RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1260:07732055 with event index number of 2203163

Geocentric closest approach at 2024/07/25 08:35:47 UTC

J2000 position of star is 19:58:23.7 +37:07:37
Equinox of date position of star is 19:59:11.6 +37:11:14
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 66 degrees from the moon. Moon is 80% 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 31.4 km/sec on the sky relative to the star, or, 10.5 arcsec/hr.
The 1-sigma error in the time of the event is 26 seconds.
The 1-sigma cross-track error in the shadow position is 1431 km.
The sky-plane scale is 10778.2 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.7 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2024/07/25 08:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:16.2 +45:22:09  1.3 11.47  63
37Gam Cyg      20:23:06.6 +40:20:11  2.2  5.60  63
25 Cyg         20:00:49.2 +37:06:41  5.0  0.32  66
PPM 083949     19:59:45.3 +37:48:17  8.5  0.62  66
PPM 083954     19:59:52.5 +37:14:07  9.6  0.12  66
PPM 083928     19:59:15.3 +37:15:06 10.5  0.06  66
342842         19:59:17.6 +37:11:41 14.2        66
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 27.4 km RECON observability=1.0 and success probability=15.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 08:35:03 -19.9 Dark Up 73.7 221.3 Up 08:32:24 - 08:37:42 3806
Kelowna 08:35:03 -20.3 Dark Up 74.1 221.8 Up 08:32:24 - 08:37:42 3767
Peachland 08:35:04 -20.4 Dark Up 74.3 221.4 Up 08:32:25 - 08:37:43 3760
Summerland 08:35:04 -20.6 Dark Up 74.4 221.9 Up 08:32:25 - 08:37:43 3743
Penticton 08:35:04 -20.6 Dark Up 74.4 222.4 Up 08:32:25 - 08:37:43 3734
Oliver 08:35:04 -21.0 Dark Up 74.6 223.2 Up 08:32:25 - 08:37:43 3696
Victoria 08:35:12 -21.9 Dark Up 76.7 214.3 Up 08:32:33 - 08:37:51 3696
Anarchist Mountain Observatory 08:35:04 -21.1 Dark Up 74.7 224.2 Up 08:32:25 - 08:37:43 3675
Tonasket 08:35:04 -21.4 Dark Up 74.9 224.8 Up 08:32:25 - 08:37:43 3643
Okanogan 08:35:04 -21.8 Dark Up 75.2 225.3 Up 08:32:25 - 08:37:43 3609
Brewster 08:35:05 -22.1 Dark Up 75.5 225.5 Up 08:32:26 - 08:37:44 3583
Manson/Chelan 08:35:06 -22.3 Dark Up 75.8 225.2 Up 08:32:27 - 08:37:45 3567
Wenatchee 08:35:07 -22.8 Dark Up 76.3 226.1 Up 08:32:28 - 08:37:46 3519
Ellensburg 08:35:08 -23.2 Dark Up 76.6 226.8 Up 08:32:29 - 08:37:47 3479
Yakima 08:35:08 -23.6 Dark Up 76.9 228.0 Up 08:32:29 - 08:37:47 3436
Toppenish/White Swan 08:35:08 -23.8 Dark Up 77.0 229.1 Up 08:32:29 - 08:37:47 3410
Pasco 08:35:05 -23.8 Dark Up 76.4 232.8 Up 08:32:26 - 08:37:44 3374
Goldendale 08:35:09 -24.4 Dark Up 77.6 229.9 Up 08:32:30 - 08:37:48 3358
PNWRO 08:35:05 -24.1 Dark Up 76.4 234.1 Up 08:32:26 - 08:37:44 3343
The Dalles 08:35:10 -24.7 Dark Up 77.9 229.6 Up 08:32:31 - 08:37:49 3341
Maupin 08:35:11 -25.1 Dark Up 78.1 231.5 Up 08:32:32 - 08:37:50 3294
Sisters 08:35:12 -26.0 Dark Up 78.9 233.5 Up 08:32:33 - 08:37:51 3209
Redmond 08:35:12 -26.0 Dark Up 78.7 234.7 Up 08:32:33 - 08:37:51 3198
Bend 08:35:12 -26.2 Dark Up 78.9 235.2 Up 08:32:33 - 08:37:51 3178
Oregon Observatory 08:35:12 -26.4 Dark Up 79.1 235.6 Up 08:32:33 - 08:37:51 3162
La Pine/Gilchrist 08:35:12 -26.6 Dark Up 79.2 236.3 Up 08:32:33 - 08:37:51 3141
North Lake 08:35:12 -27.0 Dark Up 79.1 239.9 Up 08:32:33 - 08:37:51 3082
Chiloquin 08:35:14 -27.7 Dark Up 80.0 240.6 Up 08:32:35 - 08:37:53 3029
Paisley 08:35:11 -27.5 Dark Up 79.1 243.3 Up 08:32:32 - 08:37:50 3016
Klamath Falls 08:35:14 -28.1 Dark Up 80.1 242.5 Up 08:32:35 - 08:37:53 2990
Lakeview 08:35:11 -28.0 Dark Up 79.2 246.1 Up 08:32:32 - 08:37:50 2958
Cedarville 08:35:11 -28.6 Dark Up 79.3 249.7 Up 08:32:32 - 08:37:50 2883
Fall River/Burney 08:35:15 -29.2 Dark Up 80.4 249.7 Up 08:32:36 - 08:37:54 2856
Susanville 08:35:13 -29.8 Dark Up 80.0 254.6 Up 08:32:34 - 08:37:52 2772
Greenville 08:35:14 -30.1 Dark Up 80.3 255.7 Up 08:32:35 - 08:37:53 2749
Gimple 08:35:14 -30.1 Dark Up 80.2 255.8 Up 08:32:35 - 08:37:53 2747
Quincy 08:35:14 -30.3 Dark Up 80.4 256.8 Up 08:32:35 - 08:37:53 2727
Portola 08:35:13 -30.3 Dark Up 80.0 258.3 Up 08:32:34 - 08:37:52 2703
Reno 08:35:11 -30.5 Dark Up 79.6 260.7 Up 08:32:32 - 08:37:50 2662
Carson City 08:35:12 -30.9 Dark Up 79.6 262.6 Up 08:32:33 - 08:37:51 2623
Gardnerville 08:35:12 -31.1 Dark Up 79.6 264.0 Up 08:32:33 - 08:37:51 2595
Yerington 08:35:10 -31.0 Dark Up 79.2 264.4 Up 08:32:31 - 08:37:49 2589
Dunrhomin 08:34:34 -26.9 Dark Up 68.5 270.5 Up 08:31:55 - 08:37:13 2555
Hawthorne 08:35:09 -31.4 Dark Up 78.8 267.2 Up 08:32:30 - 08:37:48 2529
Lee Vining 08:35:11 -32.0 Dark Up 79.2 269.8 Up 08:32:32 - 08:37:50 2477
Tonopah 08:35:06 -31.7 Dark Up 77.7 270.4 Up 08:32:27 - 08:37:45 2452
Bishop 08:35:09 -32.5 Dark Up 78.6 273.2 Up 08:32:30 - 08:37:48 2398
Beatty 08:35:05 -32.7 Dark Up 77.3 275.8 Up 08:32:26 - 08:37:44 2319
Indian Springs 08:35:03 -32.9 Dark Up 76.4 277.4 Up 08:32:24 - 08:37:42 2265
CPSLO 08:35:17 -34.8 Dark Up 80.1 284.1 Up 08:32:38 - 08:37:56 2222
Henderson 08:35:01 -33.3 Dark Up 75.7 279.6 Up 08:32:22 - 08:37:40 2196
Patrick 08:34:59 -33.7 Dark Up 74.7 282.0 Up 08:32:20 - 08:37:38 2110
Laughlin/Bullhead City 08:35:01 -34.0 Dark Up 75.3 282.9 Up 08:32:22 - 08:37:40 2094
Kingman/Dolan Springs 08:34:59 -33.9 Dark Up 74.8 282.8 Up 08:32:20 - 08:37:38 2089
Mohave Valley 08:35:01 -34.3 Dark Up 75.2 283.9 Up 08:32:22 - 08:37:40 2065
Wildwood 08:35:13 -35.8 Dark Up 78.1 288.8 Up 08:32:34 - 08:37:52 2049
Lake Havasu City 08:35:00 -34.6 Dark Up 74.9 285.3 Up 08:32:21 - 08:37:39 2017
Parker 08:35:00 -35.0 Dark Up 74.8 286.6 Up 08:32:21 - 08:37:39 1979
Idyllwild 08:35:08 -35.8 Dark Up 76.5 289.1 Up 08:32:29 - 08:37:47 1975
Blythe 08:35:01 -35.5 Dark Up 74.8 288.5 Up 08:32:22 - 08:37:40 1926
George/Scottsdale 08:34:54 -34.8 Dark Up 72.7 287.3 Up 08:32:15 - 08:37:33 1897
Calipatria 08:35:05 -36.2 Dark Up 75.4 290.7 Up 08:32:26 - 08:37:44 1888
Yuma 08:35:02 -36.4 Dark Up 74.6 291.7 Up 08:32:23 - 08:37:41 1827

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, (2024/07/25 08:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 11.47  63
37Gam Cyg      20:22:13.7 +40:15:24  2.2  5.60  63
25 Cyg         19:59:55.1 +37:02:34  5.0  0.32  66
PPM 083949     19:58:51.8 +37:44:13  8.5  0.62  66
PPM 083954     19:58:58.6 +37:10:02  9.6  0.12  66
PPM 083928     19:58:21.4 +37:11:02 10.5  0.06  66
342842         19:58:23.7 +37:07:37 14.2        66
Positions are for J2000

Event circumstances last updated at 2021/10/28 23:15:13 UT

Marc W. Buie, Southwest Research Institute

RECON