RECON: TNO occultation with 578832

Event between (578832) 14GP53 and star GA0720:10714301 with event index number of 2551426

Geocentric closest approach at 2028/06/27 06:47:35 UTC

J2000 position of star is 17:32:24.1 -16:46:23
Equinox of date position of star is 17:33:40.9 -16:47:15
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 23.6 AU from the Sun and 22.6 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 297 seconds.
The 1-sigma cross-track error in the shadow position is 2174 km.
The sky-plane scale is 16364.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.9
Diameter=98.2 km assuming a 5% albedo -- 4.4 sec chord
Diameter=40.1 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 578832, (2028/06/27 06:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.5 -26:29:33  0.9 17.51  93
35Eta Oph      17:12:00.8 -15:45:29  2.6  5.39 102
PPM 233351     17:39:14.4 -15:35:09  6.2  1.73 108
PPM 233184     17:32:52.1 -17:09:41  8.5  0.47 107
PPM 233216     17:34:11.3 -16:39:40  9.7  0.13 107
578832         17:34:03.1 -16:47:30 15.6       108
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 3.0 sigma about the mid-time.
The median site spacing is 16.3 km RECON observability=1.0 and success probability=0.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:46:57 -14.5 AT Down 20.7 188.8 Low 06:31:57 - 07:01:57 8518
Kamloops 06:47:41 -14.1 AT Down 22.4 174.2 Low 06:32:41 - 07:02:41 8514
Kelowna 06:47:39 -15.1 AT Down 23.2 175.1 Low 06:32:39 - 07:02:39 8478
Peachland 06:47:40 -15.1 AT Down 23.3 174.7 Low 06:32:40 - 07:02:40 8473
Summerland 06:47:40 -15.3 AT Down 23.5 174.8 Low 06:32:40 - 07:02:40 8467
Penticton 06:47:39 -15.3 AT Down 23.6 174.9 Low 06:32:39 - 07:02:39 8463
Oliver 06:47:39 -15.7 AT Down 23.9 174.9 Low 06:32:39 - 07:02:39 8448
Anarchist Mountain Observatory 06:47:39 -15.9 AT Down 24.1 175.1 Low 06:32:39 - 07:02:39 8440
Tonasket 06:47:39 -16.2 AT Down 24.4 175.0 Low 06:32:39 - 07:02:39 8426
Victoria 06:47:52 -15.5 AT Down 24.3 170.9 Low 06:32:52 - 07:02:52 8421
Okanogan 06:47:40 -16.5 AT Down 24.7 174.9 Low 06:32:40 - 07:02:40 8410
Brewster 06:47:40 -16.7 AT Down 25.0 174.7 Low 06:32:40 - 07:02:40 8398
Manson/Chelan 06:47:42 -16.8 AT Down 25.2 174.3 Low 06:32:42 - 07:02:42 8389
Wenatchee 06:47:42 -17.2 AT Down 25.6 174.1 Low 06:32:42 - 07:02:42 8367
Ellensburg 06:47:43 -17.6 AT Down 26.0 173.8 Low 06:32:43 - 07:02:43 8347
Yakima 06:47:44 -17.9 AT Down 26.4 173.8 Low 06:32:44 - 07:02:44 8327
Toppenish/White Swan 06:47:44 -18.2 Dark Down 26.6 173.9 Low 06:32:44 - 07:02:44 8316
PNWRO 06:47:38 -18.8 Dark Down 27.1 175.5 Low 06:32:38 - 07:02:38 8295
Goldendale 06:47:45 -18.6 Dark Down 27.2 173.5 Low 06:32:45 - 07:02:45 8289
The Dalles 06:47:46 -18.7 Dark Down 27.4 173.1 Low 06:32:46 - 07:02:46 8277
Maupin 06:47:46 -19.2 Dark Down 27.8 173.1 Low 06:32:46 - 07:02:46 8256
Sisters 06:47:48 -19.9 Dark Down 28.6 172.6 Low 06:32:48 - 07:02:48 8211
Bend 06:47:47 -20.2 Dark Down 28.9 172.8 Low 06:32:47 - 07:02:47 8198
Oregon Observatory 06:47:48 -20.3 Dark Down 29.0 172.7 Low 06:32:48 - 07:02:48 8189
North Lake 06:47:47 -21.0 Dark Down 29.7 173.2 Low 06:32:47 - 07:02:47 8153
Chiloquin 06:47:50 -21.4 Dark Down 30.3 172.1 Up 06:32:50 - 07:02:50 8117
Klamath Falls 06:47:50 -21.8 Dark Down 30.6 172.2 Up 06:32:50 - 07:02:50 8097
Lakeview 06:47:45 -22.2 Dark Down 30.8 173.7 Up 06:32:45 - 07:02:45 8093
Cedarville 06:47:45 -22.8 Dark Down 31.5 173.9 Up 06:32:45 - 07:02:45 8055
Fall River/Burney 06:47:50 -23.0 Dark Down 31.9 172.5 Up 06:32:50 - 07:02:50 8028
Susanville 06:47:47 -23.8 Dark Down 32.5 173.3 Up 06:32:47 - 07:02:47 7990
Greenville 06:47:48 -23.9 Dark Down 32.8 172.9 Up 06:32:48 - 07:02:48 7974
Gimple 06:47:48 -24.0 Dark Down 32.8 173.0 Up 06:32:48 - 07:02:48 7974
Quincy 06:47:49 -24.1 Dark Down 33.0 172.9 Up 06:32:49 - 07:02:49 7962
Portola 06:47:47 -24.4 Dark Down 33.2 173.5 Up 06:32:47 - 07:02:47 7954
Reno 06:47:44 -24.8 Dark Down 33.5 174.2 Up 06:32:44 - 07:02:44 7936
Carson City 06:47:44 -25.1 Dark Down 33.8 174.2 Up 06:32:44 - 07:02:44 7914
Dunrhomin 06:46:50 -26.3 Dark Down 32.3 190.6 Up 06:31:50 - 07:01:50 7908
Yerington 06:47:42 -25.5 Dark Down 34.1 174.9 Up 06:32:42 - 07:02:42 7901
Gardnerville 06:47:44 -25.4 Dark Down 34.1 174.2 Up 06:32:44 - 07:02:44 7899
CU-SBO 06:46:50 -26.6 Dark Down 32.6 190.5 Up 06:31:50 - 07:01:50 7893
Hawthorne 06:47:40 -26.0 Dark Down 34.6 175.5 Up 06:32:40 - 07:02:40 7870
Tonopah 06:47:35 -26.8 Dark Down 35.1 177.1 Up 06:32:35 - 07:02:35 7837
Lee Vining 06:47:43 -26.5 Dark Down 35.1 174.9 Up 06:32:43 - 07:02:43 7836
Bishop 06:47:40 -27.2 Dark Down 35.8 175.7 Up 06:32:40 - 07:02:40 7796
Beatty 06:47:34 -28.0 Dark Down 36.3 177.6 Up 06:32:34 - 07:02:34 7761
Indian Springs 06:47:29 -28.6 Dark Down 36.6 178.8 Up 06:32:29 - 07:02:29 7735
Henderson 06:47:27 -29.2 Dark Down 37.2 179.6 Up 06:32:27 - 07:02:27 7697
Patrick 06:47:23 -30.1 Dark Down 37.8 181.0 Up 06:32:23 - 07:02:23 7650
Laughlin/Bullhead City 06:47:26 -30.2 Dark Down 38.1 180.1 Up 06:32:26 - 07:02:26 7636
Kingman/Dolan Springs 06:47:23 -30.2 Dark Down 38.0 180.7 Up 06:32:23 - 07:02:23 7636
Mohave Valley 06:47:26 -30.4 Dark Down 38.3 180.1 Up 06:32:26 - 07:02:26 7617
Lake Havasu City 06:47:25 -30.9 Dark Down 38.7 180.4 Up 06:32:25 - 07:02:25 7588
Wildwood 06:47:42 -30.3 Dark Down 39.0 175.2 Up 06:32:42 - 07:02:42 7576
Parker 06:47:25 -31.2 Dark Down 39.1 180.5 Up 06:32:25 - 07:02:25 7564
Idyllwild 06:47:34 -31.1 Dark Down 39.5 177.5 Up 06:32:34 - 07:02:34 7546
George/Scottsdale 06:47:15 -32.1 Dark Down 39.4 183.4 Up 06:32:15 - 07:02:15 7522
Calipatria 06:47:29 -31.9 Dark Down 40.1 178.9 Up 06:32:29 - 07:02:29 7497
Yuma 06:47:26 -32.5 Dark Down 40.5 180.0 Up 06:32:26 - 07:02:26 7462

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 578832, (2028/06/27 06:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.51  93
35Eta Oph      17:10:22.7 -15:43:29  2.6  5.39 102
PPM 233351     17:37:36.2 -15:34:15  6.2  1.73 108
PPM 233184     17:31:12.8 -17:08:31  8.5  0.47 107
PPM 233216     17:32:32.4 -16:38:34  9.7  0.13 107
578832         17:32:24.1 -16:46:23 15.6       107
Positions are for J2000

Event circumstances last updated at 2022/02/14 02:49:17 UT

Marc W. Buie, Southwest Research Institute

RECON