RECON: TNO occultation with 555916

Event between (555916) 14GB54 and star GA0880:05041352 with event index number of 2485200

Geocentric closest approach at 2027/06/10 08:39:30 UTC

J2000 position of star is 16:49:27.3 -01:47:11
Equinox of date position of star is 16:50:34.6 -01:49:21
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 96 degrees from the moon. Moon is 38% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 28.2 AU from the Sun and 27.2 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 4.2 arcsec/hr.
The 1-sigma error in the time of the event is 201 seconds.
The 1-sigma cross-track error in the shadow position is 1698 km.
The sky-plane scale is 19733.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=162.9 km assuming a 5% albedo -- 7.1 sec chord
Diameter=66.5 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 555916, (2027/06/10 08:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.7 -26:29:25  0.9 25.11  95
1Del Oph       16:15:47.2 -03:45:46  2.7  8.97  88
16 Oph         16:46:53.5 +00:58:19  6.0  2.98  95
PPM 179917     16:47:49.9 -01:24:31  8.5  0.87  96
PPM 179930     16:50:05.9 -01:54:57  9.5  0.21  96
555916         16:50:52.8 -01:49:56 14.6        97
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 4.5 sigma about the mid-time.
The median site spacing is 20.4 km RECON observability=1.0 and success probability=20.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 08:39:14 -16.1 AT Down 36.0 200.7 Up 08:24:14 - 08:54:14 1435
Kelowna 08:39:13 -16.5 AT Down 36.4 200.6 Up 08:24:13 - 08:54:13 1408
Peachland 08:39:14 -16.7 AT Down 36.6 200.3 Up 08:24:14 - 08:54:14 1399
Summerland 08:39:14 -16.8 AT Down 36.7 200.4 Up 08:24:14 - 08:54:14 1390
Penticton 08:39:13 -16.9 AT Down 36.8 200.6 Up 08:24:13 - 08:54:13 1386
Oliver 08:39:13 -17.2 AT Down 37.1 200.7 Up 08:24:13 - 08:54:13 1363
Anarchist Mountain Observatory 08:39:12 -17.4 AT Down 37.2 201.0 Up 08:24:12 - 08:54:12 1354
Tonasket 08:39:11 -17.7 AT Down 37.5 200.9 Up 08:24:11 - 08:54:11 1333
Okanogan 08:39:12 -18.0 Dark Down 37.9 200.9 Up 08:24:12 - 08:54:12 1309
Brewster 08:39:12 -18.3 Dark Down 38.2 200.7 Up 08:24:12 - 08:54:12 1288
Victoria 08:39:23 -18.2 Dark Down 38.5 196.1 Up 08:24:23 - 08:54:23 1280
Manson/Chelan 08:39:13 -18.6 Dark Down 38.5 200.3 Up 08:24:13 - 08:54:13 1271
Wenatchee 08:39:12 -19.1 Dark Down 38.9 200.2 Up 08:24:12 - 08:54:12 1236
Ellensburg 08:39:13 -19.5 Dark Down 39.4 200.0 Up 08:24:13 - 08:54:13 1206
Yakima 08:39:12 -19.9 Dark Down 39.8 200.1 Up 08:24:12 - 08:54:12 1177
Pasco 08:39:07 -20.1 Dark Down 39.7 202.0 Up 08:24:07 - 08:54:07 1168
Toppenish/White Swan 08:39:12 -20.1 Dark Down 39.9 200.4 Up 08:24:12 - 08:54:12 1164
PNWRO 08:39:06 -20.3 Dark Down 39.9 202.4 Up 08:24:06 - 08:54:06 1154
Goldendale 08:39:12 -20.7 Dark Down 40.6 200.0 Up 08:24:12 - 08:54:12 1120
The Dalles 08:39:13 -20.9 Dark Down 40.9 199.6 Up 08:24:13 - 08:54:13 1100
Maupin 08:39:12 -21.3 Dark Down 41.2 199.9 Up 08:24:12 - 08:54:12 1071
Redmond 08:39:11 -22.2 Dark Down 42.1 200.0 Up 08:24:11 - 08:54:11 1005
Sisters 08:39:12 -22.3 Dark Down 42.2 199.5 Up 08:24:12 - 08:54:12 1002
Bend 08:39:11 -22.5 Dark Down 42.3 199.9 Up 08:24:11 - 08:54:11 988
Oregon Observatory 08:39:11 -22.7 Dark Down 42.5 199.8 Up 08:24:11 - 08:54:11 974
La Pine/Gilchrist 08:39:11 -22.9 Dark Down 42.7 199.8 Up 08:24:11 - 08:54:11 958
North Lake 08:39:09 -23.2 Dark Down 43.0 200.7 Up 08:24:09 - 08:54:09 932
Paisley 08:39:07 -23.7 Dark Down 43.4 201.4 Up 08:24:07 - 08:54:07 895
Dunrhomin 08:38:13 -22.7 Dark Down 39.6 221.2 Up 08:23:13 - 08:53:13 871
Chiloquin 08:39:11 -24.0 Dark Down 43.9 199.7 Up 08:24:11 - 08:54:11 870
Lakeview 08:39:05 -24.2 Dark Down 43.8 201.8 Up 08:24:05 - 08:54:05 859
Klamath Falls 08:39:10 -24.3 Dark Down 44.2 199.9 Up 08:24:10 - 08:54:10 845
Cedarville 08:39:04 -24.8 Dark Down 44.4 202.3 Up 08:24:04 - 08:54:04 810
Fall River/Burney 08:39:08 -25.5 Dark Down 45.2 200.8 Up 08:24:08 - 08:54:08 759
Susanville 08:39:04 -26.0 Dark Down 45.6 202.0 Up 08:24:04 - 08:54:04 718
Gimple 08:39:04 -26.3 Dark Down 45.9 201.8 Up 08:24:04 - 08:54:04 693
Greenville 08:39:05 -26.3 Dark Down 45.9 201.7 Up 08:24:05 - 08:54:05 693
Quincy 08:39:04 -26.5 Dark Down 46.1 201.8 Up 08:24:04 - 08:54:04 677
Portola 08:39:03 -26.6 Dark Down 46.1 202.5 Up 08:24:03 - 08:54:03 672
Reno 08:39:00 -26.7 Dark Down 46.1 203.5 Up 08:24:00 - 08:54:00 659
Carson City 08:38:59 -27.1 Dark Down 46.4 203.7 Up 08:23:59 - 08:53:59 631
Yerington 08:38:57 -27.2 Dark Down 46.4 204.6 Up 08:23:57 - 08:53:57 622
Gardnerville 08:38:59 -27.3 Dark Down 46.7 203.8 Up 08:23:59 - 08:53:59 611
Hawthorne 08:38:54 -27.6 Dark Down 46.7 205.5 Up 08:23:54 - 08:53:54 591
Tonopah 08:38:49 -27.8 Dark Down 46.6 207.7 Up 08:23:49 - 08:53:49 570
Lee Vining 08:38:56 -28.2 Dark Down 47.4 205.1 Up 08:23:56 - 08:53:56 540
Bishop 08:38:52 -28.7 Dark Down 47.6 206.4 Up 08:23:52 - 08:53:52 499
Beatty 08:38:46 -28.8 Dark Down 47.5 208.8 Up 08:23:46 - 08:53:46 480
Indian Springs 08:38:41 -28.9 Dark Down 47.3 210.5 Up 08:23:41 - 08:53:41 466
Henderson 08:38:38 -29.3 Dark Down 47.5 211.7 Up 08:23:38 - 08:53:38 429
Patrick 08:38:33 -29.7 Dark Down 47.5 213.5 Up 08:23:33 - 08:53:33 390
Kingman/Dolan Springs 08:38:33 -29.9 Dark Down 47.8 213.4 Up 08:23:33 - 08:53:33 369
Laughlin/Bullhead City 08:38:35 -30.1 Dark Down 48.1 212.7 Up 08:23:35 - 08:53:35 360
Mohave Valley 08:38:35 -30.3 Dark Down 48.3 212.9 Up 08:23:35 - 08:53:35 337
Lake Havasu City 08:38:33 -30.7 Dark Down 48.5 213.5 Up 08:23:33 - 08:53:33 306
CPSLO 08:38:58 -31.0 Dark Down 50.3 204.2 Up 08:23:58 - 08:53:58 299
Parker 08:38:32 -31.0 Dark Down 48.8 213.7 Up 08:23:32 - 08:53:32 277
George/Scottsdale 08:38:23 -30.8 Dark Down 48.0 217.2 Up 08:23:23 - 08:53:23 269
Blythe 08:38:33 -31.6 Dark Down 49.4 213.7 Up 08:23:33 - 08:53:33 228
Wildwood 08:38:48 -31.9 Dark Down 50.6 207.8 Up 08:23:48 - 08:53:48 221
Idyllwild 08:38:41 -31.9 Dark Down 50.2 210.7 Up 08:23:41 - 08:53:41 213
Calipatria 08:38:36 -32.2 Dark Down 50.2 212.7 Up 08:23:36 - 08:53:36 174
Yuma 08:38:32 -32.5 Dark Down 50.2 214.2 Up 08:23:32 - 08:53:32 147

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 555916, (2027/06/10 08:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.11  95
1Del Oph       16:14:20.7 -03:41:43  2.7  8.97  88
16 Oph         16:45:29.7 +01:01:13  6.0  2.98  95
PPM 179917     16:46:24.7 -01:21:39  8.5  0.87  96
PPM 179930     16:48:40.3 -01:52:10  9.5  0.21  96
555916         16:49:27.3 -01:47:11 14.6        96
Positions are for J2000

Event circumstances last updated at 2021/08/17 01:26:42 UT

Marc W. Buie, Southwest Research Institute

RECON