RECON: TNO occultation with 469505

Event between (469505) 03FE128 and star GA0700:07274467 with event index number of 1698728

Geocentric closest approach at 2027/06/10 10:49:44 UTC

J2000 position of star is 16:56:27.3 -19:08:38
Equinox of date position of star is 16:57:53.5 -19:10:51
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 99 degrees from the moon. Moon is 39% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 37.0 AU from the Sun and 36.0 AU from the Earth.
Apparent velocity is 23.9 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 111 seconds.
The 1-sigma cross-track error in the shadow position is 1332 km.
The sky-plane scale is 26086.5 km/arcsec.

The object has an absolute magnitude Hv=6.3
Diameter=322.1 km assuming a 5% albedo -- 13.7 sec chord
Diameter=131.5 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 469505, (2027/06/10 10:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.7 -26:29:25  0.9  9.59  93
35Eta Oph      17:11:57.2 -15:45:25  2.6  4.77 102
PPM 232367     16:58:40.8 -19:34:52  6.1  0.42  99
PPM 232321     16:56:42.8 -18:55:35  8.1  0.41  98
469505         16:58:03.9 -19:11:07 15.4        99
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 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:48:09 -7.6 NT Down 9.3 223.6 Really Low 10:38:22 - 10:57:55 12082
Kelowna 10:48:04 -7.9 NT Down 9.5 224.5 Really Low 10:38:17 - 10:57:50 12038
Peachland 10:48:04 -8.1 NT Down 9.7 224.2 Really Low 10:38:18 - 10:57:51 12037
Summerland 10:48:04 -8.2 NT Down 9.8 224.3 Really Low 10:38:18 - 10:57:51 12030
Victoria 10:48:11 -10.5 NT Down 12.2 221.3 Really Low 10:38:24 - 10:57:57 12026
Penticton 10:48:03 -8.2 NT Down 9.8 224.4 Really Low 10:38:16 - 10:57:49 12026
Oliver 10:48:02 -8.5 NT Down 10.0 224.5 Really Low 10:38:15 - 10:57:48 12011
Anarchist Mountain Observatory 10:48:01 -8.5 NT Down 10.0 224.6 Really Low 10:38:15 - 10:57:48 12001
Okanogan 10:48:00 -9.1 NT Down 10.6 224.5 Really Low 10:38:14 - 10:57:47 11975
Brewster 10:48:00 -9.4 NT Down 10.9 224.4 Really Low 10:38:14 - 10:57:47 11966
Manson/Chelan 10:48:00 -9.7 NT Down 11.2 224.1 Really Low 10:38:14 - 10:57:47 11961
Sleaford 10:47:47 -0.4 Sun up Down 1.6 235.3 Really Low 10:38:00 - 10:57:33 11942
Wenatchee 10:48:00 -10.2 NT Down 11.6 224.1 Really Low 10:38:13 - 10:57:46 11941
Ellensburg 10:47:58 -10.6 NT Down 12.0 223.9 Really Low 10:38:12 - 10:57:45 11925
Yakima 10:47:58 -10.9 NT Down 12.3 224.0 Really Low 10:38:12 - 10:57:45 11906
Toppenish/White Swan 10:47:57 -11.0 NT Down 12.4 224.1 Really Low 10:38:10 - 10:57:43 11894
The Dalles 10:47:56 -12.0 NT Down 13.4 223.6 Really Low 10:38:10 - 10:57:43 11866
PNWRO 10:47:53 -10.6 NT Down 12.0 225.4 Really Low 10:38:06 - 10:57:39 11857
Maupin 10:47:56 -12.2 AT Down 13.6 223.8 Really Low 10:38:09 - 10:57:42 11844
Sisters 10:47:54 -13.2 AT Down 14.5 223.5 Really Low 10:38:07 - 10:57:40 11806
Bend 10:47:53 -13.2 AT Down 14.5 223.7 Really Low 10:38:07 - 10:57:40 11791
Oregon Observatory 10:47:53 -13.4 AT Down 14.7 223.7 Really Low 10:38:06 - 10:57:39 11784
Chiloquin 10:47:51 -14.7 AT Down 15.9 223.6 Really Low 10:38:05 - 10:57:38 11720
Klamath Falls 10:47:50 -14.9 AT Down 16.1 223.7 Really Low 10:38:04 - 10:57:37 11700
Cedarville 10:47:44 -14.7 AT Down 15.8 225.1 Really Low 10:37:58 - 10:57:31 11641
Fall River/Burney 10:47:46 -15.6 AT Down 16.8 224.2 Really Low 10:38:00 - 10:57:33 11630
Greenville 10:47:42 -16.1 AT Down 17.2 224.8 Really Low 10:37:56 - 10:57:29 11572
Gimple 10:47:43 -16.1 AT Down 17.1 224.9 Really Low 10:37:57 - 10:57:30 11571
Quincy 10:47:42 -16.3 AT Down 17.3 224.8 Really Low 10:37:55 - 10:57:28 11560
Portola 10:47:41 -16.2 AT Down 17.2 225.2 Really Low 10:37:55 - 10:57:28 11547
Reno 10:47:39 -16.1 AT Down 17.0 225.8 Really Low 10:37:52 - 10:57:25 11522
Carson City 10:47:38 -16.3 AT Down 17.2 225.9 Really Low 10:37:51 - 10:57:24 11501
Gardnerville 10:47:37 -16.5 AT Down 17.4 226.0 Really Low 10:37:51 - 10:57:24 11485
Yerington 10:47:36 -16.2 AT Down 17.0 226.5 Really Low 10:37:49 - 10:57:22 11480
Hawthorne 10:47:33 -16.2 AT Down 17.0 227.0 Really Low 10:37:46 - 10:57:19 11444
Lee Vining 10:47:33 -16.9 AT Down 17.7 226.7 Really Low 10:37:46 - 10:57:19 11417
Bishop 10:47:30 -17.0 AT Down 17.7 227.4 Really Low 10:37:43 - 10:57:16 11368
Dunrhomin 10:47:09 -7.6 NT Down 7.9 236.6 Really Low 10:37:23 - 10:56:56 11316
Beatty 10:47:25 -16.5 AT Down 17.0 228.8 Really Low 10:37:39 - 10:57:12 11314
Nikitin 10:47:09 -7.7 NT Down 8.0 236.6 Really Low 10:37:23 - 10:56:56 11305
CU-SBO 10:47:08 -7.8 NT Down 8.1 236.5 Really Low 10:37:22 - 10:56:55 11302
Patrick 10:47:13 -15.9 AT Down 16.2 231.2 Really Low 10:37:27 - 10:57:00 11168
Laughlin/Bullhead City 10:47:15 -16.5 AT Down 16.8 230.8 Really Low 10:37:29 - 10:57:02 11164
Wildwood 10:47:22 -19.6 Dark Down 20.0 228.1 Low 10:37:36 - 10:57:09 11158
Lake Havasu City 10:47:13 -16.8 AT Down 17.1 231.1 Really Low 10:37:27 - 10:57:00 11114
Idyllwild 10:47:17 -18.8 Dark Down 19.1 229.6 Really Low 10:37:31 - 10:57:04 11104
Calipatria 10:47:13 -18.5 Dark Down 18.8 230.6 Really Low 10:37:26 - 10:56:59 11040
George/Scottsdale 10:47:05 -15.9 AT Down 16.0 233.0 Really Low 10:37:19 - 10:56:52 11016
Yuma 10:47:10 -18.3 Dark Down 18.5 231.3 Really Low 10:37:23 - 10:56:56 10994

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 469505, (2027/06/10 10:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.59  93
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.77 102
PPM 232367     16:57:03.9 -19:32:25  6.1  0.42  99
PPM 232321     16:55:06.4 -18:53:03  8.1  0.41  98
469505         16:56:27.3 -19:08:38 15.4        99
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:28:45 UT

Marc W. Buie, Southwest Research Institute

RECON