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 07:52:49 UTC

J2000 position of star is 09:39:03.3 -02:30:30
Equinox of date position of star is 09:40:07.3 -02:36:15
Stellar brightness G=13.3, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=22.1

[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 333 seconds.
The 1-sigma cross-track error in the shadow position is 2747 km.
The sky-plane scale is 31388.2 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=465.6 km assuming a 5% albedo -- 29.1 sec chord
Diameter=190.1 km assuming a 30% albedo -- 11.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523763, (2022/12/28 07:53UT)
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 2.7 sigma about the mid-time.
The median site spacing is 17.6 km RECON observability=1.0 and success probability=6.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 07:55:34 -63.0 Dark Down 23.0 125.7 Low 07:40:34 - 08:10:34 5577
Kelowna 07:55:36 -63.4 Dark Down 23.1 125.5 Low 07:40:36 - 08:10:36 5553
Peachland 07:55:38 -63.5 Dark Down 23.0 125.2 Low 07:40:38 - 08:10:38 5546
Summerland 07:55:38 -63.7 Dark Down 23.2 125.2 Low 07:40:38 - 08:10:38 5537
Penticton 07:55:38 -63.7 Dark Down 23.3 125.3 Low 07:40:38 - 08:10:38 5532
Oliver 07:55:39 -64.1 Dark Down 23.5 125.2 Low 07:40:39 - 08:10:39 5510
Anarchist Mountain Observatory 07:55:39 -64.3 Dark Down 23.7 125.3 Low 07:40:39 - 08:10:39 5499
Tonasket 07:55:41 -64.6 Dark Down 23.8 125.1 Low 07:40:41 - 08:10:41 5478
Victoria 07:55:52 -64.5 Dark Down 21.8 121.5 Low 07:40:52 - 08:10:52 5471
Okanogan 07:55:42 -64.9 Dark Down 23.9 124.9 Low 07:40:42 - 08:10:42 5456
Brewster 07:55:44 -65.2 Dark Down 24.0 124.6 Low 07:40:44 - 08:10:44 5439
Manson/Chelan 07:55:46 -65.4 Dark Down 23.9 124.2 Low 07:40:46 - 08:10:46 5425
Wenatchee 07:55:49 -65.8 Dark Down 24.1 123.9 Low 07:40:49 - 08:10:49 5394
Ellensburg 07:55:51 -66.2 Dark Down 24.2 123.5 Low 07:40:51 - 08:10:51 5366
Yakima 07:55:53 -66.6 Dark Down 24.4 123.4 Low 07:40:53 - 08:10:53 5339
Toppenish/White Swan 07:55:53 -66.9 Dark Down 24.6 123.4 Low 07:40:53 - 08:10:53 5323
Pasco 07:55:50 -67.0 Dark Down 25.4 124.5 Low 07:40:50 - 08:10:50 5313
PNWRO 07:55:50 -67.3 Dark Down 25.7 124.6 Low 07:40:50 - 08:10:50 5296
Goldendale 07:55:57 -67.4 Dark Down 24.7 122.8 Low 07:40:57 - 08:10:57 5286
The Dalles 07:55:59 -67.6 Dark Down 24.6 122.4 Low 07:40:59 - 08:10:59 5270
Maupin 07:56:01 -68.0 Dark Down 24.9 122.4 Low 07:41:01 - 08:11:01 5241
Sisters 07:56:06 -68.8 Dark Down 25.1 121.6 Low 07:41:06 - 08:11:06 5179
Redmond 07:56:05 -68.9 Dark Down 25.3 121.9 Low 07:41:05 - 08:11:05 5177
Bend 07:56:06 -69.1 Dark Down 25.4 121.7 Low 07:41:06 - 08:11:06 5162
Oregon Observatory 07:56:07 -69.3 Dark Down 25.4 121.6 Low 07:41:07 - 08:11:07 5150
La Pine/Gilchrist 07:56:08 -69.5 Dark Down 25.4 121.4 Low 07:41:08 - 08:11:08 5135
North Lake 07:56:08 -69.9 Dark Down 26.1 121.8 Low 07:41:08 - 08:11:08 5102
Paisley 07:56:09 -70.5 Dark Down 26.6 121.9 Low 07:41:09 - 08:11:09 5061
Klamath Falls 07:56:15 -70.9 Dark Down 26.0 120.6 Low 07:41:15 - 08:11:15 5028
Lakeview 07:56:09 -71.0 Dark Down 27.0 121.8 Low 07:41:09 - 08:11:09 5023
Cedarville 07:56:12 -71.7 Dark Down 27.4 121.7 Low 07:41:12 - 08:11:12 4973
Fall River/Burney 07:56:18 -72.1 Dark Down 26.9 120.4 Low 07:41:18 - 08:11:18 4937
Susanville 07:56:18 -72.8 Dark Down 27.7 120.8 Low 07:41:18 - 08:11:18 4888
Greenville 07:56:20 -73.0 Dark Down 27.7 120.4 Low 07:41:20 - 08:11:20 4867
Gimple 07:56:20 -73.0 Dark Down 27.7 120.5 Low 07:41:20 - 08:11:20 4867
Quincy 07:56:21 -73.2 Dark Down 27.8 120.3 Low 07:41:21 - 08:11:21 4851
Portola 07:56:20 -73.4 Dark Down 28.1 120.7 Low 07:41:20 - 08:11:20 4841
Dunrhomin 07:55:20 -69.6 Dark Down 37.0 135.2 Up 07:40:20 - 08:10:20 4835
Reno 07:56:18 -73.7 Dark Down 28.7 121.1 Low 07:41:18 - 08:11:18 4819
Carson City 07:56:20 -74.1 Dark Down 28.9 121.0 Low 07:41:20 - 08:11:20 4790
Yerington 07:56:18 -74.3 Dark Down 29.4 121.4 Low 07:41:18 - 08:11:18 4774
Gardnerville 07:56:20 -74.3 Dark Down 29.1 120.9 Low 07:41:20 - 08:11:20 4771
Hawthorne 07:56:18 -74.7 Dark Down 30.0 121.6 Up 07:41:18 - 08:11:18 4736
Tonopah 07:56:14 -75.2 Dark Down 31.2 122.6 Up 07:41:14 - 08:11:14 4695
Lee Vining 07:56:22 -75.3 Dark Down 30.0 121.0 Low 07:41:22 - 08:11:22 4692
Bishop 07:56:21 -75.9 Dark Down 30.8 121.3 Up 07:41:21 - 08:11:21 4641
Beatty 07:56:17 -76.3 Dark Down 32.1 122.4 Up 07:41:17 - 08:11:17 4599
Indian Springs 07:56:14 -76.4 Dark Down 33.0 123.2 Up 07:41:14 - 08:11:14 4570
Henderson 07:56:12 -76.8 Dark Down 33.8 123.5 Up 07:41:12 - 08:11:12 4524
CPSLO 07:56:36 -77.9 Dark Down 30.3 118.4 Up 07:41:36 - 08:11:36 4474
Patrick 07:56:10 -77.2 Dark Down 34.9 124.1 Up 07:41:10 - 08:11:10 4468
Kingman/Dolan Springs 07:56:11 -77.4 Dark Down 34.9 123.8 Up 07:41:11 - 08:11:11 4450
Laughlin/Bullhead City 07:56:14 -77.6 Dark Down 34.6 123.4 Up 07:41:14 - 08:11:14 4449
Mohave Valley 07:56:14 -77.8 Dark Down 34.7 123.2 Up 07:41:14 - 08:11:14 4426
Lake Havasu City 07:56:14 -78.1 Dark Down 35.1 123.2 Up 07:41:14 - 08:11:14 4391
Wildwood 07:56:33 -79.2 Dark Down 32.3 119.4 Up 07:41:33 - 08:11:33 4367
Parker 07:56:16 -78.5 Dark Down 35.3 123.0 Up 07:41:16 - 08:11:16 4361
Idyllwild 07:56:27 -79.4 Dark Down 33.9 120.8 Up 07:41:27 - 08:11:27 4333
George/Scottsdale 07:56:07 -78.0 Dark Down 37.2 124.9 Up 07:41:07 - 08:11:07 4318
Blythe 07:56:19 -79.0 Dark Down 35.4 122.5 Up 07:41:19 - 08:11:19 4317
Calipatria 07:56:24 -79.8 Dark Down 35.0 121.4 Up 07:41:24 - 08:11:24 4276
Yuma 07:56:21 -79.9 Dark Down 35.9 121.9 Up 07:41:21 - 08:11:21 4236

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 07:53UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 16.20 165
Alphard        09:27:35.2 -08:39:30  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 2021/01/14 21:14:51 UT

Marc W. Buie, Southwest Research Institute

RECON