RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1260:07732055 with event index number of 1418399

Geocentric closest approach at 2024/07/25 08:35:39 UTC

J2000 position of star is 19:58:23.7 +37:07:37
Equinox of date position of star is 19:59:07.4 +37:10:55
Stellar brightness G=14.2, use SENSEUP=64
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 34 seconds.
The 1-sigma cross-track error in the shadow position is 2054 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 26.3 km RECON observability=1.0 and success probability=15.5%
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 08:34:55 -19.9 Dark Up 73.8 221.2 Up 08:31:36 - 08:38:14 4074
Kelowna 08:34:55 -20.3 Dark Up 74.1 221.7 Up 08:31:36 - 08:38:14 4036
Summerland 08:34:56 -20.6 Dark Up 74.4 221.9 Up 08:31:37 - 08:38:15 4010
Penticton 08:34:56 -20.6 Dark Up 74.4 222.3 Up 08:31:37 - 08:38:15 4002
Oliver 08:34:56 -21.0 Dark Up 74.7 223.2 Up 08:31:37 - 08:38:15 3964
Victoria 08:35:05 -21.9 Dark Up 76.7 214.2 Up 08:31:46 - 08:38:24 3963
Anarchist Mountain Observatory 08:34:56 -21.1 Dark Up 74.7 224.1 Up 08:31:37 - 08:38:15 3942
Tonasket 08:34:56 -21.4 Dark Up 74.9 224.7 Up 08:31:37 - 08:38:15 3910
Okanogan 08:34:57 -21.8 Dark Up 75.2 225.2 Up 08:31:38 - 08:38:16 3877
Brewster 08:34:57 -22.1 Dark Up 75.5 225.4 Up 08:31:38 - 08:38:16 3851
Manson/Chelan 08:34:58 -22.3 Dark Up 75.9 225.1 Up 08:31:39 - 08:38:17 3835
Entiat 08:34:58 -22.5 Dark Up 76.0 225.5 Up 08:31:39 - 08:38:17 3813
Wenatchee 08:34:59 -22.8 Dark Up 76.3 226.0 Up 08:31:40 - 08:38:18 3787
Ellensburg 08:35:00 -23.2 Dark Up 76.7 226.7 Up 08:31:41 - 08:38:19 3747
Yakima 08:35:00 -23.6 Dark Up 76.9 227.9 Up 08:31:41 - 08:38:19 3703
Toppenish/White Swan 08:35:00 -23.8 Dark Up 77.0 229.1 Up 08:31:41 - 08:38:19 3677
Pasco 08:34:57 -23.8 Dark Up 76.4 232.7 Up 08:31:38 - 08:38:16 3642
Goldendale 08:35:01 -24.4 Dark Up 77.6 229.8 Up 08:31:42 - 08:38:20 3626
PNWRO 08:34:57 -24.1 Dark Up 76.4 234.1 Up 08:31:38 - 08:38:16 3611
The Dalles 08:35:02 -24.7 Dark Up 77.9 229.5 Up 08:31:43 - 08:38:21 3608
Maupin 08:35:02 -25.1 Dark Up 78.1 231.4 Up 08:31:43 - 08:38:21 3561
Sisters 08:35:05 -26.0 Dark Up 78.9 233.4 Up 08:31:46 - 08:38:24 3476
Redmond 08:35:04 -26.0 Dark Up 78.7 234.7 Up 08:31:45 - 08:38:23 3466
Bend 08:35:04 -26.2 Dark Up 78.9 235.1 Up 08:31:45 - 08:38:23 3446
Oregon Observatory 08:35:05 -26.4 Dark Up 79.1 235.5 Up 08:31:46 - 08:38:24 3430
La Pine/Gilchrist 08:35:05 -26.6 Dark Up 79.3 236.2 Up 08:31:46 - 08:38:24 3409
North Lake 08:35:04 -27.0 Dark Up 79.1 239.8 Up 08:31:45 - 08:38:23 3350
Paisley 08:35:03 -27.5 Dark Up 79.1 243.2 Up 08:31:44 - 08:38:22 3284
Klamath Falls 08:35:07 -28.1 Dark Up 80.2 242.4 Up 08:31:48 - 08:38:26 3258
Lakeview 08:35:03 -28.0 Dark Up 79.2 246.1 Up 08:31:44 - 08:38:22 3225
Cedarville 08:35:03 -28.6 Dark Up 79.4 249.7 Up 08:31:44 - 08:38:22 3151
Fall River/Burney 08:35:06 -29.2 Dark Up 80.4 249.6 Up 08:31:47 - 08:38:25 3123
Susanville 08:35:05 -29.8 Dark Up 80.0 254.6 Up 08:31:46 - 08:38:24 3040
Greenville 08:35:06 -30.1 Dark Up 80.3 255.6 Up 08:31:47 - 08:38:25 3016
Gimple 08:35:06 -30.1 Dark Up 80.3 255.8 Up 08:31:47 - 08:38:25 3015
Quincy 08:35:06 -30.3 Dark Up 80.4 256.8 Up 08:31:47 - 08:38:25 2995
Portola 08:35:05 -30.4 Dark Up 80.0 258.2 Up 08:31:46 - 08:38:24 2971
Reno 08:35:03 -30.6 Dark Up 79.6 260.6 Up 08:31:44 - 08:38:22 2930
Carson City 08:35:04 -30.9 Dark Up 79.6 262.6 Up 08:31:45 - 08:38:23 2890
Gardnerville 08:35:04 -31.1 Dark Up 79.6 264.0 Up 08:31:45 - 08:38:23 2863
Yerington 08:35:02 -31.0 Dark Up 79.2 264.3 Up 08:31:43 - 08:38:21 2857
Niwot 08:34:26 -27.0 Dark Up 68.5 270.9 Up 08:31:07 - 08:37:45 2806
Hawthorne 08:35:02 -31.4 Dark Up 78.8 267.2 Up 08:31:43 - 08:38:21 2796
SwRI 08:34:26 -27.1 Dark Up 68.6 271.1 Up 08:31:07 - 08:37:45 2795
Lee Vining 08:35:03 -32.0 Dark Up 79.2 269.7 Up 08:31:44 - 08:38:22 2745
Tonopah 08:34:58 -31.7 Dark Up 77.7 270.4 Up 08:31:39 - 08:38:17 2720
Bishop 08:35:02 -32.5 Dark Up 78.6 273.2 Up 08:31:43 - 08:38:21 2666
Beatty 08:34:58 -32.7 Dark Up 77.3 275.8 Up 08:31:39 - 08:38:17 2586
Indian Springs 08:34:55 -32.9 Dark Up 76.4 277.4 Up 08:31:36 - 08:38:14 2532
CPSLO 08:35:10 -34.8 Dark Up 80.1 284.1 Up 08:31:51 - 08:38:29 2490
Henderson 08:34:53 -33.3 Dark Up 75.8 279.6 Up 08:31:34 - 08:38:12 2463
Searchlight/Boulder City 08:34:54 -33.8 Dark Up 75.6 281.9 Up 08:31:35 - 08:38:13 2400
Patrick 08:34:51 -33.7 Dark Up 74.8 282.0 Up 08:31:32 - 08:38:10 2378
Laughlin/Bullhead City 08:34:53 -34.0 Dark Up 75.3 282.9 Up 08:31:34 - 08:38:12 2362
Kingman/Dolan Springs 08:34:51 -33.9 Dark Up 74.9 282.8 Up 08:31:32 - 08:38:10 2356
DCO 08:34:49 -33.8 Dark Up 74.1 283.0 Up 08:31:30 - 08:38:08 2334
Mohave Valley 08:34:53 -34.3 Dark Up 75.2 283.9 Up 08:31:34 - 08:38:12 2332
Wildwood 08:35:05 -35.8 Dark Up 78.1 288.9 Up 08:31:46 - 08:38:24 2317
Lake Havasu City 08:34:52 -34.6 Dark Up 74.9 285.3 Up 08:31:33 - 08:38:11 2285
Parker 08:34:53 -35.0 Dark Up 74.8 286.6 Up 08:31:34 - 08:38:12 2246
Idyllwild 08:35:00 -35.8 Dark Up 76.6 289.2 Up 08:31:41 - 08:38:19 2242
Blythe 08:34:54 -35.5 Dark Up 74.9 288.5 Up 08:31:35 - 08:38:13 2194
George/Scottsdale 08:34:46 -34.8 Dark Up 72.8 287.3 Up 08:31:27 - 08:38:05 2165
Calipatria 08:34:57 -36.2 Dark Up 75.4 290.8 Up 08:31:38 - 08:38:16 2156
Yuma 08:34:55 -36.5 Dark Up 74.6 291.7 Up 08:31:36 - 08:38:14 2094

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 2019/11/26 22:44:48 UT

Marc W. Buie, Southwest Research Institute

RECON