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 03:27:45 UTC

J2000 position of star is 06:05:25.8 +25:45:00
Equinox of date position of star is 06:06:55.1 +25:44:47
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.
Apparent brightness V=21.5

[RECON map]
Object is 37.0 AU from the Sun and 36.5 AU from the Earth.
Apparent velocity is 11.4 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 331 seconds.
The 1-sigma cross-track error in the shadow position is 1539 km.
The sky-plane scale is 26478.1 km/arcsec.

The object has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 38.6 sec chord
Diameter=178.2 km assuming a 30% albedo -- 15.8 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 2.7 sigma about the mid-time.
The median site spacing is 36.9 km RECON observability=1.0 and success probability=38.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 03:27:27 -28.7 Dark Down 63.6 186.5 Up 03:12:27 - 03:42:27 -288
Kamloops 03:28:53 -20.5 Dark Down 63.7 157.4 Up 03:13:53 - 03:43:53 -393
Kelowna 03:28:49 -21.1 Dark Down 64.7 158.6 Up 03:13:49 - 03:43:49 -480
Peachland 03:28:51 -21.0 Dark Down 64.7 157.9 Up 03:13:51 - 03:43:51 -490
Summerland 03:28:51 -21.0 Dark Down 64.9 157.9 Up 03:13:51 - 03:43:51 -505
Penticton 03:28:50 -21.1 Dark Down 65.0 158.1 Up 03:13:50 - 03:43:50 -513
Oliver 03:28:50 -21.2 Dark Down 65.3 157.8 Up 03:13:50 - 03:43:50 -548
Anarchist Mountain Observatory 03:28:49 -21.3 Dark Down 65.5 158.1 Up 03:13:49 - 03:43:49 -567
Victoria 03:29:15 -18.8 Dark Down 64.8 149.6 Up 03:14:15 - 03:44:15 -589
Okanogan 03:28:52 -21.2 Dark Down 66.0 157.1 Up 03:13:52 - 03:43:52 -631
Brewster 03:28:53 -21.1 Dark Down 66.2 156.4 Up 03:13:53 - 03:43:53 -658
Manson/Chelan 03:28:56 -20.9 Dark Down 66.3 155.5 Up 03:13:56 - 03:43:56 -677
Wenatchee 03:28:58 -20.9 Dark Down 66.7 154.7 Up 03:13:58 - 03:43:58 -724
Ellensburg 03:29:00 -20.8 Dark Down 67.0 153.8 Up 03:14:00 - 03:44:00 -765
Yakima 03:29:00 -20.8 Dark Down 67.4 153.3 Up 03:14:00 - 03:44:00 -807
Toppenish/White Swan 03:28:59 -20.9 Dark Down 67.6 153.5 Up 03:13:59 - 03:43:59 -831
PNWRO 03:28:50 -22.0 Dark Down 68.4 156.4 Up 03:13:50 - 03:43:50 -878
The Dalles 03:29:06 -20.5 Dark Down 68.1 150.9 Up 03:14:06 - 03:44:06 -906
Maupin 03:29:05 -20.6 Dark Down 68.5 150.6 Up 03:14:05 - 03:44:05 -950
Sisters 03:29:10 -20.3 Dark Down 69.1 148.4 Up 03:14:10 - 03:44:10 -1038
Bend 03:29:09 -20.5 Dark Down 69.4 148.6 Up 03:14:09 - 03:44:09 -1065
Oregon Observatory 03:29:10 -20.4 Dark Down 69.5 148.1 Up 03:14:10 - 03:44:10 -1082
Chiloquin 03:29:15 -20.2 Dark Down 70.4 145.2 Up 03:14:15 - 03:44:15 -1217
Klamath Falls 03:29:15 -20.3 Dark Down 70.7 144.8 Up 03:14:15 - 03:44:15 -1254
Cedarville 03:29:04 -21.5 Dark Down 71.9 147.6 Up 03:14:04 - 03:44:04 -1340
Fall River/Burney 03:29:14 -20.6 Dark Down 71.8 143.7 Up 03:14:14 - 03:44:14 -1382
Greenville 03:29:12 -21.0 Dark Down 72.8 143.1 Up 03:14:12 - 03:44:12 -1482
Gimple 03:29:11 -21.1 Dark Down 72.8 143.3 Up 03:14:11 - 03:44:11 -1483
Quincy 03:29:12 -21.0 Dark Down 72.9 142.7 Up 03:14:12 - 03:44:12 -1504
Dunrhomin 03:27:17 -32.5 Dark Down 75.1 193.9 Up 03:12:17 - 03:42:17 -1517
Portola 03:29:08 -21.4 Dark Down 73.2 143.7 Up 03:14:08 - 03:44:08 -1521
Nikitin 03:27:18 -32.6 Dark Down 75.3 194.0 Up 03:12:18 - 03:42:18 -1536
CU-SBO 03:27:18 -32.5 Dark Down 75.4 193.8 Up 03:12:18 - 03:42:18 -1544
Reno 03:29:04 -21.9 Dark Down 73.7 144.9 Up 03:14:04 - 03:44:04 -1554
Carson City 03:29:04 -21.9 Dark Down 74.0 144.3 Up 03:14:04 - 03:44:04 -1593
Yerington 03:29:00 -22.4 Dark Down 74.5 145.7 Up 03:14:00 - 03:44:00 -1618
Gardnerville 03:29:04 -21.9 Dark Down 74.3 143.9 Up 03:14:04 - 03:44:04 -1620
Hawthorne 03:28:57 -22.8 Dark Down 75.1 146.3 Up 03:13:57 - 03:43:57 -1672
Lee Vining 03:29:01 -22.5 Dark Down 75.3 143.6 Up 03:14:01 - 03:44:01 -1729
Bishop 03:28:56 -23.1 Dark Down 76.1 144.4 Up 03:13:56 - 03:43:56 -1799
Beatty 03:28:44 -24.4 Dark Down 77.2 148.8 Up 03:13:44 - 03:43:44 -1859
Patrick 03:28:23 -26.7 Dark Down 79.6 157.0 Up 03:13:23 - 03:43:23 -2034
Laughlin/Bullhead City 03:28:28 -26.2 Dark Down 79.6 153.2 Up 03:13:28 - 03:43:28 -2058
Lake Havasu City 03:28:27 -26.4 Dark Down 80.3 152.7 Up 03:13:27 - 03:43:27 -2133
Wildwood 03:29:00 -23.0 Dark Down 78.5 134.3 Up 03:14:00 - 03:44:00 -2154
Idyllwild 03:28:46 -24.6 Dark Down 79.8 139.9 Up 03:13:46 - 03:43:46 -2205
George/Scottsdale 03:28:08 -28.5 Dark Down 81.7 163.8 Up 03:13:08 - 03:43:08 -2226
Calipatria 03:28:38 -25.6 Dark Down 80.9 142.7 Up 03:13:38 - 03:43:38 -2278
Yuma 03:28:31 -26.3 Dark Down 81.7 145.3 Up 03:13:31 - 03:43:31 -2330

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 2024/01/09 04:44:50 UT

Marc W. Buie, Southwest Research Institute

RECON