RECON: TNO occultation with 469506

Event between (469506) 03FF128 and star GA0680:07719542 with event index number of 1140506

Geocentric closest approach at 2022/06/16 04:29:16 UTC

J2000 position of star is 16:50:29.1 -21:52:50
Equinox of date position of star is 16:51:48.8 -21:55:02
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 36 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 31.1 AU from the Sun and 30.1 AU from the Earth.
The TNO is moving 22.9 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 137 seconds.
The 1-sigma cross-track error in the shadow position is 1241 km.
The sky-plane scale is 21809.1 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=254.7 km assuming a 5% albedo -- 11.1 sec chord
Diameter=104.0 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469506, (2022/06/16 04:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.3 -26:28:48  0.9  6.62  39
23Tau Sco      16:37:17.1 -28:15:38  2.8  7.15  38
PPM 266088     16:54:45.0 -20:27:04  5.7  1.62  35
PPM 266012     16:50:55.5 -21:53:24  7.4  0.21  36
PPM 266023     16:51:23.1 -22:00:04  9.2  0.13  36
469506         16:51:49.7 -21:55:03 16.5        35
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 5.0 sigma about the mid-time.
The median site spacing is 16.1 km RECON observability=0.2 and success probability=1.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:30:59 -7.5 NT Down 12.5 155.0 Really Low 04:19:05 - 04:42:53 5104
Kamloops 04:31:37 -2.7 CT Down 9.1 142.3 Really Low 04:19:43 - 04:43:31 4751
Kelowna 04:31:36 -3.7 CT Down 10.1 142.9 Really Low 04:19:42 - 04:43:30 4733
Peachland 04:31:37 -3.6 CT Down 10.1 142.7 Really Low 04:19:43 - 04:43:31 4721
Summerland 04:31:37 -3.7 CT Down 10.2 142.7 Really Low 04:19:43 - 04:43:31 4716
Penticton 04:31:37 -3.8 CT Down 10.3 142.8 Really Low 04:19:43 - 04:43:31 4716
Oliver 04:31:38 -4.1 CT Down 10.6 142.8 Really Low 04:19:44 - 04:43:32 4699
Anarchist Mountain Observatory 04:31:38 -4.3 CT Down 10.8 142.9 Really Low 04:19:44 - 04:43:32 4695
Tonasket 04:31:38 -4.5 CT Down 11.0 142.8 Really Low 04:19:44 - 04:43:32 4678
Okanogan 04:31:40 -4.6 CT Down 11.2 142.7 Really Low 04:19:46 - 04:43:34 4658
Brewster 04:31:41 -4.7 CT Down 11.4 142.5 Really Low 04:19:47 - 04:43:35 4639
Manson/Chelan 04:31:43 -4.7 CT Down 11.4 142.1 Really Low 04:19:49 - 04:43:37 4620
Wenatchee 04:31:43 -4.9 CT Down 11.7 141.9 Really Low 04:19:49 - 04:43:37 4591
Victoria 04:31:48 -2.7 CT Down 9.5 139.5 Really Low 04:19:54 - 04:43:42 4573
Ellensburg 04:31:45 -5.1 CT Down 11.9 141.7 Really Low 04:19:51 - 04:43:39 4564
Dunrhomin 04:31:13 -17.4 AT Up 23.5 154.1 Low 04:19:19 - 04:43:07 4553
PNWRO 04:31:43 -6.6 NT Down 13.4 143.0 Really Low 04:19:49 - 04:43:37 4552
Yakima 04:31:46 -5.4 CT Down 12.2 141.6 Really Low 04:19:52 - 04:43:40 4542
CU-SBO 04:31:13 -17.6 AT Up 23.7 154.0 Low 04:19:19 - 04:43:07 4537
Toppenish/White Swan 04:31:46 -5.6 CT Down 12.5 141.8 Really Low 04:19:52 - 04:43:40 4535
Goldendale 04:31:48 -5.8 CT Down 12.7 141.3 Really Low 04:19:54 - 04:43:42 4494
The Dalles 04:31:49 -5.7 CT Down 12.7 141.0 Really Low 04:19:55 - 04:43:43 4473
Maupin 04:31:50 -6.1 NT Down 13.1 141.0 Really Low 04:19:56 - 04:43:44 4452
Sisters 04:31:53 -6.4 NT Down 13.6 140.5 Really Low 04:19:59 - 04:43:47 4390
Bend 04:31:53 -6.7 NT Down 13.9 140.7 Really Low 04:19:59 - 04:43:47 4383
Oregon Observatory 04:31:54 -6.8 NT Down 14.0 140.5 Really Low 04:20:00 - 04:43:48 4370
North Lake 04:31:53 -7.5 NT Down 14.7 140.9 Really Low 04:19:59 - 04:43:47 4347
Lakeview 04:31:54 -8.5 NT Down 15.8 141.2 Really Low 04:20:00 - 04:43:48 4299
Chiloquin 04:31:57 -7.4 NT Down 14.8 140.0 Really Low 04:20:03 - 04:43:51 4282
Cedarville 04:31:54 -9.0 NT Down 16.4 141.2 Really Low 04:20:00 - 04:43:48 4264
Klamath Falls 04:31:57 -7.7 NT Down 15.1 140.0 Really Low 04:20:03 - 04:43:51 4263
Fall River/Burney 04:31:59 -8.7 NT Down 16.2 140.1 Really Low 04:20:05 - 04:43:53 4201
Susanville 04:31:58 -9.5 NT Down 17.0 140.6 Really Low 04:20:04 - 04:43:52 4182
Gimple 04:31:59 -9.6 NT Down 17.1 140.4 Really Low 04:20:05 - 04:43:53 4159
Greenville 04:31:59 -9.5 NT Down 17.1 140.3 Really Low 04:20:05 - 04:43:53 4156
Reno 04:31:57 -10.6 NT Down 18.1 141.1 Really Low 04:20:03 - 04:43:51 4150
Portola 04:31:58 -10.0 NT Down 17.6 140.6 Really Low 04:20:04 - 04:43:52 4149
Quincy 04:32:00 -9.7 NT Down 17.3 140.3 Really Low 04:20:06 - 04:43:54 4144
Yerington 04:31:56 -11.3 NT Down 18.9 141.5 Really Low 04:20:02 - 04:43:50 4132
Carson City 04:31:58 -10.8 NT Down 18.4 141.1 Really Low 04:20:04 - 04:43:52 4128
Tonopah 04:31:52 -13.1 AT Down 20.5 143.0 Low 04:19:58 - 04:43:46 4126
Hawthorne 04:31:55 -11.9 NT Down 19.5 141.9 Really Low 04:20:01 - 04:43:49 4117
Gardnerville 04:31:59 -11.0 NT Down 18.6 141.0 Really Low 04:20:05 - 04:43:53 4113
Indian Springs 04:31:50 -15.0 AT Down 22.4 143.9 Low 04:19:56 - 04:43:44 4069
Lee Vining 04:31:58 -12.1 AT Down 19.7 141.4 Really Low 04:20:04 - 04:43:52 4067
Beatty 04:31:53 -14.1 AT Down 21.7 143.1 Low 04:19:59 - 04:43:47 4061
Henderson 04:31:48 -15.7 AT Down 23.2 144.4 Low 04:19:54 - 04:43:42 4052
Bishop 04:31:56 -12.9 AT Down 20.5 141.8 Low 04:20:02 - 04:43:50 4047
Patrick 04:31:46 -16.8 AT Down 24.2 145.2 Low 04:19:52 - 04:43:40 4040
Kingman/Dolan Springs 04:31:47 -16.9 AT Down 24.3 145.0 Low 04:19:53 - 04:43:41 4020
Laughlin/Bullhead City 04:31:48 -16.6 AT Down 24.1 144.5 Low 04:19:54 - 04:43:42 4004
Mohave Valley 04:31:49 -16.8 AT Down 24.3 144.5 Low 04:19:55 - 04:43:43 3985
George/Scottsdale 04:31:41 -19.2 Dark Down 26.5 146.5 Low 04:19:47 - 04:43:35 3977
Lake Havasu City 04:31:48 -17.2 AT Down 24.8 144.6 Low 04:19:54 - 04:43:42 3964
Parker 04:31:49 -17.5 AT Down 25.1 144.5 Low 04:19:55 - 04:43:43 3941
Idyllwild 04:31:57 -16.4 AT Down 24.2 142.3 Low 04:20:03 - 04:43:51 3846
Calipatria 04:31:54 -17.5 AT Down 25.3 143.2 Low 04:20:00 - 04:43:48 3835
Yuma 04:31:52 -18.3 Dark Down 26.1 143.8 Low 04:19:58 - 04:43:46 3829
Wildwood 04:32:02 -15.0 AT Down 23.0 140.9 Low 04:20:08 - 04:43:56 3817

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 469506, (2022/06/16 04:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  6.62  39
23Tau Sco      16:35:52.9 -28:12:58  2.8  7.15  38
PPM 266088     16:53:25.2 -20:24:57  5.7  1.62  35
PPM 266012     16:49:35.0 -21:51:09  7.4  0.21  36
PPM 266023     16:50:02.5 -21:57:50  9.2  0.13  36
469506         16:50:29.1 -21:52:50 16.5        36
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:04:57 UT

Marc W. Buie, Southwest Research Institute

RECON