RECON: TNO occultation with 523718

Event between (523718) 14KZ101 and star GA0820:10796446 with event index number of 2331160

Geocentric closest approach at 2028/07/27 10:06:46 UTC

J2000 position of star is 18:40:18.7 -06:21:50
Equinox of date position of star is 18:41:37.6 -06:20:23
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon. Moon is 35% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 36.7 AU from the Sun and 35.8 AU from the Earth.
Apparent velocity is 21.1 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 544 seconds.
The 1-sigma cross-track error in the shadow position is 1963 km.
The sky-plane scale is 25980.6 km/arcsec.

The object has an absolute magnitude Hv=6.5
Diameter=316.2 km assuming a 5% albedo -- 14.3 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523718, (2028/07/27 10:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.9 -26:29:34  0.9 37.06  52
60Bet Oph      17:44:53.1 +04:33:26  2.8 17.91  73
PPM 202054     18:44:08.6 -07:02:38  6.5  0.91  85
PPM 201919     18:38:14.9 -06:23:46  8.4  0.90  84
PPM 201999     18:41:00.0 -06:30:11  9.5  0.27  84
523718         18:41:50.7 -06:20:08 15.6        85
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 1.7 sigma about the mid-time.
The median site spacing is 38.7 km RECON observability=0.4 and success probability=1.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:03:03 -15.8 AT Down 15.5 238.7 Really Low 09:48:03 - 10:18:03 -3641
Kelowna 10:03:00 -16.3 AT Down 15.4 239.6 Really Low 09:48:00 - 10:18:00 -3724
Peachland 10:03:00 -16.5 AT Down 15.6 239.4 Really Low 09:48:00 - 10:18:00 -3728
Summerland 10:02:59 -16.6 AT Down 15.7 239.5 Really Low 09:47:59 - 10:17:59 -3742
Sleaford 10:02:48 -9.6 NT Down 6.8 250.5 Really Low 09:47:48 - 10:17:48 -3747
Penticton 10:02:59 -16.6 AT Down 15.6 239.6 Really Low 09:47:59 - 10:17:59 -3750
Victoria 10:03:04 -18.6 Dark Down 18.3 236.6 Really Low 09:48:04 - 10:18:04 -3764
Oliver 10:02:58 -16.9 AT Down 15.8 239.7 Really Low 09:47:58 - 10:17:58 -3779
Anarchist Mountain Observatory 10:02:57 -17.0 AT Down 15.8 239.9 Really Low 09:47:57 - 10:17:57 -3797
Okanogan 10:02:56 -17.6 AT Down 16.3 239.9 Really Low 09:47:56 - 10:17:56 -3848
Brewster 10:02:57 -17.9 AT Down 16.5 239.8 Really Low 09:47:57 - 10:17:57 -3867
Manson/Chelan 10:02:57 -18.2 Dark Down 16.8 239.5 Really Low 09:47:57 - 10:17:57 -3878
Wenatchee 10:02:56 -18.7 Dark Down 17.2 239.5 Really Low 09:47:56 - 10:17:56 -3916
Ellensburg 10:02:55 -19.1 Dark Down 17.5 239.4 Really Low 09:47:55 - 10:17:55 -3947
Yakima 10:02:54 -19.5 Dark Down 17.7 239.5 Really Low 09:47:54 - 10:17:54 -3982
Toppenish/White Swan 10:02:54 -19.6 Dark Down 17.7 239.7 Really Low 09:47:54 - 10:17:54 -4004
The Dalles 10:02:54 -20.6 Dark Down 18.6 239.3 Really Low 09:47:54 - 10:17:54 -4057
PNWRO 10:02:50 -19.4 Dark Down 17.0 241.1 Really Low 09:47:50 - 10:17:50 -4065
Maupin 10:02:54 -20.9 Dark Down 18.8 239.5 Really Low 09:47:54 - 10:17:54 -4096
Sisters 10:02:52 -21.9 Dark Down 19.5 239.3 Really Low 09:47:52 - 10:17:52 -4163
Bend 10:02:51 -22.0 Dark Down 19.5 239.6 Really Low 09:47:51 - 10:17:51 -4190
Oregon Observatory 10:02:51 -22.2 Dark Down 19.6 239.6 Really Low 09:47:51 - 10:17:51 -4203
Chiloquin 10:02:50 -23.5 Dark Down 20.6 239.6 Low 09:47:50 - 10:17:50 -4312
Klamath Falls 10:02:48 -23.8 Dark Down 20.7 239.8 Low 09:47:48 - 10:17:48 -4345
Cedarville 10:02:45 -23.8 Dark Down 20.0 241.3 Low 09:47:45 - 10:17:45 -4442
Fall River/Burney 10:02:47 -24.7 Dark Down 21.0 240.5 Low 09:47:47 - 10:17:47 -4461
Greenville 10:02:43 -25.3 Dark Down 21.2 241.2 Low 09:47:43 - 10:17:43 -4554
Gimple 10:02:43 -25.3 Dark Down 21.1 241.2 Low 09:47:43 - 10:17:43 -4556
Quincy 10:02:43 -25.5 Dark Down 21.3 241.2 Low 09:47:43 - 10:17:43 -4573
Portola 10:02:42 -25.4 Dark Down 21.0 241.6 Low 09:47:42 - 10:17:42 -4595
Reno 10:02:41 -25.4 Dark Down 20.7 242.2 Low 09:47:41 - 10:17:41 -4634
Carson City 10:02:40 -25.7 Dark Down 20.9 242.4 Low 09:47:40 - 10:17:40 -4668
Gardnerville 10:02:39 -25.9 Dark Down 21.0 242.5 Low 09:47:39 - 10:17:39 -4692
Yerington 10:02:38 -25.6 Dark Down 20.5 242.9 Low 09:47:38 - 10:17:38 -4700
Hawthorne 10:02:35 -25.8 Dark Down 20.4 243.5 Low 09:47:35 - 10:17:35 -4755
Lee Vining 10:02:36 -26.5 Dark Down 21.0 243.3 Low 09:47:36 - 10:17:36 -4799
Dunrhomin 10:02:18 -18.1 Dark Down 10.1 252.6 Really Low 09:47:18 - 10:17:18 -4843
Nikitin 10:02:18 -18.2 Dark Down 10.2 252.6 Really Low 09:47:18 - 10:17:18 -4860
CU-SBO 10:02:18 -18.3 Dark Down 10.3 252.6 Really Low 09:47:18 - 10:17:18 -4865
Bishop 10:02:34 -26.7 Dark Down 20.7 244.0 Low 09:47:34 - 10:17:34 -4872
Beatty 10:02:30 -26.3 Dark Down 19.8 245.4 Really Low 09:47:30 - 10:17:30 -4951
Patrick 10:02:23 -26.2 Dark Down 18.2 247.8 Really Low 09:47:23 - 10:17:23 -5157
Laughlin/Bullhead City 10:02:24 -26.7 Dark Down 18.8 247.4 Really Low 09:47:24 - 10:17:24 -5167
Wildwood 10:02:30 -29.5 Dark Down 22.3 245.0 Low 09:47:30 - 10:17:30 -5186
Lake Havasu City 10:02:22 -27.1 Dark Down 18.9 247.8 Really Low 09:47:22 - 10:17:22 -5239
Idyllwild 10:02:26 -28.9 Dark Down 21.0 246.5 Low 09:47:26 - 10:17:26 -5263
Calipatria 10:02:22 -28.8 Dark Down 20.4 247.5 Low 09:47:22 - 10:17:22 -5350
George/Scottsdale 10:02:16 -26.5 Dark Down 17.3 249.7 Really Low 09:47:16 - 10:17:16 -5368
Yuma 10:02:20 -28.7 Dark Down 19.8 248.2 Really Low 09:47:20 - 10:17:20 -5413

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 523718, (2028/07/27 10:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 37.06  52
60Bet Oph      17:43:28.3 +04:34:06  2.8 17.91  73
PPM 202054     18:42:36.1 -07:04:26  6.5  0.91  85
PPM 201919     18:36:42.8 -06:25:19  8.4  0.90  84
PPM 201999     18:39:27.8 -06:31:51  9.5  0.27  84
523718         18:40:18.7 -06:21:50 15.6        85
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:33:29 UT

Marc W. Buie, Southwest Research Institute

RECON