RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star GA1180:02315407 with event index number of 1301319

Geocentric closest approach at 2023/12/03 06:27:56 UTC

J2000 position of star is 06:16:30.4 +29:11:05
Equinox of date position of star is 06:17:44.6 +29:10:36
Stellar brightness G=15.8, use SENSEUP=128
Star is 46 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 18.9 AU from the Sun and 18.0 AU from the Earth.
The TNO is moving 22.8 km/sec on the sky relative to the star, or, 6.3 arcsec/hr.
The 1-sigma error in the time of the event is 210 seconds.
The 1-sigma cross-track error in the shadow position is 3737 km.
The sky-plane scale is 13086.0 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 3.3 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 248835, (2023/12/03 06:28UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:46.8 +27:57:59  1.1 19.49  26
Alnath         05:27:48.4 +28:37:32  1.6 11.00  57
44Kap Aur      06:16:54.2 +29:29:14  4.3  0.40  46
PPM 095721     06:19:17.1 +29:12:32  7.7  0.28  45
248835         06:18:01.7 +29:10:29 15.8        45
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 4.3 sigma about the mid-time.
The median site spacing is 19.5 km RECON observability=1.0 and success probability=13.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:29:52 -58.3 Dark Up 50.9 105.1 Up 06:14:52 - 06:44:52 1984
Summerland 06:29:53 -58.4 Dark Up 50.8 104.5 Up 06:14:53 - 06:44:53 1966
Penticton 06:29:54 -58.5 Dark Up 50.9 104.5 Up 06:14:54 - 06:44:54 1957
Okanagan Falls 06:29:54 -58.7 Dark Up 50.9 104.3 Up 06:14:54 - 06:44:54 1941
Oliver 06:29:54 -58.8 Dark Up 51.0 104.1 Up 06:14:54 - 06:44:54 1927
Anarchist Mountain Observatory 06:29:55 -59.0 Dark Up 51.1 104.1 Up 06:14:55 - 06:44:55 1906
Oroville 06:29:55 -59.1 Dark Up 51.1 103.9 Up 06:14:55 - 06:44:55 1901
Tonasket 06:29:55 -59.2 Dark Up 51.2 103.7 Up 06:14:55 - 06:44:55 1881
Okanogan 06:29:57 -59.5 Dark Up 51.2 103.1 Up 06:14:57 - 06:44:57 1856
Brewster 06:29:58 -59.6 Dark Up 51.1 102.6 Up 06:14:58 - 06:44:58 1838
Manson/Chelan 06:29:59 -59.6 Dark Up 50.9 102.0 Up 06:14:59 - 06:44:59 1830
Entiat 06:30:00 -59.7 Dark Up 50.9 101.7 Up 06:15:00 - 06:45:00 1813
Wenatchee 06:30:01 -59.9 Dark Up 50.9 101.3 Up 06:15:01 - 06:45:01 1794
Ellensburg 06:30:03 -60.1 Dark Up 50.8 100.6 Up 06:15:03 - 06:45:03 1764
Yakima 06:30:04 -60.4 Dark Up 50.9 100.1 Up 06:15:04 - 06:45:04 1728
Toppenish/White Swan 06:30:04 -60.7 Dark Up 51.0 100.0 Up 06:15:04 - 06:45:04 1703
Goldendale 06:30:07 -60.9 Dark Up 50.9 99.0 Up 06:15:07 - 06:45:07 1667
The Dalles 06:30:08 -60.9 Dark Up 50.6 98.4 Up 06:15:08 - 06:45:08 1659
Pasco 06:30:02 -61.3 Dark Up 51.9 101.0 Up 06:15:02 - 06:45:02 1653
George/Umatilla 06:30:03 -61.5 Dark Up 51.8 100.3 Up 06:15:03 - 06:45:03 1630
PNWRO 06:30:02 -61.6 Dark Up 52.1 100.9 Up 06:15:02 - 06:45:02 1624
Maupin 06:30:09 -61.2 Dark Up 50.8 98.0 Up 06:15:09 - 06:45:09 1618
Madras/Culver 06:30:11 -61.6 Dark Up 50.8 97.3 Up 06:15:11 - 06:45:11 1570
Sisters 06:30:13 -61.6 Dark Up 50.5 96.5 Up 06:15:13 - 06:45:13 1554
Redmond 06:30:12 -61.8 Dark Up 50.8 96.8 Up 06:15:12 - 06:45:12 1539
Bend 06:30:13 -61.9 Dark Up 50.8 96.4 Up 06:15:13 - 06:45:13 1524
Oregon Observatory 06:30:14 -62.0 Dark Up 50.7 96.1 Up 06:15:14 - 06:45:14 1513
La Pine/Gilchrist 06:30:14 -62.1 Dark Up 50.7 95.8 Up 06:15:14 - 06:45:14 1496
North Lake 06:30:14 -62.7 Dark Up 51.1 95.8 Up 06:15:14 - 06:45:14 1436
Chiloquin 06:30:18 -62.7 Dark Up 50.5 94.2 Up 06:15:18 - 06:45:18 1406
Paisley 06:30:15 -63.3 Dark Up 51.5 95.4 Up 06:15:15 - 06:45:15 1374
Klamath Falls 06:30:19 -62.9 Dark Up 50.6 93.9 Up 06:15:19 - 06:45:19 1372
Tulelake 06:30:19 -63.3 Dark Up 50.8 93.8 Up 06:15:19 - 06:45:19 1337
Lakeview 06:30:16 -63.7 Dark Up 51.7 94.9 Up 06:15:16 - 06:45:16 1321
Cedarville 06:30:17 -64.3 Dark Up 51.8 94.2 Up 06:15:17 - 06:45:17 1254
Fall River/Burney 06:30:21 -63.9 Dark Up 51.0 92.7 Up 06:15:21 - 06:45:21 1250
Susanville 06:30:21 -64.8 Dark Up 51.6 92.4 Up 06:15:21 - 06:45:21 1166
Greenville 06:30:22 -64.8 Dark Up 51.3 91.9 Up 06:15:22 - 06:45:22 1150
Gimple 06:30:22 -64.8 Dark Up 51.4 92.0 Up 06:15:22 - 06:45:22 1147
Quincy 06:30:23 -64.9 Dark Up 51.4 91.6 Up 06:15:23 - 06:45:23 1131
Portola 06:30:22 -65.3 Dark Up 51.7 91.8 Up 06:15:22 - 06:45:22 1102
Reno 06:30:21 -65.8 Dark Up 52.2 91.9 Up 06:15:21 - 06:45:21 1055
Carson City 06:30:22 -66.1 Dark Up 52.3 91.5 Up 06:15:22 - 06:45:22 1020
Gardnerville 06:30:23 -66.3 Dark Up 52.3 91.2 Up 06:15:23 - 06:45:23 995
Yerington 06:30:21 -66.6 Dark Up 52.8 91.6 Up 06:15:21 - 06:45:21 980
Hawthorne 06:30:21 -67.2 Dark Up 53.2 91.3 Up 06:15:21 - 06:45:21 917
Lee Vining 06:30:23 -67.3 Dark Up 52.8 90.3 Up 06:15:23 - 06:45:23 880
Tonopah 06:30:18 -68.3 Dark Up 54.3 91.6 Up 06:15:18 - 06:45:18 823
Bishop 06:30:23 -68.1 Dark Up 53.4 89.9 Up 06:15:23 - 06:45:23 797
Lone Pine 06:30:24 -68.8 Dark Up 53.6 89.1 Up 06:15:24 - 06:45:24 711
Beatty 06:30:19 -69.4 Dark Up 54.7 90.3 Up 06:15:19 - 06:45:19 695
CPSLO 06:30:34 -67.8 Dark Up 51.5 86.0 Up 06:15:34 - 06:45:34 679
Niwot 06:29:38 -71.4 Dark Up 63.1 104.6 Up 06:14:38 - 06:44:38 657
SwRI 06:29:39 -71.5 Dark Up 63.1 104.3 Up 06:14:39 - 06:44:39 650
Indian Springs 06:30:17 -70.2 Dark Up 55.5 90.5 Up 06:15:17 - 06:45:17 626
Henderson 06:30:16 -71.0 Dark Up 56.1 90.1 Up 06:15:16 - 06:45:16 550
Searchlight/Boulder City 06:30:17 -71.4 Dark Up 56.2 89.3 Up 06:15:17 - 06:45:17 491
Wildwood 06:30:31 -69.9 Dark Up 53.1 85.5 Up 06:15:31 - 06:45:31 485
Patrick 06:30:14 -72.1 Dark Up 57.0 89.8 Up 06:15:14 - 06:45:14 450
Laughlin/Bullhead City 06:30:17 -71.8 Dark Up 56.4 89.0 Up 06:15:17 - 06:45:17 450
Kingman/Dolan Springs 06:30:15 -72.1 Dark Up 56.8 89.3 Up 06:15:15 - 06:45:15 434
Mohave Valley 06:30:18 -72.0 Dark Up 56.4 88.6 Up 06:15:18 - 06:45:18 422
DCO 06:30:13 -72.7 Dark Up 57.6 89.7 Up 06:15:13 - 06:45:13 396
Idyllwild 06:30:26 -71.4 Dark Up 54.6 85.9 Up 06:15:26 - 06:45:26 381
Lake Havasu City 06:30:18 -72.4 Dark Up 56.6 88.1 Up 06:15:18 - 06:45:18 374
Parker 06:30:18 -72.7 Dark Up 56.6 87.6 Up 06:15:18 - 06:45:18 338
Blythe 06:30:20 -72.8 Dark Up 56.4 86.7 Up 06:15:20 - 06:45:20 295
Calipatria 06:30:24 -72.5 Dark Up 55.6 85.5 Up 06:15:24 - 06:45:24 279
Yuma 06:30:22 -73.4 Dark Up 56.3 85.3 Up 06:15:22 - 06:45:22 204

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, (2023/12/03 06:28UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 19.49  26
Alnath         05:26:17.5 +28:36:23  1.6 11.00  57
44Kap Aur      06:15:22.6 +29:29:48  4.3  0.40  46
PPM 095721     06:17:45.7 +29:13:11  7.7  0.28  45
248835         06:16:30.4 +29:11:05 15.8        46
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:13:27 UT

Marc W. Buie, Southwest Research Institute

RECON