RECON: TNO occultation with 469505

Event between (469505) 03FE128 and star GA0700:07744591 with event index number of 1905459

Geocentric closest approach at 2028/06/10 07:50:51 UTC

J2000 position of star is 17:04:01.0 -19:19:22
Equinox of date position of star is 17:05:27.4 -19:21:19
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 40 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 37.1 AU from the Sun and 36.1 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 125 seconds.
The 1-sigma cross-track error in the shadow position is 1339 km.
The sky-plane scale is 26180.3 km/arcsec.

The object has an absolute magnitude Hv=6.3
Diameter=322.1 km assuming a 5% albedo -- 13.8 sec chord
Diameter=131.5 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 469505, (2028/06/10 07:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.4 -26:29:33  0.9 10.67  47
35Eta Oph      17:12:00.7 -15:45:29  2.6  3.90  39
29 Oph         17:03:31.3 -18:55:29  5.9  0.67  40
PPM 232540     17:05:16.8 -19:30:01  8.2  0.17  40
PPM 232551     17:05:46.5 -19:16:25  9.4  0.09  40
469505         17:05:41.4 -19:21:37 15.2        39
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=1.0 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)
Sleaford 07:50:32 -14.1 AT Up 17.4 194.7 Really Low 07:39:36 - 08:01:29 11587
Kamloops 07:51:12 -16.2 AT Up 20.0 180.6 Low 07:40:15 - 08:02:08 11488
Kelowna 07:51:10 -17.1 AT Up 20.8 181.5 Low 07:40:14 - 08:02:07 11462
Peachland 07:51:10 -17.2 AT Up 20.9 181.2 Low 07:40:14 - 08:02:07 11456
Summerland 07:51:11 -17.3 AT Up 21.1 181.3 Low 07:40:14 - 08:02:07 11451
Penticton 07:51:10 -17.4 AT Up 21.1 181.4 Low 07:40:14 - 08:02:07 11449
Oliver 07:51:10 -17.7 AT Up 21.5 181.4 Low 07:40:14 - 08:02:07 11435
Anarchist Mountain Observatory 07:51:10 -17.9 AT Up 21.7 181.6 Low 07:40:14 - 08:02:07 11430
Okanogan 07:51:10 -18.6 Dark Up 22.3 181.4 Low 07:40:14 - 08:02:07 11401
Brewster 07:51:10 -18.8 Dark Up 22.6 181.2 Low 07:40:14 - 08:02:07 11388
Victoria 07:51:22 -18.3 Dark Up 22.1 177.6 Low 07:40:25 - 08:02:18 11381
Manson/Chelan 07:51:12 -19.0 Dark Up 22.8 180.9 Low 07:40:15 - 08:02:08 11377
Wenatchee 07:51:12 -19.5 Dark Up 23.3 180.7 Low 07:40:16 - 08:02:09 11355
Ellensburg 07:51:12 -19.9 Dark Up 23.7 180.5 Low 07:40:16 - 08:02:09 11336
Yakima 07:51:12 -20.3 Dark Up 24.1 180.4 Low 07:40:15 - 08:02:08 11318
Toppenish/White Swan 07:51:12 -20.5 Dark Up 24.3 180.6 Low 07:40:15 - 08:02:08 11309
PNWRO 07:51:07 -20.9 Dark Up 24.6 182.2 Low 07:40:11 - 08:02:04 11302
The Dalles 07:51:14 -21.3 Dark Up 25.1 179.8 Low 07:40:18 - 08:02:11 11267
Maupin 07:51:14 -21.7 Dark Up 25.5 179.9 Low 07:40:18 - 08:02:11 11248
Sisters 07:51:14 -22.6 Dark Up 26.4 179.4 Low 07:40:18 - 08:02:11 11202
Bend 07:51:15 -22.8 Dark Up 26.6 179.7 Low 07:40:18 - 08:02:11 11193
Oregon Observatory 07:51:15 -23.0 Dark Up 26.8 179.5 Low 07:40:18 - 08:02:11 11183
Chiloquin 07:51:16 -24.3 Dark Up 28.1 179.1 Low 07:40:20 - 08:02:13 11113
Klamath Falls 07:51:16 -24.6 Dark Up 28.4 179.2 Low 07:40:20 - 08:02:13 11095
Cedarville 07:51:10 -25.4 Dark Up 29.1 180.9 Low 07:40:14 - 08:02:07 11071
Dunrhomin 07:50:19 -25.6 Dark Up 28.7 196.8 Low 07:39:23 - 08:01:16 11058
Nikitin 07:50:19 -25.8 Dark Up 28.9 196.8 Low 07:39:22 - 08:01:15 11048
CU-SBO 07:50:18 -25.9 Dark Up 28.9 196.8 Low 07:39:22 - 08:01:15 11044
Fall River/Burney 07:51:14 -25.8 Dark Up 29.6 179.6 Low 07:40:18 - 08:02:11 11035
Gimple 07:51:12 -26.7 Dark Up 30.5 180.1 Up 07:40:15 - 08:02:08 10989
Greenville 07:51:14 -26.7 Dark Up 30.5 180.1 Up 07:40:17 - 08:02:10 10988
Quincy 07:51:12 -26.9 Dark Up 30.7 180.0 Up 07:40:16 - 08:02:09 10977
Portola 07:51:11 -27.1 Dark Up 30.9 180.6 Up 07:40:15 - 08:02:08 10974
Reno 07:51:09 -27.4 Dark Up 31.1 181.3 Up 07:40:13 - 08:02:06 10963
Carson City 07:51:08 -27.7 Dark Up 31.5 181.3 Up 07:40:12 - 08:02:05 10943
Yerington 07:51:06 -27.9 Dark Up 31.7 182.0 Up 07:40:09 - 08:02:02 10936
Gardnerville 07:51:08 -28.0 Dark Up 31.7 181.4 Up 07:40:12 - 08:02:05 10929
Hawthorne 07:51:04 -28.4 Dark Up 32.1 182.6 Up 07:40:08 - 08:02:01 10913
Lee Vining 07:51:06 -29.0 Dark Up 32.7 182.1 Up 07:40:09 - 08:02:02 10877
Bishop 07:51:03 -29.6 Dark Up 33.3 182.9 Up 07:40:07 - 08:02:00 10845
Beatty 07:50:56 -30.0 Dark Up 33.6 184.7 Up 07:40:00 - 08:01:53 10828
Patrick 07:50:46 -31.4 Dark Up 34.9 188.1 Up 07:39:50 - 08:01:43 10751
Laughlin/Bullhead City 07:50:48 -31.7 Dark Up 35.2 187.3 Up 07:39:52 - 08:01:45 10731
Lake Havasu City 07:50:47 -32.4 Dark Up 35.8 187.7 Up 07:39:51 - 08:01:44 10689
George/Scottsdale 07:50:37 -32.9 Dark Up 36.3 190.5 Up 07:39:40 - 08:01:33 10649
Wildwood 07:51:03 -32.8 Dark Up 36.5 182.8 Up 07:40:07 - 08:02:00 10637
Idyllwild 07:50:55 -33.2 Dark Up 36.8 185.0 Up 07:39:59 - 08:01:52 10627
Calipatria 07:50:52 -33.8 Dark Up 37.3 186.4 Up 07:39:55 - 08:01:48 10592
Yuma 07:50:46 -34.2 Dark Up 37.6 187.5 Up 07:39:50 - 08:01:43 10568

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, (2028/06/10 07:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.67  47
35Eta Oph      17:10:22.7 -15:43:29  2.6  3.90  39
29 Oph         17:01:51.2 -18:53:08  5.9  0.67  40
PPM 232540     17:03:36.3 -19:27:44  8.2  0.17  40
PPM 232551     17:04:06.1 -19:14:09  9.4  0.09  40
469505         17:04:01.0 -19:19:22 15.2        40
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:29:45 UT

Marc W. Buie, Southwest Research Institute

RECON