RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1260:06763240 with event index number of 2203293

Geocentric closest approach at 2024/08/23 08:09:59 UTC

J2000 position of star is 19:49:38.3 +36:00:43
Equinox of date position of star is 19:50:26.8 +36:04:05
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 15.5 AU from the Sun and 14.9 AU from the Earth.
The TNO is moving 33.0 km/sec on the sky relative to the star, or, 11.0 arcsec/hr.
The 1-sigma error in the time of the event is 33 seconds.
The 1-sigma cross-track error in the shadow position is 1177 km.
The sky-plane scale is 10811.4 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, (2024/08/23 08:11UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:16.4 +45:22:10  1.3 13.47  68
37Gam Cyg      20:23:06.8 +40:20:12  2.2  7.68  71
21Eta Cyg      19:57:13.9 +35:09:01  3.9  1.64  76
PPM 083646     19:51:14.4 +36:09:43  7.1  0.16  77
342842         19:50:32.9 +36:04:31 15.7        77
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 25.8 km RECON observability=1.0 and success probability=13.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:08:24 -28.1 Dark Up 60.1 254.8 Up 08:05:10 - 08:11:39 -1711
Sleaford 08:07:59 -25.3 Dark Up 51.1 266.1 Up 08:04:44 - 08:11:13 -1766
Kelowna 08:08:23 -28.9 Dark Up 59.8 257.1 Up 08:05:09 - 08:11:38 -1817
Peachland 08:08:24 -29.0 Dark Up 60.0 257.0 Up 08:05:10 - 08:11:39 -1822
Summerland 08:08:24 -29.2 Dark Up 60.0 257.3 Up 08:05:10 - 08:11:39 -1840
Penticton 08:08:24 -29.2 Dark Up 59.9 257.5 Up 08:05:09 - 08:11:38 -1849
Victoria 08:08:32 -30.2 Dark Up 62.6 255.4 Up 08:05:17 - 08:11:46 -1867
Oliver 08:08:24 -29.6 Dark Up 60.0 258.1 Up 08:05:10 - 08:11:39 -1887
Anarchist Mountain Observatory 08:08:24 -29.7 Dark Up 59.9 258.6 Up 08:05:10 - 08:11:39 -1909
Tonasket 08:08:24 -30.0 Dark Up 60.0 259.1 Up 08:05:10 - 08:11:39 -1940
Okanogan 08:08:25 -30.4 Dark Up 60.2 259.5 Up 08:05:10 - 08:11:39 -1973
Brewster 08:08:26 -30.7 Dark Up 60.3 259.8 Up 08:05:11 - 08:11:40 -1997
Manson/Chelan 08:08:27 -30.9 Dark Up 60.6 259.8 Up 08:05:12 - 08:11:41 -2011
Wenatchee 08:08:28 -31.4 Dark Up 60.8 260.5 Up 08:05:13 - 08:11:42 -2058
Ellensburg 08:08:28 -31.8 Dark Up 61.0 261.0 Up 08:05:14 - 08:11:43 -2096
Yakima 08:08:28 -32.2 Dark Up 61.1 261.7 Up 08:05:14 - 08:11:43 -2139
Toppenish/White Swan 08:08:28 -32.4 Dark Up 61.0 262.2 Up 08:05:14 - 08:11:43 -2165
Pasco 08:08:26 -32.5 Dark Up 60.2 263.6 Up 08:05:11 - 08:11:40 -2207
Goldendale 08:08:30 -32.9 Dark Up 61.4 262.9 Up 08:05:16 - 08:11:45 -2214
The Dalles 08:08:31 -33.2 Dark Up 61.6 263.0 Up 08:05:16 - 08:11:45 -2228
PNWRO 08:08:26 -32.7 Dark Up 60.0 264.2 Up 08:05:12 - 08:11:41 -2238
Maupin 08:08:31 -33.6 Dark Up 61.6 263.8 Up 08:05:17 - 08:11:46 -2275
Sisters 08:08:33 -34.5 Dark Up 62.0 265.1 Up 08:05:19 - 08:11:48 -2355
Redmond 08:08:32 -34.5 Dark Up 61.8 265.4 Up 08:05:18 - 08:11:47 -2368
Bend 08:08:32 -34.7 Dark Up 61.9 265.7 Up 08:05:18 - 08:11:47 -2387
Oregon Observatory 08:08:33 -34.9 Dark Up 62.0 265.9 Up 08:05:19 - 08:11:48 -2401
La Pine/Gilchrist 08:08:33 -35.1 Dark Up 62.0 266.3 Up 08:05:19 - 08:11:48 -2421
North Lake 08:08:33 -35.5 Dark Up 61.6 267.5 Up 08:05:18 - 08:11:47 -2482
Chiloquin 08:08:36 -36.2 Dark Up 62.3 268.1 Up 08:05:21 - 08:11:50 -2528
Paisley 08:08:33 -36.1 Dark Up 61.4 268.8 Up 08:05:18 - 08:11:47 -2549
Klamath Falls 08:08:36 -36.5 Dark Up 62.3 268.8 Up 08:05:21 - 08:11:50 -2566
Lakeview 08:08:33 -36.6 Dark Up 61.2 269.9 Up 08:05:18 - 08:11:47 -2606
Cedarville 08:08:33 -37.2 Dark Up 61.1 271.2 Up 08:05:19 - 08:11:48 -2679
Fall River/Burney 08:08:37 -37.7 Dark Up 62.0 271.3 Up 08:05:22 - 08:11:51 -2698
Susanville 08:08:36 -38.4 Dark Up 61.4 272.9 Up 08:05:21 - 08:11:50 -2783
Greenville 08:08:37 -38.6 Dark Up 61.6 273.3 Up 08:05:22 - 08:11:51 -2804
Gimple 08:08:36 -38.6 Dark Up 61.6 273.3 Up 08:05:21 - 08:11:50 -2806
Quincy 08:08:37 -38.8 Dark Up 61.6 273.6 Up 08:05:22 - 08:11:51 -2825
Portola 08:08:36 -39.0 Dark Up 61.2 274.1 Up 08:05:21 - 08:11:50 -2850
Reno 08:08:35 -39.2 Dark Up 60.7 275.0 Up 08:05:20 - 08:11:49 -2894
Carson City 08:08:35 -39.6 Dark Up 60.7 275.6 Up 08:05:21 - 08:11:50 -2932
Gardnerville 08:08:35 -39.8 Dark Up 60.6 276.1 Up 08:05:21 - 08:11:50 -2959
Yerington 08:08:34 -39.7 Dark Up 60.2 276.3 Up 08:05:20 - 08:11:49 -2968
Hawthorne 08:08:34 -40.2 Dark Up 59.7 277.3 Up 08:05:19 - 08:11:48 -3029
Dunrhomin 08:08:04 -36.4 Dark Up 49.8 281.1 Up 08:04:50 - 08:11:19 -3066
Lee Vining 08:08:35 -40.8 Dark Up 60.0 278.1 Up 08:05:21 - 08:11:50 -3076
Tonopah 08:08:31 -40.6 Dark Up 58.5 278.7 Up 08:05:17 - 08:11:46 -3111
Bishop 08:08:34 -41.3 Dark Up 59.3 279.4 Up 08:05:20 - 08:11:49 -3155
Beatty 08:08:31 -41.7 Dark Up 58.0 280.7 Up 08:05:17 - 08:11:46 -3241
Indian Springs 08:08:30 -41.9 Dark Up 57.1 281.6 Up 08:05:15 - 08:11:44 -3299
CPSLO 08:08:42 -43.5 Dark Up 60.7 282.1 Up 08:05:28 - 08:11:57 -3306
Henderson 08:08:28 -42.3 Dark Up 56.4 282.6 Up 08:05:14 - 08:11:43 -3369
Patrick 08:08:27 -42.8 Dark Up 55.4 283.9 Up 08:05:13 - 08:11:42 -3456
Laughlin/Bullhead City 08:08:28 -43.1 Dark Up 55.9 284.0 Up 08:05:14 - 08:11:43 -3467
Kingman/Dolan Springs 08:08:28 -43.1 Dark Up 55.5 284.1 Up 08:05:13 - 08:11:42 -3475
Wildwood 08:08:39 -44.6 Dark Up 58.8 284.6 Up 08:05:24 - 08:11:53 -3484
Mohave Valley 08:08:29 -43.4 Dark Up 55.8 284.4 Up 08:05:14 - 08:11:43 -3495
Lake Havasu City 08:08:29 -43.8 Dark Up 55.5 285.0 Up 08:05:15 - 08:11:44 -3541
Idyllwild 08:08:35 -44.8 Dark Up 57.2 285.6 Up 08:05:21 - 08:11:50 -3567
Parker 08:08:29 -44.1 Dark Up 55.4 285.5 Up 08:05:15 - 08:11:44 -3578
Blythe 08:08:30 -44.7 Dark Up 55.5 286.2 Up 08:05:16 - 08:11:45 -3625
Calipatria 08:08:33 -45.3 Dark Up 56.1 286.7 Up 08:05:19 - 08:11:48 -3655
George/Scottsdale 08:08:24 -44.1 Dark Up 53.4 286.7 Up 08:05:10 - 08:11:39 -3668
Yuma 08:08:32 -45.6 Dark Up 55.3 287.5 Up 08:05:17 - 08:11:46 -3719

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, (2024/08/23 08:11UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 13.47  68
37Gam Cyg      20:22:13.7 +40:15:24  2.2  7.68  71
21Eta Cyg      19:56:18.3 +35:05:00  3.9  1.64  76
PPM 083646     19:50:19.9 +36:05:54  7.1  0.16  77
342842         19:49:38.3 +36:00:43 15.7        77
Positions are for J2000

Event circumstances last updated at 2021/11/16 00:54:41 UT

Marc W. Buie, Southwest Research Institute

RECON