RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star GA1180:02118346 with event index number of 1301362

Geocentric closest approach at 2024/02/12 03:31:14 UTC

J2000 position of star is 06:03:27.6 +28:39:10
Equinox of date position of star is 06:04:41.6 +28:39:03
Stellar brightness G=13.5, use SENSEUP=32
Star is 97 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 19.1 AU from the Sun and 18.5 AU from the Earth.
The TNO is moving 14.7 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 306 seconds.
The 1-sigma cross-track error in the shadow position is 3622 km.
The sky-plane scale is 13386.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 5.1 sec chord
Diameter=31.0 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 248835, (2024/02/12 03:31UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.7 +07:24:34  0.4 21.34  94
Alnath         05:27:49.1 +28:37:33  1.6  8.15  89
PPM 095226     06:02:31.4 +27:34:17  6.0  1.21  97
PPM 095286     06:04:31.3 +28:40:30  7.9  0.11  97
248835         06:04:59.4 +28:39:01 13.5        97
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 2.9 sigma about the mid-time.
The median site spacing is 20.1 km RECON observability=1.0 and success probability=12.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 03:31:23 -23.4 Dark Up 65.6 144.8 Up 03:16:23 - 03:46:23 3005
Summerland 03:31:26 -23.2 Dark Up 65.8 143.9 Up 03:16:26 - 03:46:26 2990
Penticton 03:31:25 -23.3 Dark Up 65.9 144.1 Up 03:16:25 - 03:46:25 2980
Okanagan Falls 03:31:26 -23.3 Dark Up 66.0 143.8 Up 03:16:26 - 03:46:26 2965
Oliver 03:31:27 -23.3 Dark Up 66.2 143.6 Up 03:16:27 - 03:46:27 2950
Anarchist Mountain Observatory 03:31:27 -23.5 Dark Up 66.4 143.7 Up 03:16:27 - 03:46:27 2929
Oroville 03:31:27 -23.4 Dark Up 66.4 143.5 Up 03:16:27 - 03:46:27 2925
Tonasket 03:31:28 -23.5 Dark Up 66.6 143.2 Up 03:16:28 - 03:46:28 2905
Okanogan 03:31:31 -23.4 Dark Up 66.8 142.4 Up 03:16:31 - 03:46:31 2881
Brewster 03:31:32 -23.3 Dark Up 66.9 141.7 Up 03:16:32 - 03:46:32 2865
Manson/Chelan 03:31:35 -23.1 Dark Up 66.9 140.7 Up 03:16:35 - 03:46:35 2861
Entiat 03:31:36 -23.1 Dark Up 67.1 140.2 Up 03:16:36 - 03:46:36 2845
Wenatchee 03:31:38 -23.0 Dark Up 67.2 139.6 Up 03:16:38 - 03:46:38 2827
Ellensburg 03:31:40 -22.9 Dark Up 67.5 138.6 Up 03:16:40 - 03:46:40 2799
Yakima 03:31:42 -22.9 Dark Up 67.8 137.9 Up 03:16:42 - 03:46:42 2765
Toppenish/White Swan 03:31:43 -23.1 Dark Up 68.0 137.9 Up 03:16:43 - 03:46:43 2739
Goldendale 03:31:46 -22.8 Dark Up 68.2 136.1 Up 03:16:46 - 03:46:46 2708
The Dalles 03:31:48 -22.6 Dark Up 68.2 135.0 Up 03:16:48 - 03:46:48 2703
Pasco 03:31:37 -23.9 Dark Up 68.7 140.2 Up 03:16:37 - 03:46:37 2680
Maupin 03:31:50 -22.7 Dark Up 68.5 134.5 Up 03:16:50 - 03:46:50 2662
George/Umatilla 03:31:39 -23.8 Dark Up 68.8 139.2 Up 03:16:39 - 03:46:39 2659
PNWRO 03:31:37 -24.1 Dark Up 69.0 140.3 Up 03:16:37 - 03:46:37 2650
Madras/Culver 03:31:52 -22.7 Dark Up 68.9 133.4 Up 03:16:52 - 03:46:52 2616
Sisters 03:31:56 -22.4 Dark Up 68.9 131.9 Up 03:16:56 - 03:46:56 2605
Redmond 03:31:54 -22.7 Dark Up 69.1 132.7 Up 03:16:54 - 03:46:54 2586
Bend 03:31:56 -22.6 Dark Up 69.2 132.0 Up 03:16:56 - 03:46:56 2573
Oregon Observatory 03:31:57 -22.5 Dark Up 69.3 131.4 Up 03:16:57 - 03:46:57 2563
La Pine/Gilchrist 03:31:59 -22.5 Dark Up 69.4 130.9 Up 03:16:59 - 03:46:59 2548
North Lake 03:31:57 -22.9 Dark Up 70.0 131.2 Up 03:16:57 - 03:46:57 2485
Chiloquin 03:32:06 -22.3 Dark Up 69.9 127.9 Up 03:17:06 - 03:47:06 2464
Klamath Falls 03:32:06 -22.3 Dark Up 70.1 127.3 Up 03:17:06 - 03:47:06 2430
Paisley 03:31:58 -23.2 Dark Up 70.5 130.7 Up 03:16:58 - 03:46:58 2421
Tulelake 03:32:05 -22.5 Dark Up 70.5 127.3 Up 03:17:05 - 03:47:05 2393
Lakeview 03:31:59 -23.4 Dark Up 71.0 130.0 Up 03:16:59 - 03:46:59 2367
Fall River/Burney 03:32:09 -22.6 Dark Up 71.1 125.4 Up 03:17:09 - 03:47:09 2309
Cedarville 03:32:01 -23.5 Dark Up 71.5 128.9 Up 03:17:01 - 03:47:01 2301
Susanville 03:32:08 -23.2 Dark Up 71.9 125.3 Up 03:17:08 - 03:47:08 2220
Greenville 03:32:11 -23.0 Dark Up 71.9 124.1 Up 03:17:11 - 03:47:11 2208
Gimple 03:32:10 -23.1 Dark Up 71.9 124.2 Up 03:17:10 - 03:47:10 2204
Quincy 03:32:11 -23.0 Dark Up 72.0 123.6 Up 03:17:11 - 03:47:11 2189
Portola 03:32:09 -23.4 Dark Up 72.4 124.2 Up 03:17:09 - 03:47:09 2157
Reno 03:32:07 -23.9 Dark Up 72.9 124.8 Up 03:17:07 - 03:47:07 2105
Carson City 03:32:09 -23.9 Dark Up 73.1 123.8 Up 03:17:09 - 03:47:09 2071
Gardnerville 03:32:09 -23.9 Dark Up 73.3 123.3 Up 03:17:09 - 03:47:09 2047
Yerington 03:32:07 -24.4 Dark Up 73.7 124.6 Up 03:17:07 - 03:47:07 2026
Hawthorne 03:32:06 -24.8 Dark Up 74.3 124.4 Up 03:17:06 - 03:47:06 1961
Lee Vining 03:32:11 -24.5 Dark Up 74.3 121.7 Up 03:17:11 - 03:47:11 1929
Tonopah 03:32:00 -25.9 Dark Up 75.4 126.2 Up 03:17:00 - 03:47:00 1857
Bishop 03:32:09 -25.0 Dark Up 75.1 121.4 Up 03:17:09 - 03:47:09 1842
Lone Pine 03:32:10 -25.3 Dark Up 75.7 119.6 Up 03:17:10 - 03:47:10 1757
CPSLO 03:32:23 -23.3 Dark Up 74.4 110.5 Up 03:17:23 - 03:47:23 1752
Beatty 03:32:02 -26.3 Dark Up 76.4 123.6 Up 03:17:02 - 03:47:02 1729
Indian Springs 03:31:58 -27.2 Dark Up 77.3 125.1 Up 03:16:58 - 03:46:58 1652
Niwot 03:30:52 -34.7 Dark Down 78.5 172.9 Up 03:15:52 - 03:45:52 1593
SwRI 03:30:53 -34.7 Dark Down 78.6 172.4 Up 03:15:53 - 03:45:53 1586
Henderson 03:31:57 -27.8 Dark Up 78.0 125.0 Up 03:16:57 - 03:46:57 1572
Wildwood 03:32:23 -25.0 Dark Up 76.4 109.5 Up 03:17:23 - 03:47:23 1544
Searchlight/Boulder City 03:31:58 -27.9 Dark Up 78.4 122.9 Up 03:16:58 - 03:46:58 1514
Laughlin/Bullhead City 03:31:58 -28.2 Dark Up 78.8 122.6 Up 03:16:58 - 03:46:58 1471
Patrick 03:31:53 -28.7 Dark Up 79.1 125.6 Up 03:16:53 - 03:46:53 1464
Kingman/Dolan Springs 03:31:55 -28.6 Dark Up 79.1 124.1 Up 03:16:55 - 03:46:55 1451
Mohave Valley 03:31:59 -28.2 Dark Up 78.9 121.4 Up 03:16:59 - 03:46:59 1444
Idyllwild 03:32:14 -26.5 Dark Up 77.9 111.4 Up 03:17:14 - 03:47:14 1425
DCO 03:31:50 -29.3 Dark Up 79.8 126.5 Up 03:16:50 - 03:46:50 1405
Lake Havasu City 03:31:59 -28.4 Dark Up 79.3 120.3 Up 03:16:59 - 03:46:59 1395
Parker 03:31:59 -28.4 Dark Up 79.5 118.8 Up 03:16:59 - 03:46:59 1359
Blythe 03:32:03 -28.2 Dark Up 79.6 115.5 Up 03:17:03 - 03:47:03 1321
Calipatria 03:32:10 -27.5 Dark Up 79.1 111.0 Up 03:17:10 - 03:47:10 1314
Yuma 03:32:07 -28.2 Dark Up 79.9 110.7 Up 03:17:07 - 03:47:07 1233

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 248835, (2024/02/12 03:31UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 21.34  94
Alnath         05:26:17.5 +28:36:23  1.6  8.15  89
PPM 095226     06:01:00.4 +27:34:21  6.0  1.21  97
PPM 095286     06:02:59.5 +28:40:37  7.9  0.11  97
248835         06:03:27.6 +28:39:10 13.5        97
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:33:15 UT

Marc W. Buie, Southwest Research Institute

RECON