RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1300:06383514 with event index number of 2202285

Geocentric closest approach at 2023/09/02 10:06:32 UTC

J2000 position of star is 19:48:58.7 +40:25:33
Equinox of date position of star is 19:49:43.8 +40:28:55
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 76 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 15.1 AU from the Sun and 14.6 AU from the Earth.
The TNO is moving 33.6 km/sec on the sky relative to the star, or, 11.4 arcsec/hr.
The 1-sigma error in the time of the event is 32 seconds.
The 1-sigma cross-track error in the shadow position is 909 km.
The sky-plane scale is 10567.2 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.5 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2023/09/02 10:08UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:14.4 +45:21:57  1.3 10.75  68
37Gam Cyg      20:23:04.7 +40:20:01  2.2  6.34  70
PPM 083550     19:48:18.2 +38:28:03  5.6  2.04  76
PPM 058801     19:46:37.3 +40:36:51  7.3  0.62  77
PPM 058868     19:49:10.1 +40:28:40  9.8  0.12  76
342842         19:49:47.5 +40:29:11 15.0        76
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 26.1 km RECON observability=1.0 and success probability=46.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:03:51 -18.7 Dark Up 31.3 297.1 Up 10:00:40 - 10:07:03 31
Kamloops 10:04:09 -25.6 Dark Up 39.0 289.2 Up 10:00:57 - 10:07:20 -404
Kelowna 10:04:07 -26.0 Dark Up 38.1 290.4 Up 10:00:56 - 10:07:19 -479
Peachland 10:04:08 -26.2 Dark Up 38.3 290.3 Up 10:00:56 - 10:07:19 -495
Summerland 10:04:08 -26.3 Dark Up 38.2 290.4 Up 10:00:56 - 10:07:19 -509
Penticton 10:04:08 -26.3 Dark Up 38.1 290.5 Up 10:00:56 - 10:07:19 -515
Oliver 10:04:08 -26.6 Dark Up 38.0 290.8 Up 10:00:56 - 10:07:19 -553
Anarchist Mountain Observatory 10:04:07 -26.6 Dark Up 37.8 291.0 Up 10:00:56 - 10:07:19 -568
Tonasket 10:04:07 -26.9 Dark Up 37.7 291.2 Up 10:00:56 - 10:07:19 -602
Okanogan 10:04:08 -27.3 Dark Up 37.7 291.4 Up 10:00:57 - 10:07:20 -640
Victoria 10:04:14 -28.5 Dark Up 40.1 289.1 Up 10:01:02 - 10:07:25 -669
Brewster 10:04:08 -27.5 Dark Up 37.7 291.5 Up 10:00:57 - 10:07:20 -672
Manson/Chelan 10:04:09 -27.9 Dark Up 37.9 291.4 Up 10:00:57 - 10:07:20 -699
Wenatchee 10:04:09 -28.3 Dark Up 37.8 291.7 Up 10:00:58 - 10:07:21 -752
Ellensburg 10:04:09 -28.7 Dark Up 37.8 291.8 Up 10:00:58 - 10:07:21 -799
Yakima 10:04:10 -29.1 Dark Up 37.6 292.1 Up 10:00:58 - 10:07:21 -842
Pasco 10:04:08 -28.8 Dark Up 36.6 293.1 Up 10:00:56 - 10:07:19 -857
Toppenish/White Swan 10:04:09 -29.2 Dark Up 37.4 292.4 Up 10:00:58 - 10:07:21 -862
PNWRO 10:04:07 -28.9 Dark Up 36.3 293.4 Up 10:00:56 - 10:07:19 -879
Goldendale 10:04:10 -29.8 Dark Up 37.5 292.5 Up 10:00:59 - 10:07:22 -927
The Dalles 10:04:11 -30.1 Dark Up 37.7 292.5 Up 10:00:59 - 10:07:22 -955
Maupin 10:04:11 -30.4 Dark Up 37.4 292.9 Up 10:00:59 - 10:07:22 -998
Redmond 10:04:11 -31.2 Dark Up 37.1 293.4 Up 10:01:00 - 10:07:23 -1094
Sisters 10:04:12 -31.4 Dark Up 37.4 293.2 Up 10:01:00 - 10:07:23 -1097
Bend 10:04:11 -31.4 Dark Up 37.1 293.5 Up 10:01:00 - 10:07:23 -1119
Dunrhomin 10:03:49 -25.9 Dark Up 24.9 303.0 Low 10:00:38 - 10:07:01 -1124
Oregon Observatory 10:04:12 -31.6 Dark Up 37.1 293.6 Up 10:01:00 - 10:07:23 -1139
La Pine/Gilchrist 10:04:12 -31.8 Dark Up 37.1 293.7 Up 10:01:01 - 10:07:24 -1161
North Lake 10:04:11 -31.9 Dark Up 36.5 294.3 Up 10:01:00 - 10:07:23 -1198
Paisley 10:04:11 -32.2 Dark Up 36.1 294.8 Up 10:00:59 - 10:07:22 -1250
Chiloquin 10:04:13 -32.9 Dark Up 36.9 294.3 Up 10:01:02 - 10:07:25 -1281
Lakeview 10:04:11 -32.5 Dark Up 35.7 295.2 Up 10:00:59 - 10:07:22 -1300
Klamath Falls 10:04:13 -33.1 Dark Up 36.7 294.6 Up 10:01:02 - 10:07:25 -1316
Cedarville 10:04:11 -33.0 Dark Up 35.3 295.7 Up 10:01:00 - 10:07:23 -1365
Fall River/Burney 10:04:13 -33.9 Dark Up 35.9 295.5 Up 10:01:01 - 10:07:24 -1432
Susanville 10:04:12 -34.1 Dark Up 35.2 296.2 Up 10:01:00 - 10:07:23 -1486
Gimple 10:04:13 -34.4 Dark Up 35.2 296.3 Up 10:01:01 - 10:07:24 -1518
Greenville 10:04:13 -34.5 Dark Up 35.2 296.3 Up 10:01:01 - 10:07:24 -1519
Quincy 10:04:13 -34.6 Dark Up 35.1 296.4 Up 10:01:01 - 10:07:24 -1539
Portola 10:04:12 -34.5 Dark Up 34.8 296.7 Up 10:01:01 - 10:07:24 -1545
Reno 10:04:11 -34.4 Dark Up 34.2 297.1 Up 10:00:59 - 10:07:22 -1562
Carson City 10:04:11 -34.7 Dark Up 34.0 297.3 Up 10:01:00 - 10:07:23 -1598
Yerington 10:04:10 -34.5 Dark Up 33.5 297.7 Up 10:00:59 - 10:07:22 -1607
Gardnerville 10:04:11 -34.8 Dark Up 33.9 297.5 Up 10:01:00 - 10:07:23 -1622
Hawthorne 10:04:10 -34.6 Dark Up 32.9 298.2 Up 10:00:58 - 10:07:21 -1644
Tonopah 10:04:07 -34.2 Dark Up 31.7 299.0 Up 10:00:56 - 10:07:19 -1665
Lee Vining 10:04:11 -35.3 Dark Up 33.0 298.3 Up 10:01:00 - 10:07:23 -1710
Bishop 10:04:10 -35.4 Dark Up 32.2 298.9 Up 10:00:58 - 10:07:21 -1756
Beatty 10:04:07 -34.8 Dark Up 30.8 299.8 Up 10:00:56 - 10:07:19 -1770
Indian Springs 10:04:06 -34.5 Dark Up 29.9 300.3 Low 10:00:55 - 10:07:18 -1778
Henderson 10:04:05 -34.5 Dark Up 29.2 300.8 Low 10:00:54 - 10:07:17 -1815
Patrick 10:04:04 -34.3 Dark Up 28.1 301.5 Low 10:00:52 - 10:07:15 -1849
Kingman/Dolan Springs 10:04:04 -34.5 Dark Up 28.1 301.5 Low 10:00:53 - 10:07:16 -1875
Laughlin/Bullhead City 10:04:05 -34.8 Dark Up 28.4 301.4 Low 10:00:53 - 10:07:16 -1889
Mohave Valley 10:04:05 -35.0 Dark Up 28.3 301.5 Low 10:00:54 - 10:07:17 -1915
Lake Havasu City 10:04:05 -35.2 Dark Up 27.9 301.8 Low 10:00:53 - 10:07:16 -1948
George/Scottsdale 10:04:02 -34.2 Dark Up 25.8 302.9 Low 10:00:50 - 10:07:13 -1957
Parker 10:04:05 -35.4 Dark Up 27.7 301.9 Low 10:00:54 - 10:07:17 -1981
CPSLO 10:04:15 -38.1 Dark Up 32.8 299.3 Up 10:01:04 - 10:07:27 -1998
Blythe 10:04:06 -35.9 Dark Up 27.6 302.1 Low 10:00:55 - 10:07:18 -2038
Idyllwild 10:04:10 -37.1 Dark Up 29.2 301.3 Low 10:00:58 - 10:07:21 -2077
Wildwood 10:04:13 -37.9 Dark Up 30.7 300.6 Up 10:01:01 - 10:07:24 -2080
Calipatria 10:04:08 -36.8 Dark Up 28.0 302.0 Low 10:00:56 - 10:07:19 -2108
Yuma 10:04:07 -36.6 Dark Up 27.2 302.5 Low 10:00:55 - 10:07:18 -2127

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, (2023/09/02 10:08UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 10.75  68
37Gam Cyg      20:22:13.7 +40:15:24  2.2  6.34  70
PPM 083550     19:47:27.8 +38:24:28  5.6  2.04  76
PPM 058801     19:45:48.7 +40:33:19  7.3  0.62  77
PPM 058868     19:48:21.2 +40:25:04  9.8  0.12  76
342842         19:48:58.7 +40:25:33 15.0        76
Positions are for J2000

Event circumstances last updated at 2021/11/15 00:56:24 UT

Marc W. Buie, Southwest Research Institute

RECON