RECON: TNO occultation with 533561

Event between (533561) 14JN80 and star GA0780:09428150 with event index number of 2586577

Geocentric closest approach at 2027/02/25 12:20:55 UTC

J2000 position of star is 18:06:32.9 -10:07:08
Equinox of date position of star is 18:07:54.0 -10:06:53
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 59 degrees from the moon. Moon is 76% illuminated.
Apparent brightness V=22.5

[RECON map]
Object is 37.4 AU from the Sun and 37.8 AU from the Earth.
Apparent velocity is 19.0 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 720 seconds.
The 1-sigma cross-track error in the shadow position is 3422 km.
The sky-plane scale is 27403.6 km/arcsec.

The object has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 15.1 sec chord
Diameter=117.7 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 533561, (2027/02/25 12:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:04.6 -26:29:23  0.9 28.15  34
35Eta Oph      17:11:56.2 -15:45:24  2.6 14.78  44
PPM 201392     18:07:36.2 -08:19:11  6.1  1.80  59
PPM 234074     18:09:47.8 -10:32:42  8.0  0.61  59
PPM 234018     18:07:24.6 -10:08:17  9.5  0.16  59
533561         18:08:02.9 -10:06:51 16.2        59
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 1.3 sigma about the mid-time.
The median site spacing is 14.9 km RECON observability=0.5 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 12:19:31 -25.0 Dark Up 14.4 126.8 Really Low 12:04:31 - 12:34:31 12030
Sleaford 12:20:18 -15.8 AT Up 20.0 140.5 Low 12:05:18 - 12:35:18 11999
Kelowna 12:19:29 -24.7 Dark Up 15.3 127.4 Really Low 12:04:29 - 12:34:29 11995
Peachland 12:19:30 -24.9 Dark Up 15.2 127.1 Really Low 12:04:30 - 12:34:30 11992
Summerland 12:19:28 -24.9 Dark Up 15.4 127.2 Really Low 12:04:28 - 12:34:28 11985
Penticton 12:19:30 -24.8 Dark Up 15.5 127.3 Really Low 12:04:30 - 12:34:30 11982
Oliver 12:19:26 -25.0 Dark Up 15.7 127.2 Really Low 12:04:26 - 12:34:26 11968
Anarchist Mountain Observatory 12:19:27 -24.9 Dark Up 15.9 127.3 Really Low 12:04:27 - 12:34:27 11961
Victoria 12:19:16 -27.6 Dark Up 14.0 123.7 Really Low 12:04:16 - 12:34:16 11950
Okanogan 12:19:23 -25.2 Dark Up 16.2 126.9 Really Low 12:04:23 - 12:34:23 11934
Brewster 12:19:23 -25.4 Dark Up 16.2 126.7 Really Low 12:04:23 - 12:34:23 11923
Manson/Chelan 12:19:20 -25.7 Dark Up 16.1 126.3 Really Low 12:04:20 - 12:34:20 11915
Wenatchee 12:19:17 -26.0 Dark Up 16.3 126.1 Really Low 12:04:17 - 12:34:17 11895
Ellensburg 12:19:16 -26.2 Dark Up 16.4 125.8 Really Low 12:04:16 - 12:34:16 11878
Yakima 12:19:13 -26.3 Dark Up 16.6 125.7 Really Low 12:04:13 - 12:34:13 11859
Toppenish/White Swan 12:19:12 -26.3 Dark Up 16.9 125.7 Really Low 12:04:12 - 12:34:12 11849
PNWRO 12:19:17 -25.4 Dark Up 17.9 126.9 Really Low 12:04:17 - 12:34:17 11827
The Dalles 12:19:08 -27.0 Dark Up 16.9 124.9 Really Low 12:04:08 - 12:34:08 11815
Maupin 12:19:07 -27.1 Dark Up 17.2 124.9 Really Low 12:04:07 - 12:34:07 11795
Sisters 12:19:02 -27.7 Dark Up 17.4 124.2 Really Low 12:04:02 - 12:34:02 11754
Bend 12:18:59 -27.6 Dark Up 17.6 124.3 Really Low 12:03:59 - 12:33:59 11742
Oregon Observatory 12:18:59 -27.7 Dark Up 17.7 124.2 Really Low 12:03:59 - 12:33:59 11733
Chiloquin 12:18:53 -28.3 Dark Up 18.1 123.5 Really Low 12:03:53 - 12:33:53 11667
Klamath Falls 12:18:50 -28.4 Dark Up 18.4 123.4 Really Low 12:03:50 - 12:33:50 11649
Cedarville 12:18:54 -27.4 Dark Up 19.7 124.6 Really Low 12:03:54 - 12:33:54 11607
Fall River/Burney 12:18:47 -28.4 Dark Up 19.2 123.4 Really Low 12:03:47 - 12:33:47 11584
Greenville 12:18:46 -28.3 Dark Up 20.0 123.5 Low 12:03:46 - 12:33:46 11532
Gimple 12:18:46 -28.2 Dark Up 20.1 123.5 Low 12:03:46 - 12:33:46 11532
Quincy 12:18:43 -28.3 Dark Up 20.1 123.4 Low 12:03:43 - 12:33:43 11521
Portola 12:18:45 -28.0 Dark Up 20.5 123.8 Low 12:03:45 - 12:33:45 11512
Reno 12:18:47 -27.5 Dark Up 21.1 124.2 Low 12:03:47 - 12:33:47 11495
Carson City 12:18:45 -27.6 Dark Up 21.3 124.1 Low 12:03:45 - 12:33:45 11474
Yerington 12:18:45 -27.2 Dark Up 21.8 124.6 Low 12:03:45 - 12:33:45 11460
Gardnerville 12:18:45 -27.6 Dark Up 21.4 124.1 Low 12:03:45 - 12:33:45 11459
Hawthorne 12:18:47 -26.8 Dark Up 22.4 124.8 Low 12:03:47 - 12:33:47 11430
Dunrhomin 12:19:40 -16.1 AT Up 29.2 137.5 Low 12:04:40 - 12:34:40 11427
Nikitin 12:19:36 -16.2 AT Up 29.4 137.4 Low 12:04:36 - 12:34:36 11417
CU-SBO 12:19:37 -16.2 AT Up 29.4 137.3 Low 12:04:37 - 12:34:37 11414
Lee Vining 12:18:42 -27.3 Dark Up 22.4 124.2 Low 12:03:42 - 12:33:42 11399
Bishop 12:18:41 -26.9 Dark Up 23.2 124.6 Low 12:03:41 - 12:33:41 11359
Beatty 12:18:46 -25.6 Dark Up 24.5 125.8 Low 12:03:46 - 12:33:46 11322
Patrick 12:18:50 -23.5 Dark Up 27.3 127.6 Low 12:03:50 - 12:33:50 11210
Laughlin/Bullhead City 12:18:46 -24.1 Dark Up 27.0 126.9 Low 12:03:46 - 12:33:46 11198
Lake Havasu City 12:18:45 -23.9 Dark Up 27.6 126.8 Low 12:03:45 - 12:33:45 11153
Wildwood 12:18:29 -27.6 Dark Up 24.9 123.2 Low 12:03:29 - 12:33:29 11151
Idyllwild 12:18:34 -26.0 Dark Up 26.4 124.5 Low 12:03:34 - 12:33:34 11119
George/Scottsdale 12:18:50 -22.0 Dark Up 29.7 128.6 Low 12:03:50 - 12:33:50 11082
Calipatria 12:18:34 -25.1 Dark Up 27.5 125.2 Low 12:03:34 - 12:33:34 11069
Yuma 12:18:37 -24.4 Dark Up 28.4 125.8 Low 12:03:37 - 12:33:37 11034

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 533561, (2027/02/25 12:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.15  34
35Eta Oph      17:10:22.7 -15:43:29  2.6 14.78  44
PPM 201392     18:06:07.4 -08:19:27  6.1  1.80  59
PPM 234074     18:08:17.5 -10:33:03  8.0  0.61  59
PPM 234018     18:05:54.7 -10:08:33  9.5  0.16  59
533561         18:06:32.9 -10:07:08 16.2        59
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:27:03 UT

Marc W. Buie, Southwest Research Institute

RECON