RECON: TNO occultation with 14QY441

Event between 14QY441 and star GA1140:01828812 with event index number of 2515368

Geocentric closest approach at 2028/02/19 03:37:19 UTC

J2000 position of star is 06:05:25.8 +25:45:00
Equinox of date position of star is 06:06:48.0 +25:44:48
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon. Moon is 32% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 37.0 AU from the Sun and 36.5 AU from the Earth.
The TNO is moving 11.3 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 510 seconds.
The 1-sigma cross-track error in the shadow position is 1701 km.
The sky-plane scale is 26478.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 38.5 sec chord
Diameter=178.2 km assuming a 30% albedo -- 15.7 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 14QY441, (2028/02/19 03:52UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:41.7 +07:24:36  0.4 18.51 159
Alnath         05:28:04.4 +28:37:43  1.6  9.16 178
139 Tau        05:59:44.5 +25:57:17  4.7  1.69 172
PPM 095354     06:06:50.3 +25:47:49  8.2  0.09 170
14QY441        06:07:10.4 +25:44:45 15.2       170
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 1.8 sigma about the mid-time.
The median site spacing is 32.4 km RECON observability=1.0 and success probability=33.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 03:36:47 -30.0 Dark Down 63.3 191.2 Up 03:21:47 - 03:51:47 981
Kamloops 03:38:14 -21.9 Dark Down 64.2 162.1 Up 03:23:14 - 03:53:14 858
Kelowna 03:38:09 -22.6 Dark Down 65.2 163.4 Up 03:23:09 - 03:53:09 772
Peachland 03:38:12 -22.5 Dark Down 65.2 162.7 Up 03:23:12 - 03:53:12 762
Summerland 03:38:11 -22.5 Dark Down 65.4 162.8 Up 03:23:11 - 03:53:11 746
Penticton 03:38:11 -22.6 Dark Down 65.5 163.0 Up 03:23:11 - 03:53:11 739
Oliver 03:38:10 -22.7 Dark Down 65.8 162.8 Up 03:23:10 - 03:53:10 703
Anarchist Mountain Observatory 03:38:10 -22.8 Dark Down 66.0 163.1 Up 03:23:10 - 03:53:10 685
Victoria 03:38:36 -20.3 Dark Down 65.5 154.3 Up 03:23:36 - 03:53:36 658
Tonasket 03:38:10 -22.8 Dark Down 66.3 162.7 Up 03:23:10 - 03:53:10 654
Okanogan 03:38:12 -22.8 Dark Down 66.6 162.2 Up 03:23:12 - 03:53:12 620
Brewster 03:38:13 -22.7 Dark Down 66.8 161.5 Up 03:23:13 - 03:53:13 593
Manson/Chelan 03:38:16 -22.5 Dark Down 66.9 160.6 Up 03:23:16 - 03:53:16 574
Wenatchee 03:38:18 -22.4 Dark Down 67.3 159.8 Up 03:23:18 - 03:53:18 526
Ellensburg 03:38:20 -22.3 Dark Down 67.7 159.0 Up 03:23:20 - 03:53:20 485
Yakima 03:38:20 -22.4 Dark Down 68.0 158.6 Up 03:23:20 - 03:53:20 443
Toppenish/White Swan 03:38:19 -22.5 Dark Down 68.3 158.8 Up 03:23:19 - 03:53:19 419
PNWRO 03:38:10 -23.6 Dark Down 69.0 162.0 Up 03:23:10 - 03:53:10 374
Goldendale 03:38:23 -22.3 Dark Down 68.7 157.3 Up 03:23:23 - 03:53:23 365
The Dalles 03:38:25 -22.1 Dark Down 68.8 156.2 Up 03:23:25 - 03:53:25 343
Maupin 03:38:25 -22.2 Dark Down 69.2 156.0 Up 03:23:25 - 03:53:25 299
Sisters 03:38:29 -22.0 Dark Down 69.9 153.9 Up 03:23:29 - 03:53:29 210
Bend 03:38:28 -22.2 Dark Down 70.2 154.2 Up 03:23:28 - 03:53:28 184
Oregon Observatory 03:38:29 -22.1 Dark Down 70.3 153.7 Up 03:23:29 - 03:53:29 166
North Lake 03:38:26 -22.5 Dark Down 71.0 154.3 Up 03:23:26 - 03:53:26 96
Chiloquin 03:38:33 -21.9 Dark Down 71.3 150.9 Up 03:23:33 - 03:53:33 30
Klamath Falls 03:38:33 -22.0 Dark Down 71.6 150.7 Up 03:23:33 - 03:53:33 -7
Lakeview 03:38:23 -23.0 Dark Down 72.1 154.3 Up 03:23:23 - 03:53:23 -20
Cedarville 03:38:23 -23.2 Dark Down 72.8 153.9 Up 03:23:23 - 03:53:23 -91
Fall River/Burney 03:38:32 -22.4 Dark Down 72.8 149.8 Up 03:23:32 - 03:53:32 -135
Susanville 03:38:27 -23.0 Dark Down 73.6 150.9 Up 03:23:27 - 03:53:27 -207
Greenville 03:38:30 -22.8 Dark Down 73.7 149.6 Up 03:23:30 - 03:53:30 -234
Gimple 03:38:29 -22.8 Dark Down 73.8 149.8 Up 03:23:29 - 03:53:29 -235
Dunrhomin 03:36:35 -34.3 Dark Down 74.6 201.7 Up 03:21:35 - 03:51:35 -246
Quincy 03:38:30 -22.8 Dark Down 73.9 149.2 Up 03:23:30 - 03:53:30 -256
Portola 03:38:27 -23.1 Dark Down 74.2 150.4 Up 03:23:27 - 03:53:27 -273
Reno 03:38:22 -23.7 Dark Down 74.7 151.8 Up 03:23:22 - 03:53:22 -305
Carson City 03:38:22 -23.7 Dark Down 75.0 151.3 Up 03:23:22 - 03:53:22 -344
Yerington 03:38:18 -24.2 Dark Down 75.4 152.9 Up 03:23:18 - 03:53:18 -368
Gardnerville 03:38:22 -23.8 Dark Down 75.2 151.0 Up 03:23:22 - 03:53:22 -370
Hawthorne 03:38:14 -24.6 Dark Down 76.0 153.8 Up 03:23:14 - 03:53:14 -421
Tonopah 03:38:04 -25.7 Dark Down 76.9 158.0 Up 03:23:04 - 03:53:04 -478
Lee Vining 03:38:18 -24.3 Dark Down 76.3 151.2 Up 03:23:18 - 03:53:18 -479
Bishop 03:38:13 -24.9 Dark Down 77.1 152.5 Up 03:23:13 - 03:53:13 -548
Beatty 03:38:01 -26.2 Dark Down 78.1 157.8 Up 03:23:01 - 03:53:01 -606
Indian Springs 03:37:53 -27.1 Dark Down 78.7 161.7 Up 03:22:53 - 03:52:53 -645
Henderson 03:37:48 -27.7 Dark Down 79.3 163.9 Up 03:22:48 - 03:52:48 -706
Patrick 03:37:40 -28.6 Dark Down 80.2 168.5 Up 03:22:40 - 03:52:40 -777
Kingman/Dolan Springs 03:37:41 -28.5 Dark Down 80.3 167.2 Up 03:22:41 - 03:52:41 -801
Laughlin/Bullhead City 03:37:45 -28.1 Dark Down 80.3 164.6 Up 03:22:45 - 03:52:45 -802
Mohave Valley 03:37:45 -28.1 Dark Down 80.5 164.2 Up 03:22:45 - 03:52:45 -832
Lake Havasu City 03:37:44 -28.4 Dark Down 81.0 164.8 Up 03:22:44 - 03:52:44 -876
Wildwood 03:38:17 -25.0 Dark Down 79.8 143.2 Up 03:23:17 - 03:53:17 -904
Parker 03:37:43 -28.4 Dark Down 81.3 164.4 Up 03:22:43 - 03:52:43 -915
Idyllwild 03:38:03 -26.5 Dark Down 80.9 150.6 Up 03:23:03 - 03:53:03 -952
George/Scottsdale 03:37:24 -30.4 Dark Down 82.0 178.5 Up 03:22:24 - 03:52:24 -966
Calipatria 03:37:53 -27.5 Dark Down 81.9 155.0 Up 03:22:53 - 03:52:53 -1023
Yuma 03:37:47 -28.3 Dark Down 82.6 159.2 Up 03:22:47 - 03:52:47 -1073

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 14QY441, (2028/02/19 03:52UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.51 159
Alnath         05:26:17.6 +28:36:23  1.6  9.16 178
139 Tau        05:57:59.6 +25:57:14  4.7  1.69 172
PPM 095354     06:05:05.6 +25:48:03  8.2  0.09 170
14QY441        06:05:25.8 +25:45:00 15.2       170
Positions are for J2000

Event circumstances last updated at 2022/02/08 00:35:10 UT

Marc W. Buie, Southwest Research Institute

RECON