RECON: TNO occultation with 05VA123

Event between 05VA123 and star GA1140:01955492 with event index number of 1194065

Geocentric closest approach at 2023/01/20 02:33:43 UTC

J2000 position of star is 06:10:59.8 +24:39:39
Equinox of date position of star is 06:12:10.7 +24:39:19
Stellar brightness G=12.6, use SENSEUP=16
Star is 177 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 38.0 AU from the Sun and 37.1 AU from the Earth.
The TNO is moving 22.3 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 1891 seconds.
The 1-sigma cross-track error in the shadow position is 3664 km.
The sky-plane scale is 26939.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 10.1 sec chord
Diameter=91.8 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05VA123, (2023/01/20 02:34UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.2 +07:24:34  0.4 17.66 159
Alhena         06:39:02.6 +16:22:40  1.9 10.36 168
3 Gem          06:11:08.0 +23:06:27  5.5  1.57 175
5 Gem          06:12:57.2 +24:24:47  6.7  0.27 176
PPM 095546     06:11:52.5 +24:31:56  9.4  0.17 176
05VA123        06:12:24.8 +24:39:15 12.6       177
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 0.5 sigma about the mid-time.
The median site spacing is 19.3 km RECON observability=1.0 and success probability=6.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 02:36:15 -19.7 Dark Down 41.6 100.9 Up 02:21:15 - 02:51:15 6982
Summerland 02:36:17 -19.5 Dark Down 41.5 100.4 Up 02:21:17 - 02:51:17 6963
Penticton 02:36:18 -19.6 Dark Down 41.6 100.4 Up 02:21:18 - 02:51:18 6954
Okanagan Falls 02:36:18 -19.5 Dark Down 41.6 100.3 Up 02:21:18 - 02:51:18 6938
Oliver 02:36:18 -19.5 Dark Down 41.7 100.1 Up 02:21:18 - 02:51:18 6923
Anarchist Mountain Observatory 02:36:18 -19.6 Dark Down 41.8 100.2 Up 02:21:18 - 02:51:18 6904
Oroville 02:36:18 -19.6 Dark Down 41.8 100.0 Up 02:21:18 - 02:51:18 6899
Tonasket 02:36:19 -19.5 Dark Down 41.8 99.8 Up 02:21:19 - 02:51:19 6878
Okanogan 02:36:21 -19.4 Dark Down 41.8 99.4 Up 02:21:21 - 02:51:21 6852
Brewster 02:36:22 -19.2 Dark Down 41.7 99.0 Up 02:21:22 - 02:51:22 6833
Manson/Chelan 02:36:23 -18.9 Dark Down 41.5 98.5 Up 02:21:23 - 02:51:23 6824
Entiat 02:36:24 -18.9 Dark Down 41.5 98.3 Up 02:21:24 - 02:51:24 6806
Wenatchee 02:36:25 -18.8 Dark Down 41.5 98.0 Up 02:21:25 - 02:51:25 6786
Ellensburg 02:36:27 -18.5 Dark Down 41.4 97.4 Up 02:21:27 - 02:51:27 6755
Yakima 02:36:28 -18.5 Dark Down 41.4 97.1 Up 02:21:28 - 02:51:28 6719
Toppenish/White Swan 02:36:28 -18.5 Dark Down 41.6 97.0 Up 02:21:28 - 02:51:28 6695
Goldendale 02:36:30 -18.2 Dark Down 41.3 96.2 Up 02:21:30 - 02:51:30 6656
Pasco 02:36:26 -19.4 Dark Down 42.4 97.9 Up 02:21:26 - 02:51:26 6652
The Dalles 02:36:32 -17.9 AT Down 41.1 95.7 Up 02:21:32 - 02:51:32 6645
George/Umatilla 02:36:28 -19.2 Dark Down 42.3 97.4 Up 02:21:28 - 02:51:28 6627
PNWRO 02:36:26 -19.5 Dark Down 42.6 97.9 Up 02:21:26 - 02:51:26 6623
Maupin 02:36:33 -17.9 AT Down 41.2 95.4 Up 02:21:33 - 02:51:33 6605
Madras/Culver 02:36:35 -17.7 AT Down 41.3 94.9 Up 02:21:35 - 02:51:35 6556
Sisters 02:36:36 -17.4 AT Down 41.0 94.3 Up 02:21:36 - 02:51:36 6538
Redmond 02:36:36 -17.6 AT Down 41.3 94.6 Up 02:21:36 - 02:51:36 6525
Bend 02:36:37 -17.5 AT Down 41.2 94.3 Up 02:21:37 - 02:51:37 6509
Oregon Observatory 02:36:38 -17.4 AT Down 41.1 94.1 Up 02:21:38 - 02:51:38 6497
La Pine/Gilchrist 02:36:38 -17.3 AT Down 41.1 93.8 Up 02:21:38 - 02:51:38 6479
North Lake 02:36:38 -17.6 AT Down 41.5 93.9 Up 02:21:38 - 02:51:38 6423
Chiloquin 02:36:42 -16.8 AT Down 40.9 92.6 Up 02:21:42 - 02:51:42 6387
Paisley 02:36:39 -17.8 AT Down 41.8 93.7 Up 02:21:39 - 02:51:39 6362
Klamath Falls 02:36:43 -16.8 AT Down 41.0 92.4 Up 02:21:43 - 02:51:43 6353
Tulelake 02:36:43 -17.0 AT Down 41.2 92.4 Up 02:21:43 - 02:51:43 6319
Lakeview 02:36:40 -17.8 AT Down 42.0 93.3 Up 02:21:40 - 02:51:40 6309
Cedarville 02:36:41 -17.8 AT Down 42.2 92.9 Up 02:21:41 - 02:51:41 6243
Fall River/Burney 02:36:46 -16.8 AT Down 41.3 91.6 Up 02:21:46 - 02:51:46 6231
Susanville 02:36:46 -17.3 AT Down 41.9 91.6 Up 02:21:46 - 02:51:46 6151
Greenville 02:36:46 -17.0 AT Down 41.7 91.1 Up 02:21:46 - 02:51:46 6133
Gimple 02:36:47 -17.0 AT Down 41.7 91.2 Up 02:21:47 - 02:51:47 6130
Quincy 02:36:47 -16.9 AT Down 41.7 91.0 Up 02:21:47 - 02:51:47 6114
Portola 02:36:46 -17.3 AT Down 42.0 91.1 Up 02:21:46 - 02:51:46 6088
Reno 02:36:45 -17.7 AT Down 42.5 91.3 Up 02:21:45 - 02:51:45 6044
Carson City 02:36:46 -17.6 AT Down 42.6 91.0 Up 02:21:46 - 02:51:46 6009
Gardnerville 02:36:47 -17.6 AT Down 42.6 90.8 Up 02:21:47 - 02:51:47 5984
Yerington 02:36:45 -18.1 Dark Down 43.1 91.2 Up 02:21:45 - 02:51:45 5972
Hawthorne 02:36:45 -18.4 Dark Down 43.5 91.1 Up 02:21:45 - 02:51:45 5912
Lee Vining 02:36:47 -17.9 AT Down 43.1 90.3 Up 02:21:47 - 02:51:47 5871
Tonopah 02:36:43 -19.4 Dark Down 44.6 91.6 Up 02:21:43 - 02:51:43 5827
Bishop 02:36:47 -18.3 Dark Down 43.7 90.2 Up 02:21:47 - 02:51:47 5792
Niwot 02:36:06 -28.8 Dark Down 53.5 102.8 Up 02:21:06 - 02:51:06 5730
SwRI 02:36:07 -28.7 Dark Down 53.5 102.6 Up 02:21:07 - 02:51:07 5722
Lone Pine 02:36:49 -18.5 Dark Down 44.0 89.7 Up 02:21:49 - 02:51:49 5708
Beatty 02:36:45 -19.5 Dark Down 45.0 90.7 Up 02:21:45 - 02:51:45 5700
CPSLO 02:36:58 -16.1 AT Down 41.8 87.0 Up 02:21:58 - 02:51:58 5657
Indian Springs 02:36:43 -20.3 Dark Down 45.9 91.1 Up 02:21:43 - 02:51:43 5637
Henderson 02:36:42 -20.8 Dark Down 46.4 90.9 Up 02:21:42 - 02:51:42 5565
Searchlight/Boulder City 02:36:43 -20.7 Dark Down 46.5 90.4 Up 02:21:43 - 02:51:43 5506
Wildwood 02:36:55 -17.5 AT Down 43.5 87.0 Up 02:21:55 - 02:51:55 5475
Patrick 02:36:40 -21.5 Dark Down 47.3 90.9 Up 02:21:40 - 02:51:40 5471
Laughlin/Bullhead City 02:36:43 -20.9 Dark Down 46.8 90.2 Up 02:21:43 - 02:51:43 5466
Kingman/Dolan Springs 02:36:41 -21.3 Dark Down 47.2 90.6 Up 02:21:41 - 02:51:41 5454
Mohave Valley 02:36:43 -20.9 Dark Down 46.8 90.0 Up 02:21:43 - 02:51:43 5438
DCO 02:36:39 -22.0 Dark Down 47.9 91.0 Up 02:21:39 - 02:51:39 5421
Lake Havasu City 02:36:43 -21.0 Dark Down 47.0 89.7 Up 02:21:43 - 02:51:43 5391
Idyllwild 02:36:51 -18.9 Dark Down 45.0 87.6 Up 02:21:51 - 02:51:51 5383
Parker 02:36:44 -21.0 Dark Down 47.0 89.3 Up 02:21:44 - 02:51:44 5355
Blythe 02:36:46 -20.6 Dark Down 46.7 88.6 Up 02:21:46 - 02:51:46 5310
Calipatria 02:36:49 -19.8 Dark Down 46.0 87.6 Up 02:21:49 - 02:51:49 5287
Yuma 02:36:48 -20.4 Dark Down 46.7 87.6 Up 02:21:48 - 02:51:48 5217

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 05VA123, (2023/01/20 02:34UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.66 159
Alhena         06:37:42.8 +16:23:57  1.9 10.36 168
3 Gem          06:09:44.0 +23:06:48  5.5  1.57 175
5 Gem          06:11:32.3 +24:25:12  6.7  0.27 176
PPM 095546     06:10:27.6 +24:32:18  9.4  0.17 176
05VA123        06:10:59.8 +24:39:39 12.6       176
Positions are for J2000

Event circumstances last updated at 2019/03/19 02:32:25 UT

Marc W. Buie, Southwest Research Institute

RECON