 Up 08:10:09 - 08:15:09 -221
Beatty 08:12:34 -29.4 Dark Down 64.0 125.5 Up 08:10:04 - 08:15:04 -292
Indian Springs 08:12:31 -29.6 Dark Down 64.9 126.7 Up 08:10:01 - 08:15:01 -342
Henderson 08:12:30 -30.1 Dark Down 65.7 126.9 Up 08:10:00 - 08:15:00 -407
Patrick 08:12:27 -30.6 Dark Down 66.8 127.6 Up 08:09:57 - 08:14:57 -488
Laughlin/Bullhead City 08:12:29 -30.9 Dark Down 66.4 126.0 Up 08:09:59 - 08:14:59 -504
Kingman/Dolan Springs 08:12:28 -30.8 Dark Down 66.8 126.9 Up 08:09:58 - 08:14:58 -508
Mohave Valley 08:12:29 -31.2 Dark Down 66.6 125.5 Up 08:09:59 - 08:14:59 -533
Wildwood 08:12:43 -32.3 Dark Down 64.2 117.9 Up 08:10:13 - 08:15:13 -557
Lake Havasu City 08:12:29 -31.5 Dark Down 67.0 125.1 Up 08:09:59 - 08:14:59 -578
Parker 08:12:29 -31.9 Dark Down 67.2 124.5 Up 08:09:59 - 08:14:59 -615
Idyllwild 08:12:38 -32.6 Dark Down 65.8 119.9 Up 08:10:08 - 08:15:08 -623
George/Scottsdale 08:12:22 -32.0 Dark Down 69.1 127.9 Up 08:09:52 - 08:14:52 -693
Calipatria 08:12:34 -33.0 Dark Down 66.9 120.5 Up 08:10:04 - 08:15:04 -705
Yuma 08:12:32 -33.4 Dark Down 67.8 121.0 Up 08:10:02 - 08:15:02 -764

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, (2028/06/22 08:11UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 26.04 114
Tarazed        19:46:15.6 +10:36:48  2.7  9.52 133
12Gam Sge      19:58:45.5 +19:29:32  3.5  0.15 124
PPM 137316     19:58:08.9 +19:40:06  8.2  0.13 124
PPM 137351     19:58:51.7 +19:36:41  9.7  0.05 124
342842         19:58:41.0 +19:38:44 13.9       124
Positions are for J2000

Event circumstances last updated at 2022/02/14 02:26:39 UT

Marc W. Buie, Southwest Research Institute

RECON