RECON: TNO occultation with 523718

Event between (523718) 14KZ101 and star GA0820:11982146 with event index number of 2331029

Geocentric closest approach at 2028/06/10 08:18:31 UTC

J2000 position of star is 18:44:12.8 -06:14:22
Equinox of date position of star is 18:45:31.6 -06:12:47
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 22 degrees from the moon. Moon is 90% 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 21.2 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 554 seconds.
The 1-sigma cross-track error in the shadow position is 1693 km.
The sky-plane scale is 25937.3 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 -- 5.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523718, (2028/06/10 08:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.4 -26:29:33  0.9 37.91  47
60Bet Oph      17:44:52.7 +04:33:26  2.8 18.62  41
PPM 202054     18:44:08.2 -07:02:38  6.5  0.93  22
PPM 202094     18:46:12.6 -06:30:18  6.8  0.32  22
PPM 202101     18:46:21.3 -06:18:34  9.1  0.18  22
523718         18:45:44.3 -06:12:31 16.2        22
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 1.6 sigma about the mid-time.
The median site spacing is 23.6 km RECON observability=1.0 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:18:47 -13.1 AT Up 31.6 176.4 Up 08:03:47 - 08:33:47 5889
Kamloops 08:19:34 -16.2 AT Up 31.2 159.8 Up 08:04:34 - 08:34:34 5763
Kelowna 08:19:32 -16.9 AT Up 32.1 160.6 Up 08:04:32 - 08:34:32 5716
Peachland 08:19:33 -17.0 AT Up 32.2 160.3 Up 08:04:33 - 08:34:33 5708
Summerland 08:19:34 -17.2 AT Up 32.3 160.3 Up 08:04:34 - 08:34:34 5699
Penticton 08:19:33 -17.2 AT Up 32.4 160.5 Up 08:04:33 - 08:34:33 5695
Oliver 08:19:33 -17.6 AT Up 32.7 160.4 Up 08:04:33 - 08:34:33 5672
Anarchist Mountain Observatory 08:19:33 -17.8 AT Up 32.9 160.6 Up 08:04:33 - 08:34:33 5663
Okanogan 08:19:34 -18.4 Dark Up 33.5 160.2 Up 08:04:34 - 08:34:34 5620
Victoria 08:19:40 -18.4 Dark Up 32.4 155.8 Up 08:04:40 - 08:34:40 5616
Brewster 08:19:35 -18.7 Dark Up 33.7 159.9 Up 08:04:35 - 08:34:35 5601
Manson/Chelan 08:19:36 -18.9 Dark Up 33.8 159.4 Up 08:04:36 - 08:34:36 5586
Wenatchee 08:19:37 -19.4 Dark Up 34.2 159.1 Up 08:04:37 - 08:34:37 5554
Ellensburg 08:19:39 -19.8 Dark Up 34.6 158.7 Up 08:04:39 - 08:34:39 5525
Yakima 08:19:39 -20.2 Dark Up 34.9 158.6 Up 08:04:39 - 08:34:39 5497
Toppenish/White Swan 08:19:39 -20.4 Dark Up 35.2 158.8 Up 08:04:39 - 08:34:39 5483
PNWRO 08:19:34 -20.7 Dark Up 35.9 160.4 Up 08:04:34 - 08:34:34 5464
The Dalles 08:19:40 -21.3 Dark Up 35.7 157.6 Up 08:04:40 - 08:34:40 5426
Maupin 08:19:40 -21.7 Dark Up 36.1 157.6 Up 08:04:40 - 08:34:40 5398
Sisters 08:19:40 -22.6 Dark Up 36.8 156.8 Up 08:04:40 - 08:34:40 5335
Bend 08:19:40 -22.8 Dark Up 37.1 157.0 Up 08:04:40 - 08:34:40 5318
Oregon Observatory 08:19:40 -23.0 Dark Up 37.2 156.8 Up 08:04:40 - 08:34:40 5306
Chiloquin 08:19:40 -24.3 Dark Up 38.3 155.9 Up 08:04:40 - 08:34:40 5209
Klamath Falls 08:19:40 -24.6 Dark Up 38.6 155.9 Up 08:04:40 - 08:34:40 5184
Cedarville 08:19:40 -25.3 Dark Up 39.7 157.7 Up 08:04:40 - 08:34:40 5137
Fall River/Burney 08:19:40 -25.8 Dark Up 39.8 156.0 Up 08:04:40 - 08:34:40 5097
Dunrhomin 08:18:46 -24.1 Dark Up 43.5 176.8 Up 08:03:46 - 08:33:46 5089
Nikitin 08:18:46 -24.3 Dark Up 43.6 176.8 Up 08:03:46 - 08:33:46 5074
CU-SBO 08:18:47 -24.4 Dark Up 43.7 176.7 Up 08:03:47 - 08:33:47 5069
Greenville 08:19:40 -26.7 Dark Up 40.8 156.2 Up 08:04:40 - 08:34:40 5029
Gimple 08:19:40 -26.7 Dark Up 40.8 156.3 Up 08:04:40 - 08:34:40 5029
Quincy 08:19:40 -26.9 Dark Up 41.0 156.2 Up 08:04:40 - 08:34:40 5013
Portola 08:19:40 -27.0 Dark Up 41.2 156.7 Up 08:04:40 - 08:34:40 5005
Reno 08:19:40 -27.2 Dark Up 41.7 157.5 Up 08:04:40 - 08:34:40 4986
Carson City 08:19:40 -27.6 Dark Up 42.0 157.4 Up 08:04:40 - 08:34:40 4958
Yerington 08:19:40 -27.7 Dark Up 42.4 158.1 Up 08:04:40 - 08:34:40 4945
Gardnerville 08:19:40 -27.8 Dark Up 42.3 157.3 Up 08:04:40 - 08:34:40 4939
Hawthorne 08:19:40 -28.1 Dark Up 43.0 158.6 Up 08:04:40 - 08:34:40 4910
Lee Vining 08:19:40 -28.7 Dark Up 43.3 157.8 Up 08:04:40 - 08:34:40 4863
Bishop 08:19:40 -29.3 Dark Up 44.1 158.5 Up 08:04:40 - 08:34:40 4817
Beatty 08:19:34 -29.5 Dark Up 45.0 160.5 Up 08:04:34 - 08:34:34 4787
Patrick 08:19:23 -30.6 Dark Up 47.1 164.0 Up 08:04:23 - 08:34:23 4675
Laughlin/Bullhead City 08:19:26 -30.9 Dark Up 47.2 163.0 Up 08:04:26 - 08:34:26 4652
Lake Havasu City 08:19:26 -31.6 Dark Up 47.9 163.1 Up 08:04:26 - 08:34:26 4596
Wildwood 08:19:40 -32.5 Dark Up 47.1 157.0 Up 08:04:40 - 08:34:40 4545
George/Scottsdale 08:19:15 -31.9 Dark Up 49.2 166.4 Up 08:04:15 - 08:34:15 4539
Idyllwild 08:19:35 -32.7 Dark Up 48.0 159.5 Up 08:04:35 - 08:34:35 4523
Calipatria 08:19:31 -33.1 Dark Up 48.9 160.9 Up 08:04:31 - 08:34:31 4474
Yuma 08:19:27 -33.4 Dark Up 49.5 162.1 Up 08:04:27 - 08:34:27 4440

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, (2028/06/10 08:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 37.91  47
60Bet Oph      17:43:28.3 +04:34:06  2.8 18.62  41
PPM 202054     18:42:36.1 -07:04:26  6.5  0.93  22
PPM 202094     18:44:40.9 -06:32:10  6.8  0.32  22
PPM 202101     18:44:49.7 -06:20:26  9.1  0.18  22
523718         18:44:12.8 -06:14:22 16.2        22
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:29:46 UT

Marc W. Buie, Southwest Research Institute

RECON