RECON: TNO occultation with 523763

Event between (523763) 14WZ509 and star GA0860:03769717 with event index number of 1248608

Geocentric closest approach at 2022/12/28 07:49:18 UTC

J2000 position of star is 09:39:03.3 -02:30:30
Equinox of date position of star is 09:40:02.4 -02:35:48
Stellar brightness G=13.3, use SENSEUP=32
Star is 154 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 43.9 AU from the Sun and 43.3 AU from the Earth.
The TNO is moving 16.0 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 461 seconds.
The 1-sigma cross-track error in the shadow position is 3567 km.
The sky-plane scale is 31388.3 km/arcsec.

The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 29.9 sec chord
Diameter=195.4 km assuming a 30% albedo -- 12.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523763, (2022/12/28 07:49UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:35.7 +11:51:14  1.3 16.20 165
Alphard        09:28:43.0 -08:45:34  2.0  6.78 148
35Iot Hya      09:41:01.8 -01:14:54  3.9  1.38 155
PPM 177929     09:39:37.9 -03:01:58  8.4  0.44 154
PPM 177934     09:40:31.7 -02:46:32  9.5  0.18 154
523763         09:40:13.2 -02:36:47 13.3       154
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 2.0 sigma about the mid-time.
The median site spacing is 15.5 km RECON observability=1.0 and success probability=6.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:52:08 -63.3 Dark Down 22.7 124.8 Low 07:37:08 - 08:07:08 5692
Summerland 07:52:10 -63.6 Dark Down 22.7 124.4 Low 07:37:10 - 08:07:10 5674
Penticton 07:52:10 -63.7 Dark Down 22.8 124.5 Low 07:37:10 - 08:07:10 5669
Okanagan Falls 07:52:11 -63.9 Dark Down 22.9 124.4 Low 07:37:11 - 08:07:11 5657
Oliver 07:52:11 -64.1 Dark Down 23.0 124.4 Low 07:37:11 - 08:07:11 5646
Anarchist Mountain Observatory 07:52:11 -64.2 Dark Down 23.2 124.5 Low 07:37:11 - 08:07:11 5635
Oroville 07:52:12 -64.3 Dark Down 23.2 124.4 Low 07:37:12 - 08:07:12 5630
Tonasket 07:52:13 -64.5 Dark Down 23.4 124.3 Low 07:37:13 - 08:07:13 5615
Okanogan 07:52:15 -64.9 Dark Down 23.5 124.1 Low 07:37:15 - 08:07:15 5593
Brewster 07:52:17 -65.1 Dark Down 23.5 123.8 Low 07:37:17 - 08:07:17 5576
Manson/Chelan 07:52:19 -65.3 Dark Down 23.4 123.4 Low 07:37:19 - 08:07:19 5562
Entiat 07:52:20 -65.5 Dark Down 23.5 123.3 Low 07:37:20 - 08:07:20 5548
Wenatchee 07:52:21 -65.8 Dark Down 23.6 123.1 Low 07:37:21 - 08:07:21 5531
Ellensburg 07:52:23 -66.2 Dark Down 23.7 122.7 Low 07:37:23 - 08:07:23 5503
Yakima 07:52:25 -66.6 Dark Down 23.9 122.6 Low 07:37:25 - 08:07:25 5475
Toppenish/White Swan 07:52:26 -66.8 Dark Down 24.1 122.6 Low 07:37:26 - 08:07:26 5460
Pasco 07:52:22 -67.0 Dark Down 24.9 123.7 Low 07:37:22 - 08:07:22 5450
PNWRO 07:52:22 -67.3 Dark Down 25.2 123.8 Low 07:37:22 - 08:07:22 5433
George/Umatilla 07:52:24 -67.3 Dark Down 25.0 123.4 Low 07:37:24 - 08:07:24 5427
Goldendale 07:52:29 -67.3 Dark Down 24.2 122.1 Low 07:37:29 - 08:07:29 5423
The Dalles 07:52:31 -67.5 Dark Down 24.1 121.7 Low 07:37:31 - 08:07:31 5407
Maupin 07:52:33 -67.9 Dark Down 24.4 121.6 Low 07:37:33 - 08:07:33 5378
Madras/Culver 07:52:35 -68.5 Dark Down 24.6 121.4 Low 07:37:35 - 08:07:35 5339
Sisters 07:52:38 -68.8 Dark Down 24.5 120.9 Low 07:37:38 - 08:07:38 5316
Redmond 07:52:37 -68.8 Dark Down 24.8 121.2 Low 07:37:37 - 08:07:37 5313
Bend 07:52:38 -69.0 Dark Down 24.8 121.0 Low 07:37:38 - 08:07:38 5298
Oregon Observatory 07:52:39 -69.2 Dark Down 24.8 120.8 Low 07:37:39 - 08:07:39 5286
La Pine/Gilchrist 07:52:40 -69.4 Dark Down 24.9 120.7 Low 07:37:40 - 08:07:40 5271
North Lake 07:52:40 -69.9 Dark Down 25.5 121.0 Low 07:37:40 - 08:07:40 5238
Paisley 07:52:41 -70.5 Dark Down 26.0 121.1 Low 07:37:41 - 08:07:41 5197
Chiloquin 07:52:46 -70.4 Dark Down 25.3 119.9 Low 07:37:46 - 08:07:46 5189
Klamath Falls 07:52:47 -70.8 Dark Down 25.5 119.9 Low 07:37:47 - 08:07:47 5164
Lakeview 07:52:42 -71.0 Dark Down 26.4 121.1 Low 07:37:42 - 08:07:42 5159
Tulelake 07:52:47 -71.1 Dark Down 25.8 120.0 Low 07:37:47 - 08:07:47 5143
Cedarville 07:52:45 -71.6 Dark Down 26.9 120.9 Low 07:37:45 - 08:07:45 5109
Fall River/Burney 07:52:50 -72.0 Dark Down 26.3 119.7 Low 07:37:50 - 08:07:50 5074
Susanville 07:52:51 -72.7 Dark Down 27.1 120.1 Low 07:37:51 - 08:07:51 5024
Greenville 07:52:53 -72.9 Dark Down 27.1 119.7 Low 07:37:53 - 08:07:53 5003
Gimple 07:52:52 -73.0 Dark Down 27.1 119.8 Low 07:37:52 - 08:07:52 5003
Quincy 07:52:53 -73.1 Dark Down 27.2 119.6 Low 07:37:53 - 08:07:53 4988
Portola 07:52:52 -73.3 Dark Down 27.6 120.0 Low 07:37:52 - 08:07:52 4977
Niwot 07:51:53 -70.2 Dark Down 36.6 134.2 Up 07:36:53 - 08:06:53 4962
Reno 07:52:51 -73.6 Dark Down 28.1 120.4 Low 07:37:51 - 08:07:51 4955
SwRI 07:51:54 -70.3 Dark Down 36.6 134.0 Up 07:36:54 - 08:06:54 4954
Carson City 07:52:52 -74.0 Dark Down 28.3 120.2 Low 07:37:52 - 08:07:52 4927
Yerington 07:52:51 -74.2 Dark Down 28.8 120.7 Low 07:37:51 - 08:07:51 4910
Gardnerville 07:52:53 -74.3 Dark Down 28.5 120.2 Low 07:37:53 - 08:07:53 4907
Hawthorne 07:52:51 -74.7 Dark Down 29.4 120.9 Low 07:37:51 - 08:07:51 4872
Tonopah 07:52:47 -75.2 Dark Down 30.6 121.9 Up 07:37:47 - 08:07:47 4832
Lee Vining 07:52:54 -75.3 Dark Down 29.4 120.2 Low 07:37:54 - 08:07:54 4828
Bishop 07:52:54 -75.9 Dark Down 30.2 120.5 Up 07:37:54 - 08:07:54 4778
Beatty 07:52:49 -76.3 Dark Down 31.5 121.7 Up 07:37:49 - 08:07:49 4737
Lone Pine 07:52:55 -76.7 Dark Down 30.8 120.4 Up 07:37:55 - 08:07:55 4715
Indian Springs 07:52:46 -76.6 Dark Down 32.4 122.4 Up 07:37:46 - 08:07:46 4707
Henderson 07:52:45 -77.0 Dark Down 33.2 122.7 Up 07:37:45 - 08:07:45 4661
Searchlight/Boulder City 07:52:47 -77.5 Dark Down 33.6 122.5 Up 07:37:47 - 08:07:47 4613
CPSLO 07:53:09 -77.7 Dark Down 29.7 117.7 Low 07:38:09 - 08:08:09 4611
Patrick 07:52:43 -77.4 Dark Down 34.3 123.4 Up 07:37:43 - 08:07:43 4606
Kingman/Dolan Springs 07:52:45 -77.6 Dark Down 34.3 123.1 Up 07:37:45 - 08:07:45 4588
Laughlin/Bullhead City 07:52:47 -77.8 Dark Down 34.0 122.6 Up 07:37:47 - 08:07:47 4587
DCO 07:52:41 -77.5 Dark Down 34.9 123.8 Up 07:37:41 - 08:07:41 4578
Mohave Valley 07:52:48 -78.0 Dark Down 34.1 122.5 Up 07:37:48 - 08:07:48 4564
Lake Havasu City 07:52:48 -78.4 Dark Down 34.5 122.5 Up 07:37:48 - 08:07:48 4529
Wildwood 07:53:06 -79.2 Dark Down 31.7 118.7 Up 07:38:06 - 08:08:06 4505
Parker 07:52:50 -78.7 Dark Down 34.7 122.3 Up 07:37:50 - 08:07:50 4499
Idyllwild 07:53:00 -79.5 Dark Down 33.2 120.0 Up 07:38:00 - 08:08:00 4470
Blythe 07:52:52 -79.3 Dark Down 34.8 121.7 Up 07:37:52 - 08:07:52 4455
Calipatria 07:52:57 -79.9 Dark Down 34.4 120.7 Up 07:37:57 - 08:07:57 4414
Yuma 07:52:55 -80.2 Dark Down 35.3 121.2 Up 07:37:55 - 08:07:55 4374

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 523763, (2022/12/28 07:49UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 16.20 165
Alphard        09:27:35.2 -08:39:31  2.0  6.78 148
35Iot Hya      09:39:51.4 -01:08:36  3.9  1.38 155
PPM 177929     09:38:28.1 -02:55:42  8.4  0.44 154
PPM 177934     09:39:21.8 -02:40:14  9.5  0.18 154
523763         09:39:03.3 -02:30:30 13.3       154
Positions are for J2000

Event circumstances last updated at 2019/06/08 04:32:56 UT

Marc W. Buie, Southwest Research Institute

RECON