RECON: TNO occultation with 12XW159

Event between 12XW159 and star GA0960:01413367 with event index number of 1559716

Geocentric closest approach at 2023/01/24 06:56:18 UTC

J2000 position of star is 06:15:40.0 +06:13:00
Equinox of date position of star is 06:16:42.9 +06:12:32
Stellar brightness G=14.5, use SENSEUP=128
Star is 113 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 32.1 AU from the Sun and 31.3 AU from the Earth.
The TNO is moving 21.6 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 381 seconds.
The 1-sigma cross-track error in the shadow position is 3153 km.
The sky-plane scale is 22697.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 9.5 sec chord
Diameter=83.4 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 12XW159, (2023/01/24 06:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.3 +07:24:34  0.4  5.22 108
Alhena         06:39:02.6 +16:22:40  1.9 11.52 120
PPM 150179     06:16:54.3 +06:03:25  5.8  0.15 113
PPM 150223     06:18:24.7 +06:04:22  8.5  0.40 113
PPM 150179     06:16:54.3 +06:03:25  5.8  0.15 113
12XW159        06:16:54.3 +06:12:27 14.5       113
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 2.4 sigma about the mid-time.
The median site spacing is 17.8 km RECON observability=1.0 and success probability=8.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:56:33 -56.1 Dark Down 44.7 200.0 Up 06:41:33 - 07:11:33 4380
Summerland 06:56:33 -56.2 Dark Down 45.1 199.8 Up 06:41:33 - 07:11:33 4353
Penticton 06:56:33 -56.3 Dark Down 45.1 199.9 Up 06:41:33 - 07:11:33 4351
Okanagan Falls 06:56:32 -56.5 Dark Down 45.3 200.0 Up 06:41:32 - 07:11:32 4337
Oliver 06:56:33 -56.6 Dark Down 45.4 200.1 Up 06:41:33 - 07:11:33 4325
Anarchist Mountain Observatory 06:56:32 -56.8 Dark Down 45.6 200.4 Up 06:41:32 - 07:11:32 4317
Oroville 06:56:31 -56.9 Dark Down 45.6 200.3 Up 06:41:31 - 07:11:31 4310
Tonasket 06:56:31 -57.1 Dark Down 45.9 200.4 Up 06:41:31 - 07:11:31 4293
Okanogan 06:56:31 -57.3 Dark Down 46.2 200.3 Up 06:41:31 - 07:11:31 4266
Brewster 06:56:31 -57.4 Dark Down 46.5 200.1 Up 06:41:31 - 07:11:31 4241
Manson/Chelan 06:56:31 -57.5 Dark Down 46.8 199.7 Up 06:41:31 - 07:11:31 4217
Wenatchee 06:56:32 -57.8 Dark Down 47.3 199.6 Up 06:41:32 - 07:11:32 4178
Ellensburg 06:56:32 -58.0 Dark Down 47.7 199.4 Up 06:41:32 - 07:11:32 4142
Pasco 06:56:25 -59.2 Dark Down 48.1 201.7 Up 06:41:25 - 07:11:25 4119
Yakima 06:56:30 -58.4 Dark Down 48.1 199.6 Up 06:41:30 - 07:11:30 4111
PNWRO 06:56:23 -59.5 Dark Down 48.2 202.2 Up 06:41:23 - 07:11:23 4106
Toppenish/White Swan 06:56:30 -58.6 Dark Down 48.3 199.9 Up 06:41:30 - 07:11:30 4099
George/Umatilla 06:56:25 -59.4 Dark Down 48.4 201.6 Up 06:41:25 - 07:11:25 4088
Goldendale 06:56:30 -58.9 Dark Down 48.9 199.5 Up 06:41:30 - 07:11:30 4046
The Dalles 06:56:30 -58.9 Dark Down 49.2 199.0 Up 06:41:30 - 07:11:30 4020
Maupin 06:56:29 -59.3 Dark Down 49.6 199.3 Up 06:41:29 - 07:11:29 3990
SwRI 06:55:24 -68.9 Dark Down 47.9 224.1 Up 06:40:24 - 07:10:24 3980
Madras/Culver 06:56:28 -59.7 Dark Down 50.1 199.5 Up 06:41:28 - 07:11:28 3947
Redmond 06:56:28 -59.9 Dark Down 50.4 199.5 Up 06:41:28 - 07:11:28 3917
Sisters 06:56:30 -59.7 Dark Down 50.5 198.9 Up 06:41:30 - 07:11:30 3909
Bend 06:56:28 -60.0 Dark Down 50.7 199.4 Up 06:41:28 - 07:11:28 3897
Oregon Observatory 06:56:29 -60.1 Dark Down 50.9 199.3 Up 06:41:29 - 07:11:29 3880
La Pine/Gilchrist 06:56:28 -60.2 Dark Down 51.1 199.3 Up 06:41:28 - 07:11:28 3862
North Lake 06:56:25 -60.8 Dark Down 51.3 200.4 Up 06:41:25 - 07:11:25 3842
Paisley 06:56:22 -61.4 Dark Down 51.8 201.1 Up 06:41:22 - 07:11:22 3806
Lakeview 06:56:21 -61.9 Dark Down 52.2 201.7 Up 06:41:21 - 07:11:21 3770
Chiloquin 06:56:27 -60.8 Dark Down 52.2 199.2 Up 06:41:27 - 07:11:27 3764
Klamath Falls 06:56:27 -61.1 Dark Down 52.5 199.4 Up 06:41:27 - 07:11:27 3738
Tulelake 06:56:25 -61.5 Dark Down 52.7 200.0 Up 06:41:25 - 07:11:25 3723
Cedarville 06:56:20 -62.4 Dark Down 52.7 202.3 Up 06:41:20 - 07:11:20 3721
Fall River/Burney 06:56:22 -62.2 Dark Down 53.5 200.6 Up 06:41:22 - 07:11:22 3650
Susanville 06:56:20 -63.0 Dark Down 53.9 202.1 Up 06:41:20 - 07:11:20 3617
Gimple 06:56:19 -63.1 Dark Down 54.2 201.9 Up 06:41:19 - 07:11:19 3588
Greenville 06:56:19 -63.0 Dark Down 54.3 201.7 Up 06:41:19 - 07:11:19 3586
Portola 06:56:17 -63.5 Dark Down 54.4 202.7 Up 06:41:17 - 07:11:17 3571
Quincy 06:56:19 -63.2 Dark Down 54.4 201.8 Up 06:41:19 - 07:11:19 3569
Reno 06:56:14 -64.1 Dark Down 54.5 203.8 Up 06:41:14 - 07:11:14 3565
Yerington 06:56:10 -64.8 Dark Down 54.8 205.2 Up 06:41:10 - 07:11:10 3536
Carson City 06:56:14 -64.3 Dark Down 54.8 204.1 Up 06:41:14 - 07:11:14 3536
Gardnerville 06:56:12 -64.5 Dark Down 55.0 204.3 Up 06:41:12 - 07:11:12 3516
Hawthorne 06:56:08 -65.4 Dark Down 55.0 206.3 Up 06:41:08 - 07:11:08 3511
Tonopah 06:56:02 -66.5 Dark Down 54.9 208.9 Up 06:41:02 - 07:11:02 3508
Lee Vining 06:56:08 -65.6 Dark Down 55.7 205.9 Up 06:41:08 - 07:11:08 3449
Indian Springs 06:55:53 -68.4 Dark Down 55.6 212.4 Up 06:40:53 - 07:10:53 3423
Beatty 06:55:58 -67.6 Dark Down 55.8 210.4 Up 06:40:58 - 07:10:58 3422
Bishop 06:56:04 -66.4 Dark Down 56.0 207.5 Up 06:41:04 - 07:11:04 3418
Henderson 06:55:50 -69.2 Dark Down 55.7 213.9 Up 06:40:50 - 07:10:50 3396
Patrick 06:55:44 -70.2 Dark Down 55.7 216.1 Up 06:40:44 - 07:10:44 3373
Lone Pine 06:56:03 -67.1 Dark Down 56.5 208.5 Up 06:41:03 - 07:11:03 3361
Searchlight/Boulder City 06:55:49 -69.6 Dark Down 56.2 214.5 Up 06:40:49 - 07:10:49 3348
Kingman/Dolan Springs 06:55:44 -70.3 Dark Down 56.0 216.0 Up 06:40:44 - 07:10:44 3348
Laughlin/Bullhead City 06:55:46 -70.1 Dark Down 56.3 215.2 Up 06:40:46 - 07:10:46 3332
Mohave Valley 06:55:45 -70.3 Dark Down 56.5 215.5 Up 06:40:45 - 07:10:45 3308
Lake Havasu City 06:55:43 -70.7 Dark Down 56.7 216.2 Up 06:40:43 - 07:10:43 3280
Parker 06:55:42 -71.0 Dark Down 57.0 216.6 Up 06:40:42 - 07:10:42 3250
Blythe 06:55:42 -71.2 Dark Down 57.5 216.6 Up 06:40:42 - 07:10:42 3195
CPSLO 06:56:09 -66.4 Dark Down 58.6 205.0 Up 06:41:09 - 07:11:09 3176
Idyllwild 06:55:51 -69.9 Dark Down 58.4 213.0 Up 06:40:51 - 07:10:51 3146
Wildwood 06:55:59 -68.5 Dark Down 58.9 209.5 Up 06:40:59 - 07:10:59 3125
Calipatria 06:55:45 -71.0 Dark Down 58.4 215.5 Up 06:40:45 - 07:10:45 3125
Yuma 06:55:41 -71.8 Dark Down 58.3 217.4 Up 06:40:41 - 07:10:41 3112

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 12XW159, (2023/01/24 06:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  5.22 108
Alhena         06:37:42.8 +16:23:57  1.9 11.52 120
PPM 150179     06:15:40.2 +06:03:58  5.8  0.15 113
PPM 150223     06:17:10.5 +06:04:58  8.5  0.40 113
PPM 150179     06:15:40.2 +06:03:58  5.8  0.15 113
12XW159        06:15:40.0 +06:13:00 14.5       113
Positions are for J2000

Event circumstances last updated at 2019/07/05 21:59:04 UT

Marc W. Buie, Southwest Research Institute

RECON